This is a precision half-wave rectifier, suggested by Texas Instruments. Diodes are commonly used, and resistors can have signal values. The power supply must be symmetrical.
This circuit was found in a Dutch documentation from 1970. The circuit makes use of semiconductors that...
We found this chopper circuit in a 1967 publication. The transistors are of the time, and current...
Found in a 1964 Electronic Design, this circuit generates pulses based on an avalanche diode of...