Buffered Detector (CB6669E)

This circuit was found in 1967 General Electric documentation. The transistors of the time can be replaced by modern equivalents.

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Analog TV Modulator (CB20768E)
This circuit was found in an American documentation from the 80s. The transistor can be any...
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When the control level is increased from 0 to 1 (LO to HI), this circuit is activated, which...
High Impedance Instrumentation Amplifier (CB15879E)
The circuit in the figure is based on two integrated LM108 and its gain is basically determined by the...