This circuit was found in a 1965 US documentation. The circuit converts a DC signal to a 400 Hz AC signal. Transformer data was not provided.
Found in a 1968 Mullard manual, this circuit measures temperature by infrared radiation. The...
The purpose of this circuit is to detect the movement of a person by the changes in light that...
We found this circuit in a Popular Electronics of the 90s. The circuit can be easily mounted...