New Circuits Page 169
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This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit is work with based on the theory that insects like mosquito can be repelled by using sound frequencies in the ultrasonic (above 20KHz) range. This is the figure of the....
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If you need lots of Analog to Digital channels, or plenty of program space (up to 32K!), this one is for you! Prototype board for 40 pin PIC microcontrollers with power supply circuit, 20MHz crystal oscillator circuit, RS232 port, ICSP/ICD programming port...
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Transmitter: Pressing the SB will make the transmitter circuit work. D1, D2 and R2, R3, C4 constitute a low-frequency oscillator to control the audio oscillator composed of the D3, D4 and D5, D6, then it works alternately. The generated audio signal is added....
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This is single op-amp tone control circuit. This circuit is a hybrid low-pass, high pass and one-pole circuits with attenuation and gain. This circuit is the....
-
The basic current allows no carrier to be present in the output. By adding offsets to the carrier differential pairs, controlled amounts of carrier appear at the output. The amplitude becomes a function of the modulation signal-AM modulation. ..
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A timer circuit using IC 4060 is given here. The IC 4060 is a 14 stage binary counter with a built-in oscillator. R2, R7, C1 are the components that determine the frequency of the oscillator and the outputs will become high one after other and only one at a....
-
This is a schematic of a IR transmitter circuit using IC. The IC used in this circuit is a famous timer IC NE555 which is working as an astable multivibrator in this circuit and producing a 38KHz frequency signal. The circuit starts to produce the signal....
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-
-
Timing doorbell circuit with CW9300: As shown is Timing doorbell circuit diagram with CW9300. It has timing function, when we push the button,it will play musicforsome seconds, if we re-push the button immediately after loosing it, the doorbell will not ring....
-
Insulated-gate bipolar transistors (IGBTs) require full protection to avoid damage and failures resulting from conditions such as short circuits, overloads and overvoltages. The protection is key to ensuring safe and stable power-converter operations in....
-
This circuit is based around the PIC16LF1937 microcontroller. This chip is actually a small computer contained in a single chip, including RAM memory, EEPROM, I/O ports, CPU and so on. When you buy this chip, it comes empty with no program on it. You have to....
-
-
The Geiger counter is a scientific instrument that can detect ionising radiation such as alpha and beta particles and gamma rays. It`s capable of detecting a single particle and although relatively simple is thus exquisitely sensitive [1]. Radioactivity was....
-
Jim Williams had the unique ability to integrate his different talents in science, art, inventing and engineering and to bring forth easily understandable tutorials, app notes and tech phone conversations with customers that enabled better designs to emanate....
-
PDS is taken to address these shortcomings of standardized measures to achieve a uniform material, unified design, unified routing, unified installation and construction, make the structure clear and easy to centrally manage and maintain. So now the new....
-
-
-
Lead-Acid Battery Charger circuit diagram. The LM301A compares the voltage drop across R1 with an 18 mV reference set by R2. The comparator`s output controls the voltage regulator, forcing it to produce the lower float voltage when the battery-charging....
-
The The Circuit of DC Voltage Doubler was designed on arrived type Power Supply. Please study carefully and comprehend by the side of schematic design photos of The Circuit of DC Voltage Doubler to pick up factor in sequence. This is a economical DC Voltage....
-
Motor shields worked well - but they cost around $50 each, more than the Arduino itself. That`s fine for a single one, but I`m teaching an Arduino workshop (this Thursday!) for high school girls, and I needed something I could buy more cheaply so I could get....
-
Play this game alone or with your friends. The circuit comprises a timer IC, two decade counters and a display driver along with a 7-segment display. The game is simple. As stated above, it is a scoring game and the competitor who scores 100 points rapidly....
-
The portable batteries charger has been designed to provide an opportunity to load NiCd batteries even in the outdoors from a 12 V battery of a vehicle. Wh....
-
This article describes a 2 meter amplifier capable of running 25-30 watts output. More than 35 amplifiers have been procured at a cost of less than $50 each in these quantities. Photo A shows the final version of the circuit board; the completed amplifier is....
-
The buck-boost converter is of value where the output and/or input voltages vary to such an extent that on occasions a buck converter is needed, while on other occasions a boost converter is needed. An example (that will be described further in another....
