This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
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...