New Circuits Page 156
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Scopeclock is an easy to use hardware to make your X-Y capable analog oscilloscope more useful. Using this simple to use hardware you can convert your analog oscilloscop..
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-
The post explains a simple delay ON circuit which allows the connected load at the output to be switched ON with some predetermined delay after power switch ON. The explained circuit can be used for all applications which calls for an initial delay ON....
-
The CMX866 is a multi-standard modem for use in telephone based information and telemetry systems. Control of the device is via AT commands over a simple 9600b/s serial Interface compatible with most types of host Controller. An RS232 compatible Interface....
-
-
Make a USB to Serial Converter own with ATmega8 microcontroller. In this ATmega8 will be given free firmware source code and can be downloaded at the bottom. Because the ATmega8 there is no facility for communication with the USB, then inevitably the data....
-
To listen old vinyl LP`s in a correct sounding on a sassy with dynamic cartridge you need a circuit, named RIAA corrector. This circuit you can find in old amps, but it isn`t embedded in home cinema equipments or amplifiers can be obtained nowadays. Also, if....
-
-
This circuit takes advantage of the voltage drop across bridge rectifier diodes to produce a 5-position variable voltage supply to a DC fan or other small DC motor. It is not as efficient as a switch-mode circuit but it has the virtues of simplicity and no....
-
JFET Pierce oscillator will test any crystal from 50 kHz through 25-MHz upper frequency limit of fundamental-mode crystals without tuning, and drive counter for measuring crystal frequency, Will test overtone VHF crystals on their fundamental frequency. T1....
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-
-
A simple proximity detector (sensor) circuit diagram and schematic is shown and how to make it using proximity detector IC CS2009A-used for metal detector applications....
-
This is the latest BH1417 FM Transmitter architecture from RHOM that includes a lot of appearance in one baby package. It comes with pre-emphasis, limiter so that the music can be transmitted at the aforementioned audio level, stereo encoder for stereo....
-
Openbench Logic Sniffer is an open source logic analyzer. It`s designed to support the SUMP logic analyzer software at the lowest possible cost. Download the source and design files from the Gadget Factory project page. This project started in the comments....
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This circuit is essentially an amplified crystal set. The inductor could be a standard AM radio ferrite rod antenna while the tuning capacitor is a variab....
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The wire speed DC motor is constantly receiving about 20 volts, regardless of the state of the switch on the nozzle handle. I checked the switch with an ohm meter. The switch works fine. I even disconnected the switch from the circuit board. The motor is....
-
The program in the microcontroller knows two protocols; the one wire bus used by the DS1820 temperature sensor, and the serial protocol expected by your computer. Once power is applied, the program fetches data from the sensors and sends it to the serial....
-
This is an amplified telephone line tap, which is designed to be minimally invasive. The interconnect to the phone line has a large input impedance, and is electrically isolated from the main electronics of the circuit. I designed this for use with a DTMF....
-
This circuit explain about alternate wireless switching using ultrasonic sensor. The distance of switching range should be more than 10 meters ....
-
A circuit of measurement of level based on a typical application of National..
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-
No, wait.. the 15 KHz is the frequency that you use for drive the flyback transformer, is right, but the high voltage at the output is DC, cause....
-
A high efficiency simple 2-transistor VHF amplifier electronic circuit project can be designed using this electronic circuit diagram. This VHF amplifier electronic circuit has a very high efficiency of about 16dB gain, and requires no tuning or alignment....
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The following circuit shows about Weller WLC100 Electronic Soldering Station Circuit Diagram. This circuit using the Q4012LPH Transistor. Features: for safety, temperature controlled, soldering station and works really well for most applications, simple....
-
The transistor is biased in class A. That`s mean the collector current flows all the time. This current can increase or decrease, caused by the input signal....
-
-
Use a relatively high-end microcontroller ( Piccolo TMS320F28035, 12-bit resolution, +/- 4LSB offset, +/- 60 LSB gain ) to measure voltage across stacked battery cells and control associated analog electronics to equalize their charge. The microcontroller....
-
-
-
The LTC ®4251B/LTC4251B-1/LTC4251B-2 negative voltage Hot Swap controllers allow a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current....
-
-
-
U1a is an oscillator and U1b the measurement part of the circuit. It converts unknown capacity into a pulse-width modulated signal the same way an automotive dwell meter works. The meter is linear so the fraction or percentage of time that the output is high....
