This circuit was found in the September 1997 issue of Electronics Now magazine. The circuit uses two op-amps and includes the symmetrical power supply.
This circuit of the 1970s uses Germanium transistors. Changes can be made to use silicon...
This circuit was found in an integrated circuit manual from the 1980s. The circuit can be designed...
Found on a 1965 Radio Electronics, this circuit fires a signal xenon lamp applied to the SCR from...