This circuit was found in a 1965 Electronic Design. Transistor Q2 must be load dependent. The circuit can be adjusted for currents from 1 to 10 A. The voltage drop is 3 V and the maximum voltage is 35 V.
This circuit was found in an old Philips publication. The circuit supplies a voltage corresponding to 4.5 V...
This circuit was found in Radio Electronics from the 90s. It uses a transconductance operational...
This 500 MHz oscillator has an output power of 1 W when powered by a 20 V source. The circuit was...