CONTROL DEVICE FOR CONTROLLABLE ELECTRIC VALVE

摘要

A device for supplying a control terminal of a three-terminal controllable electric valve connected between positive and negative lines to a control signal includes a transformer having a primary and a secondary windings, a first capacitor connected to the primary winding, and a second capacitor connected with the secondary winding. The first capacitor is adapted to be charged when the electric valve is turned off and to discharge through the primary winding when the same is turned on. The current induced in the secondary winding by the discharging current is supplied, as an operating current, to the circuit for driving the electric valve.