New Circuits Page 55
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VTTC (Vacuum tube tesla coil) is a Tesla coil with vacuum tubes as a switch. I used self-oscillating circuit with two russian (soviet) tubes GU-81M connected in parallel. The source of high voltage are two MOTs (Microwave oven transformers) connected in....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The 1K resistors in the circuit are capital so that the LED`s about-face on at altered audio levels. There is no acumen why....
-
-
I finally completed a working AM transmitter. The transmitter`s design is based on several ideas, but mainly based on Phil`s Li`l 7 Transmitter design. It is not always easy to achieve oscillation in LC-based transmitters without the right combination of....
-
A switching voltage regulator circuit shown in the schematic diagram here can be a low cost solution for your high efficiency requirement electronic circuit....
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-
Connect the Negative side of the positive supply to the Positive side of the negative supply to create a +/-15vdc. This junction is the ground for the transducer to ensure a balanced voltage. 9) Continue the experiment by switching the power off, changing....
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-
This circuit is intended to provide good square waves converting a sine wave picked-up from an existing generator. Its major feature consists in the fact that no power-source is needed: thus it can be simply connected between a sine wave generator and the....
-
-
This circuit is intended for children fun, and is suitable to be installed on bicycles, battery powered cars and motorcycles, but also in models and other games. With SW1 positioned as shown in the circuit diagram it reproduces the typical dual tone sound of....
-
-
The elements diameter of the antenna may vary between 5. 8mm and the dipole diameter may vary between 8. 12mm (12mm recommended) without the need of changing anything to the length or spacing. All elements except the dipole are electrically connected to the....
-
-
-
Numitrons are neat display devices similar to Nixie tubes, but they were designed for low voltage use. Numitrons are basically incandescent displays, using filaments for the segments. Basically, a seven-segment readout consists of seven narrow illuminated....
-
-
The MAX6499 comprises undervoltage and overvoltage comparators for window detection. WHen the monitored voltage is within selected `window`, GATE is enhances....
-
The circuit is very simple and inexpensive. This is good thing because most commercial stepper motor controller ICs are quite expensive. This circuit is built from standard components and can easily be adapted to be controlled by a computer. If you use cheap....
-
Using a thermistor in the position shown makes a heat activated sensor. A change in temperature will alter the output of the opamp and energize the relay and light the LED. Swapping the position of the thermistor and 47k resistor makes a cold or frost alarm....
-
Here is a simple circuit using IC NE555 that can be used to generate metronomes. Such a circuit is very useful to those who learns music. The circuit is nothing but an astable multivibrator wired around NE555. The components R1, R2&C1 determines the output....
-
Here is another fun project for children as well as electronics beginners. We often hear the sound of grasshopper or cockroach (i. e. shrill sound) at night. The project published in this website Electronics grasshopper produced PI-PI sound (sound like....
-
Keyer dimmer table lamp adopts two touch buttons to adjust the light. The light changes weaken from strong when peopletouch one of the buttons, and it changes strong from weaken when peopletouch the other button. Working principle The principle of this....
-
Following last year`s rediscovery of radio controlled flight, I`ve recently become enamored with the hacking/mod potential of the downright bargain priced 9-channel FlySky FS-TH9X transmitter (also sold as Turnigy/Eurgle etc). The original 2. 4GHz RF module....
-
-
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....
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This circuit is a simple mixer circuit. It can mix two signal channels and one channel is output. Using a codec circuit, Convert stereo audio to mono audio time. -In circuit a FET number 2N3819 is main, it is better than a common transistors that a high....
-
Switching Regulator for High Power Efficiency When you should regulate a high voltage to a much lower voltage, switching regulator must be the only choice....
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-
-
The signal can be converted by piezoelectric films in many ways such as thermal to electrical (temperature sensor), mechanical to electrical (microphone), and...
-
a typical rf amplifier that is used in an AM radio receiver. In figure 2-19, the input circuit is the antenna of the radio (L1-a coil) which forms part of an LC circuit which is tuned to the desired station by variable capacitor C1. L1 is wound on the same....
-
A mobile phones microphone or mouthpiece is a component used to convert sound signal into an electrical signal. The earpiece speaker is the one that converts electrical signal into a sound signal, likewise also the IHF, buzzer or ringer speaker do. A typical....
