This circuit was found in the February 1997 Electronics Now magazine. The circuit has a power supply for the NE602 and free inputs and outputs for projects.
This power control with SCR was found in Radio Electronics from April 1966. The components are...
We found this circuit in a documentation for radio amateurs from 1977. The circuit can be changed to...
We found this RF amplifier in documentation from the 1970s. Field effect transistors support...