Motor Start Capacitors

Electrolytic capacitors are employed in single phase induction motors in order to increase their starting torque.

It is necessary that such starting takes place in a fraction of a second and that once starting has occurred the capacitor is disconnected from the circuit by means of either a starting switch or relay.

The capacitive element is made of aluminium foils treated and separated by a leaf of impregnated paper as the electrolyte.