Micro Flasher

Posted on Feb 6, 2014

This micro flasher circuit continuously emits flashing light with the consumption of very less power. The circuit can run for a very long time for four 1. 5 V torch cells. Here a low power CMOS IC CD4093 (IC1) is used to produce sharp pulses of 20 ms from a red LED. The LED appears to be glowing continuously due to persistence of vision, and lot of p

Micro Flasher
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ower is saved. The IC1 is quad NAND gate whose one gate is used for producing oscillations. The unused inputs are kept to logic 1 by connecting it to the positive. The value of R1 determines the charging current of C1.

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