Featured in the February 1949 Radio Electronics magazine, this benchtop instrument generates multi-range audio signals. The circuit has 6 tubes including the rectifier.
With this name, we find a photorelay in a publication from 1966. The transistor is made of...
This 6-transistor Japanese radio from the 1960s used germanium transistors and had an output power...
The waveform generated by this circuit produces a sound similar to that of a bird. The circuit is based...