Popular Circuits Page 247
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The 555 timer will put out positive pulses. The pulse width is inversely proportional to the difference in voltage between the voltage at "ANALOG IN" and the voltage of the 4. 7uF capacitor(let`s say 2. 5 volts). To calibrate this circuit, hook it up to a....
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Circuit works The danger zone warning circuit from the regulator circuit, the pyroelectric infrared detection trigger circuit, electronic switching circuit, voice circuits, aud..
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AD9835 is a DDS (direct digital synthesis) chip from Analog Devices. It contains a phase accumulator, sinewave table, and 10-bit D/A converter. In can be used for phase and frequency modulation by selecting the phase and frequency of the signal either under....
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220V (5Hz) alternating voltagepass Z1 circuit filter filtering, then it will send to the connect point of AC over voltage, under voltage protect relay K2. When normal working, K2 connect point should up-close, connect AC 220V voltage to AC current-limiting....
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The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound card to use a common....
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This is a design circuit for high frequency waveform generator is very useful in electronic experiment and design. This circuit is generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. Th ....
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Figure (a) shows a block diagram of the internal structure of the M62213FP. M62213FP is a high speed switching power supply controller. It consists of an oscillator, PWM compar..
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This Line Following Robot sensor or surface scanner for robots is a very simple, stamp-sized, short range (5-10mm) Infrared proximity detector wired around a standard reflective opto-sensor CNY70(IC1). In some disciplines, a line following robot or an....
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The main system is the user interface and control system. The phone line was chosen as the method of interfacing because it has distinct advantages over other systems in communicating information from a distance. The next image serves as a block diagram for....
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Build a 10W LED flashlight that features swappable UV/IR/visible heads. We decided to document the build since this flashlight would fit nicely in a photographer`s kit for light painting, IR illumination, UV reflected photography, or UV fluorescence....
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A sidetone oscillator is a special audio astable multivibrator. Keying is accomplished oscillator that is turned on and off with the by applying a positive dc potential, developed transmitter. The oscillator is rf-driven and bat- from the rf signal, to the....
-
Car audio amplifier schematic diagram. Given the voltage of the car is +12 V, we have the opportunity to take power over a threshold. The solution is to use two amplifiers in bridge connection, so the output quadrupled, at least theoretically, and at best,....
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This circuit is intended to signal, through a flashing LED, the exceeding of a fixed threshold in room noise, chosen from three fixed levels, namely 50, 70 & 85 dB. Two Op-amps provide the necessary circuit gain for sounds picked-up by a miniature electret....
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Most of the CDROMS available have an Audio-Out Output to either plug in the headphones or connect it to an amplifier.
This circuit enables one to use the CDROM as a stand alone Audio CD player without the computer.
This circuit is nothing but a power....
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Amp 2SC2922 and 2SA1216 (or 2SC3264 and 2SA1295) performance is very excellent more, it is good linearity, strong overload. Use it as a high-fidelity power amplifier stage amplifier, the performance is very excellent photos...
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Circle MIC to lift the damper after it is converted into a voltage signal sounds, the op amp A buffer enemy, one road goes to the motor drive circuit for controlling the motor ..
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Using a transistor won`t give accurate results, moreover the setting part would become very tedious. The circuit is technically correct, if you can adjust the tripping point correctly, then it might just work. Vinod: I made the charger (hysteresis) but there....
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What is the purpose of this circuit? Basically it has two roles: to pass the desired low frequency signals and stop the unwanted high frequency signals. Open the netlist file lpfilter1.cir” with your SPICE simulator. Most simulators display the netlist in a....
-
This circuit of multimedia speakers for PCs has single-chip-based design, low-voltage power supply, compatibility with USB power, easy heat-sinking, low c....
-
The circuit is a divider by 64 used in many RF applications like as satellite receiver, digital tuners, frequency counters, PLL, etc. The heart of circuit is an IC named SAB6456, but you can use SDA2101 or other equivalent chips. Each output is NOT of the....
-
This add-on circuit enables remote switching on/off of battery-operated toy cars with the help of a TV/video remote control handset operating at 30 40 kHz. When the circuit is energised from a 6V battery, the decade counter CD4017 (IC2), which is configured....
