New Circuits Page 122
- Page 122
-
Collecting and storing experimental data is a common challenge for hobbyists. A popular approach is to use a device for converting analog data into digital data and storing the information on a computer. These devices are called A/D converters: an....
-
-
THE OP-AMP: The Op-Amp used for the signal meter circuit is a TL061. An LF351 works just as well, however and has the same pin layout. If you have a TL062 or similar the differing pin-outs are shown below so that you can design your circuit board....
-
In the NIXIE clocks that I have built, I did not want to have the big and ugly mains transformer in the actual clock itself. Instead I use an AC adapter that fits into the mains wall plug. This means that I have to use some sort of an up-converter to....
-
Receiver interference is hardly an unknown problem among model builders. Preventive measures in the form of ferrite beads fitted to servo cables are often seen in relatively large models and/or electrically driven models, to prevent the cables from acting as....
-
An analog output for my Arduino. The most common way to build a DAC is to use a R-2R ladder circuit. However, this DAC has no output buffer, which would make this circuit a bit more reliable and working with all kinds of loads. For the best results, you....
-
D1, D2, C1, and C2 double the AC line in, charging C3 through R1 to approximately 320 volts. R1 isolates the voltage doubler from the discharge capacitor C3 so that C1 and C2 do not participate in the flashtube discharge path. R2 and D3 form a 16-volt supply....
-
-
The balloon went to 103, 258 ft peak reported altitude. Many items had to be considered for launching payload to this range. Unlike building an electronics package to operate at Sea Level, items such as air pressure, temperature, relative humidity and even....
-
This article is the compilation of small transistor circuits and configurations for beginners like current amplifier and limiter, oscillator, latch etc. Using just a couple of NPN transistors a simple current amplifier circuit can be built. Two transistors....
-
-
-
When controlling motors with a microcontroller (like shown), the snubber is really pretty important. I haven`t seen this configuration, though, and typically the snubber is placed across the motor itself. The general idea is that there is charge that builds....
-
-
Using a dual polariity power supply (+-5V works fine) will cure most clipping problems. You will have to check the data sheet for the correct pins to connect your voltages. ..
-
MMC Programmer - Memory Card Unlocker, Portable Devices, Handhelds, palmtops, cellphones, PDAs, pocket organizers, and all those other devices that make computing part of your lifestyle ....
-
This counter can measure frequencies from 2 Hz to 1 MHz, time interval, and period, and count random events. A 74C926 and 74C925 are used as the counter, and these will drive a multiplexed LED display. A 2-MHz time base is used, and a divider chain is used....
-
It is fairly safe to say that most Bulle clocks will need their magnet rejuvenated before they will run properly from the normal single 1. 5V cell. The first "real" magnet material was cobalt-chrome steel, in 1921 [ 1 ]. Prior to that, carbon steel was....
-
This audio mixer circuit uses an LM3900 IC but is not a profesional audio dj mixer. The IC houses four integrated Norton amplifiers. The advantage of using the four op amps is that they only need a single power supply. Since this amplifier circuit is current....
-
Electronics Tutorial about Bistable Multivibrator also known as the Bistable Flip-Flop or Two-shot Multivibrator constructed from Transistors or Logic Gates....
-
-
The project Thor was started at the High Voltage Institute of HUT (Helsinki University of Technology) on January 1999. Dr. Martti Aro is in charge of project supervision and Marco Denicolai of project development and implementation. Within this project a....
-
If there is no light falling on the diode it will exert a high impedance(resistance). if light falls on the diode resistance of the diode willdecreased. (almost short circuit) in case of a black body or space(no objectin front of sensor) thenno light falls....
-
The Mk II was a second-generation version of the TG X 50. Both were dynamic microphones intended for bass instruments and kick drums. The primary difference between the two versions was the introduction of a passive EQ filter in the Mk II. Note that the....
-
A high voltage power supply for an electron beam system. The voltage regulator is an old analog system that works via a simple comparator and reference signal from a POT. My problem is the feedback voltage from the high voltage tank (tank meaning large steel....
-
-
This light sensitive automatic light switch circuit is intended to be connected at the main 220V supply. The circuit will connect a 220V lamp at the nightf....
-
The following article is a follow-up application note to `Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 1`. It details test conditions and setup recommendations to efficiently measure the dynamic performance parameters of high-spee....
