Photo FET trigger (CB8329E)

The photo FET is not a common component today. In this 1964 Electronic Design application we have a light switch circuit.

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Mechanical Reverb (CB23788E)
This reverb effect was found in the December 1961 Radio Electronics magazine. It makes use of...
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Found on Popular Electronics from the 1990s, this oscillator uses a general purpose transistor. The...
High Pass Filter (CB25602E)
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