-
220V AC voltage through the transformer T transformer is 19V, after full-wave bridge rectifier, filter capacitor c], terminal regulator blocks 7812 after regulators into DC vol..
-
AN6591FJM is a single chip IC optimum for PHS, and a quadrature Modulator reception IF and PLL are inte- grated in it. As this IC is housed in a QFN package (quad flat non- leaded PKG), realization of compact equipment through this super-small package is....
-
Firstly, it demonstrates how the combination of a blue and a white LED can be used to give a realistic imitation of a camera flashlight. Secondly, the goo....
-
The Linkwitz transform circuit (or EAS principle) will allow any driver to extend to 20 Hz or even lower. A good quick test is to stick the speaker in a box, and drive it to 50 or 100W or so at 20 Hz - you should see a lot of cone movement, a few things will....
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Asynchronous motor reactive power compensation on the spot, is the capacitor directly connected with the asynchronous motor stator windings connected to increase the power of a..
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Due to the lack of speed in the entire series TTL monostable multivibrator, and because of the requirements of ECL voltage swing wide range of small and power, which drives us to use F series circuit having a fast transition..
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Those drivers could run fourteen leds but just went with twelve. This means that i could add 12 leds to mine with no extra drivers. Not that i will do that now but if my tank gets bigger (honey i swear the tank has been growing from day one you just havent....
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Circuit shown in Figure 3-175. Regulator connected between one phase and neutral. It applies to the rated voltage of 380V torque motor. This method than the degree of the imbal..
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The circuit, shown Figure 1, depicts an application with
two keys. The PIC16C54 is normally in SLEEP mode
consuming very little operating current. If either of the
two keys is pressed, the PIC16C5X wakes up, scans
the keys and turns on one or both of the....
-
This simple Batteries charger circuit is designed for NiMH/NiCd batteries. It need no micro-controller nor any programming. Linear Technology Corporation...
-
The following circuit shows about servo motor driver. This circuit based on the 12F675 IC. Features: Timer 0 timing, single control line from ....
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Clip sync output to TTL level seems to take some more time to fit the extra parts on the board; as a quick fix, put a ZPD4. 7 (4. 7 V Z-Diode) between SGand ground at the POWERswitch (ring to SG) and a 1k resistor between the SGoutput from the BOTPCBand the....
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DIY Homemade Tesla Coil Tuner. How to make a Tesla Coil Tuner from easily obtainable parts. Find the resonant frequency of Tesla Coil parts....
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Car radio application using class AB Audio Power Amplifier usually has TDA7360 inside it. It is a22W bridge or stereo audio ampwith features such as minimum external components, high output power, fixed gain, clipping detector and etc. Above circuit diagram....
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As shown for the excellent performance of the low frequency signal generating circuit. The characteristics of this circuit is leveled good performance, high output power, wavef..
-
The circuit is based on an LM3914N bar graph display driver device (IC1), which can be used to drive up to ten LEDs. This is connected so that with OV12 at the input only the first LED indicator switches on. This simple peak reading VU meter circuit uses six....
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The following diagram is the circuit diagram of 20W power amplifier which build based tube component EL34. EL34 is very famous tube and great for power tube amplifier. The circuit above is complete circuit contains tube amplifier circuit diagram and power....
-
The STK672-050 is a unipolar constant-current chopper- type externally-excited 4-phase stepping Motor Driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed con- troller built-in to realize a high torque,....
-
This is V2 update of Atmega8 Volt-Ammeter. This new version features the following upgrades, Low power consumption Better Amperes display resolution while using low value drop resistor. Much smaller PCB size, only 5cm x 5cm. Still no SMD components. Easy....
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The ambit works abundant like the aboriginal Strobos. except that a beaming tube is used. Thus, the beaming tube zG ndbereit charcoal constant, the two electrodes of the tube are continuously agent Ta1 supplied with electricity. This accepted makes the two....
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The easy way to power your projects Here is the circuit diagram of regulated power supply. It is a small power supply that provides a regulated voltage, a....
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The single-transistor inverter circuit illustrated earlier is actually too crude to be of practical use as a gate. Real inverter circuits contain more than one transistor to maximize voltage gain (so as to ensure that the final output transistor is either in....
