This circuit was obtained from the March 1994 Electronics Now magazine. The circuit uses a common transistor which can be a low noise type such as the BC549.
Found on Popular Electronics from 1970, this circuit fires a xenon lamp producing a C1-dependent...
This simple test circuit was found in the April 1983 issue of Radio Electronics magazine. The...
The transistors used in this 1985 Radio Electronics circuit are for general use. The gain pot can...