Micropower amplifier (CB7461E)

This amplifier was found in an Electronics Now from the 90s. The FETs are part of a CD4007CB.

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Crystal oscillator (CB9633E)
This common crystal oscillator configuration was found in a 1980s American documentation. The...
Differential voltmeter with FETs (CB23655E)
This circuit was found in a Radio Electronics from May 1965. FETs are from the time, but the...
Audio Amplifier TAA300 (CB20025E)
The integrated circuit used in this 70's application is not common today. The circuit consists of a small...