Definitions for "Control circuit"
The circuit which carries the electric signals directing the performance of a controller, but not carrying the main circuit power.
a feedback circuit that subtracts from the input
a circuit in a piece of equipment or an electrical circuit that carries the signal determining the control action, as distinct from the power used to energize the various components.
Parts that measure tank temperature, direct the unit to begin heating and provide safety controls to prevent overheating or other unsafe operating conditions.