This source was originally suggested by Delco in a 1969 documentation to power amplifiers up to 50 W. The transistors are of the time admitting modern equivalents.
This circuit is from a National Semiconductor manual from the 90s, using an integrated regulator for...
This circuit was found in a 1980s Signetics documentation. The integrated circuit is from the era. The...
This circuit is used to measure the power of transmitters from 3 to 30 MHz with powers up to 100...