0.1 Hz oscillator (CB8043E)

This oscillator was found in a 1967 General Electric documentation. The UJT is P-channel, an unusual type today.

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Binary Test (CB17400E)
Centigrade thermometer (CB9491E)
Found in Intersil documentation from the 90s, this thermometer uses an analog indicator. The...
Fence Electrifier (CB11372E)
This circuit is from an American manual from 1974. It uses a diac (Q1) and the SCR can be the...