-
Then iron the printed layout at minimum heat until the ink sticks to the PCB. It may take more than an hour to finish. Remove the transparent paper afterwards. 6) After that, submerge the PCB with Ferric Chloride Liquid until the expose copper is totally....
-
The 5 volt microcontroller interfaces to the RS-232 serial connector and the USB-B connector. It is also responsible for talking to the checker, controlling the status LED`s and setting the voltage for the LOW voltaage microcontroller. The low voltage....
-
The square wave is generated by a 7555 timer operating with a supply of 10V and thus generating exactly this voltage as output voltage. With the single quadrant multiplier (RC4200, Fairchild, obsolete) the two quadrant square root circuit is formed. 10V of....
-
LM12 operational amplifier can output currents up to 10A. The LM12 in encapsulated in TO-3 with 4 pins, can support up to 800W and has enough internal prot....
-
Here s a design of signals logic tester that is using indicate on a common cathode seven-segment display, if entry is at logic level ""1"" (one H on the display) or logic level (one L on the display). If an undefined level is detected will display ....
-
This automatic light dimmer circuit makes it possible to control a lighting system so that it turns on or off slowly. The circuit works this way: when switch S1 is closed, the capacitor C1 is slowly charged. Once the voltage at C1 reaches 0. 6, transistor T1....
-
The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achievement with adjustable accretion are additionally provided...
-
As shown in the diagram, there are 10 same units that only differ in capacitance values of capacitors which determine the frequency band of each filter. The potentiometers adjust the predetermined regions of frequency in each unit. If it is intended for....
-
The laser-pointer detection circuitry is able to determine when a laser light is aimed at a particular photosensor. If the laser is aimed at the top sensor, the comparator chip outputs on . If the laser is aimed at the bottom sensor, the comparator chip....
-
-
Here`s a simple 433.92 MHz short range radio beacon that may be handy for locating downed R/C planes, lost ballons, model rockets - or perhaps hidden....
-
Hey guys, need some help with a project. Im pretty good with 12v electrical wiring but am having trouble figuring this out. Im building a switch panel ....
-
My CM7777 preamp has failed. I want to determine if the failure is due to the power supply or the preamp itself. Does the power supply output a DC voltage on the ....
-
1993 Jeep Grand Cherokee Horn System Wiring Diagram...
-
A dimmer is quite unusual in a caravan or on a boat. Here we describe how you can make one. So if you would like to be able to adjust the mood when you re entertaining friends and acquaintances, then this circuit enables you to do so. Designing a dimmer for....
-
The PhoneAxe is an original design by the author of a passive filter network built into a 1/4" phone plug/coaxial cable, and is designed to allow electric-guitar matching to the magnetic-phonograph input on common hi-fi amplifiers. Most guitar amplifiers....
-
The device emits ultrasonic sound waves that sweep between 65, 000 and 25, 000 hertz. Designed around a 556 dual timer, one half operated as an astable nultivibrator with an adjustable frequency of 1 to 3 Hz. The second half is also operated as an astable....
-
-
Based on CD4017 and logic gates this electronic circuit switches on a relay if you press four keys in the correct sequence, and backs to the start conditio....
-
Here they exist two regulator circuits, that use the IC L200, as regulator of voltage and current, the company SGS-Thomson, which give these circuits. In circuit Fig.1, we can regulate the output voltage, with the RV1, while in the Fig.2, we can regulate....
-
The circuit is based on the PIC 16F877 microcontroller, see schematic in figure 4. The digital display output of the speech recognition circuit connects directly to the pins of the microcontroller. The LED in, provides a trigger that informs the....
-
This instructable is a guide for setting up an automated gardening system using an arduino and other cheap electronic parts. It allows sustainable gardeningby using sensors to determinesoil moisture, as well as a webscraper to determinefuture weather. It....
-
-
-
This circuit places a maximum limit on the current available from the output terminals. It does this by limiting the maximum current that can flow through Q1. Because the output terminals are in series with Q1 - limiting the Q1 current also limits the output....
-
The oscillator based on IC2 is responsible for producing the sound. Its output is connected to the base of TR1, which amplifies it to drive the speaker. Resistor R4 is included in the circuit to limit the current through TR1 to a safe and reasonable level.....
-
-
Measuring range: room temperature is -10 ~ 40 ?; body temperature is 36 ~ 41 ?; Resolution: room temperature is 0.5 ?, body temperature is 0.05 ?; error: room temperature <1 ?, body temperature <0.1 ?. When S1 is in position 1, it shows the room temperature....