-
-
There are plans to make it 1Gsps in the future, using interleaved ADCs and staggered clock, but that`s beyond me at the moment, so the first iteration will only have 100Msps (fastest from single ADC). The part I`m most unsure about is the analog front end,....
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-
Input current for a passive PFC circuit is insensitive to changes in the output ripple - so it requires a smaller inductance than previous circuits....
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Speaker relay delay controlling circuit for audio amplidier..
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This power supply is meant as an auxiliary or as a permanent power supply for all common circuits based on a stabilized DC voltage between 3 and 30V provided that the consumption does not exceed 3A. Of course this power supply unit can also be used for other....
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The 300W Amplifier circuit is shown it is a reasonably conventional design. Connections are provided for the Internal SIM, and filtering is provided for RF protection (R1, C2). The input is via a 4. 7uF bipolar cap, as this provides lots of capacitance in a....
-
The brain of the robot is made of Atmel Tiny2313 microcontroller. This MCU has a cool feature called In-System Programming which can be used to program memories of the MCU with almost-no-cost programmer. I used simple programmer which connects to parallel....
-
The Command Transmitter-Receiver (A3023) is intended to test the command receiver we propose for the ISL (Implantable Sensor with Lamp) in our Conceptual Design. The A3023 is a LWDAQ Device in two parts. The Command Transmitter section contains a 146-MHz....
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In this tutorial you will build a wailing siren that plays a tone that increases and decreases in pitch. The circuit uses two 555 ICs and a loudspeaker....
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Simple Electronic Multimeter High cost deters many hobbyists from buying a conventional multimeter. Since it is difficult to obtain cheap 50 uAor 100uA meters which are essential for a highly sensitive multimeter, an electronic alternative device is....
-
This circuit will trigger with any fluid with a resistance under 900K between the maximum separation distance of the probes. Let me explain further. The circuit uses a 4050B CMOS hex buffer working on a 5 volt supply. ..
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Here is a High efficiency Emergency Lamp using High bright White LEDs. It automatically turns on when power fails and turns off when power resumes ..
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-
-
This small FM transmitter with a range of about 50 meters designed for connection to the USB port. With lots of mini-transmitters then you have a comprehensive, action-packed radio program. Due to the power supply via the USB port of a high frequency....
-
Using TDA7262 integrated circuit manufactured by ST Microelectronics can be designed a very simple stereo audio amplifier electronic project which can provide a maximum output power of 20 watts per channel. TDA7262 is an ( class AB ) dual Hi-Fi Audio power....
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The 555 Ic is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, notice the diode) is constant and equal to 22Kohm (givin a frequency of about 1Khz, notice the hum). When the....
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Precision oscillator can be built using quartz crystal, but with proper component selection, you can also build one with RC (resistor and capacitor) circuit....
-
Reverse Engineering an EVAP System - Part 1 My friend/coworker has a 1997 Volkswagen Jetta (I4) that throws an EVAP SYSTEM Countless mechanics have attempted to diagnose it; none have ....
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This is yet another variation on the "parallel resistor" dummy load. [Go -here- for a discussion on dummy load theory]. This is another one I built during my infatuation with copper pipe. It`s suitable for QRP HF operation of 5-watts or less average power,....
-
-
How often does it happen that you close down Windows and then forget to turn off the computer This circuit does that automatically. After Windows is shut down there is a click` a second later and the PC is disconnected from the mains. Surprisingly enough,....
-
This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and come with a built-in filter, which is useful when the....
-
-
The dark detector circuit shown here can be used to produce an audible alarm when the light inside a room goes OFF. The circuit is build around timer IC N....
-
It is one of the most versatile general purpose instruments capable of measuring dc and ac voltages as well as current and resistances. The solid-state electronic multimeter (or VOM) generally consists of the following elements. In addition, the instrument....
-
In the Sine wave oscillator circuit often to be use the thermistor and Incandescent lamp, for upset the output of circuit has fixed value, the resistance of....
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741 opamp is connected as audio oscillator with Radio Shack 276-677 photocells in feedback circuits. When light strikes PC1, its resistance decreases and frequency of audio tone in headphone decreases correspondingly. When light strikes PC2, which is....
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-
A reliable 6 to 12 volts Voltage converter circuit and diagram using audio amplifier IC TDA 2003. This Voltage doubler circuit can be assembled on a Vero board....