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The amplifier feeding to the final amplification stage is performed with unstabilized voltage. The output stage, due to push-pull operation, has a large rejection of the supply voltage. The various other steps, however, do not have the same rejection and....
-
The 555 is a highly stable device for generating accurate time delays or oscillation. Aditional terminals are provided for triggering or resetting if desired. In the time delay (monostable) modeof operation the time is precisely controlled by one extrernal....
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Switch a water solenoid valve using two water level switches, one will be placed at the top of a tank and will be NO (when water level is between full and empty) so that it will send a signal to the relay when the water reaches the top to stop the solenoid.....
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Transmitting Voice Wirelessly Using Laser, Tips & Tweaks, Windows tips and tweaks to enrich your computer operating system experience ....
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Every self-respecting DIYer makes his own electronic dice with LEDs as spots. Then you don t have to throw the dice anymore just push the button. The electronics also ensures that nobody can try to improve his luck by fiddling with the dice. Too bad for sore....
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The circuit shows how to interface the ds1820 to microcontroller. As you can see the first pin is connected to GND, the third pin is connected to VCC & the second pin is connected to the Microcontroller. So when the temperature is sensing, it give the sensor....
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This circuit uses inexpensive, common components to generate a precise dial tone for phone applications (see the figure). Ul (an Intel 82C54 timer-counter) generates 350 and 440Hz square waves that are filtered by Rl/Cl and R,JC2, and mixed together by....
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The following circuit shows about ?DTMF Remote Domestic System Control Circuit Diagram. Features: DTMF signals can be transmitted over a radio to ...
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This circuit is an inverting amplifier with an output voltage swing from essentially 0 to +300 V. Any transistor can be used for Q1, provided that the breakdown voltage is greater than 300 V (because the full high voltage will be applied across Q1). Biasing....
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Here is the circuit diagram of a very simple wire loop alarm based on a N-channel enhancement FET 2N700, a buzzer and few passive components. In normal condition the gate of 2N700 (Q1) is connected to the ground through a 100K resistor (R2) and the wire....
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The 5-MHz track and hold shown here has a 400-kHz power bandwidth driving ±10 V. A buffered input follower drives the hold capacitor, C4, through Ql, a low resistance FET switch. The positive hold conuuand is supplied by TTL logic, with Q3Ievel shifting....
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The Chameleon II Power Supply Circuits take the raw input supply and provide the steady voltage supplies required by the Chamelon interfaces. The supplies are +5V, +12V and -12V...
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Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
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This circuit is a bidirectional amplifier that can amplify both signals of a duplex telephone conversation. It uses the principle of negative resistance. Obviously, such an amplifier could easily be unstable; however, you can adjust Rl for maximum....
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Anyone who has been to a night club, concert or school dance has probobly seen a colour organ. Colour organs cause lights to blink and flash to music from your TV, stereo, guitar and even your own voice. The colour organ presented here needs no connection to....
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Precision DACs are essential in many consumer, industrial, and military applications, but high-resolution DACs can be costly. Frequency-to-voltage converters have good nonlinearity specificationstypically, 0.002% for the AD650and are inherently monotonic.....
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The circuit uses a four-bit latch (Ul). What makes the circuit sequential is that the set input of the first bit latch is tied..
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This project combines two popular themes from radio history ”crystal radios and shortwave (SW) listening. It`s designed from scratch by our non-resident engineer Walter Heskes. Despite all of the advances in modern electronics, there are thousands of crystal....
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Circuit shown in Figure 3-164. The circuit can be manual and automatic two ways. During startup, KA normally closed contact relay FR hot heating element shorted, in order to av..
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This is an image Schematic. No Description available...
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At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply....
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The indicator is intended for use with an audio amplifier or preamplifier, but it can also be used in othe..
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This circuit delivers an initial voltage of 2. 5V per cell to rapidly charge a car battery. The charging current decreases as the battery charges and when the current drops to 180 mA the charging circuit reduces the output voltage to 2. 35 V per cell,....
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LCD segment number growth increases the pin number of package in LCD driver. The LCD driver IC with key-scan function makes the burden of microprocessor light. But it increases the pin number more, and it is difficult to be mounted in the board for large IC.....