-
-
This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. Interfere with the hearing of insects. Make it insufferable, wings to escape in the end. Operation of this circuit is used IC1 number....
-
-
This 3 channel 15 LED spectrum analyzer is the perfect addition to any audio amp project. It produces fantastic displays on three LED bars that can be individually adjusted for any particular frequency range. The circuit will take line level output from most....
-
This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information. The 10KHz center frequency of the pulse stream is low enough so a standard....
-
This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signal produced by oscillator N3/N4. At the touch sensor hand capacity forms a bridge to the ground for....
-
The following circuit shows about Simple Stepper Motor Controller Circuit Diagram. This circuit Based On The 7404 IC. Features: suitable heat ....
-
This project details the design of a very low dropout adjustable power supply. A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful....
-
Voltage regulator is connected across solar-cell away as shown to prevent damage to storage battery by overcharging. Series diode prevents array from discharging battery during hours of darkness. Regulator does not draw power from battery, except for very....
-
This is a DC to AC inverter using 555 timer and a transformer that is 9-0-9V/230V and rated at 36VA. Component: 555 IC, TIP42C and TIP41C ....
-
The objective of this controller project is to have automatic block and switch control of five separate engines that run on two completely independent loops of track. Part of each loop is outside (public) and part is inside (hidden from public view). The....
-
Here is the circuit of a fluid level indicator which shows each level in meaningful English letters. The circuit presented here using seven segment display to display the letter E for empty, L for low, H for half, A for above average, and F for full tank.....
-
The single-junction transistor is always used in the sawtooth generator and pulse generator, and it also can form the simple sine wave generation circuit. As an oscillator circuit of the discrete component, it uses fewest components. As the figure shown,....
-
Analog to Digital Converter ADC interfacing with microcontrollers AVR 8051 PIC, Digital-Ramp ADC, Successive approximation ADC, Flash ADC and basic working of an anlalog to digital converter....
-
The following circuit shows about Infrared Motion Sensorcircuit diagram. Features: With NE555 IC, The detection zone coverage is 80 degrees ....
-
This circuit seems interesting and I wanted to simulate and construct it, but the problem is I do not know what do the 3 symbols in the circuit represent (1 in audio input, 1 in the middle, and 1 at the antenna). I have never come across with these symbols....
-
-
Neon lamp or tube lamp need high voltage to trigger the ionization of the gas inside the tube. After the ionization occurs, the voltage drops around 40 volts....
-
-
-
We are doing sms based home appliance control system.We used ATtiny2313 micro controller.We are having problem programming the micro controller. Is there ....
-
The following circuit shows about LM555 IC Motion Detectors with Infrared Sensors. Features: produces an infrared pulse modulation 5KHz, Bandwidth control also ....
-
-
A very useful project of a 12V LED Lamp circuit. This led circuit is very simple consist of 5 resistors and 15 super bright white 5mm LEDs which are easily available now a days on very cheap prices. You can use any type of 12 volt battery with this circuit.....
-
Variable Gain Amplifier controlled by voltage, works as video amplifier. It use 3 Field Effect Transistor (FET) type U1897E. U1897E can be replaced with 2N4091..
-
The following circuit shows about? LM358 IC Solar Controller Circuit Diagram. Features: also as a mobile communications base stations, convert ...
-
A very simple DIY Class-A MOSFET Amplifier Project that uses only a one Hitachi 2SK1058 N-Channel MOSFET in a single-ended circuit..
-
The core of this project (play a sound when a sensor is activated) is applicable to all sorts of areas (Halloween, art installations, scaring your little brother, Burning Man, etc. ), so read this with an eye to applications you`d like to see. My first....
-
-
This heat detector alarm electronic project is designed using the UM3561 sound generator circuit and some other common electronic parts. This heat detector circuit project uses a complementary pair comprising npn and pnp transistor to detect heat. When the....
-
Mullard TCA240 dual balanced modulator-demodulator provides suppression of carrier frequency at output, as required for SSB or DSB operation of transmitter. Bias resistor R7 is adjusted for minimum carrier output to correct imbalance. Can be used as....
-
The Maya used several calendars simultaneously. One of them called the "long count", is a continuous record of days from a zero date that correlates to Aug. 13, 3114 BC, and is more According to maya`s celender when the both the wheel of the maya celender....
