No information is given on the transformer in this circuit that we found in an American 1967 documentation. The power transistors are of the time and mounted on a plug-in module.
This circuit determines the frequency of a signal by beating with a known signal. The circuit was...
With the values of the components indicated, this timer controls intervals from a few seconds to a...
The purpose of this circuit is to automatically turn a water pump on and off. Sensor 1 is the...