To provide an electronic control system wherein an apparatus allows two or three wire operations.
A power supply 150 can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collected in both two and three wire installations. Both zero cross detectors 110 are monitored and are used to automatically configure the electronic control. Over voltage circuitry senses an over voltage condition across a MOSFET which is in the off state and turns the MOSFET on so that it desirably will not reach the avalanche region. Over current circuitry senses when the current through the MOSFETs has exceeded a predetermined current threshold and then turns the MOSFETs off so they do not exceed the MOSFETs' safe operating area (SOA) curve.
CHRISTENSEN GRAHAM
JOHNSON BENJAMIN AARON
LEICHLITER SHAWN L
NEWMAN ROBERT C JR
THOMPSON STEPHEN SPENCER
WU CHENMING
Jun Tsuruta
Tetsuro Shimada
Kenzo Hiraiwa