The purpose of this circuit is to check the linearity of SSB amplifiers. The circuit was found in an old documentation for hams. The diode is a general purpose detector type.
The circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The...
Found in a 1969 Electronics World, this circuit is intended for amplifying analog cable TV...
Found in an Electronic Design from the 90s, this circuit uses a component of the time, difficult...