This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
The circuit in figure 1 is a dynamic test for FETs. The characteristic of a FET is displayed in...
This beat frequency oscillator was found in a 1980s documentation. The original FET has a grounded...
This circuit produces signals that depend on the input control voltage. It is a Voltage Controlled...