-
SPI Integrated Circuit Bus , IC Buses, an IC, Chip-to-Chip Bus Serial Peripheral Interface, Integrated Circuit Bus types, and IC Bus Electrical Interface Descriptions, . Peripheral Interface (SPI) circuit is a . -> Integrated Circuit Bus Li....
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Nothing really new: a JFET is used to sense the electric field generated by high voltage electric line; the JFET amplifies the signal very little, but it lowers the impedence and provide current to a level suitable for transistor amplification. The two....
-
4 Channel 433MHz Wireless RF Remote Control Kit 200m. RF remote control provides long range of up to 200m / 650ft and can find many uses for controlling different devices....
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This ultrasonic movement detector circuit uses a crystal locked circuit to get maximum performance from the ultrasonic transmitter. However, the detection circuit is different. think it is more sensitive. Check all the components against the parts list. It....
-
This timer is based on a simple Monostable Circuit. The length of time the relay remains energized - the ON period - is controlled by the values of R3 & C2. And the length of time the relay remains de-energized - the OFF period - is controlled by the values....
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Colour TV Camera Tutorial - Block Diagrams - Electronics Circuit and Tutorials - Hobby Science Projects - Modulation enables low frequency audio signals to be radiated long distances. This is done by superimposing the low frequency audio signal on the high....
-
The purpose of this page is neither to give a comprehensive review of this popular theremin design, nor to be an introduction to the fascinating and quirky world of theremins in general. If you`re wondering "What the heck is a theremin ", check out the links....
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The receiving circuit: the infrared signal is inputed to MC3373 from 7 foot by phototube, the amplified signal outputs from 1 foot, it is transported into the 12 foot of decoder 8802. When the transmitter F is pressed, the voltage of 8802`s 11 foot up to 2.....
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It seems to me like the wire connected to the 5v pin is connected to the + pins of the breadboard. which are connected to nothing. There`s nothing else on the + column. I know this is a basic "google it" question, but probably due to the fact that I don`t....
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This audio noise filter circuit is a bandpass filter for audio frequency band. It filters unwanted signals that are lower or higher than the audio frequencies. It has 2 filters: a low pass filter and a high pass filter in a cascade configuration. Both....
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Logic Gates FM Transmitter Circuit Electronic Circuit Schematic Wiring Diagram...
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The ADAU1701 datasheet recommends on p18 that MP11 be used to derive MCLK. Now MP11 also serves the purpose of OUTPUT_BCLK when used for I2S. Therefore does this mean that I can connect MCLK and BCLK together 2. The ADAU1701 operates at 3V3 and AD1955 at 5V.....
-
Here`s The schematic shown below is a simplest LED flasher circuit. The circuit is using three LEDs which will start blinking or flashing when we provide 9 volt to the circuit. The circuit is so simple it uses a self flashing LED (LED 1) to make all LEDs....
-
-
Borrowing techniques echo sounder used to measure ocean depth, distance measuring device can be made with an ultra sonic. Gauge this distance using the same circuit with Digital Clock in the last article, coupled with a series of transmitter and receiver....
-
The circuit was reverse engineered from an old equipment. The op amp stage seems to me like a comparator/oscillator, it is comparing $V_0$ which varies over time because of the capacitors against the 2. 5[V] that is a square wave generatorwith 5V amplitud.....
-
This device is based on PICl6F628A one-chip computer, adopt one pair and receive and dispatch the independent ultrasonic transducer, utilize the Doppler effect, can detect in certain space whether someone enters effectively, and can output the switch of the....
-
LED indicator in this project can be use in the bike indicator or car direction indicator. Time 555 and BCD 7490 are use with few resistors more than 100+ electronics projects...
-
-
A Battery-status Indicator circuit can be useful, mainly to monitor portable Test-gear instruments and similar devices. LED D1 flashes to attire the user`s attention, signaling that the circuit is running, so it will not be left on by mistake. The circuit....
-
The following circuit shows about Slave Flash Light Control Circuit Diagram. Features: 68mH Inductor, give auto trigger for secondary flash light, ...
-
The FAN5607 Evaluation Board is a compact circuit including the FAN5607 HMPX in a 4x4 MLP package and two 4.7uF capacitors which can provide stable input/output current for up to four of Fairchild s super bright white LEDs...
