Found in 1967 Raytheon documentation, this circuit uses a company coupler consisting of a lamp and an LDR. The transistor is according to the load current.
This circuit was found in the component's own manual, which is not very common nowadays. Note that...
The circuit shown is a Step-Down converter that can provide a 5 A output with 4 to 18 V inputs. The...
This circuit, from a 1988 documentation, makes successive actuation of the shower to control the...