-
Electronics Tutorial about Active High Pass Filter including its High Pass Filter Frequency Response, Op-amp Voltage Gain and Active Filter Construction....
-
Imagine you have a master controller device that control other devices in your house, and you don`t need to install any additional wires to facilitate the data...
-
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....
-
-
The 200 MHz JFET has same features below: 1. Low crossmodulation 2. Large-signal handling ability 3. No neutralization 4. AGC controlled by biasiing the upper....
-
This hack illustrates how a car can be controlled from anywhere in the world by tapping into the disgnostic systems and onboard webserver of the car. The objective is to keep the car live and connected to the Internet 24G—7 even when not being driven. It....
-
The power that is used for realignment is a loss as far as the rest of the circuit is concerned. Because of this hysteresis loss in the saturable-core reactor, the power gain is relatively low. A rectifier added to the load circuit will eliminate the....
-
Most homes today have at least a few infrared remote controls, whether they be for the television, the video recorder, the stereo, etc. Despite that fact, who among us has not cursed the light that remained lit after we just sat down in a comfortable chair....
-
Before Light-Emitting Diodes (LEDs) and Liquid Crystal Displays (LCDs) the electronic industry used cold-cathode tubes for displaying numbers, symbols and even characters. Even though they are called "tubes" they differ from "radio tubes" by having no heater....
-
-
This infrared repeater system is used to extend the range of an infrared transmitter used at an audio or video equipment at 10 m. The original signal is ca...
-
Many low pass filter circuits for subwoofer are given here and this is just another one. The circuit given here is based on the opamp TL062 from ST Micro electronics. TL062 is a dual high input impedance J-FET opamp which has very low power consumption and....
-
For relatively small (less number of pins than ATmega328) projects, ATtiny series, ATtiny45 or Attiny85 are good choice in terms of its physical size....
-
The thermocouple of the Model K is present industrial production, one kind of more common temperature sensors of scientific experiment, inner liquid steam of subject brightness range of Centigrade 0- 1 300 in various production for its all right direct....
-
In the circuit, NE555`s oscillation frequency is controlled by the VT2, and during its pin 3 in the low output waveform (output waveform of the T1 period), as VTI stops, VT2 is conduction with current Ic2 flowing, and the size is controlled by the output....
-
Sometimes you have a situation where you have a 5-V supply voltage but part of the circuit needs a lower supply voltage. A voltage regulator from the Texas Instruments TPS62000 family [1] is a good choice for this if the current consumption is less than 600....
-
This metal detector electronic project schematic circuit is designed using a simple 555 timer integrated circuit. As you can see in the schematic circuit, this metal detector electronic project requires few external electronic parts...
-
This handy prescaler divides input frequency by 1000. It takes maximum input frequency of 3. 5GHz and converts it into 3. 5MHz that may be measured using standard frequency meter...
-
When the door is opened, SW1 closes, the circuit is powered and the lamp is on. C1 starts charging slowly through R1 and when a voltage of 2/3 the supply is reached at pins #2 and #6 of IC1, the internal comparator changes the state of the flip-flop, the....
-
This document is written in attempt to include everyone interested in serious construction of a quality product. Its very technical, however, written openly and honestly. It`s designed for Amateur Radio (not commercial) at no cost to obtain and is open for....
-
This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few centimeters from the cellular phone, so its sensor coil L1....
-
This circuit is a toy to encourage young children to count. Power is turned on by switch S1, then S2 is closed. This makes nine LEDs flash slowly. S2 is then opened and the LEDs go out. Pressing pushbutton PB1 turns on a random number of LEDs - briefly -....
-
Here the circuit diagram of electronic siren based NE555. This circuit produces a sound like factory siren. It applies a 555 timer IC which is utilized as an astable multivibrator of a center frequency of about 300Hz. The frequency is controlled by the pin 5....
-
Sawtooth wave oscillator is used in cathode ray tube deflection circuitry, in a PWM modulator, or in a analog to digital conversion. You can also use it in your...
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-
-
-
On this diagram, you can easilily locate test points related to Applied Voltage and Potential Voltage. For example, isolating one of the heating elements, we can see that there is an N. O. (Normally Open) switch shown wired in series with it, and the....