-
Here is a simple frequency counter designed to monitor the 240VAC mains supply. It as a frequency range of 0-999Hz, so it could also be used with 400Hz equipment. Standard TTL/CMOS logic is employed for the counters and display drivers, while an ELM446 (IC1)....
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Relays have been around for a long time and though often now replaced with solid state switches, they have unique properties that make them more robust tha....
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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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Most models produced in the 30s rely on very similar circuits; in particular the RF section of most sets relies on the same LW-MW-SW scheme while the differences between different sets are based on the presence or absence of the variable selectivity control,....
-
The oscillator uses a fundamental quartz crystal, and the oscillation frequency can be up to 10MHz. Oscillator circuit is tuned to the resonant frequency. Capacitor C requires below 4.7pF, and it is connected to a follower to isolate the quartz crystal....
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Imagine devices that can disable and destroy microorganisms-viruses, bacteria and fungi - by means of a pulsed, intense, magnetic field! They are not devices for the distant future. They are for today! Already several different pulsed magnetic field....
-
This simple circuit mixes two or more channels into one channel (eg. stereo into mono). The circuit can mix as many or as few channels as you like and consumes very little power. The mixer is shown with two inputs, but you can add as many as you want by just....
-
Optimize the layout of the MAX16974/MAX16975/MAX16976 high-performance DC-DC converters, standard buck controllers designed for automotive applications....
-
-
High power IGBT modules employ hybrid IC gate drives including protection circuits that implement desaturation detection or real time control....
-
-
Manufacturers of cordless drills generally recommend a battery charging time of three hours. Once the charging time is up the battery must be disconnected from the charger: if you forget to do this there is a danger of overcharging the battery. This circuit,....
-
The sound produced imitates the rise and fall of an American police siren. When first switched on the 10u capacitors is discharged and both transistors are off. When the push button switch is pressed to 10u capacitor will charge via the 22k resistor. This....
-
-
Here is the circuit diagram of superb mini audio power amplifier, That can be power with 4. 5 volt dc to 18 volts dc (maximum). This amplifier is based on TDA1015, Product of NXP Semiconductors formerly PHILIPS Semiconductors. The TDA1015 is a monolithic....
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Rejection Ratio (CMRR) which enables rejection of high frequency common-mode voltage. This will result in the rejection of higher ambient levels of noise from utility lines, industrial equipment, and other radiating sources. The following circuit diagram....
-
The design is based on the TubeHobby and is the power supply used in their NC2. I built this very kit as my first nixie tube project, and you can find a review of this excellent kit in the reviews section of my blog. The circuit is a switch-mode power supply....
-
This circuit uses an 87C57 microcontroller and a few peripherals to condition X-10 power-line carrier-code formats from a personal computer to use an X-10 power-line interface in a home-control system. Software details are available in the reference.....
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The RF stage of the receiver is based on a transistor VT1, this stage works as a mixer and a local oscillator and it works as a synchronous detector. A cable of the headphones works as an antenna. A signal received with this antenna is fed to the input....
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-
DC to AC inverter is used to convert DC voltage source to an AC voltage source. DC AC inverter circuit works by switching the DC voltage source to make an....
-
In Broadband networking and high speed computing applications, multiple high current, low voltage power supplies are needed to power FPGAs Flash memory, DSPs and Microprocessors One such example calls for a maximum of 60A of current to power the CPU at 1. 5V....
-
A digitalmultimeter is a very useful instrument that combines several measurement functions in one unit. A typical multimeter includes features of a variable-range ohmmeter, voltmeter, and ammeter. Some of them also include capabilities of testing diodes and....
-
Butterworth filter is a filter whose freq response is flat over the passband region. British engineer Stephen Butterworth first described this ..
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Simulation of behavioral DSP designs along with analog/RF circuit designs is critical to the success of the integrated components, devices, and subsystems used in today`s wireless applications. The need to verify the impact of real-world analog/RF issues on....
-
The Metal-Oxide-Semiconductor Field-Effect Transistor, or MOSFET for short, is similar in many ways to the junction FET (JFET). Both are voltage-driven unipolar devices that depend on either electron or hole movement-but not both, as does the bipolar....
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As the only electronics engineer in my family and circle of friends, it is sometimes not possible to evade an appeal for help. This time the request came from a friendly elderly lady in a retirement home. In her room the light switch by the door and the pull....
