BALLAST

摘要

A dimming interface for translating the conduction pulse width of a signal produced by a triac dimmer into a proportional rectified average voltage serving as a dimming signal. The dimming signal is supplied as an input to an IC driver in controlling the level of lamp illumination. The proportional rectified average voltage can be converted into a signal representing a duty cycle whereby variation in the main line voltage does not affect the dimming signal.