-
Do not let its extreme simplicity deceive you — this thing is useful! I have made many over the years and have even given some away as gifts. Yes multimete....
-
This circuit can be built from readily available low-cost components, some of which may even be hiding in your junkbox! The indicated value of 22 for resistor R1 causes an average current of about 65 mA through infrared emitter D1. Because the IRED is....
-
-
This timer circuit can be used to switch OFF a particular device after around 35 minutes. The circuit can be used to switch OFF devices like radio, TV, fan, pump etc after a preset time of 35 minutes. Such a circuit can surely save a lot of power. The....
-
-
This circuit has a long and storied history - starting with an idea by Rich Piotter, then being honed and simplified by Wilf Rigter and Bruce Robinson. The final result does not show the necessary motor drivers (usually H-bridge based), but here`s the....
-
This a simple stereo electret microphone pre amplifier circuit. For maximum performance, use solid capacitors or film capacitors and metal film resistors. Here the simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple,....
-
-
This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few centimeters from the cellular phone, so its sensor coil L1....
-
The circuit as shown act as a light detector. Under normal conditions the resistance of the LDR is high, keeping pin 2 low. When light falls onto the LDR the resistance drops to a couple hundred ohms and triggers pin 2 high which biases the base of Q1 via....
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This device and all information contained on this website is for educational purposes only. This device must be used in conjunction with any and all local, provincial and federal laws. It is up to the end user to comply with all legal guidelines, thus we are....
-
This is a take-off on Mr. Marian s ""Simple Micro Ampere Meter Circuit"" that utilizes active circuitry and an analog meter to make sensitive DC current meas....
-
The best way to measure the current in a circuit is to place a sense resistor in the current path. The higher the resistance, the more exact the measurement will be. However, the drawback of a high resistance is that it affects the operation of the circuit....
-
Controlling room lighting using computer. I bought some triacs and opto couplers to do this. I drew the schematic and built a prototype. Everything worked well. We cannot see it on the pictures, but there is a cable going out of the box that plugs in the PC....
-
Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
-
-
Even if a large number of album titles once available on vinyl are now, little by little, being proposed as CDs, not all are available and far from it. You may have treasures in your collection that you would like to burn on CDs. First, preserving a CD is....
-
Cymbet Corporation offers rechargeable solid state batteries for advanced microcontroller power backup. We are a leader in thin film energy storage....
-
Here is the 22 watt stereo audio power amplifier circuit diagram based on TDA1554 and integrated circuit from NXP semiconductors (formerly PHILIPS semicon....
-
The following circuit shows about AD8531 IC For LCD Panel Backlight Automatic Control Circuit. Features: can compensate for aging effects and the ....
-
One problem this causes is that the lovely USB port that I have been using to communicate with hyperterminal will no longer be available. So I need an alternative. This lead me to the FT232RL chip. I picked this mainly because it is already in Eagle and....
-
Here`s a circuit diagram for a signal response test circuit from the spec sheet for a HA-5195 op amp and looks like a non-inverting amplifier circuit with a gain of 5, plus the 200 © resistor between Vout and ground:..
-
This battery-powered metal detector uses four exclusive-OR gates contained in the 4030 CMOS integrated circuit. The gates are wired as a twin-oscillators and a search coil serves as the inductance element in one of the oscillators. When the coil is brought....
-
This is the circuit diagram of Line Follower / Line Tracker robot. The circuit taken from the tutorial documentation. You may download the full tutorial at the end of this article. The line follower robot use 8 pieces of proximity sensor module. The sensor....
-
The circuit was designed to create a low cost frequency meter that will cover the range of 1 Hz to 1 MHz with a digital indication using three 7-segment d...
-
This amp had hum and nosise. So I added cpacitors at power supply, but Voltage was high. There was spark at final tube socket pins. So I pulled off capacitors...
-
Although it does not have the same charm as real mercury barometers with long glass tubes on pieces of carved and polished wood, the Torricelli barometer....
-
The bearing fault detector circuit is composed of the bearing detection sensor, signal processing circuit, transistor V, audio amplifier integrated circuit IC2, speaker BL and the RC element, and IC1, light-emitting diode VL, transistor are shown as the....
