Switching regulator subsystems intended for use as dc to dc converters. 3V to 40 Volt DC Converter circuit | The use of switching regulators is becoming more pronouncedover that of linear regulators because the size reductions innew equipment designs require....

A new type of remote control based on ultra sonic sound. The transmitter part of the circuit is build around IC1(NE 555). The IC1 is wired as an astable multi vibrator operating at 40KHz. The output of IC1 is amplifier the complementary pair of transistors (....

This is a simple magnetic levitation circuit which suspends objects a set distance below an electromagnet. The physics behind it is to simply provide a mag....

The metal detector circuit consists of oscillator and sound-light alarm circuit, and the circuit is shown as the chart. Oscillator circuit consists of inductor L, capacitor C1, sensor switch integrated circuit IC1 (includes oscillator, detector and....

The 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 green LED turns off, the red LED turns on and the bleeper sounds. The time period is set....

This circuit features an intermittent siren output and automatic reset. It can be operated manually using a key-switch or a hidden switch; but it can also be wired to set itself automatically when you turn-off the ignition. By adding external relays you can....

DC Motor Control Using A Single Switch this simple circuit lets you run a DC motor in clockwise or anti-clockwise direction and stop it using a single switch, pdf file DC motor reversing circuit DC motor reversing circuit, A DC motor reversing circuit using....

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This circuit takes standard 0-10V control voltage (for example from analogue light controlling desk ) and outputs a standard 1-2 ms RC servo motors control pulse. Component How many 100 kohm resistor 2 47 kohm resistor 1 33 kohm resistor 1 470 ohm trimmer 1....

The AGC is used in many system especially communications. This AGC? works at 50Mhz, and the output voltage is set by a digital signal that is needed by...

The mini condenser microphone converts sounds into an electrical signal. Resistor R1 provides bias for the condensor microphone`s internal amplifier transistor. The 2N3906 PNP transistor acts as a low noise microphone input amplifier. The 10K gain....

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I have also realised that my intentions for night air charging are possible, but unnecessary. When heating is going on (late March/early April) the boxes worked at night because air temp was better than glycol temp - that was helpful. Now that it is summer....

The Passive Aircraft Receiver is basically an amplified "crystal radio" designed to receive nearby AM aircraft transmissions. The "passive" design uses no oscillators or other RF circuitry capable of interfering with aircraft communications so it should be....

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With the wide application of SMT technology in products such as the computer, network communication, consuming electron and car electron, etc. , the assembly of the electronic product prones to complicating, high precision, melting and multi-functional....

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Here I have described how to connect a 16 by 2 LCD display to a microcontroller. Here I have demostrated it with very common pic 16F877A. This is the circuit diagram. Here I haven`t showed the power supply and oscillator connection for pic and LCD. LCD....

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infrared remote controlled switch is second remote controlled project in this website using 555 ic circuit diagram with description of remote controlled switch...

Circuit PT2399 digital Echo Circuit schematics Circuit Electronics, Digital Echo Processor IC PT2399 is using CMOS technology in audio purposes. digital Echo Processor PT2399 is implementing the system in the process of ADC and DAC audio r....

An electric fence, perimeter protection circuit, designed to run on batteries, and provide configurable pulses of up to 20KV, to protect a tent perimeter against bears or other animals, out in the wild. The device uses two 555 timer circuits to generated a....

DX TV enthusiasts often have to deal with relatively crowded VHF bands. In these instances, reduced TV receiver bandwidth results in greater selectivity. The other advantage of bandwidth reduction is improved signal to noise ratio. This results in less noise....

The ADV7390/ADV7391/ADV7392/ADV7393 are a family of high speed, digital-to-analog video encoders on single monolithic chips. Three 2.7 V/3.3 V 10-bit video DACs provide support for composite (CVBS), S-Video (YC), or component (YPrPb/RGB) analog outputs in....

This simple circuit is build around a CMOS IC 4060 to obtain the required timing. During day time the LDR has low resistance and keeps the pin 12 of the IC1 high, preventing the IC1 from oscillating. When it is dark the LDR resistance becomes high and the....

Communication with the MCP3028 ADC chip is done using a simple serial interface compatible with the SPI protocol. The Pic16f84 or Pic16f628 didn`t had hardware SPI peripheral. However, software implemeted SPI protocol can be done to communicate with 12 bit....

This power supply electronic circuit is a high current 5 volts power supply circuit that use a 7805 voltage regulator and some classic electronic components. T1 acts as a current limiter. Once the voltage on R2 + R3 is greater than 0. 6 0. 7 V, the....

This is a simple hardware computer interface and Linux program which can be used to control the most commonly used buttons on any consumer Family Radio Service (FRS) or General Mobile Radio Service (GMRS) radio. There are 22 available FRS/GMRS frequencies in....

I`ve been putting in a lot of extra hours at work the last week in anticipation of an editing deadline. Despite this, I thought it was about time that I attempt a little hardware hacking. Even before computers, I was facinated by electronics. I read book....

For C3, the 100pF across R2. The circuit does exactly the same thing, once again with no explanation. Apparently the utility ought to be obvious, but I`m new to earnest analog electronics. I can only assume that it`s stabilizing something, but I don`tknow....