This classic windscreen wiper interval setup was found in American documentation from the 90s. The circuit can be found with variations at other points on this site.
Found in an October 1992 Radio Electronics magazine article, this circuit generates a low-power tone in...
Found in a 1980s documentation, this amplifier features high common mode rejection. The operating...
This circuit was obtained in a technical publication from the 1970s. It fires a diac and thus a...