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-
I added a second RM output and a sync input to the 555. The latter is based off of one of Rene Schmitz VCOs. ( ) ok, thank you. i asked because on the two PCB pictures above there are e. g. two transistors without any specification. the wiard schematics....
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-
The purpose of this circuit is to power a lamp or other appliance for a given time (30 minutes in this case), and then to turn it off. It is useful when reading at bed by night, turning off the bedside lamp automatically in case the reader falls asleep After....
-
A very simple active antenna can be designed using this electronic circuit diagram. This active antenna is based on transistors and other few common electronic components. Because in practice of frequency short-wave reception, the general rule is that if the....
-
0.1V to 50V Variable Power Supply Circuit Diagram. Features: the lowest current limit is 0.6 ampere, opamp CA3130 compares the reference voltage ....
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-
This is a simple Water level alarm circuits made using 555 Timer IC. Circuit will produce an alarm when the water level reaches a preset level....
-
The Tda2005 IC has a high output power: PO=10W+10W @ RL=2ohm, d=10% (stereo) and PO=20W @ RL=4ohm, d=1% (bridge) for Vs=14. 4V. The high reliability of the IC comes from the various protections against: output DC and AC short circuit to ground, overrating....
-
This design fulfills these requirements by means of a variable gain microphone preamplifier built around IC1A, a variable steep Wien-bridge pass-band filter centered at about 1KHz provided by IC1B and an audio amplifier chip (IC2) driving the loudspeaker. 1)....
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Description: 1995 Toyota Supra Electrical Circuit Diagram. Features: shown from the point where the power source is received from the battery as far as each ....
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Most LED driver circuits use a series resistor to control the current through the LED. For applications needing a few LEDs, this is optimal. However, for applications needing many LEDs, this becomes extravagantly inefficient and it is tempting to keep the....
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This antenna tuning unit (ATU) enables half-wavelength or longer wire antennas to be matched to the 50- antenna input of 27-MHz CitizensG ‚¬ Band (CB) rigs. The ATU is useful in those cases where a wire antenna is less obtrusive than a roof-mounted G ‚¬....
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The Servo Timer II was primarily designed for parachute deployment on water rockets, but can be used for other applications. The timer controls a single RC servo motor that can open a latch on a parachute door. Once triggered the timer waits a set amount of....
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Magnetic switch is a circuit which can respond to magnetic fields that were around the sensor. The series of magnetic switches uses sensors in the form of limit switches that provide an additional metal plate that can respond to a magnet. Magnetic switch....
VTTC (Vacuum tube tesla coil) is a Tesla coil with vacuum tubes as a switch. I used self-oscillating circuit with two russian (soviet) tubes GU-81M connected in parallel. The source of high voltage are two MOTs (Microwave oven transformers) connected in....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The 1K resistors in the circuit are capital so that the LED`s about-face on at altered audio levels. There is no acumen why....
I finally completed a working AM transmitter. The transmitter`s design is based on several ideas, but mainly based on Phil`s Li`l 7 Transmitter design. It is not always easy to achieve oscillation in LC-based transmitters without the right combination of....
A switching voltage regulator circuit shown in the schematic diagram here can be a low cost solution for your high efficiency requirement electronic circuit....
Connect the Negative side of the positive supply to the Positive side of the negative supply to create a +/-15vdc. This junction is the ground for the transducer to ensure a balanced voltage. 9) Continue the experiment by switching the power off, changing....
This circuit is intended to provide good square waves converting a sine wave picked-up from an existing generator. Its major feature consists in the fact that no power-source is needed: thus it can be simply connected between a sine wave generator and the....
This circuit is intended for children fun, and is suitable to be installed on bicycles, battery powered cars and motorcycles, but also in models and other games. With SW1 positioned as shown in the circuit diagram it reproduces the typical dual tone sound of....
The elements diameter of the antenna may vary between 5. 8mm and the dipole diameter may vary between 8. 12mm (12mm recommended) without the need of changing anything to the length or spacing. All elements except the dipole are electrically connected to the....
Numitrons are neat display devices similar to Nixie tubes, but they were designed for low voltage use. Numitrons are basically incandescent displays, using filaments for the segments. Basically, a seven-segment readout consists of seven narrow illuminated....
The MAX6499 comprises undervoltage and overvoltage comparators for window detection. WHen the monitored voltage is within selected `window`, GATE is enhances....
