CONTROL CIRCUIT OF ELECTROMAGNETIC VALVE

摘要

PURPOSE:To prevent easily the generation of parasitic oscillation in a control circuit of electromagnetic valve ranging over the whole controlling range by a method wherein a semiconductor diode and a capacitor are connected in parallel to a control circuit switching an electromagnetic valve. CONSTITUTION:A semiconductor diode 1 and a capacitor 20 are connected in parallel to a control circuit switching an electromagnetic valve 2. As the capacitor 20 is connected, capacity of the capacitor at the time of back-ward bias is increased to prevent the generation of parasitic oscillation ranging over the whole controlling range. This control is suitable to apply to an instantaneous hot-water heater. By this way, the generation of parasitic oscillation ranging over the whole controlling range can easily be prevented.