This circuit was found in a 90s EDN. Its purpose is to increase the efficiency of operational amplifiers. Power MOSFETs and inverted zeners support equivalents.
This antenna amplifier or booster for receivers from 100 kHz to 30 MHz was published in a...
Found in a 1993 Electronics Hobbyst Handbook, this passive circuit can be used with common...
This circuit was obtained from a 2005 Linear Technology application manual. The circuit is...