Warning lights for bicycles

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A simple warning for bicycles can be designed using electronic diagram below. This warning works when the bike is in motion, and while is at rest (at traffic lights) because the light still works, is powered by accumulator.
During walking with lighting "connected" (bicycle dynamo is connected), NiCd battery consists of four mounted in series, is charged through R1 and D1, the relay is closed, and its contacts connects bicycle lamps to the battery.

Circuit Diagram:

Warning lights for bicycles electronic circuit project schematic

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Circuit Diagrams

Circuite electronice

Warning lights for bicycles

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