-
Here is the circuit diagram of a simple 24W mono amplifier using IC TDA1516. The TDA1516 is an integrated class B power amplifier in a 13 pin SIL package. The IC has many useful features such as short circuit protection, load dump protection, thermal....
-
Is capable of driving 3. w servo motor in ambient of -55 to 125ƒ, if capacitors for 125ƒ are used. Gain can be adjusted over range of 20, 000 to 80, 000 amp per amp by adjusting RF in driver circuit. Gain varies less thon 10% over operating temperature....
-
This digital volume control has no pot to wear out and introduces almost no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN. A digital potentiometer is a digitally-controlled electronic component that mimics the analog....
-
The AAT1265 evaluation board provides a platform for the testing and evaluation of the AAT1265 low voltage 2MHz Step-up Regulator The evaluation board demonstrates suggested size and placement of external components to main- tain output voltage regulation....
-
-
Photovoltaic (PV) is the field of technology and research related to the application of solar cells for energy by converting sunlight directly into electricity. The following Photovoltaic Power System manual is a suggested practices manual examines the....
-
-
This is the 6A schematic that was in the bottom of the unit. It is incorrect. These units have been banging around for over 40 years. Many bottoms have been switched around, due to battery corrosion in the lower case. My Geiger Counter is a 6B, and the....
-
The Multi function frequency meter is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures....
-
The CXA1821M is an IC developed for compact disc players. This IC incorporates an APC circuit and RF, focus error, and tracking error Amplifiers for 3- spot optical pickup output. (The voltage-converted optical pickup output is supported. ) By Sony....
-
AC mains operated single LED flasher circuit, built using the popular CMOS timer chip TLC555 is shown below. The whole circuit is powered directly by the grid supply of 230VAC through a capacitive potential divider and associated components. This minuscule....
-
CGA to SCART adapter has great advantages as it does not require separate power source and that uses very few external components, which can be easily adapted in the SCART connector. The signals from R, G and B pins of the CGA`s board are converted from TTL....
-
Hi! I want to DIY a 300BSE power amplifier recently, could somebody recomend or provide me a wonderful and robust schematic??? I will use Lowther PM6....
-
This circuit is designed as a pocket sized high performance audio oscillator. This circuit can operated using battery operated version was possible and could be made at very low cost as well by using one quad op-amp to provide the entire active circuitry.....
-
The circuit is a broad band amplifier which will take the video signals from your VCR and will amplify them sufficiently to drive up to 3 monitors, TV sets (provided that they can accept direct video signals), or other VCR ½s for recording from one video to....
Collecting and storing experimental data is a common challenge for hobbyists. A popular approach is to use a device for converting analog data into digital data and storing the information on a computer. These devices are called A/D converters: an....
THE OP-AMP: The Op-Amp used for the signal meter circuit is a TL061. An LF351 works just as well, however and has the same pin layout. If you have a TL062 or similar the differing pin-outs are shown below so that you can design your circuit board....
In the NIXIE clocks that I have built, I did not want to have the big and ugly mains transformer in the actual clock itself. Instead I use an AC adapter that fits into the mains wall plug. This means that I have to use some sort of an up-converter to....
Receiver interference is hardly an unknown problem among model builders. Preventive measures in the form of ferrite beads fitted to servo cables are often seen in relatively large models and/or electrically driven models, to prevent the cables from acting as....
An analog output for my Arduino. The most common way to build a DAC is to use a R-2R ladder circuit. However, this DAC has no output buffer, which would make this circuit a bit more reliable and working with all kinds of loads. For the best results, you....
D1, D2, C1, and C2 double the AC line in, charging C3 through R1 to approximately 320 volts. R1 isolates the voltage doubler from the discharge capacitor C3 so that C1 and C2 do not participate in the flashtube discharge path. R2 and D3 form a 16-volt supply....
The balloon went to 103, 258 ft peak reported altitude. Many items had to be considered for launching payload to this range. Unlike building an electronics package to operate at Sea Level, items such as air pressure, temperature, relative humidity and even....
This article is the compilation of small transistor circuits and configurations for beginners like current amplifier and limiter, oscillator, latch etc. Using just a couple of NPN transistors a simple current amplifier circuit can be built. Two transistors....
When controlling motors with a microcontroller (like shown), the snubber is really pretty important. I haven`t seen this configuration, though, and typically the snubber is placed across the motor itself. The general idea is that there is charge that builds....
