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.
In the figure we show an interesting application for integrated circuit 4001. This circuit causes a...
The operational 3403 is not currently common, but a similar configuration can be made with modern...
Found in a 1954 documentation, this circuit uses a germanium transistor from the time. The coil...