This circuit for currents from 500 mA to 1.5 A was found on a Ham Radio from the 90s. R4 determines the current in the load under test. Transistors must be equipped with radiators.
This amplifier with the LM1098 and LM101 by Motorola from a 1990 manual can be designed with more...
This small power amplifier makes use of an output transformer given its design time. In fact, the...
We found this circuit in an American 1980s documentation. Other comparators can be used and the...