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BEAM pummer circuits
Blinky night lights

Wilf posted a neat, very efficient "pummer" circuit powered by one of his versions of a nocturnal solar engine (in particular, the SIMD1 / Solar Regulator):


Here's Wilf's quick description of his pummer (the small bit of circuitry in the right part of the above diagram:

The PowerSaver Flasher uses capacitive output coupling to produce brighter shorter flashes and has a much lower average current drain than standard bicore or 74HC14 flashers. The PS Flasher with one LED circuit (2 LEDs) runs all night from a 1F capacitor charged to 5.5V. Up to 12 LEDs can be controlled with one 74HC14 flasher and probably would run for 2 hours from a full charge. Use a range of timing resistors between 1M and 4.7M for each oscillator to give a random light show appearance.

For more information

This circuit was introduced in beam list message #241, and also reappears in beam list message #4332

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Page authors: Bruce Robinson and Eric Seale
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