Using a dual polariity power supply (+-5V works fine) will cure most clipping problems. You will have to check the data sheet for the correct pins to connect your voltages. ..
MMC Programmer - Memory Card Unlocker, Portable Devices, Handhelds, palmtops, cellphones, PDAs, pocket organizers, and all those other devices that make computing part of your lifestyle ....
This counter can measure frequencies from 2 Hz to 1 MHz, time interval, and period, and count random events. A 74C926 and 74C925 are used as the counter, and these will drive a multiplexed LED display. A 2-MHz time base is used, and a divider chain is used....
It is fairly safe to say that most Bulle clocks will need their magnet rejuvenated before they will run properly from the normal single 1. 5V cell. The first "real" magnet material was cobalt-chrome steel, in 1921 [ 1 ]. Prior to that, carbon steel was....
This audio mixer circuit uses an LM3900 IC but is not a profesional audio dj mixer. The IC houses four integrated Norton amplifiers. The advantage of using the four op amps is that they only need a single power supply. Since this amplifier circuit is current....
Electronics Tutorial about Bistable Multivibrator also known as the Bistable Flip-Flop or Two-shot Multivibrator constructed from Transistors or Logic Gates....
The project Thor was started at the High Voltage Institute of HUT (Helsinki University of Technology) on January 1999. Dr. Martti Aro is in charge of project supervision and Marco Denicolai of project development and implementation. Within this project a....
If there is no light falling on the diode it will exert a high impedance(resistance). if light falls on the diode resistance of the diode willdecreased. (almost short circuit) in case of a black body or space(no objectin front of sensor) thenno light falls....
The Mk II was a second-generation version of the TG X 50. Both were dynamic microphones intended for bass instruments and kick drums. The primary difference between the two versions was the introduction of a passive EQ filter in the Mk II. Note that the....
A high voltage power supply for an electron beam system. The voltage regulator is an old analog system that works via a simple comparator and reference signal from a POT. My problem is the feedback voltage from the high voltage tank (tank meaning large steel....
This light sensitive automatic light switch circuit is intended to be connected at the main 220V supply. The circuit will connect a 220V lamp at the nightf....
The following article is a follow-up application note to `Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 1`. It details test conditions and setup recommendations to efficiently measure the dynamic performance parameters of high-spee....
Then iron the printed layout at minimum heat until the ink sticks to the PCB. It may take more than an hour to finish. Remove the transparent paper afterwards. 6) After that, submerge the PCB with Ferric Chloride Liquid until the expose copper is totally....
The 5 volt microcontroller interfaces to the RS-232 serial connector and the USB-B connector. It is also responsible for talking to the checker, controlling the status LED`s and setting the voltage for the LOW voltaage microcontroller. The low voltage....
The square wave is generated by a 7555 timer operating with a supply of 10V and thus generating exactly this voltage as output voltage. With the single quadrant multiplier (RC4200, Fairchild, obsolete) the two quadrant square root circuit is formed. 10V of....
LM12 operational amplifier can output currents up to 10A. The LM12 in encapsulated in TO-3 with 4 pins, can support up to 800W and has enough internal prot....
Here s a design of signals logic tester that is using indicate on a common cathode seven-segment display, if entry is at logic level ""1"" (one H on the display) or logic level (one L on the display). If an undefined level is detected will display ....
This automatic light dimmer circuit makes it possible to control a lighting system so that it turns on or off slowly. The circuit works this way: when switch S1 is closed, the capacitor C1 is slowly charged. Once the voltage at C1 reaches 0. 6, transistor T1....
The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achievement with adjustable accretion are additionally provided...
As shown in the diagram, there are 10 same units that only differ in capacitance values of capacitors which determine the frequency band of each filter. The potentiometers adjust the predetermined regions of frequency in each unit. If it is intended for....
The laser-pointer detection circuitry is able to determine when a laser light is aimed at a particular photosensor. If the laser is aimed at the top sensor, the comparator chip outputs on . If the laser is aimed at the bottom sensor, the comparator chip....
Here`s a simple 433.92 MHz short range radio beacon that may be handy for locating downed R/C planes, lost ballons, model rockets - or perhaps hidden....
Hey guys, need some help with a project. Im pretty good with 12v electrical wiring but am having trouble figuring this out. Im building a switch panel ....
My CM7777 preamp has failed. I want to determine if the failure is due to the power supply or the preamp itself. Does the power supply output a DC voltage on the ....
