New Circuits Page 152
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Here is a circuit of a precision amplifier with digital control can be useful for signal conditioning of low output transducers in milli volt range. The resistors R3 to R6 can be selected by the user and can be anywhere from 1 kilo-ohm to 1 meg-ohm to select....
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The following article explains how to design a minimal Running Disco Light Circuit Diagram using IC 4017. The IC 4017 is a 16 pin dual featuring in line package IC consists of a 10 stage decade counter/barrier. further in a row in this area the IC 4017....
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When you want to build the lead-acid battery charger project for 6V battery or 12V. Although there are many methods to choose from. I like using IC LM317....
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The logical first choice was to start out with simple regenerative circuits. Just one or two transistors and maybe a simple audio amplifier using one integrated circuit. I already have a few simple tube radios that I bought at flea markets, so I will defer....
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The goal was to make a small USB interface board which could easily be connected to microcontroller boards. It should support USB-powered as well as externally-powered operation. External components are kept at a minimum (but there are still quite a lot of....
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The Zero Volt Diode (ZVD) is a circuit useful in a variety of applications including solar chargers of all types. It is a novel circuit in which a power MOSFET acts like a very low voltage drop diode that switches state at 0V and which is used to conduct....
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How to use the Galleon System modules to build a radio time receiver to use the 60 kHz MSF time signal from the atomic clock at Anthorn Cumbria....
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This circuit uses a ring counter made up of Q3, Q4 and Q5. Q2 acts as an oscillator which triggers the SCRs Q3, Q4 and Q5 in sequence. When an SCR fires, a 0. 2 F ca-pacitor provides commutation, shutting off the previous stage. Triacs Q6, Q7 and Q8 control....
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It`s a classic designing of final amplifier 35 W, with two EL34 in push-pull, from the Siemens and Halske, with year of designing 24/3/1953 and code SV410/1. The amplifier it worked from 1954 until 1989, whenever it came also out except operation, with mean....
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This is is a stereo power amplifier circuit works up to 22W on each channel. It will be 2x22W output. A few externel components required to support the main component of TDA1554. Heatsink on the power IC is a must to prevent overheating on the power IC. The....
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Wideband a transmission or communication channel or medium which consists of a wider bandwidth than one voice channel with a carrier wave of a certain modulated frequency and is capable of transmitting more information than narrowband but less than broadband....
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A simple USB FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio by connecting it to an USB port. The circuit use no coils that have to be wound. This USB transmitter can be used to listen to your....
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This circuit detects when a window is open (it can also be used with a door), indicates that the window is open by means of a red LED or a blinking LED, and emits a loud acoustic signal from an intermittent electronic buzzer to remind you to close the....
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DHT11 is the most inexpensive sensor currently available in the market that provides calibrated digital outputs for temperature and relative humidity. It is availab....
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Here is a circuit that uses a mosfet amplifier as the main booster, or the basis of this booster Amplifier. Circuit which uses MOSFET Power Amplifier is powered by the output more than 200W Speaker 8 Ohm impedance. We also include a suitable power supply....
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This is Simple and cheap approach to Line Following Robot, This do not have anymicro controller but just a simple basic Circuit on three 555 timers. It has a good efficiency on following all kind of curves. This Robot is no more than 1000PKR. To make a....
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Electronic thermometer has countless applications. Not everywhere can we use the standard mercury thermometer, for example, due to its size, frailty or the need to measure from the distance. The advantage of electronic thermometers are also small size and....
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This small transmitter uses a hartley type oscillator. Normally the capacitor in the tank circuit would connect at the base of the transistor, but at VHF the base emitter capacitance of the transistor acts as a short circuit, so in effect, it still is. The....
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This threads explains how I`ve made my custom USB tyre pressure monitoring system by hacking this aftermarket kit bought on eBay. The first step was....
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At the same time, pulses obtainable from pin 1 will be of 1. 25 Hz and 20 Hz at pin 14. The three output pins of IC1 are connected to base terminals of transistors T1, T2, and T3 through resistors R1, R2, and R3, respectively. Working with a built-in....
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The purpose was to create an octave and have the ability to play it when a crocodile paddle was pressed. I made this device because I like music and I thought the ability to control the sound with your feet would be cool. This project is to preform the....
