What happens when the low-voltage current flow in the coil primary winding is interrupted by the switching device?   The primary winding delivers a high-voltage spark to the plugs.   The magnetic field in the coil primary builds.   The secondary voltage drops to zero volts.   High voltage is induced in the secondary windin

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Control transformer

A Control Power Transformers refers to a two-winding transformer that converts an electrical voltage from one value to another using the concept of mutual inductance. The Control Power Transformers help to control/switch the main circuit components. Therefore, the transformer that provides a lower or higher voltage supply to the industrial controls for control circuits like motor starters, controllers, etc., refers to as Control Power Transformers.