The circuit is very simple and inexpensive. This is good thing because most commercial stepper motor controller ICs are quite expensive. This circuit is built from standard components and can easily be adapted to be controlled by a computer. If you use cheap....
Using a thermistor in the position shown makes a heat activated sensor. A change in temperature will alter the output of the opamp and energize the relay and light the LED. Swapping the position of the thermistor and 47k resistor makes a cold or frost alarm....
Here is a simple circuit using IC NE555 that can be used to generate metronomes. Such a circuit is very useful to those who learns music. The circuit is nothing but an astable multivibrator wired around NE555. The components R1, R2&C1 determines the output....
Here is another fun project for children as well as electronics beginners. We often hear the sound of grasshopper or cockroach (i. e. shrill sound) at night. The project published in this website Electronics grasshopper produced PI-PI sound (sound like....
Keyer dimmer table lamp adopts two touch buttons to adjust the light. The light changes weaken from strong when peopletouch one of the buttons, and it changes strong from weaken when peopletouch the other button. Working principle The principle of this....
Following last year`s rediscovery of radio controlled flight, I`ve recently become enamored with the hacking/mod potential of the downright bargain priced 9-channel FlySky FS-TH9X transmitter (also sold as Turnigy/Eurgle etc). The original 2. 4GHz RF module....
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 circuit is a simple mixer circuit. It can mix two signal channels and one channel is output. Using a codec circuit, Convert stereo audio to mono audio time. -In circuit a FET number 2N3819 is main, it is better than a common transistors that a high....
Switching Regulator for High Power Efficiency When you should regulate a high voltage to a much lower voltage, switching regulator must be the only choice....
The signal can be converted by piezoelectric films in many ways such as thermal to electrical (temperature sensor), mechanical to electrical (microphone), and...
a typical rf amplifier that is used in an AM radio receiver. In figure 2-19, the input circuit is the antenna of the radio (L1-a coil) which forms part of an LC circuit which is tuned to the desired station by variable capacitor C1. L1 is wound on the same....
A mobile phones microphone or mouthpiece is a component used to convert sound signal into an electrical signal. The earpiece speaker is the one that converts electrical signal into a sound signal, likewise also the IHF, buzzer or ringer speaker do. A typical....
There are plans to make it 1Gsps in the future, using interleaved ADCs and staggered clock, but that`s beyond me at the moment, so the first iteration will only have 100Msps (fastest from single ADC). The part I`m most unsure about is the analog front end,....
Input current for a passive PFC circuit is insensitive to changes in the output ripple - so it requires a smaller inductance than previous circuits....
This power supply is meant as an auxiliary or as a permanent power supply for all common circuits based on a stabilized DC voltage between 3 and 30V provided that the consumption does not exceed 3A. Of course this power supply unit can also be used for other....
The 300W Amplifier circuit is shown it is a reasonably conventional design. Connections are provided for the Internal SIM, and filtering is provided for RF protection (R1, C2). The input is via a 4. 7uF bipolar cap, as this provides lots of capacitance in a....
The brain of the robot is made of Atmel Tiny2313 microcontroller. This MCU has a cool feature called In-System Programming which can be used to program memories of the MCU with almost-no-cost programmer. I used simple programmer which connects to parallel....
The Command Transmitter-Receiver (A3023) is intended to test the command receiver we propose for the ISL (Implantable Sensor with Lamp) in our Conceptual Design. The A3023 is a LWDAQ Device in two parts. The Command Transmitter section contains a 146-MHz....
In this tutorial you will build a wailing siren that plays a tone that increases and decreases in pitch. The circuit uses two 555 ICs and a loudspeaker....
Simple Electronic Multimeter High cost deters many hobbyists from buying a conventional multimeter. Since it is difficult to obtain cheap 50 uAor 100uA meters which are essential for a highly sensitive multimeter, an electronic alternative device is....
This circuit will trigger with any fluid with a resistance under 900K between the maximum separation distance of the probes. Let me explain further. The circuit uses a 4050B CMOS hex buffer working on a 5 volt supply. ..
Here is a High efficiency Emergency Lamp using High bright White LEDs. It automatically turns on when power fails and turns off when power resumes ..
This small FM transmitter with a range of about 50 meters designed for connection to the USB port. With lots of mini-transmitters then you have a comprehensive, action-packed radio program. Due to the power supply via the USB port of a high frequency....