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We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we are involved in the problems of article content, copyright or other problems. We will delete it soon. ..
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The IC1 is a 555 timer IC is connected for, Astable operation the clock pulses are fed to the IC2 via the 10K resistor. The IC2 is a 10 stage counter, output 6 (pin 5) is connected to RESET (pin 15), thus giving us a 6 stage counter, outputs 0 to 5. The 6 of....
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How hard it would be to convert the relay in this design to a triac It switches a 120v Ni-chrome wire that is 60ohms. Thanks for any help you can offer. Your right i apologize. The ic powers off of a 12v transformer. However there is a 120v neutral and line....
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This circuit shows about Honda S90 Haynes Electrical Wiring Circuit Diagram. Features: shows the connection between Honda parts Component: fuse ....
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Hello. I am trying to design an LC Colpitts oscillator. This is the circuit. I came up with this based on the Colpitts oscillator shown on this....
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Low-drain circuit operating from 1. 5-V cell uses National LM3909 flasher ICs to simulate "whooper" sounds of electronic sirens used on some city police cars and ambulances. Two flashers are required for generating required rapidly rising and falling....
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Even including labor I would think that the real cost of purchasing, stocking, assembly, assembly mistakes, more expensive PCB (more holes, larger), more difficult to tune, etc. would cause it to be much more expensive...
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2003 GMC Savana Instrument cluster illumination lights and climate control cluster lights out. Cluster diagnostic lights good and come on ignition start up. Radio lights good and do dim with lights dimmer. Instrument lights fuse under hood good. Cluster was....
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Developing a battery switch-over circuit which is made of two lanes of the depicted circuit. Operation voltage range is from 3V. 12V. Only one lane should be enabled at a time which is governed by logic not included in the schematic. Each lane can....
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Here the AM Radio receiver circuit diagram based on old single IC MK484. Components part list: R9, R10_ 6R8 R6_ 100R R3_ 1K R1_ 4K7 R7_ 5K6 R4_ 10K R2_ 100K R5_ 150K R8_ 820K Pot_ 10K log pot Coil & ferrite bar set C7_ 470p ceramic C, C4, C5, C6_ 470nF....
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This simple circuit mixes two or more channels into one channel (e.g. stereo into mono). The circuit can mix as many or as few channels as you like and consume very little power. The mixer is shown with two inputs, but you can add as many as you want by just....
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A very nice universal window based software designed to work with any serial programmers for PIC16F84, i. e. , WPicProg16 V1. 20. Build this programmer before start constructing the coming many interesting F84 projects. Some PIC programmers can be used for....
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Trigger programming with its build-in pushbutton. The solution I came up with was to add a tiny USB keyboard circuit to the pen`s interface. One method to have the pushbutton trigger a programming command would have been to add a microchip to the pen`s....
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Note: If you would like to learn more about the circuit that powers the Sifteo Base audio read on! Otherwise feel free to skip to the next step. Our....
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The battery charger pictured here is a real beast. It will dump 60 amps into a 12 volt battery bank that is low, and will taper down to about 10 amps charging current as the batteries fill. Total cost, $20! The basis of this charger is dead 1000 watt....
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This circuit is a temperature controlled version of Repeating Timer No.3 . The light dependent resistor has been replaced by a temperature dependent resistor or thermistor. And a small preset potentiometer lets you choose the temperature above which the....
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60W Bass Amplifier. Low-cut and Bass controls Output power: 40W on 8 Ohm and 60W on 4 Ohm loads Amplifier circuit diagram: Amplifier...
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Our reader Andrea (andrea[dot]perugia[-at-]gmail[dot] com) sent his circuit to us, and he creates the circuit for educational intent. The main purpose is to show that you can toggle an output state electronically, although physically you use only a push....
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This circuit have applied to line detection of robot project, Good match between the transmitter and the detector is important for proper operation, especially if the hole is large. Robot with a simple object or obstacle detection. Infrared Transmitter....
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The NE5539 wideband op amp is easily adapted for use as a color video amplifier. The gain varies less than 0.5% Irom the bottom to the top of the staitVlse. The maximum differential phase is approximately 0.1. The amplifier circuit was optimized for a 75-ohm....
