This circuit uses a 555 (according to the diagram) to generate 50 ms tone bursts at a frequency of 1.5 kHz. The circuit is from an 80's Electronic Design.
This circuit was found in RCA and General Electric documentation from the 1980s. The circuit has...
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...
This circuit, which appears in this section elsewhere, is from an American 1980s documentation....