This circuit tests the reverse voltage of power diodes. The transformer is high voltage and so are the rectifier diodes. The circuit is from a 1976 QST magazine.
This decoder for FSK modulated signals can operate at frequencies of 10.8 MHz. We find it in...
We found this circuit in a 1965 publication by General Electric. The zener is 8.2 V x 1 W and the...
Found in an Electronic World, this circuit is designed to control solenoids up to 5 A. The circuit...