Using TDA7262 integrated circuit manufactured by ST Microelectronics can be designed a very simple stereo audio amplifier electronic project which can provide a maximum output power of 20 watts per channel. TDA7262 is an ( class AB ) dual Hi-Fi Audio power....
The 555 Ic is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, notice the diode) is constant and equal to 22Kohm (givin a frequency of about 1Khz, notice the hum). When the....
Precision oscillator can be built using quartz crystal, but with proper component selection, you can also build one with RC (resistor and capacitor) circuit....
Reverse Engineering an EVAP System - Part 1 My friend/coworker has a 1997 Volkswagen Jetta (I4) that throws an EVAP SYSTEM Countless mechanics have attempted to diagnose it; none have ....
This is yet another variation on the "parallel resistor" dummy load. [Go -here- for a discussion on dummy load theory]. This is another one I built during my infatuation with copper pipe. It`s suitable for QRP HF operation of 5-watts or less average power,....
How often does it happen that you close down Windows and then forget to turn off the computer This circuit does that automatically. After Windows is shut down there is a click` a second later and the PC is disconnected from the mains. Surprisingly enough,....
This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and come with a built-in filter, which is useful when the....
The dark detector circuit shown here can be used to produce an audible alarm when the light inside a room goes OFF. The circuit is build around timer IC N....
It is one of the most versatile general purpose instruments capable of measuring dc and ac voltages as well as current and resistances. The solid-state electronic multimeter (or VOM) generally consists of the following elements. In addition, the instrument....
In the Sine wave oscillator circuit often to be use the thermistor and Incandescent lamp, for upset the output of circuit has fixed value, the resistance of....
741 opamp is connected as audio oscillator with Radio Shack 276-677 photocells in feedback circuits. When light strikes PC1, its resistance decreases and frequency of audio tone in headphone decreases correspondingly. When light strikes PC2, which is....
A reliable 6 to 12 volts Voltage converter circuit and diagram using audio amplifier IC TDA 2003. This Voltage doubler circuit can be assembled on a Vero board....
SPI Integrated Circuit Bus , IC Buses, an IC, Chip-to-Chip Bus Serial Peripheral Interface, Integrated Circuit Bus types, and IC Bus Electrical Interface Descriptions, . Peripheral Interface (SPI) circuit is a . -> Integrated Circuit Bus Li....
Nothing really new: a JFET is used to sense the electric field generated by high voltage electric line; the JFET amplifies the signal very little, but it lowers the impedence and provide current to a level suitable for transistor amplification. The two....
4 Channel 433MHz Wireless RF Remote Control Kit 200m. RF remote control provides long range of up to 200m / 650ft and can find many uses for controlling different devices....
This ultrasonic movement detector circuit uses a crystal locked circuit to get maximum performance from the ultrasonic transmitter. However, the detection circuit is different. think it is more sensitive. Check all the components against the parts list. It....
This timer is based on a simple Monostable Circuit. The length of time the relay remains energized - the ON period - is controlled by the values of R3 & C2. And the length of time the relay remains de-energized - the OFF period - is controlled by the values....
Colour TV Camera Tutorial - Block Diagrams - Electronics Circuit and Tutorials - Hobby Science Projects - Modulation enables low frequency audio signals to be radiated long distances. This is done by superimposing the low frequency audio signal on the high....
The purpose of this page is neither to give a comprehensive review of this popular theremin design, nor to be an introduction to the fascinating and quirky world of theremins in general. If you`re wondering "What the heck is a theremin ", check out the links....
The receiving circuit: the infrared signal is inputed to MC3373 from 7 foot by phototube, the amplified signal outputs from 1 foot, it is transported into the 12 foot of decoder 8802. When the transmitter F is pressed, the voltage of 8802`s 11 foot up to 2.....
It seems to me like the wire connected to the 5v pin is connected to the + pins of the breadboard. which are connected to nothing. There`s nothing else on the + column. I know this is a basic "google it" question, but probably due to the fact that I don`t....
This audio noise filter circuit is a bandpass filter for audio frequency band. It filters unwanted signals that are lower or higher than the audio frequencies. It has 2 filters: a low pass filter and a high pass filter in a cascade configuration. Both....
Logic Gates FM Transmitter Circuit Electronic Circuit Schematic Wiring Diagram...
