Scheme of Using Self-perpetuating Relay in Prepay WATT-hour Meter
Zhanguo Wang · Yibiao jishu yu chuanganqi · 2008
A scheme used to control selfperpetuating relay was introduced,which was applied in prepay WATT-hour meter design.The single chip microcomputer controlled driver circuit consist of IR2110 to outlet pulse signals according to power remainder and state of WATT-hour meter,so as to drive H-bridge circuit consist of MOSFET.When positive and negative pulse overpass the H-bridge whose load is windings of self-perpetuating relay,the self-perpetuating relay can be switched between double stable state.The design and controlling of driver circuit were illuminated in detail.This scheme can generally be applied in many occasions by reconstructing a little.