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A thirty mining lamp control ASIC production delay lamp circuit is very simple. Pour in. H L2102 IC Wuxi love core Microelectronics Co., Ltd. (lmp, WV.7W. Wx.sjc.t n) Productio..
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This circuit is a real core of the dimmer system. This circuit generates ramp 100 Hz signal which is syncronized to the incoming mains voltage. The ramp signal which is generated will start form 10V and go linearly down to 0V in 10 milliseconds. At the next....
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Another application of FVC (frequency-to-voltage converter) is tone/frequency decoder. This circuit is used to determine the frequency band of an oscillation...
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This circuit is designed to create an early warning alarm system for any form of theft that are important to the owners of a motorcycle or bicycle. This alarm system can be used a number of normally open switches such as mercury (italics) switch. It works by....
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Do you drive an older car without an automatic "lights-on" warning circuit If so, you`ve probably accidentally left the lights on and flattened the battery on one or more occasions. This headlights reminder circuit will prevent that. It`s more complicated....
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If you do same after W2 will have maximum voltage the released S1 on W2 shortly after short circuit will create BEMF in W2 which is usualy up 20-30 times higher than voltage before. When you learn this method by doing actual testing the similarities will be....
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Attenuation of ultrasonic pulses boomed through test piece reveals presence and extent of internal defects, such as nonbonds between aluminum cladding and uranium core. Test piece and transducers are submerged in water to provide good coupling for 900-kc....
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The rechargeable Li-ion, I began to intensely interested last summer, when I managed to bring a holiday without a phone charger. After several experiments involving originated in Figure 1, which has proved. Involvement of the stage provides a limited current....
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This circuit has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz square wave to the input. All graphs were produced using Tina Pro...
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The losses in a bridge rectifier can easily become significant when low voltages are being rectified. The voltage drop across the bridge is a good 1.5 V,....
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The circuit designed for teaching demonstration or experiment with it to hear the signal voltage electrocardiogram. ECG signal voltage is..
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This Application Note describes the evaluation board for the AD7892-2 12-Bit A/D converter The AD7892-2 is a high speed, low power, 500ksps successive approximation ADC which operates from a single +5V supply. It incorporates an on chip track/hold Amplifier....
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The equalizer presented in this article is suitable for use with hi-fi installations, public-address systems. mixers and electronic musical instruments. T....
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The schematic that this is based on is my own, so it is free from Intellectual property restrictions. It is based around a 555 timer (so it could be an extension of the recent "Know Your 555 timer" article), and uses an ubiquitous LM386 audio amp so it can....
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Check the three-phase motor with broken bars As shown in the three-phase motor with broken bars of inspection circuit: ..
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The objective of this project was to design a small portable mixer supplied by a 9V PP3 battery, keeping performance quality. The mixer is formed assembling three main modules that can vary in number and / or willingness to adapt to the needs of all.....
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The fridge cut in and the lights got brighter. I thought we were imagining it but we watched for several cycles, and it kept happening. Then we tried turning on the microwave, and the lights got dimmer. But the fridge definitely made it get brighter. I think....
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The following circuit shows about 2000W Power Amplifier Circuit Diagram. This circuit using the BC560C Transistor. Features: hard enough to ....
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One reason why commercial soldering stations are expensive is that, in general, they require the use of soldering irons with inbuilt temperature sensors, such as thermocouples. This circuit eliminates the need for a special sensor because it senses the....
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As a result of the circuit shown in Darlington type phototransistor as the sensing element, the more sensitive to low light, suitable for the reflected light detection signal. ..
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The 555 is configured in the standard astable oscillator circuit designed to give a square wave cycle at a period of around 1 cycle/sec. A potentiometer is included in the design so the period can be set to exactly 1 second by timing the LED flashesc. A....
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The figure is a simple dimming lights line, the light is adjusted by the multi-speed control switch K. When K to position "1" lights out; when K to position "2", the light..
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This is a four channel amplifier ideally suited for use with quadraphonic equipment such as a Sound Blaster Live card. There is no volume control, audio levels being directly controlled from the sound card itself. Construction is straight forward and is....
