Found in an EEE this circuit uses FETs of the time and a bipolar one. Current equivalent transistors can be used.
Found in a 1966’s General Electric documentation, this circuit uses a triple diode from the time....
This 3-digit circuit was found in the 1992 special edition of the Radio Electronics Handbook. The...
This circuit was found in a 90s Popular Electronics. It is possible to analyze the voltages of an...