The ADAU1701 datasheet recommends on p18 that MP11 be used to derive MCLK. Now MP11 also serves the purpose of OUTPUT_BCLK when used for I2S. Therefore does this mean that I can connect MCLK and BCLK together 2. The ADAU1701 operates at 3V3 and AD1955 at 5V.....
Here`s The schematic shown below is a simplest LED flasher circuit. The circuit is using three LEDs which will start blinking or flashing when we provide 9 volt to the circuit. The circuit is so simple it uses a self flashing LED (LED 1) to make all LEDs....
Borrowing techniques echo sounder used to measure ocean depth, distance measuring device can be made with an ultra sonic. Gauge this distance using the same circuit with Digital Clock in the last article, coupled with a series of transmitter and receiver....
The circuit was reverse engineered from an old equipment. The op amp stage seems to me like a comparator/oscillator, it is comparing $V_0$ which varies over time because of the capacitors against the 2. 5[V] that is a square wave generatorwith 5V amplitud.....
This device is based on PICl6F628A one-chip computer, adopt one pair and receive and dispatch the independent ultrasonic transducer, utilize the Doppler effect, can detect in certain space whether someone enters effectively, and can output the switch of the....
LED indicator in this project can be use in the bike indicator or car direction indicator. Time 555 and BCD 7490 are use with few resistors more than 100+ electronics projects...
A Battery-status Indicator circuit can be useful, mainly to monitor portable Test-gear instruments and similar devices. LED D1 flashes to attire the user`s attention, signaling that the circuit is running, so it will not be left on by mistake. The circuit....
The following circuit shows about Slave Flash Light Control Circuit Diagram. Features: 68mH Inductor, give auto trigger for secondary flash light, ...
The FAN5607 Evaluation Board is a compact circuit including the FAN5607 HMPX in a 4x4 MLP package and two 4.7uF capacitors which can provide stable input/output current for up to four of Fairchild s super bright white LEDs...
I added a second RM output and a sync input to the 555. The latter is based off of one of Rene Schmitz VCOs. ( ) ok, thank you. i asked because on the two PCB pictures above there are e. g. two transistors without any specification. the wiard schematics....
The purpose of this circuit is to power a lamp or other appliance for a given time (30 minutes in this case), and then to turn it off. It is useful when reading at bed by night, turning off the bedside lamp automatically in case the reader falls asleep After....
A very simple active antenna can be designed using this electronic circuit diagram. This active antenna is based on transistors and other few common electronic components. Because in practice of frequency short-wave reception, the general rule is that if the....
0.1V to 50V Variable Power Supply Circuit Diagram. Features: the lowest current limit is 0.6 ampere, opamp CA3130 compares the reference voltage ....
This is a simple Water level alarm circuits made using 555 Timer IC. Circuit will produce an alarm when the water level reaches a preset level....
The Tda2005 IC has a high output power: PO=10W+10W @ RL=2ohm, d=10% (stereo) and PO=20W @ RL=4ohm, d=1% (bridge) for Vs=14. 4V. The high reliability of the IC comes from the various protections against: output DC and AC short circuit to ground, overrating....
This design fulfills these requirements by means of a variable gain microphone preamplifier built around IC1A, a variable steep Wien-bridge pass-band filter centered at about 1KHz provided by IC1B and an audio amplifier chip (IC2) driving the loudspeaker. 1)....
Description: 1995 Toyota Supra Electrical Circuit Diagram. Features: shown from the point where the power source is received from the battery as far as each ....
Most LED driver circuits use a series resistor to control the current through the LED. For applications needing a few LEDs, this is optimal. However, for applications needing many LEDs, this becomes extravagantly inefficient and it is tempting to keep the....
This antenna tuning unit (ATU) enables half-wavelength or longer wire antennas to be matched to the 50- antenna input of 27-MHz CitizensG ‚¬ Band (CB) rigs. The ATU is useful in those cases where a wire antenna is less obtrusive than a roof-mounted G ‚¬....
The Servo Timer II was primarily designed for parachute deployment on water rockets, but can be used for other applications. The timer controls a single RC servo motor that can open a latch on a parachute door. Once triggered the timer waits a set amount of....
Magnetic switch is a circuit which can respond to magnetic fields that were around the sensor. The series of magnetic switches uses sensors in the form of limit switches that provide an additional metal plate that can respond to a magnet. Magnetic switch....