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Program an ATmega1284p with my AVR Dragon and the Arduino IDE. So far I have installed mighty1284p, after writing my sketch. I compile it using the Arduino IDE and then cd into the (temporary) directory the sketch is build in. It contains the. hex file, as....
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simple siren or alarm using MC1458 dual op-amp and audio power amplifier LM380 circuit diagram with descriptions various siren, doorbell, alarm circuit with parts list...
The 555 timer will put out positive pulses. The pulse width is inversely proportional to the difference in voltage between the voltage at "ANALOG IN" and the voltage of the 4. 7uF capacitor(let`s say 2. 5 volts). To calibrate this circuit, hook it up to a....
Circuit works The danger zone warning circuit from the regulator circuit, the pyroelectric infrared detection trigger circuit, electronic switching circuit, voice circuits, aud..
AD9835 is a DDS (direct digital synthesis) chip from Analog Devices. It contains a phase accumulator, sinewave table, and 10-bit D/A converter. In can be used for phase and frequency modulation by selecting the phase and frequency of the signal either under....
220V (5Hz) alternating voltagepass Z1 circuit filter filtering, then it will send to the connect point of AC over voltage, under voltage protect relay K2. When normal working, K2 connect point should up-close, connect AC 220V voltage to AC current-limiting....
The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound card to use a common....
This is a design circuit for high frequency waveform generator is very useful in electronic experiment and design. This circuit is generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. Th ....
Figure (a) shows a block diagram of the internal structure of the M62213FP. M62213FP is a high speed switching power supply controller. It consists of an oscillator, PWM compar..
This Line Following Robot sensor or surface scanner for robots is a very simple, stamp-sized, short range (5-10mm) Infrared proximity detector wired around a standard reflective opto-sensor CNY70(IC1). In some disciplines, a line following robot or an....
The main system is the user interface and control system. The phone line was chosen as the method of interfacing because it has distinct advantages over other systems in communicating information from a distance. The next image serves as a block diagram for....
Build a 10W LED flashlight that features swappable UV/IR/visible heads. We decided to document the build since this flashlight would fit nicely in a photographer`s kit for light painting, IR illumination, UV reflected photography, or UV fluorescence....
A sidetone oscillator is a special audio astable multivibrator. Keying is accomplished oscillator that is turned on and off with the by applying a positive dc potential, developed transmitter. The oscillator is rf-driven and bat- from the rf signal, to the....
Car audio amplifier schematic diagram. Given the voltage of the car is +12 V, we have the opportunity to take power over a threshold. The solution is to use two amplifiers in bridge connection, so the output quadrupled, at least theoretically, and at best,....
This circuit is intended to signal, through a flashing LED, the exceeding of a fixed threshold in room noise, chosen from three fixed levels, namely 50, 70 & 85 dB. Two Op-amps provide the necessary circuit gain for sounds picked-up by a miniature electret....
Most of the CDROMS available have an Audio-Out Output to either plug in the headphones or connect it to an amplifier. This circuit enables one to use the CDROM as a stand alone Audio CD player without the computer. This circuit is nothing but a power....
Amp 2SC2922 and 2SA1216 (or 2SC3264 and 2SA1295) performance is very excellent more, it is good linearity, strong overload. Use it as a high-fidelity power amplifier stage amplifier, the performance is very excellent photos...
Circle MIC to lift the damper after it is converted into a voltage signal sounds, the op amp A buffer enemy, one road goes to the motor drive circuit for controlling the motor ..
Using a transistor won`t give accurate results, moreover the setting part would become very tedious. The circuit is technically correct, if you can adjust the tripping point correctly, then it might just work. Vinod: I made the charger (hysteresis) but there....
What is the purpose of this circuit? Basically it has two roles: to pass the desired low frequency signals and stop the unwanted high frequency signals. Open the netlist file lpfilter1.cir” with your SPICE simulator. Most simulators display the netlist in a....
This circuit of multimedia speakers for PCs has single-chip-based design, low-voltage power supply, compatibility with USB power, easy heat-sinking, low c....
The circuit is a divider by 64 used in many RF applications like as satellite receiver, digital tuners, frequency counters, PLL, etc. The heart of circuit is an IC named SAB6456, but you can use SDA2101 or other equivalent chips. Each output is NOT of the....