-
The simple circuit for converting an audio signal. The circuit basically consists of a buffer/amplifier stage and three filter circuits: a ....
-
Using a single op-amp this easy to make equalizer offers three ranges, low frequency, mid frequency, and high. With component values shown there is approximately +/-20dB of boost or cut at frequencies of 50Hz, 1kHz and 10kHz. Supply voltage may be anything....
-
The signal starts at a low frequency, rises for about 1. 15 seconds to a high frequency, ceases for about 0. 35 seconds, then starts rising again from a low frequency, and so on ad infinitum. ..
-
Edwin Henry Colpitts was a communications pioneer best known for his invention of the Colpitts oscillator. As research branch chief for Western Electric in the early 1900s, he and scientists under his direction achieved significant advances in the....
-
Originally Posted by grizli TUBE is not fork and does not resonate that way its probably longitudinal sound wave along tube metal .. and holding....
-
Superheterodyne receivers have been mass-produced since around 1924, but for reasons of cost did not become successful until the 1930s. Before the second world war other, simpler receiver technologies such as the TRF receiver and the regenerative receiver....
-
-
I`ve broken the schematic into three parts so it is easier to understand. The first schematic shows the audio out circuit. This project outputs audio....
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The following circuit shows about Simple Light Sensor Circuit Diagram. Features: Crocodile Technology for simulate circuits working, LDR is high ....
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Many battery powered devices use two AA alkaline cells. Often you will not know when it is time to replace the batteries until the device powered by them....
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Remote controls are part of an electronics device used for operating the device remotely. Remote control has continuously evolved and advanced over recent years. The technologies likebluetoothconnectivity, motion sensor enabled capabilities and voice control....
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This was my first AS Electronics project which I built way back in 1998! The original report, with diagrams, is shown here and a PDF version of the report is available for download. There are many occasions where I need to be able to measure small audio....
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The 555 adjustable timer circuit starts timing when switched on. The green LED lights to show that timing is in progress. When the time period is over the....
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An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. The sine wave or sinusoid is a....
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This voltage converter is built with TL497A and converts an input voltage of 5 12 voltage to a higher level of 15 30 volts. This is specially helpful i....
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A remote control car that can be driven over the internet or with a laptop wirelessly from up to 500m away. It has a live-feed network camera so that it can be driven without line of sight and a horn so that you can honk at people. A while ago I discovered....
This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit is work with based on the theory that insects like mosquito can be repelled by using sound frequencies in the ultrasonic (above 20KHz) range. This is the figure of the....
If you need lots of Analog to Digital channels, or plenty of program space (up to 32K!), this one is for you! Prototype board for 40 pin PIC microcontrollers with power supply circuit, 20MHz crystal oscillator circuit, RS232 port, ICSP/ICD programming port...
Transmitter: Pressing the SB will make the transmitter circuit work. D1, D2 and R2, R3, C4 constitute a low-frequency oscillator to control the audio oscillator composed of the D3, D4 and D5, D6, then it works alternately. The generated audio signal is added....
This is single op-amp tone control circuit. This circuit is a hybrid low-pass, high pass and one-pole circuits with attenuation and gain. This circuit is the....
The basic current allows no carrier to be present in the output. By adding offsets to the carrier differential pairs, controlled amounts of carrier appear at the output. The amplitude becomes a function of the modulation signal-AM modulation. ..
A timer circuit using IC 4060 is given here. The IC 4060 is a 14 stage binary counter with a built-in oscillator. R2, R7, C1 are the components that determine the frequency of the oscillator and the outputs will become high one after other and only one at a....
This is a schematic of a IR transmitter circuit using IC. The IC used in this circuit is a famous timer IC NE555 which is working as an astable multivibrator in this circuit and producing a 38KHz frequency signal. The circuit starts to produce the signal....
Timing doorbell circuit with CW9300: As shown is Timing doorbell circuit diagram with CW9300. It has timing function, when we push the button,it will play musicforsome seconds, if we re-push the button immediately after loosing it, the doorbell will not ring....
Insulated-gate bipolar transistors (IGBTs) require full protection to avoid damage and failures resulting from conditions such as short circuits, overloads and overvoltages. The protection is key to ensuring safe and stable power-converter operations in....
