Tritium Solar engine

Posted on Jan 20, 2013

The Tritium circuit was the first (to my knowledge) type 3 SE. As such, it is quite experimental, and should be regarded as a prototype rather than the `state of the art`! Nevertheless, it does function reasonably well, and in some circumstances outperforms other solar engines such as the Freds that I have lying around.

Tritium Solar engine
Click here to download the full size of the above Circuit.

It works by charging the capacitor through the base-emitter junction of an NPN transistor (Q1). When current is flowing through this junction, the collector is held low. When the charging current tapers off, the collector will start to drift higher pulled

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