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 circuit was found in an old American publication. The transformer is the type of output found...
This current source circuit with the CA3130 was found in a 1977 publication. The circuit provides...
The project presented consists of a flasher alternated with relay, which can be installed at the...