This circuit is based around the PIC16LF1937 microcontroller. This chip is actually a small computer contained in a single chip, including RAM memory, EEPROM, I/O ports, CPU and so on. When you buy this chip, it comes empty with no program on it. You have to....
The Geiger counter is a scientific instrument that can detect ionising radiation such as alpha and beta particles and gamma rays. It`s capable of detecting a single particle and although relatively simple is thus exquisitely sensitive [1]. Radioactivity was....
Jim Williams had the unique ability to integrate his different talents in science, art, inventing and engineering and to bring forth easily understandable tutorials, app notes and tech phone conversations with customers that enabled better designs to emanate....
PDS is taken to address these shortcomings of standardized measures to achieve a uniform material, unified design, unified routing, unified installation and construction, make the structure clear and easy to centrally manage and maintain. So now the new....
Lead-Acid Battery Charger circuit diagram. The LM301A compares the voltage drop across R1 with an 18 mV reference set by R2. The comparator`s output controls the voltage regulator, forcing it to produce the lower float voltage when the battery-charging....
The The Circuit of DC Voltage Doubler was designed on arrived type Power Supply. Please study carefully and comprehend by the side of schematic design photos of The Circuit of DC Voltage Doubler to pick up factor in sequence. This is a economical DC Voltage....
Motor shields worked well - but they cost around $50 each, more than the Arduino itself. That`s fine for a single one, but I`m teaching an Arduino workshop (this Thursday!) for high school girls, and I needed something I could buy more cheaply so I could get....
Play this game alone or with your friends. The circuit comprises a timer IC, two decade counters and a display driver along with a 7-segment display. The game is simple. As stated above, it is a scoring game and the competitor who scores 100 points rapidly....
The portable batteries charger has been designed to provide an opportunity to load NiCd batteries even in the outdoors from a 12 V battery of a vehicle. Wh....
This article describes a 2 meter amplifier capable of running 25-30 watts output. More than 35 amplifiers have been procured at a cost of less than $50 each in these quantities. Photo A shows the final version of the circuit board; the completed amplifier is....
The buck-boost converter is of value where the output and/or input voltages vary to such an extent that on occasions a buck converter is needed, while on other occasions a boost converter is needed. An example (that will be described further in another....
Electronics Tutorial about Active High Pass Filter including its High Pass Filter Frequency Response, Op-amp Voltage Gain and Active Filter Construction....
Imagine you have a master controller device that control other devices in your house, and you don`t need to install any additional wires to facilitate the data...
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....
The 200 MHz JFET has same features below: 1. Low crossmodulation 2. Large-signal handling ability 3. No neutralization 4. AGC controlled by biasiing the upper....
This hack illustrates how a car can be controlled from anywhere in the world by tapping into the disgnostic systems and onboard webserver of the car. The objective is to keep the car live and connected to the Internet 24G—7 even when not being driven. It....
The power that is used for realignment is a loss as far as the rest of the circuit is concerned. Because of this hysteresis loss in the saturable-core reactor, the power gain is relatively low. A rectifier added to the load circuit will eliminate the....
Most homes today have at least a few infrared remote controls, whether they be for the television, the video recorder, the stereo, etc. Despite that fact, who among us has not cursed the light that remained lit after we just sat down in a comfortable chair....
Before Light-Emitting Diodes (LEDs) and Liquid Crystal Displays (LCDs) the electronic industry used cold-cathode tubes for displaying numbers, symbols and even characters. Even though they are called "tubes" they differ from "radio tubes" by having no heater....
This infrared repeater system is used to extend the range of an infrared transmitter used at an audio or video equipment at 10 m. The original signal is ca...
Many low pass filter circuits for subwoofer are given here and this is just another one. The circuit given here is based on the opamp TL062 from ST Micro electronics. TL062 is a dual high input impedance J-FET opamp which has very low power consumption and....
For relatively small (less number of pins than ATmega328) projects, ATtiny series, ATtiny45 or Attiny85 are good choice in terms of its physical size....
The thermocouple of the Model K is present industrial production, one kind of more common temperature sensors of scientific experiment, inner liquid steam of subject brightness range of Centigrade 0- 1 300 in various production for its all right direct....
