temporal_power

281

04:32:10

Simple circuit to provide temporal, time-limited power to a system.   Here, an LED acts as the load. Activate the push-button switch to provide power; releasing it starts the discharge cycle, controlled by the 22M resistor/10uF capacitor combo, as set giving many minutes of operation.  Replace the push button with a mercury switch and then a simple shake of the device will activate.   Good for small lighting, radios, etc.

published 12 years ago

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