1 5v LED FLASHER

1.5v LED FLASHER

This will flash a LED, using a single 1.5v cell. It will even flash a white LED even though this type of LED needs about 3.2v to 3.6v for operation.


The circuit takes about 2mA but produces a very bright flash.

source : http://www.talkingelectronics.com.au/projects/200TrCcts/200TrCcts.html

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LED light flasher

This is a very basic schema for flashing one or more LEDS and also to alternately flash one or more LEDs.

It uses a 555 timer setup as an astable multivibrator with a variable frequency.
With the preset at its max. the flashing rate of the LED is about 1/2 a second. It can be increased by increasing the value of the capacitor from 10uF to a higher value. For example if it is increased to 22uF the flashing rate becomes 1 second.

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