Category Archives: Lighting and LED Circuit

Power FET Lamp Flasher

Posted on August 14, 2011 by Rend

As an alternative to bipolar transistor, a lamp flasher can be built by using two power FETs.  Like other flasher circuit, this circuit alternately switch the two lamps off and on.  It is based on a simple astable multivibrator that … Continue reading →

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555 IC LED Flasher for Up To 10 LEDs

Posted on June 29, 2011 by Rend

This LED flasher circuit uses 555 IC, and is capable of driving up to 10 LEDs. The good news is, the use of multiple LEDs in series doesn’t increase the power consumption when compared with using only two LEDs. If … Continue reading →

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Multiplexed BCD Decoder 7 Segments Driver

Posted on June 19, 2011 by Rust

To save the complexity of driver circuit, a multiplexer icrcuit can be used for the solution. With this multiplexed BCD decoder, we can use only one BCD decoder to drive 3-digits 7 segment display. Each digit will be activated in … Continue reading →

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