Found in National Semiconductor documentation from the 1990s, this circuit employs basic components from the time.
This circuit is intended to provide a standard signal for oscilloscope calibration. We found it in...
We found this 12 V ignition circuit in the 1964 RCA transistor manual. The 2N3054 can be replaced by...
The output transistors can be BC548 and BC558. The circuit is from a 1975 documentation showing a...