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If you want to to try to make a Dashboard Digital Voltmeter Circuit Diagram including part lists, the PCB building and the placement of the components, you may download the article in full pdf here..
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Smart Valentine`s Day gift - a movement-sensing box of chocolates with an LED message! Circuit diagram and How to build the project on ATtiny13 and Arduino...
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A basic Wien Bridge Oscillator using a filament lamp with an op amp. It is a property of filament lamps that the resistance of the tungsten filament increases in a non-linear manner as the filament heats up. The lamp in Fig. 3. 4. 1 is connected in the....
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Before you use LEDs, it`s a good idea to check them out. With a LED tester, you can even do it in the dark! LEDs are available nowadays in all shapes and colors. There are types with clear, colorless packages, while others have colored plastic packages. Many....
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This is a motor controller circuit that? control the speed? and direction of series-wound Motors. This circuit employs silicon controlled rectifiers (SCR)...
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As shown in the figure is a preset outage timer of electric cooker circuit. Time of the timing circuit ranges from 1 hour to 12 hours, which can be regulated by PR.The timing mode is counting typeand control method mode is preset outage timing. The circuit....
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The electronic designs for the two animatronic mouths can be seen below. The first design is for the articulated mouth, the extra servos are for the eyebrows and eyes. The second design is for the LCD mouth. It is very similar to the custom characters on an....
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This Mark3 version of the Infra Red extender is a special version designed to control appliances that use high frequency modulated IR remote...
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The back EMF voltage spikes produced by stepper motors (particularly higher voltage motors) can damage your PC`s printer port if connections are made incorrectly, flyback diodes are absent or connected in reverse, etc. The safest options are opto-isolated or....
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The Advanced Laser Diagnostics Laboratory (ALDL) specializes in the development and application of laser diagnostics for fluid dynamic measurements. Areas of specialization include high-repetition rate flow visualization (up to 1 million frames/sec) and....
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A very simple encoder circuit for a dc motor can be constructed using this circuit diagram. As you can see in the circuit diagram, the system shown consists of the HA-2542, a small 12-Vdc motor, and a position encoder. During operation, the encoder causes a....
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The filter R1, R2 and C1 integrate the PWM waveform. But what is the point of the op-amp It looks like a non-inverting amplifier to me, with the gain set by R6 and R7 - if I`m not mistaken. But why does the integrated DC voltage need amplification Perhaps, I....
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Here is simple circuit of a simple emergency light that can be constructed without much pain. The components of this circuit are 2 transistors, a transformer, 20 Watt fluorescent tube, 6V battery and some resistors and pots. the transformer of this emergency....
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We can say in simple words that AFC will lock the receiver to any valid RF signal. Below, we can see a basic block diagram of an receiver. The VCO is mixed with...
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The DE2 board provides four pushbutton switches. Each of these switches is debounced using a Schmitt Trigger circuit, as indicated in Figure 1. The four outputs called KEY0, . , KEY3 of the Schmitt Trigger device are connected directly to the Cyclone II....
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This circuit was designed for use in a hifi showroom, where a choice of speakers could be connected to a stereo amplifier for comparative purposes. It could be used for other similar applications where just one of an array of devices needs to be selected at....
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Using a LM1458 dual op amp IC. The circuit takes the audio signal rom the condenser microphone and amplifier it, so you can use the microphone as the input to some device which wouldn`t normally accept microphone level signals. The circuit requires a 6-9....
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Normally, digital speedometers are found only in luxury cars and high-end motorbikes. Even if your motorbike has a mechanical speedometer, what will you do when it gets damaged? First, It is a digital Speedometer which shows the speed and Kilometers in....
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This application note describes how to transmit I ²S audio data streams between two audio components across a single, shielded twisted-pair (STP) wire using the MAX9205 10-bit LVDS serializer and the MAX9206 10-bit LVDS deserializer. Low-voltage differential....
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This ultra-bright white LED lamp works on 230V AC with minimal power consumption. It can be used to illuminate VU meters, SWR meters, etc. Ultra-bright LEDs available in the market cost Rs 8 to 15. These LEDs emit a 1000-6000mCd bright white light like....
