This circuit of a Popular Electronics is intended to control a wiper. The circuit consists of a relaxation oscillator with unusual component. The relay must be sensitive.
The figure shows a way to apply gain control to the LM3600 OTA. The circuit is from a Radio...
We found this circuit in a 1980s American publication from Motorola. Modern equivalent transistors...
This circuit can be used both as a beat oscillator and for testing and adjusting AM receivers for...