Ballast safety circuit

摘要

A ballast safety circuit is disclosed. The ballast safety circuit includes a sensor in the form a toroid that includes a pair of coil windings for coupling to a pair of input lines on an input side of a ballast. The toroid further includes a third coil winding for detecting a leakage current flowing through one of the input lines when a person is attempting to mount a lamp on the ballast. Upon detection of the leakage current, the ballast safety circuit impeded an operation of the lamp to thereby dissipate the leakage current whereby the person can safely complete the mounting of the lamp on the ballast.