This add-on circuit enables remote switching on/off of battery-operated toy cars with the help of a TV/video remote control handset operating at 30 40 kHz. When the circuit is energised from a 6V battery, the decade counter CD4017 (IC2), which is configured....
220V AC voltage through the transformer T transformer is 19V, after full-wave bridge rectifier, filter capacitor c], terminal regulator blocks 7812 after regulators into DC vol..
AN6591FJM is a single chip IC optimum for PHS, and a quadrature Modulator reception IF and PLL are inte- grated in it. As this IC is housed in a QFN package (quad flat non- leaded PKG), realization of compact equipment through this super-small package is....
Firstly, it demonstrates how the combination of a blue and a white LED can be used to give a realistic imitation of a camera flashlight. Secondly, the goo....
The Linkwitz transform circuit (or EAS principle) will allow any driver to extend to 20 Hz or even lower. A good quick test is to stick the speaker in a box, and drive it to 50 or 100W or so at 20 Hz - you should see a lot of cone movement, a few things will....
Asynchronous motor reactive power compensation on the spot, is the capacitor directly connected with the asynchronous motor stator windings connected to increase the power of a..
Due to the lack of speed in the entire series TTL monostable multivibrator, and because of the requirements of ECL voltage swing wide range of small and power, which drives us to use F series circuit having a fast transition..
Those drivers could run fourteen leds but just went with twelve. This means that i could add 12 leds to mine with no extra drivers. Not that i will do that now but if my tank gets bigger (honey i swear the tank has been growing from day one you just havent....
Circuit shown in Figure 3-175. Regulator connected between one phase and neutral. It applies to the rated voltage of 380V torque motor. This method than the degree of the imbal..
The circuit, shown Figure 1, depicts an application with two keys. The PIC16C54 is normally in SLEEP mode consuming very little operating current. If either of the two keys is pressed, the PIC16C5X wakes up, scans the keys and turns on one or both of the....
This simple Batteries charger circuit is designed for NiMH/NiCd batteries. It need no micro-controller nor any programming. Linear Technology Corporation...
The following circuit shows about servo motor driver. This circuit based on the 12F675 IC. Features: Timer 0 timing, single control line from ....
Clip sync output to TTL level seems to take some more time to fit the extra parts on the board; as a quick fix, put a ZPD4. 7 (4. 7 V Z-Diode) between SGand ground at the POWERswitch (ring to SG) and a 1k resistor between the SGoutput from the BOTPCBand the....
DIY Homemade Tesla Coil Tuner. How to make a Tesla Coil Tuner from easily obtainable parts. Find the resonant frequency of Tesla Coil parts....
Car radio application using class AB Audio Power Amplifier usually has TDA7360 inside it. It is a22W bridge or stereo audio ampwith features such as minimum external components, high output power, fixed gain, clipping detector and etc. Above circuit diagram....
As shown for the excellent performance of the low frequency signal generating circuit. The characteristics of this circuit is leveled good performance, high output power, wavef..
The circuit is based on an LM3914N bar graph display driver device (IC1), which can be used to drive up to ten LEDs. This is connected so that with OV12 at the input only the first LED indicator switches on. This simple peak reading VU meter circuit uses six....
The following diagram is the circuit diagram of 20W power amplifier which build based tube component EL34. EL34 is very famous tube and great for power tube amplifier. The circuit above is complete circuit contains tube amplifier circuit diagram and power....
The STK672-050 is a unipolar constant-current chopper- type externally-excited 4-phase stepping Motor Driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed con- troller built-in to realize a high torque,....
This is V2 update of Atmega8 Volt-Ammeter. This new version features the following upgrades, Low power consumption Better Amperes display resolution while using low value drop resistor. Much smaller PCB size, only 5cm x 5cm. Still no SMD components. Easy....
The ambit works abundant like the aboriginal Strobos. except that a beaming tube is used. Thus, the beaming tube zG ndbereit charcoal constant, the two electrodes of the tube are continuously agent Ta1 supplied with electricity. This accepted makes the two....
The easy way to power your projects Here is the circuit diagram of regulated power supply. It is a small power supply that provides a regulated voltage, a....
