4W Amplifier (CB6205E)

This high gain circuit is from 1969 General Electric documentation. The transistors are of the time, but equivalent types can be tested.

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Motor Control (CB14451E)
This motor control for robots is from an English documentation from 1968. The original transistors are...
SHTW2 Humidity and Temperature Sensors (COM073E)
August 2016 - It can be obtained from Mouser Electronics the new temperature and humidity sensors from...
Analog TV Modulator (CB20768E)
This circuit was found in an American documentation from the 80s. The transistor can be any...