This circuit was found in a Ferranti documentation from 1969. The transistors are common types of the company at the time. Smaller equivalents may be used. The output power is of the order of 150 mW.
The main feature of this circuit is that it provides a sine waveform signal. In this circuit, the...
This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is...
The circuit presented, from a 2005 documentation, can provide from 1 W to 2.5 W of output when...