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This circuit can be used for multiple cameras with one monitor. The circuit can be operated manually or automatically. When operated automatically the swi....
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he following circuit shows about 10.7 MHz RF Amplifier And Filter Circuit Diagram. Features: capacitances of a power MOS-FET become significant, ....
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Using a MC14093 CMOS type IC, a quad 2-input NAND Schmitt trigger circuit can be designed a very simple pulse width modulation circuit controller electronic project. This pulse width modulation controller electronic project is very simple and require few....
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The heart of the circuit is an IC4822 named as IC1. IC4822 is a programmed ROM, which generates 16 musical tunes when it gets triggered. The main feature of this IC is that it has inbuilt tone generator, rhythm generator, modulator, oscillator, frequency....
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I found one circuit diagram, on one russian site, freeenergylt dot narod2 dot ru/Aidas.
Question is, diagram contains something pulse generator, for this circuit diagram need PCGU1000 equipment, for functioning the coils?..
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The ISL6315 two-phase PWM control IC provides a precision voltage regulation system for advanced loads up to 60A to 80A. Multiphase power conversion is a marked departure from single phase converter configurations employed to satisfy the increasing current....
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Very first PIC program using C language. Explains how to blink a single LED using PIC microcontroller with C program. Start learning C programming for PIC here....
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This is a design circuit for modular arrangement that allows the amateur to choose only the modules more suited to his requirements in order to build a chain one to five modules long. For the minimalist, the Control Center module described in this pa ....
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I use the lm10 IC because it has a reference voltage and that`s useful for dc power supply. With two ICs can take different output voltage and amperage. This circuit is protected from short circuit. P2 is for controlling the current at the range of 0-2A.....
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This circuit ensures that you will never again forget to switch on the lights of your car. As soon as the engine is running, the dipped beams and the sidelights are automatically switched on. The circuit also causes the dipped beams to be extinguished as....
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This little aid was originally designed to test the Shutter Time Meter. This meter was specifically designed for analogue` SLR cameras. In order to measure the exposure time of a camera accurately, it will first have to be checked with a well-defined signal....
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If you do not have EAGLE, you can download a full working version from CadSoftUSA Here is a zip file with the EAGLE schematics an....
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The video amplifier in the diagram is a well-known design. Simple, yet very useful, were it not for the ease with which the transistors can be damaged if the potentiometers (black level and signal amplitude) are in their extreme position. Fortunately, this....
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Simple silicon-controlled dimmer As shown in Figure 13, it is a simple circuit of SCR dimming lights. The w resistance in the potentiometer decreases, SCR conduction angle increases, the light`s intensity increases, the resistance enlarges, the SCR....
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These is the demo board I made based on PIC16F887 microcontroller. It is a good project for starting with PIC uC`s. It has a bootloader so an external programmer is not needed. The circuit is simple but it will let you explore some of the major features that....
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A simple Single chip FM transmitter circuit with diagram and schematic using IC MAX 2606, which is a high performance Voltage controlled oscillator or VCO....
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FM Beacon Broadcast Transmitter (88-108 MHz). This circuit will transmit a continuous audio tone on the FM broadcast band (88-108 MHz) which could used for remote control or security purposes. Circuit...
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The circuit shown here is of a TV antenna booster based on the transistor BF180. The circuit operates in the UHF band and has a gain of 15dB. Capacitors C2, C3 C4, C5 and inductors L3, L4 forms a UHF band pass filter. The input signal is fed to the emitter....
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The diagram (schematic) is the same like the SNES NTSC RGB cable from here (only put capacitors to the RGB "line") or is different Yes the diagram is correct, but without the capacitors. You can use a Gamecube SCART lead but you must remove the capacitors on....
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A robot that operates when you give messages through your phone. Your mobile becomes your remote controller of your robot. Yes, it means if robot is in London, and you are in Mumbai, you can still control your robot. A super project for diploma students that....
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One AC-DC converter that provides a good accuracy is SMPS AC-DC converter. Test data shows efficiency of 85. 4% at 230 Vac input and 6A output current and 83. 2% at 115 Vac input and 6A output current. This converter has the universal input voltage range.....