-
This converter has a central component, the CMOS 4047, and converts a 12V DC voltage to 220V AC voltage. 4047 is utilised as a astable multivibrator. At pin 10 and 11 we find a rectangular symmetrically signal which is amplified by tow Darlington transistors....
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This is a single zone alarm - with automatic exit, entry and siren cut-off timers. It will accommodate all the usual types of normally-closed input devices - such as magnetic reed contacts, foil tape, PIRs etc. But it`s easy to add a normally-open trigger.....
-
Quadrature oscillator generate two sine-wave signal, but one signal is shifted 90 degree from the other signal. One output that lead the other called cosine...
-
-
Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in many fields. The circuit is based on a magnetic reed switch(S1) as the proximity sensor. A monostable multivibrator based on NE555 (IC1) and a toggle flip flop....
-
This be Pre Mic circuit or Microphone preamplifier circuit model 2 CH. By this circuit uses integrated number circuit NE5532 or LF353. It perform enlarge sound signal from Dynamic Micro phone give the power goes up for subsequently submit to go to still....
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Wow. System 7 thankyou so very much for your appreciative response to my Humble creation. My wife would not say i was gifted but Anal to the ooint....
-
Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they`re really...
-
The PCI Express [PCIe] bus defines the Electrical, topology and protocol for the physical layer of a point to point serial interface over copper wire or optical fiber. In addition to the Physical Layer, the PCI Express specification also covers the....
-
Then I learned to drive it. Turns out my greatest enemy is inertia. What I`ve built is just so damn heavy and massive I can`t just start off the motor at full speed. Being a half-assed physicist I should know that already. But I guess experience is also....
-
The circuit was meant to be powered by a power supply, which is why there is no transformer, rectifier, or filter capacitors on the schematic. There is no reason why you cannot add these. To use the circuit, hook it up to a power supply/plug it in. Then,....
-
The circuit is great for controlling the power delivered to a device such as a fan, LED`s or even transformers and coils. By adjusting the pulse width you can easily control the speed of a fan without sacrificing torque. This particular transistor, the....
-
-
The following circuit shows about Devantech SRF04 UltraSonic Sensor To The SV203 powered PPRK Circuit Diagram. This circuit based on the Devantech SRF04 sensor. Features: minimum of 10m sec to initiate the sonic pulse ( the trigger), fairly simple, held low....
-
A rear wiper/washer similar what every SUV on the road has. this kit has the motor mounting through the glass, which the end users cannot do since the glass is tempered. The truck cap manufacturers can have the glass drilled appropriately, before tempering.....
-
The diagrams of starting up of the TEP-60 diesel engines starter in chain of current accumulators: 1- baterry current without SCB, when traction generator operates in a starter mode; 2- baterry current with SCB, when traction generator operates in a starter....
-
circuit Infrared Intruder Alarm This the circuit warns the trespasser infrared system or Infrared Intruder Alarm circuit that interesting. By when there is a...
-
A project of a 555 tester circuit, the circuit will start blinking LEDs when power is applied which will indicate that the IC is working correctly....
-
The metal detector circuit is composed of the probe oscillator, reference oscillator, oscillation signal processor, mixing amplifier and ammeter PA and other components, and the circuit is shown as the chart. Probe oscillator is composed of the oscillating....
-
A static device that couples two circuits for the purpose of transferring alternating current (AC) from one circuit to another by electromagnetic induction. The current remains at the same frequency, but may change in voltage, phase, or impedance values. A....
-
Noise, in amplifier circuit, is generated intrinsically by each components inside the circuit. Resistor, capacitor, and semiconductor generate noises. By....
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The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up and amplified by the electret microphone is fed into the audio amplifier stage built around the first transistor. Output from the collector is fed into....
-
Here is a simple logic state indicator to test whether the output of digital IC is in logic 1 or 0. The Bicolor LED lights Green when the logic state is 1....
-
-
This time delay relay circuit is built with IC NE/SE555, produced by Intersil which contains a precision timer. Stability to temperature variations is 0.00...
-
The silicon controlled rectifier (S.C.R.) is called as the thyristor. It is like a diode, when the cathode is negative with respect to the anode, the current....
-
Commonly used 3-pin linear voltage regulators, for example the LM317, cannot handle input voltages in excess of about 30V. The LR8A from Supertex Inc is a new, adjustable three pin regulator that can accept input voltages up to 450V and can supply an output....
