Sunday, May 22, 2011

Simple 1.5V powered LED Flasher circuit diagram

This is a simple 1.5V powered LED Flasher circuit diagram. This circuit can flash 1.7V or 2.3V LED (depend on the color) using 1.5Vdc input. The LED will turn on when the 100u capacitor “jacked up” by the collector of BC557. The circuit is a charge-pump design.


This is where a capacitor (electrolytic) is allowed to charge and is then raised higher and allowed to discharge into a load. The load sees a voltage that can be higher than the supply.

From: http://simpleelectronic.com/2010/06/13/simple-1-5v-powered-led-flasher-circuit-diagram-2/#more-970





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1 comment:

  1. MuchtarJune 27, 2020 at 6:08 PM

    this circuit. of led flashing if run 24 hour. how long time it need. and how much drain current need. if use coin cell and if use AA Battery 1.5 volt alkaline

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