DIMMER CIRCUIT WITH IMPROVED INDUCTIVE LOAD IMBALANCE PROTECTION

摘要

A protection circuit for protecting a dimmer circuit controlling an inductiv e load including an imbalance detector for detecting an asymetrical operation in the load and circuit control means for causing the dimmer circuit to reduce a DC component in the load upon detection of the asymetrical operation. A load imbalance detector is also disclosed having a load DC component detector, a comparator and a signal generating means for generating means for generating a circuit shut down signal if the DC component exceeds a pre-set DC threshold.