-
This project describes how to make a digital voltmeter using a PIC microcontroller. A HD44780 based character LCD is used to display the measured voltage. The PIC microcontroller used in this project is PIC16F688 that has 12 I/O pins out of which 8 can serve....
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This is a simple but reliable device based one of the oldest integrated voltage regulators of them all - the LM723....
-
This alarm is designed to sound its Siren only once. That is - when the alarm is activated - the Siren will sound for a preset length of time. Then it will switch off and remain off. The alarm will not re-activate. The basic alarm has a single zone with....
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A photodiode, SFH2030 as an infra red sensor. A MOSFET opamp, CA3140 is used in the differential mode to amplify the pulses of current from the photodiode. LED1 is an ordinary coloured led which will light when IR radiation is being received. The output of....
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This my fist project with SMD circuit. I ignored SMD because the small sized parts are confused me. The circuit of current SMD project is the headpho....
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Arduino Event-Driven Universal AV Remote May 1st, 2013 Turn Everything on with Airplay TL;DR - I wanted all of my AV components to turn on and ....
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Timing interval is initiated by applying power, and is determined by RT-CT. At end of interval, unijunction transistor triggers silicon controlled rectifier, to apply essentially full supply voltage to load. Delay range is from 0. 4millisec to 1 minute.....
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The term VCXO stands for Voltage Control Crystal Oscillator. The frequency of such an oscillator can be adjusted by a small amount through changing the control voltage. VCXO CLK generators have been used in various applications, such as digital T....
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This circuit runs a fast battery test without the need of power supply or expensive moving-coil voltmeters. It features two ranges: when SW1 is set as shown in the circuit diagram, the device can test 3V to 15V batteries. When SW1 is switched to the other....
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Tho TA8184P TA8184F is DC controlled dual volume, balance, Tone (8ass and treble) IC. it is suitable for car stereo, radio cassette, music center, TV multiplex sound Receiver end remote controlled ap....
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As we activate to adore those apathetic bleared canicule of summer, the best important affair on best of our minds is how to accumulate air-conditioned during those hot days. For some of us that agency axis up the old air conditioner and sipping on a nice....
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ISP Programmer Please buy USB programming cables at last and start using AVR Studio, avrdude etc. The source code is now abandonware and it will stay on Sourceforge for ages. This software supports programming of Atmel microcontrollers 89Sxx (`51), ATtiny,....
Scopeclock is an easy to use hardware to make your X-Y capable analog oscilloscope more useful. Using this simple to use hardware you can convert your analog oscilloscop..
The post explains a simple delay ON circuit which allows the connected load at the output to be switched ON with some predetermined delay after power switch ON. The explained circuit can be used for all applications which calls for an initial delay ON....
The CMX866 is a multi-standard modem for use in telephone based information and telemetry systems. Control of the device is via AT commands over a simple 9600b/s serial Interface compatible with most types of host Controller. An RS232 compatible Interface....
Make a USB to Serial Converter own with ATmega8 microcontroller. In this ATmega8 will be given free firmware source code and can be downloaded at the bottom. Because the ATmega8 there is no facility for communication with the USB, then inevitably the data....
To listen old vinyl LP`s in a correct sounding on a sassy with dynamic cartridge you need a circuit, named RIAA corrector. This circuit you can find in old amps, but it isn`t embedded in home cinema equipments or amplifiers can be obtained nowadays. Also, if....
This circuit takes advantage of the voltage drop across bridge rectifier diodes to produce a 5-position variable voltage supply to a DC fan or other small DC motor. It is not as efficient as a switch-mode circuit but it has the virtues of simplicity and no....
JFET Pierce oscillator will test any crystal from 50 kHz through 25-MHz upper frequency limit of fundamental-mode crystals without tuning, and drive counter for measuring crystal frequency, Will test overtone VHF crystals on their fundamental frequency. T1....
A simple proximity detector (sensor) circuit diagram and schematic is shown and how to make it using proximity detector IC CS2009A-used for metal detector applications....
This is the latest BH1417 FM Transmitter architecture from RHOM that includes a lot of appearance in one baby package. It comes with pre-emphasis, limiter so that the music can be transmitted at the aforementioned audio level, stereo encoder for stereo....
Openbench Logic Sniffer is an open source logic analyzer. It`s designed to support the SUMP logic analyzer software at the lowest possible cost. Download the source and design files from the Gadget Factory project page. This project started in the comments....
