| 摘要 |
A lamp control system includes at least one lamp structure; comprising: a lamp body; a ballast connected to the lamp body; the ballast including: a first stage for converting AC current into DC current and boosting of voltage; a buck DC-DC converter; a transistor of the buck DC-DC converter having an input end; a PWM controller being installed between an output end of the lamp body and the input end of the transistor; a frequency controllable oscillator being connected to the PWM controller and an oscillation controlling processor being connected to the frequency controller oscillator for generating instructions to change the oscillation frequency of the oscillator and thus to adjust the modulation frequency of the PWM controller; sensors about voltages, currents, and illuminations are installed for light strength control, temperature control, auto-turning on and off of the HID lamp, power control and time and illumination control. |
