| 摘要 |
An electronic ballast including a dimming circuit for use with fluorescent lamps. An electromagnet located adjacent to a dual toroid coil transformer employed as part of a inverter circuit is used to control the saturation of the toroid coil to the control the on and off times of transistors included in the inverter circuitry, to limit saturation thereby controlling the intensity of the light emitted from the fluorescent lamps.
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