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Power supplier of fluorescent lamp

A technology for power supplies and fluorescent lamps, which is applied in the direction of light sources, electric light sources, electrical components, etc., and can solve the problems of limited dimming range and narrow working range

Inactive Publication Date: 2014-03-19
SUZHOU BATELAB MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, voltage mode regulation limits the range of dimming, so this lamp has a narrow operating range

Method used

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  • Power supplier of fluorescent lamp
  • Power supplier of fluorescent lamp
  • Power supplier of fluorescent lamp

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0037] figure 1 The power supply and control circuit of the fluorescent lamp in the present invention are shown.

[0038] like figure 1 As shown, an input DC power source 35 provides power for the circuit. The power supply 35 can be any DC source. For example, in a portable computer, the power source 35 may be a NiCd or NiMH battery capable of supplying 3-5 volts. Alternatively, if the circuit of the present invention is used in a car dashboard, the power source 35 can be a 12-14 volt car battery and power supply. Likewise, fluorescent lamp 15 may be any form of fluorescent lamp. For example, in the lighting of a portable computer display, fluorescent lamp 15 may be a cold or hot cathode fluorescent lamp.

[0039] The input DC power supply 35 provides a low DC voltage to the voltage stabilizing circuit 25 (at terminal 27) and the high voltage frequency converter 20 (at terminal 21). Regulator circuit 25 can be a linear or switching regulator, but for maximum efficiency s...

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PUM

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Abstract

The invention provides a power supplier of a fluorescent lamp, and provides the power supplier and a control circuit of the fluorescent lamp so that intensity of the lamp can be adjusted, and thus illumination of the lamp can be realized under the basically constant intensity along with growth of use time or fluctuation of power supply voltage.

Description

Technical field: [0001] The invention relates to a fluorescent lamp power supply. More particularly, the present invention relates to a fluorescent lamp power supply and control circuit, which can make the lamp illuminate at a substantially constant intensity with the growth of use time or the fluctuation of the power supply voltage, and it can also make the lamp illuminate at a selected The light can be continuously and smoothly adjusted within a certain range of intensity, basically from fully closed to fully open, if desired. Background technique: [0002] Fluorescent lamps are widely used in fields requiring high visible light efficiency and a wide area. For example, portable computers, such as laptops and notebooks, use fluorescent lamps as backlights or sidelights for liquid crystal display screens to improve display contrast and brightness. Fluorescent lamps are also used to illuminate car dashboards and are being considered for use in battery-operated backup emerge...

Claims

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Application Information

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IPC IPC(8): H05B41/26H05B41/39
Inventor 不公告发明人
Owner SUZHOU BATELAB MICROELECTRONICS