1993 Jeep Grand Cherokee Horn System Wiring Diagram...
A dimmer is quite unusual in a caravan or on a boat. Here we describe how you can make one. So if you would like to be able to adjust the mood when you re entertaining friends and acquaintances, then this circuit enables you to do so. Designing a dimmer for....
The PhoneAxe is an original design by the author of a passive filter network built into a 1/4" phone plug/coaxial cable, and is designed to allow electric-guitar matching to the magnetic-phonograph input on common hi-fi amplifiers. Most guitar amplifiers....
The device emits ultrasonic sound waves that sweep between 65, 000 and 25, 000 hertz. Designed around a 556 dual timer, one half operated as an astable nultivibrator with an adjustable frequency of 1 to 3 Hz. The second half is also operated as an astable....
Based on CD4017 and logic gates this electronic circuit switches on a relay if you press four keys in the correct sequence, and backs to the start conditio....
Here they exist two regulator circuits, that use the IC L200, as regulator of voltage and current, the company SGS-Thomson, which give these circuits. In circuit Fig.1, we can regulate the output voltage, with the RV1, while in the Fig.2, we can regulate....
The circuit is based on the PIC 16F877 microcontroller, see schematic in figure 4. The digital display output of the speech recognition circuit connects directly to the pins of the microcontroller. The LED in, provides a trigger that informs the....
This instructable is a guide for setting up an automated gardening system using an arduino and other cheap electronic parts. It allows sustainable gardeningby using sensors to determinesoil moisture, as well as a webscraper to determinefuture weather. It....
This circuit places a maximum limit on the current available from the output terminals. It does this by limiting the maximum current that can flow through Q1. Because the output terminals are in series with Q1 - limiting the Q1 current also limits the output....
The oscillator based on IC2 is responsible for producing the sound. Its output is connected to the base of TR1, which amplifies it to drive the speaker. Resistor R4 is included in the circuit to limit the current through TR1 to a safe and reasonable level.....
Measuring range: room temperature is -10 ~ 40 ?; body temperature is 36 ~ 41 ?; Resolution: room temperature is 0.5 ?, body temperature is 0.05 ?; error: room temperature <1 ?, body temperature <0.1 ?. When S1 is in position 1, it shows the room temperature....
This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. Interfere with the hearing of insects. Make it insufferable, wings to escape in the end. Operation of this circuit is used IC1 number....
This 3 channel 15 LED spectrum analyzer is the perfect addition to any audio amp project. It produces fantastic displays on three LED bars that can be individually adjusted for any particular frequency range. The circuit will take line level output from most....
This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information. The 10KHz center frequency of the pulse stream is low enough so a standard....
This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signal produced by oscillator N3/N4. At the touch sensor hand capacity forms a bridge to the ground for....
The following circuit shows about Simple Stepper Motor Controller Circuit Diagram. This circuit Based On The 7404 IC. Features: suitable heat ....
This project details the design of a very low dropout adjustable power supply. A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful....
Voltage regulator is connected across solar-cell away as shown to prevent damage to storage battery by overcharging. Series diode prevents array from discharging battery during hours of darkness. Regulator does not draw power from battery, except for very....
This is a DC to AC inverter using 555 timer and a transformer that is 9-0-9V/230V and rated at 36VA. Component: 555 IC, TIP42C and TIP41C ....
The objective of this controller project is to have automatic block and switch control of five separate engines that run on two completely independent loops of track. Part of each loop is outside (public) and part is inside (hidden from public view). The....
Here is the circuit of a fluid level indicator which shows each level in meaningful English letters. The circuit presented here using seven segment display to display the letter E for empty, L for low, H for half, A for above average, and F for full tank.....
The single-junction transistor is always used in the sawtooth generator and pulse generator, and it also can form the simple sine wave generation circuit. As an oscillator circuit of the discrete component, it uses fewest components. As the figure shown,....
Analog to Digital Converter ADC interfacing with microcontrollers AVR 8051 PIC, Digital-Ramp ADC, Successive approximation ADC, Flash ADC and basic working of an anlalog to digital converter....
The following circuit shows about Infrared Motion Sensorcircuit diagram. Features: With NE555 IC, The detection zone coverage is 80 degrees ....
This circuit seems interesting and I wanted to simulate and construct it, but the problem is I do not know what do the 3 symbols in the circuit represent (1 in audio input, 1 in the middle, and 1 at the antenna). I have never come across with these symbols....
