Found in an American publication of 1968, this circuit makes use of a pilot light of the time. It can be replaced with LED with appropriate series resistor. Transistors may be modern equivalents.
The 8038 integrated circuit consists of a function generator with outputs of three waveforms. It...
New Series is Supported by START to Optimize Software Support and Includes Rich Features in 4 KB...
This two-transistor circuit was found in American documentation from the 1990s. The circuit can use...