This circuit is from a 1980s Motorola documentation. The circuit can be set to fire from 60 to 120 V DC or from 42 to 84 V AC. The circuit has a forehead button that activates an indicator lamp.
This circuit was found in the July 1988 issue of Radio Electronics magazine. It makes use of an...
We found this conventional version of a single-transistor oscillator in the January 1996 issue of...
This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used...