This circuit is essentially an amplified crystal set. The inductor could be a standard AM radio ferrite rod antenna while the tuning capacitor is a variab....
The wire speed DC motor is constantly receiving about 20 volts, regardless of the state of the switch on the nozzle handle. I checked the switch with an ohm meter. The switch works fine. I even disconnected the switch from the circuit board. The motor is....
The program in the microcontroller knows two protocols; the one wire bus used by the DS1820 temperature sensor, and the serial protocol expected by your computer. Once power is applied, the program fetches data from the sensors and sends it to the serial....
This is an amplified telephone line tap, which is designed to be minimally invasive. The interconnect to the phone line has a large input impedance, and is electrically isolated from the main electronics of the circuit. I designed this for use with a DTMF....
This circuit explain about alternate wireless switching using ultrasonic sensor. The distance of switching range should be more than 10 meters ....
No, wait.. the 15 KHz is the frequency that you use for drive the flyback transformer, is right, but the high voltage at the output is DC, cause....
A high efficiency simple 2-transistor VHF amplifier electronic circuit project can be designed using this electronic circuit diagram. This VHF amplifier electronic circuit has a very high efficiency of about 16dB gain, and requires no tuning or alignment....
The following circuit shows about Weller WLC100 Electronic Soldering Station Circuit Diagram. This circuit using the Q4012LPH Transistor. Features: for safety, temperature controlled, soldering station and works really well for most applications, simple....
The transistor is biased in class A. That`s mean the collector current flows all the time. This current can increase or decrease, caused by the input signal....
Use a relatively high-end microcontroller ( Piccolo TMS320F28035, 12-bit resolution, +/- 4LSB offset, +/- 60 LSB gain ) to measure voltage across stacked battery cells and control associated analog electronics to equalize their charge. The microcontroller....
The LTC ®4251B/LTC4251B-1/LTC4251B-2 negative voltage Hot Swap controllers allow a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current....
U1a is an oscillator and U1b the measurement part of the circuit. It converts unknown capacity into a pulse-width modulated signal the same way an automotive dwell meter works. The meter is linear so the fraction or percentage of time that the output is high....
Here is a simple frequency counter designed to monitor the 240VAC mains supply. It as a frequency range of 0-999Hz, so it could also be used with 400Hz equipment. Standard TTL/CMOS logic is employed for the counters and display drivers, while an ELM446 (IC1)....
Relays have been around for a long time and though often now replaced with solid state switches, they have unique properties that make them more robust tha....
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. ..
Most models produced in the 30s rely on very similar circuits; in particular the RF section of most sets relies on the same LW-MW-SW scheme while the differences between different sets are based on the presence or absence of the variable selectivity control,....
The oscillator uses a fundamental quartz crystal, and the oscillation frequency can be up to 10MHz. Oscillator circuit is tuned to the resonant frequency. Capacitor C requires below 4.7pF, and it is connected to a follower to isolate the quartz crystal....
Imagine devices that can disable and destroy microorganisms-viruses, bacteria and fungi - by means of a pulsed, intense, magnetic field! They are not devices for the distant future. They are for today! Already several different pulsed magnetic field....
This simple circuit mixes two or more channels into one channel (eg. stereo into mono). The circuit can mix as many or as few channels as you like and consumes very little power. The mixer is shown with two inputs, but you can add as many as you want by just....
Optimize the layout of the MAX16974/MAX16975/MAX16976 high-performance DC-DC converters, standard buck controllers designed for automotive applications....
High power IGBT modules employ hybrid IC gate drives including protection circuits that implement desaturation detection or real time control....
Manufacturers of cordless drills generally recommend a battery charging time of three hours. Once the charging time is up the battery must be disconnected from the charger: if you forget to do this there is a danger of overcharging the battery. This circuit,....
The sound produced imitates the rise and fall of an American police siren. When first switched on the 10u capacitors is discharged and both transistors are off. When the push button switch is pressed to 10u capacitor will charge via the 22k resistor. This....
Here is the circuit diagram of superb mini audio power amplifier, That can be power with 4. 5 volt dc to 18 volts dc (maximum). This amplifier is based on TDA1015, Product of NXP Semiconductors formerly PHILIPS Semiconductors. The TDA1015 is a monolithic....
Rejection Ratio (CMRR) which enables rejection of high frequency common-mode voltage. This will result in the rejection of higher ambient levels of noise from utility lines, industrial equipment, and other radiating sources. The following circuit diagram....
