We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still common in these types of applications. The circuit uses a PROM.
This circuit is an excellent application for the PIC in audio, but the reader who intends to do...
In this simple receiver from a 1966 documentation, the base-emitter junction of a germanium...
Using common components, this circuit found in a 2003 publication, controls the level of a water...