Originally suitable for photography applications, this circuit from a Popular Electronics from the 90s can also be used to time plate baths. The components are common, and the sensor is remote.
This simple audio signal tracer or follower can be made with a BC548 instead of the original...
The circuit shown in figure 1 is a suggested application for ISL8107, a new integrated circuit from...
This notch filter or reject filter rejects signals of a certain frequency with good selectivity. The...