The design is based on the TubeHobby and is the power supply used in their NC2. I built this very kit as my first nixie tube project, and you can find a review of this excellent kit in the reviews section of my blog. The circuit is a switch-mode power supply....
This circuit uses an 87C57 microcontroller and a few peripherals to condition X-10 power-line carrier-code formats from a personal computer to use an X-10 power-line interface in a home-control system. Software details are available in the reference.....
The RF stage of the receiver is based on a transistor VT1, this stage works as a mixer and a local oscillator and it works as a synchronous detector. A cable of the headphones works as an antenna. A signal received with this antenna is fed to the input....
DC to AC inverter is used to convert DC voltage source to an AC voltage source. DC AC inverter circuit works by switching the DC voltage source to make an....
In Broadband networking and high speed computing applications, multiple high current, low voltage power supplies are needed to power FPGAs Flash memory, DSPs and Microprocessors One such example calls for a maximum of 60A of current to power the CPU at 1. 5V....
A digitalmultimeter is a very useful instrument that combines several measurement functions in one unit. A typical multimeter includes features of a variable-range ohmmeter, voltmeter, and ammeter. Some of them also include capabilities of testing diodes and....
Butterworth filter is a filter whose freq response is flat over the passband region. British engineer Stephen Butterworth first described this ..
Simulation of behavioral DSP designs along with analog/RF circuit designs is critical to the success of the integrated components, devices, and subsystems used in today`s wireless applications. The need to verify the impact of real-world analog/RF issues on....
The Metal-Oxide-Semiconductor Field-Effect Transistor, or MOSFET for short, is similar in many ways to the junction FET (JFET). Both are voltage-driven unipolar devices that depend on either electron or hole movement-but not both, as does the bipolar....
As the only electronics engineer in my family and circle of friends, it is sometimes not possible to evade an appeal for help. This time the request came from a friendly elderly lady in a retirement home. In her room the light switch by the door and the pull....
This converter has a central component, the CMOS 4047, and converts a 12V DC voltage to 220V AC voltage. 4047 is utilised as a astable multivibrator. At pin 10 and 11 we find a rectangular symmetrically signal which is amplified by tow Darlington transistors....
This is a single zone alarm - with automatic exit, entry and siren cut-off timers. It will accommodate all the usual types of normally-closed input devices - such as magnetic reed contacts, foil tape, PIRs etc. But it`s easy to add a normally-open trigger.....
Quadrature oscillator generate two sine-wave signal, but one signal is shifted 90 degree from the other signal. One output that lead the other called cosine...
Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in many fields. The circuit is based on a magnetic reed switch(S1) as the proximity sensor. A monostable multivibrator based on NE555 (IC1) and a toggle flip flop....%2B2%2BCH%2Bby%2BIC%2B%2BNE5532%2Bor%2BLF353.jpg "Pre MIC (microphone preamplifier) 2 CH by IC NE5532 or LF353")
This be Pre Mic circuit or Microphone preamplifier circuit model 2 CH. By this circuit uses integrated number circuit NE5532 or LF353. It perform enlarge sound signal from Dynamic Micro phone give the power goes up for subsequently submit to go to still....
Wow. System 7 thankyou so very much for your appreciative response to my Humble creation. My wife would not say i was gifted but Anal to the ooint....
Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they`re really...
The PCI Express [PCIe] bus defines the Electrical, topology and protocol for the physical layer of a point to point serial interface over copper wire or optical fiber. In addition to the Physical Layer, the PCI Express specification also covers the....
Then I learned to drive it. Turns out my greatest enemy is inertia. What I`ve built is just so damn heavy and massive I can`t just start off the motor at full speed. Being a half-assed physicist I should know that already. But I guess experience is also....
The circuit was meant to be powered by a power supply, which is why there is no transformer, rectifier, or filter capacitors on the schematic. There is no reason why you cannot add these. To use the circuit, hook it up to a power supply/plug it in. Then,....
The circuit is great for controlling the power delivered to a device such as a fan, LED`s or even transformers and coils. By adjusting the pulse width you can easily control the speed of a fan without sacrificing torque. This particular transistor, the....
The following circuit shows about Devantech SRF04 UltraSonic Sensor To The SV203 powered PPRK Circuit Diagram. This circuit based on the Devantech SRF04 sensor. Features: minimum of 10m sec to initiate the sonic pulse ( the trigger), fairly simple, held low....
