China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

High pressure sodium ballasts,metal halideelectronic ballasts, which comprises a half-bridge inverter circuit, the bi-directional self-auxiliary power supply circuit, the power output circuit, further comprising a full bridge rectifier circuit and the high-frequency filter circuit, a power factor correction circuit, abnormal protectioncircuit, pulse trigger circuit. The entire circuit to achieve low power instead of high-power, low-cost instead of high-priced. Taken by the two-way self-contained circuit, the ripple has been very small, and increase the power factor correction circuit, so that the total current distortion is greatly reduced, a power factor of 0.99 or more can be obtained, the third harmonic in 9% or less, the lamp current crest ratio is much less than 1.7; abnormal protection circuit lockable half-bridge inverter circuit is no longer an exception is encountered, until troubleshooting, this protection circuit high reliability, allows open circuit, short-circuit, overvoltage, overcurrent protection, and without damaging any components of the main circuit.