The single-transistor inverter circuit illustrated earlier is actually too crude to be of practical use as a gate. Real inverter circuits contain more than one transistor to maximize voltage gain (so as to ensure that the final output transistor is either in....
The amplifier feeding to the final amplification stage is performed with unstabilized voltage. The output stage, due to push-pull operation, has a large rejection of the supply voltage. The various other steps, however, do not have the same rejection and....
The 555 is a highly stable device for generating accurate time delays or oscillation. Aditional terminals are provided for triggering or resetting if desired. In the time delay (monostable) modeof operation the time is precisely controlled by one extrernal....
Switch a water solenoid valve using two water level switches, one will be placed at the top of a tank and will be NO (when water level is between full and empty) so that it will send a signal to the relay when the water reaches the top to stop the solenoid.....
Transmitting Voice Wirelessly Using Laser, Tips & Tweaks, Windows tips and tweaks to enrich your computer operating system experience ....
Every self-respecting DIYer makes his own electronic dice with LEDs as spots. Then you don t have to throw the dice anymore just push the button. The electronics also ensures that nobody can try to improve his luck by fiddling with the dice. Too bad for sore....
The circuit shows how to interface the ds1820 to microcontroller. As you can see the first pin is connected to GND, the third pin is connected to VCC & the second pin is connected to the Microcontroller. So when the temperature is sensing, it give the sensor....
This circuit uses inexpensive, common components to generate a precise dial tone for phone applications (see the figure). Ul (an Intel 82C54 timer-counter) generates 350 and 440Hz square waves that are filtered by Rl/Cl and R,JC2, and mixed together by....
The following circuit shows about ?DTMF Remote Domestic System Control Circuit Diagram. Features: DTMF signals can be transmitted over a radio to ...
This circuit is an inverting amplifier with an output voltage swing from essentially 0 to +300 V. Any transistor can be used for Q1, provided that the breakdown voltage is greater than 300 V (because the full high voltage will be applied across Q1). Biasing....
Here is the circuit diagram of a very simple wire loop alarm based on a N-channel enhancement FET 2N700, a buzzer and few passive components. In normal condition the gate of 2N700 (Q1) is connected to the ground through a 100K resistor (R2) and the wire....
The 5-MHz track and hold shown here has a 400-kHz power bandwidth driving ±10 V. A buffered input follower drives the hold capacitor, C4, through Ql, a low resistance FET switch. The positive hold conuuand is supplied by TTL logic, with Q3Ievel shifting....
The Chameleon II Power Supply Circuits take the raw input supply and provide the steady voltage supplies required by the Chamelon interfaces. The supplies are +5V, +12V and -12V...
Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
This circuit is a bidirectional amplifier that can amplify both signals of a duplex telephone conversation. It uses the principle of negative resistance. Obviously, such an amplifier could easily be unstable; however, you can adjust Rl for maximum....
Anyone who has been to a night club, concert or school dance has probobly seen a colour organ. Colour organs cause lights to blink and flash to music from your TV, stereo, guitar and even your own voice. The colour organ presented here needs no connection to....
The circuit uses a four-bit latch (Ul). What makes the circuit sequential is that the set input of the first bit latch is tied..
This project combines two popular themes from radio history ”crystal radios and shortwave (SW) listening. It`s designed from scratch by our non-resident engineer Walter Heskes. Despite all of the advances in modern electronics, there are thousands of crystal....
Circuit shown in Figure 3-164. The circuit can be manual and automatic two ways. During startup, KA normally closed contact relay FR hot heating element shorted, in order to av..
At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply....
The indicator is intended for use with an audio amplifier or preamplifier, but it can also be used in othe..
This circuit delivers an initial voltage of 2. 5V per cell to rapidly charge a car battery. The charging current decreases as the battery charges and when the current drops to 180 mA the charging circuit reduces the output voltage to 2. 35 V per cell,....
LCD segment number growth increases the pin number of package in LCD driver. The LCD driver IC with key-scan function makes the burden of microprocessor light. But it increases the pin number more, and it is difficult to be mounted in the board for large IC.....
