The main loop includes a three-phase bridge, an inverter module with three IGBT power tubes, a braking circuit and protecting circuits, etc.

At the same time, before the diode bridge rectifier it USES filter circuit with a simple harmonic suppression which can not fulfil the complete harmonic suppression.

A printed circuit board having light emitting diodes and a diode rectifier bridge mounted thereon is retained in a recess formed in the base portion of the light reflector.