A rear wiper/washer similar what every SUV on the road has. this kit has the motor mounting through the glass, which the end users cannot do since the glass is tempered. The truck cap manufacturers can have the glass drilled appropriately, before tempering.....
The diagrams of starting up of the TEP-60 diesel engines starter in chain of current accumulators: 1- baterry current without SCB, when traction generator operates in a starter mode; 2- baterry current with SCB, when traction generator operates in a starter....
circuit Infrared Intruder Alarm This the circuit warns the trespasser infrared system or Infrared Intruder Alarm circuit that interesting. By when there is a...
A project of a 555 tester circuit, the circuit will start blinking LEDs when power is applied which will indicate that the IC is working correctly....
The metal detector circuit is composed of the probe oscillator, reference oscillator, oscillation signal processor, mixing amplifier and ammeter PA and other components, and the circuit is shown as the chart. Probe oscillator is composed of the oscillating....
A static device that couples two circuits for the purpose of transferring alternating current (AC) from one circuit to another by electromagnetic induction. The current remains at the same frequency, but may change in voltage, phase, or impedance values. A....
Noise, in amplifier circuit, is generated intrinsically by each components inside the circuit. Resistor, capacitor, and semiconductor generate noises. By....
The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up and amplified by the electret microphone is fed into the audio amplifier stage built around the first transistor. Output from the collector is fed into....
Here is a simple logic state indicator to test whether the output of digital IC is in logic 1 or 0. The Bicolor LED lights Green when the logic state is 1....
This time delay relay circuit is built with IC NE/SE555, produced by Intersil which contains a precision timer. Stability to temperature variations is 0.00...
The silicon controlled rectifier (S.C.R.) is called as the thyristor. It is like a diode, when the cathode is negative with respect to the anode, the current....
Commonly used 3-pin linear voltage regulators, for example the LM317, cannot handle input voltages in excess of about 30V. The LR8A from Supertex Inc is a new, adjustable three pin regulator that can accept input voltages up to 450V and can supply an output....
This project describes how to make a digital voltmeter using a PIC microcontroller. A HD44780 based character LCD is used to display the measured voltage. The PIC microcontroller used in this project is PIC16F688 that has 12 I/O pins out of which 8 can serve....
This is a simple but reliable device based one of the oldest integrated voltage regulators of them all - the LM723....
This alarm is designed to sound its Siren only once. That is - when the alarm is activated - the Siren will sound for a preset length of time. Then it will switch off and remain off. The alarm will not re-activate. The basic alarm has a single zone with....
A photodiode, SFH2030 as an infra red sensor. A MOSFET opamp, CA3140 is used in the differential mode to amplify the pulses of current from the photodiode. LED1 is an ordinary coloured led which will light when IR radiation is being received. The output of....
This my fist project with SMD circuit. I ignored SMD because the small sized parts are confused me. The circuit of current SMD project is the headpho....
Arduino Event-Driven Universal AV Remote May 1st, 2013 Turn Everything on with Airplay TL;DR - I wanted all of my AV components to turn on and ....
Timing interval is initiated by applying power, and is determined by RT-CT. At end of interval, unijunction transistor triggers silicon controlled rectifier, to apply essentially full supply voltage to load. Delay range is from 0. 4millisec to 1 minute.....
The term VCXO stands for Voltage Control Crystal Oscillator. The frequency of such an oscillator can be adjusted by a small amount through changing the control voltage. VCXO CLK generators have been used in various applications, such as digital T....
This circuit runs a fast battery test without the need of power supply or expensive moving-coil voltmeters. It features two ranges: when SW1 is set as shown in the circuit diagram, the device can test 3V to 15V batteries. When SW1 is switched to the other....
Tho TA8184P TA8184F is DC controlled dual volume, balance, Tone (8ass and treble) IC. it is suitable for car stereo, radio cassette, music center, TV multiplex sound Receiver end remote controlled ap....
As we activate to adore those apathetic bleared canicule of summer, the best important affair on best of our minds is how to accumulate air-conditioned during those hot days. For some of us that agency axis up the old air conditioner and sipping on a nice....
ISP Programmer Please buy USB programming cables at last and start using AVR Studio, avrdude etc. The source code is now abandonware and it will stay on Sourceforge for ages. This software supports programming of Atmel microcontrollers 89Sxx (`51), ATtiny,....
