3V LED Chaser

Posted on Oct 4, 2012

There are many 9V chaser circuits that seem to waste about 7V when driving LEDs that are only about 2V. This project is unique, because it uses only two inexpensive alkaline battery cells totaling 3V for power. Since most of the waste is eliminated, the cells last a long time. Unlike the other circuits, this one flashes the LEDs for only about 30ms each, further extending the battery life. For user convenience, it has a stepper speed control and a brightness control. At slower speeds and with reduced brightness, the battery life is further extended considerably. Mounted in a circle, the LEDs appear to rotate as they step from one to the next.

3V LED Chaser
Click here to download the full size of the above Circuit.

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Aman bharti   Apr 11, 2018

Very good circuit design . Also should explain about used capacitors and transistor in this circuit. Also can check here http://www.circuitspedia.com/led-sequence-flashing-led-flasher-chaser-using-4017/

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