In the circuit, NE555`s oscillation frequency is controlled by the VT2, and during its pin 3 in the low output waveform (output waveform of the T1 period), as VTI stops, VT2 is conduction with current Ic2 flowing, and the size is controlled by the output....
Sometimes you have a situation where you have a 5-V supply voltage but part of the circuit needs a lower supply voltage. A voltage regulator from the Texas Instruments TPS62000 family [1] is a good choice for this if the current consumption is less than 600....
This metal detector electronic project schematic circuit is designed using a simple 555 timer integrated circuit. As you can see in the schematic circuit, this metal detector electronic project requires few external electronic parts...
This handy prescaler divides input frequency by 1000. It takes maximum input frequency of 3. 5GHz and converts it into 3. 5MHz that may be measured using standard frequency meter...
When the door is opened, SW1 closes, the circuit is powered and the lamp is on. C1 starts charging slowly through R1 and when a voltage of 2/3 the supply is reached at pins #2 and #6 of IC1, the internal comparator changes the state of the flip-flop, the....
This document is written in attempt to include everyone interested in serious construction of a quality product. Its very technical, however, written openly and honestly. It`s designed for Amateur Radio (not commercial) at no cost to obtain and is open for....
This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few centimeters from the cellular phone, so its sensor coil L1....
This circuit is a toy to encourage young children to count. Power is turned on by switch S1, then S2 is closed. This makes nine LEDs flash slowly. S2 is then opened and the LEDs go out. Pressing pushbutton PB1 turns on a random number of LEDs - briefly -....
Here the circuit diagram of electronic siren based NE555. This circuit produces a sound like factory siren. It applies a 555 timer IC which is utilized as an astable multivibrator of a center frequency of about 300Hz. The frequency is controlled by the pin 5....
Sawtooth wave oscillator is used in cathode ray tube deflection circuitry, in a PWM modulator, or in a analog to digital conversion. You can also use it in your...
On this diagram, you can easilily locate test points related to Applied Voltage and Potential Voltage. For example, isolating one of the heating elements, we can see that there is an N. O. (Normally Open) switch shown wired in series with it, and the....
Do not let its extreme simplicity deceive you — this thing is useful! I have made many over the years and have even given some away as gifts. Yes multimete....
This circuit can be built from readily available low-cost components, some of which may even be hiding in your junkbox! The indicated value of 22 for resistor R1 causes an average current of about 65 mA through infrared emitter D1. Because the IRED is....
This timer circuit can be used to switch OFF a particular device after around 35 minutes. The circuit can be used to switch OFF devices like radio, TV, fan, pump etc after a preset time of 35 minutes. Such a circuit can surely save a lot of power. The....
This circuit has a long and storied history - starting with an idea by Rich Piotter, then being honed and simplified by Wilf Rigter and Bruce Robinson. The final result does not show the necessary motor drivers (usually H-bridge based), but here`s the....
This a simple stereo electret microphone pre amplifier circuit. For maximum performance, use solid capacitors or film capacitors and metal film resistors. Here the simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple,....
This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few centimeters from the cellular phone, so its sensor coil L1....
The circuit as shown act as a light detector. Under normal conditions the resistance of the LDR is high, keeping pin 2 low. When light falls onto the LDR the resistance drops to a couple hundred ohms and triggers pin 2 high which biases the base of Q1 via....
This device and all information contained on this website is for educational purposes only. This device must be used in conjunction with any and all local, provincial and federal laws. It is up to the end user to comply with all legal guidelines, thus we are....
This is a take-off on Mr. Marian s ""Simple Micro Ampere Meter Circuit"" that utilizes active circuitry and an analog meter to make sensitive DC current meas....
The best way to measure the current in a circuit is to place a sense resistor in the current path. The higher the resistance, the more exact the measurement will be. However, the drawback of a high resistance is that it affects the operation of the circuit....
Controlling room lighting using computer. I bought some triacs and opto couplers to do this. I drew the schematic and built a prototype. Everything worked well. We cannot see it on the pictures, but there is a cable going out of the box that plugs in the PC....
Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
Even if a large number of album titles once available on vinyl are now, little by little, being proposed as CDs, not all are available and far from it. You may have treasures in your collection that you would like to burn on CDs. First, preserving a CD is....
