We found this circuit in Radio Electronics magazine from August 1984. The circuit aims to control the power supplied to an alternating current load. The components are common.
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...