A thirty mining lamp control ASIC production delay lamp circuit is very simple. Pour in. H L2102 IC Wuxi love core Microelectronics Co., Ltd. (lmp, WV.7W. Wx.sjc.t n) Productio..
This circuit is a real core of the dimmer system. This circuit generates ramp 100 Hz signal which is syncronized to the incoming mains voltage. The ramp signal which is generated will start form 10V and go linearly down to 0V in 10 milliseconds. At the next....
Another application of FVC (frequency-to-voltage converter) is tone/frequency decoder. This circuit is used to determine the frequency band of an oscillation...
This circuit is designed to create an early warning alarm system for any form of theft that are important to the owners of a motorcycle or bicycle. This alarm system can be used a number of normally open switches such as mercury (italics) switch. It works by....
Do you drive an older car without an automatic "lights-on" warning circuit If so, you`ve probably accidentally left the lights on and flattened the battery on one or more occasions. This headlights reminder circuit will prevent that. It`s more complicated....
Attenuation of ultrasonic pulses boomed through test piece reveals presence and extent of internal defects, such as nonbonds between aluminum cladding and uranium core. Test piece and transducers are submerged in water to provide good coupling for 900-kc....
The rechargeable Li-ion, I began to intensely interested last summer, when I managed to bring a holiday without a phone charger. After several experiments involving originated in Figure 1, which has proved. Involvement of the stage provides a limited current....
This circuit has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz square wave to the input. All graphs were produced using Tina Pro...
The losses in a bridge rectifier can easily become significant when low voltages are being rectified. The voltage drop across the bridge is a good 1.5 V,....
The circuit designed for teaching demonstration or experiment with it to hear the signal voltage electrocardiogram. ECG signal voltage is..
This Application Note describes the evaluation board for the AD7892-2 12-Bit A/D converter The AD7892-2 is a high speed, low power, 500ksps successive approximation ADC which operates from a single +5V supply. It incorporates an on chip track/hold Amplifier....
The equalizer presented in this article is suitable for use with hi-fi installations, public-address systems. mixers and electronic musical instruments. T....
The schematic that this is based on is my own, so it is free from Intellectual property restrictions. It is based around a 555 timer (so it could be an extension of the recent "Know Your 555 timer" article), and uses an ubiquitous LM386 audio amp so it can....
Check the three-phase motor with broken bars As shown in the three-phase motor with broken bars of inspection circuit: ..
The objective of this project was to design a small portable mixer supplied by a 9V PP3 battery, keeping performance quality. The mixer is formed assembling three main modules that can vary in number and / or willingness to adapt to the needs of all.....
The fridge cut in and the lights got brighter. I thought we were imagining it but we watched for several cycles, and it kept happening. Then we tried turning on the microwave, and the lights got dimmer. But the fridge definitely made it get brighter. I think....
The following circuit shows about 2000W Power Amplifier Circuit Diagram. This circuit using the BC560C Transistor. Features: hard enough to ....
One reason why commercial soldering stations are expensive is that, in general, they require the use of soldering irons with inbuilt temperature sensors, such as thermocouples. This circuit eliminates the need for a special sensor because it senses the....
As a result of the circuit shown in Darlington type phototransistor as the sensing element, the more sensitive to low light, suitable for the reflected light detection signal. ..
The 555 is configured in the standard astable oscillator circuit designed to give a square wave cycle at a period of around 1 cycle/sec. A potentiometer is included in the design so the period can be set to exactly 1 second by timing the LED flashesc. A....
The figure is a simple dimming lights line, the light is adjusted by the multi-speed control switch K. When K to position "1" lights out; when K to position "2", the light..
This is a four channel amplifier ideally suited for use with quadraphonic equipment such as a Sound Blaster Live card. There is no volume control, audio levels being directly controlled from the sound card itself. Construction is straight forward and is....
Program an ATmega1284p with my AVR Dragon and the Arduino IDE. So far I have installed mighty1284p, after writing my sketch. I compile it using the Arduino IDE and then cd into the (temporary) directory the sketch is build in. It contains the. hex file, as....
simple siren or alarm using MC1458 dual op-amp and audio power amplifier LM380 circuit diagram with descriptions various siren, doorbell, alarm circuit with parts list...