Cymbet Corporation offers rechargeable solid state batteries for advanced microcontroller power backup. We are a leader in thin film energy storage....
Here is the 22 watt stereo audio power amplifier circuit diagram based on TDA1554 and integrated circuit from NXP semiconductors (formerly PHILIPS semicon....
The following circuit shows about AD8531 IC For LCD Panel Backlight Automatic Control Circuit. Features: can compensate for aging effects and the ....
One problem this causes is that the lovely USB port that I have been using to communicate with hyperterminal will no longer be available. So I need an alternative. This lead me to the FT232RL chip. I picked this mainly because it is already in Eagle and....
Here`s a circuit diagram for a signal response test circuit from the spec sheet for a HA-5195 op amp and looks like a non-inverting amplifier circuit with a gain of 5, plus the 200 © resistor between Vout and ground:..
This battery-powered metal detector uses four exclusive-OR gates contained in the 4030 CMOS integrated circuit. The gates are wired as a twin-oscillators and a search coil serves as the inductance element in one of the oscillators. When the coil is brought....
This is the circuit diagram of Line Follower / Line Tracker robot. The circuit taken from the tutorial documentation. You may download the full tutorial at the end of this article. The line follower robot use 8 pieces of proximity sensor module. The sensor....
The circuit was designed to create a low cost frequency meter that will cover the range of 1 Hz to 1 MHz with a digital indication using three 7-segment d...
This amp had hum and nosise. So I added cpacitors at power supply, but Voltage was high. There was spark at final tube socket pins. So I pulled off capacitors...
Although it does not have the same charm as real mercury barometers with long glass tubes on pieces of carved and polished wood, the Torricelli barometer....
The bearing fault detector circuit is composed of the bearing detection sensor, signal processing circuit, transistor V, audio amplifier integrated circuit IC2, speaker BL and the RC element, and IC1, light-emitting diode VL, transistor are shown as the....
The simple circuit for converting an audio signal. The circuit basically consists of a buffer/amplifier stage and three filter circuits: a ....
Using a single op-amp this easy to make equalizer offers three ranges, low frequency, mid frequency, and high. With component values shown there is approximately +/-20dB of boost or cut at frequencies of 50Hz, 1kHz and 10kHz. Supply voltage may be anything....
The signal starts at a low frequency, rises for about 1. 15 seconds to a high frequency, ceases for about 0. 35 seconds, then starts rising again from a low frequency, and so on ad infinitum. ..
Edwin Henry Colpitts was a communications pioneer best known for his invention of the Colpitts oscillator. As research branch chief for Western Electric in the early 1900s, he and scientists under his direction achieved significant advances in the....
Originally Posted by grizli TUBE is not fork and does not resonate that way its probably longitudinal sound wave along tube metal .. and holding....
Superheterodyne receivers have been mass-produced since around 1924, but for reasons of cost did not become successful until the 1930s. Before the second world war other, simpler receiver technologies such as the TRF receiver and the regenerative receiver....
I`ve broken the schematic into three parts so it is easier to understand. The first schematic shows the audio out circuit. This project outputs audio....
The following circuit shows about Simple Light Sensor Circuit Diagram. Features: Crocodile Technology for simulate circuits working, LDR is high ....
Many battery powered devices use two AA alkaline cells. Often you will not know when it is time to replace the batteries until the device powered by them....
Remote controls are part of an electronics device used for operating the device remotely. Remote control has continuously evolved and advanced over recent years. The technologies likebluetoothconnectivity, motion sensor enabled capabilities and voice control....
This was my first AS Electronics project which I built way back in 1998! The original report, with diagrams, is shown here and a PDF version of the report is available for download. There are many occasions where I need to be able to measure small audio....
The 555 adjustable timer circuit starts timing when switched on. The green LED lights to show that timing is in progress. When the time period is over the....
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. The sine wave or sinusoid is a....
This voltage converter is built with TL497A and converts an input voltage of 5 12 voltage to a higher level of 15 30 volts. This is specially helpful i....
A remote control car that can be driven over the internet or with a laptop wirelessly from up to 500m away. It has a live-feed network camera so that it can be driven without line of sight and a horn so that you can honk at people. A while ago I discovered....