Neon lamp or tube lamp need high voltage to trigger the ionization of the gas inside the tube. After the ionization occurs, the voltage drops around 40 volts....
We are doing sms based home appliance control system.We used ATtiny2313 micro controller.We are having problem programming the micro controller. Is there ....
The following circuit shows about LM555 IC Motion Detectors with Infrared Sensors. Features: produces an infrared pulse modulation 5KHz, Bandwidth control also ....
A very useful project of a 12V LED Lamp circuit. This led circuit is very simple consist of 5 resistors and 15 super bright white 5mm LEDs which are easily available now a days on very cheap prices. You can use any type of 12 volt battery with this circuit.....
Variable Gain Amplifier controlled by voltage, works as video amplifier. It use 3 Field Effect Transistor (FET) type U1897E. U1897E can be replaced with 2N4091..
The following circuit shows about? LM358 IC Solar Controller Circuit Diagram. Features: also as a mobile communications base stations, convert ...
A very simple DIY Class-A MOSFET Amplifier Project that uses only a one Hitachi 2SK1058 N-Channel MOSFET in a single-ended circuit..
The core of this project (play a sound when a sensor is activated) is applicable to all sorts of areas (Halloween, art installations, scaring your little brother, Burning Man, etc. ), so read this with an eye to applications you`d like to see. My first....
This heat detector alarm electronic project is designed using the UM3561 sound generator circuit and some other common electronic parts. This heat detector circuit project uses a complementary pair comprising npn and pnp transistor to detect heat. When the....
Mullard TCA240 dual balanced modulator-demodulator provides suppression of carrier frequency at output, as required for SSB or DSB operation of transmitter. Bias resistor R7 is adjusted for minimum carrier output to correct imbalance. Can be used as....
The Maya used several calendars simultaneously. One of them called the "long count", is a continuous record of days from a zero date that correlates to Aug. 13, 3114 BC, and is more According to maya`s celender when the both the wheel of the maya celender....
Here is the circuit diagram of a simple 24W mono amplifier using IC TDA1516. The TDA1516 is an integrated class B power amplifier in a 13 pin SIL package. The IC has many useful features such as short circuit protection, load dump protection, thermal....
Is capable of driving 3. w servo motor in ambient of -55 to 125ƒ, if capacitors for 125ƒ are used. Gain can be adjusted over range of 20, 000 to 80, 000 amp per amp by adjusting RF in driver circuit. Gain varies less thon 10% over operating temperature....
This digital volume control has no pot to wear out and introduces almost no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN. A digital potentiometer is a digitally-controlled electronic component that mimics the analog....
The AAT1265 evaluation board provides a platform for the testing and evaluation of the AAT1265 low voltage 2MHz Step-up Regulator The evaluation board demonstrates suggested size and placement of external components to main- tain output voltage regulation....
Photovoltaic (PV) is the field of technology and research related to the application of solar cells for energy by converting sunlight directly into electricity. The following Photovoltaic Power System manual is a suggested practices manual examines the....
This is the 6A schematic that was in the bottom of the unit. It is incorrect. These units have been banging around for over 40 years. Many bottoms have been switched around, due to battery corrosion in the lower case. My Geiger Counter is a 6B, and the....
The Multi function frequency meter is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures....
The CXA1821M is an IC developed for compact disc players. This IC incorporates an APC circuit and RF, focus error, and tracking error Amplifiers for 3- spot optical pickup output. (The voltage-converted optical pickup output is supported. ) By Sony....
AC mains operated single LED flasher circuit, built using the popular CMOS timer chip TLC555 is shown below. The whole circuit is powered directly by the grid supply of 230VAC through a capacitive potential divider and associated components. This minuscule....
CGA to SCART adapter has great advantages as it does not require separate power source and that uses very few external components, which can be easily adapted in the SCART connector. The signals from R, G and B pins of the CGA`s board are converted from TTL....
Hi! I want to DIY a 300BSE power amplifier recently, could somebody recomend or provide me a wonderful and robust schematic??? I will use Lowther PM6....
This circuit is designed as a pocket sized high performance audio oscillator. This circuit can operated using battery operated version was possible and could be made at very low cost as well by using one quad op-amp to provide the entire active circuitry.....
The circuit is a broad band amplifier which will take the video signals from your VCR and will amplify them sufficiently to drive up to 3 monitors, TV sets (provided that they can accept direct video signals), or other VCR ½s for recording from one video to....
