Found in the April 1978 issue of Radio Electronics magazine, this circuit is intended to be powered by a symmetrical 15 V source. The signals are low intensity.
Found in Popular Electronics from the 90s, this circuit uses a 2N2646 and a general-purpose transistor...
The crystal frequency of this circuit found in an American documentation is limited only by the...
These two circuits were found in Radio Electronics magazine from February 1960. The transistor is a power...