This small battery-powered high-voltage generator was found in Radio Electronics magazine from June 1965. The transformer is the power supply type determining the output voltage,
This timer for a few minutes was originally indicated for photographic applications. We found it...
This experimental AM radio circuit was found in a 1979 English magazine. It can be fitted with a...
Found in an American publication from the 1960s, this circuit triggers with RF signals. The relay...