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.
Found in a 1967 American electronics magazine, this circuit has an input impedance of 2000 ohms....
This circuit makes use of components from the time it was published. The TCA151 is not a common...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...