This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is from a Radio Electronics from July 1988.
This circuit was found in old American documentation. Transistor is general purpose and coil rated...
This tiny photocell-powered audio oscillator was found in a book on transistors from the 1960s. The...
This circuit was found in a Hands On Electronics from the 90s. It is intended to supply old tape...