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 obtained from an old Electronic Design. The components are from the period but...
Toshibas IC Brushless Motor Drivers Toshiba offers through Mouser Electronics a broad range of...
The 1: 1 transformer on this circuit found in a 1967 Electronics World can be wrapped around a...