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led optocoupler circuit diagram

LED Optocoupler Circuit

P. Marian - 01/10/2010

This LED Optocoupler circuit uses two ordinary LEDs as the optocoupler element. When a voltage of 2V is [...]
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 [...]
Diac controlled LED Flasher

Diac Controlled LED Flasher

D Mohankumar - 01/06/2010

This is probably the simplest idea to generate flashing light from an LED using AC. The circuit is [...]
Logic State Indicator

Logic State Indicator

D Mohankumar - 01/05/2010

Here is a simple logic state indicator to test whether the output of digital IC is in logic [...]

Power Saving LED Circuit

D Mohankumar - 12/12/2009

If an LED pilot lamp is used in battery powered circuits, it will unnecessarily consume power. This circuit [...]
220V LED Circuit Schematic

AC Powered 220V Led Circuit

D Mohankumar - 11/13/2009

This is the simple version of a white LED lamp that can be directly powered from mains. It [...]

Simple LED Circuit

P. Marian - 04/26/2009

Some LED circuits explained examples from various projects: flashing LEDs, 220V LEDs and more. We start by showing [...]

Fairy Flashing LED Lights

Received by Email - 12/07/2008

This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor [...]
christmas ligths circuit schematic

LED Christmas Lights Circuit

Received by Email - 11/30/2008

Have your already set up a Christmas tree in your house and decorated it with traditional lights? Build [...]
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