We found this circuit in the Linear Applications Handbook of the 1994 National Semiconductor. The transistor must be a high voltage type and the LM3900 power supply must be symmetrical.
This circuit was obtained in an old publication from 1974, but it can still be assembled with some...
Used in radio reception, this circuit was found in the February 1983 Radio Electronics magazine. The...
This circuit, with output currents up to 500 mA, can stabilize or regulate the output voltage of a...