Electronic ballast in use for light tunable gas discharge lamp in high intensity

A gas discharge lamp and electronic ballast technology, applied in the field of power electronics, can solve the problems of large capacitance and inductance voltage stress, large capacitance and inductance loss, and high cost, and achieve high operating frequency, increase starting voltage, and low cost. Effect
CN1874638AInactive Publication Date: 2006-12-06ZHEJIANG UNIV
0 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2006-12-06
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention comprises: a main circuit comprised of a low-pass filer rectifying circuit, a power factor calibrating circuit, a bridge type inverter circuit and a filtering resonance circuit; and a control circuit composed of an insulation drive circuit, a starting circuit, a frequency regulating circuit, a start control circuit, and a light changes controlling circuit; setting a capacitor at the output of the inductor in said filter resonance circuit in order to limit the current passing through the switch tube in the bridge type inverter circuit at the time of starting the high intensity gas discharge lamp.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of power electronics, and relates to an electronic ballast for high-intensity gas discharge lamps. Background technique

[0002] High-intensity discharge lamps (HID), including high-pressure mercury lamps, high-pressure sodium lamps, metal halide lamps, xenon lamps, krypton lamps, etc., have become a It is the third-generation light source after incandescent lamps and fluorescent lamps, and it is used as the main light source for green lighting projects. It has the advantages of wide working voltage range, small size, light weight, no flicker, no noise, high efficiency, high luminous efficiency, good lighting effect, long life, easy dimming and intelligent control, high power factor, etc. Electronic ballasts will gradually replace magnetic ballasts.

[0003] Acoustic resonance phenomenon exists in the high frequency operation of gas discharge lamps, which will cause unstable light output,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More