205 articles written by Received by Email

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switch mode power supply

LM2674 5V Switch Mode Power Supply

Received by Email - 08/01/2010

This 5 volts Switch Mode Power Supply circuit use the IC from National Semiconductor has been producing and [...]
6 to 12 volts converter

6V to 12V DC Converter Circuits

Received by Email - 07/21/2010

Here are some of 6V to 12V DC converter circuits that can be used to convert a small [...]
automatic light switch negative chassis ground

Automatic Parking Light Switch Circuit

Received by Email - 07/04/2010

This automatic park light switch with LDR automatically turn ON the light when the surrounding light dims to [...]
transformerless power supply circuit

Transformerless Power Supply 30V 1A

Received by Email - 04/04/2010

This transformerless power supply circuit is designed for medium current applications. During the negative half period, the capacitor [...]
electronic dog whistle

Electronic Dog Whistle Circuit

Received by Email - 01/21/2010

Need electronic dog whistle? It is widely known that dogs can hear sounds with frequencies higher than the [...]
digital volume control circuit diagram

Digital Volume Control Circuit

Received by Email - 01/18/2010

The heart of this digital volume controller DVC circuit is IC2 4067, 16-channel analog multiplexer. Because the 1kΩ [...]
audio compander schematic

Audio Compander Circuit

Received by Email - 01/15/2010

This audio compander circuit schematic is equiped with NE575 produced by Signetics, it is working with a 3 [...]
cb fm 27mhz receiver circuit diagram

27MHz CB Receiver Circuit

Received by Email - 01/12/2010

This is a simple 27MHz FM-CB receiver circuit built with TCA440 for listening CB ( citizen's band ) [...]
wien bridge oscillator circuit diagram

Wien Bridge Oscillator Circuit

Received by Email - 01/11/2010

THis Wien bridge oscillator is very simple and as every wien oscillator has low distorsion and the resonance [...]
fake led alarm

Fake LED Alarm Simulator Circuit

Received by Email - 01/08/2010

This circuit simulates an alarm to discourage thieves and it is originally designed to be used on bicycles [...]