Low-temperature starting circuit of electrodeless lamp ballast and use method

A technology for starting circuits and electrodeless lamps, which is applied in the use of gas discharge lamps, electric light sources, electrical components, etc., and can solve the problems that electrodeless lamps cannot be normally lit.

Inactive Publication Date: 2012-07-11
上海浪腾电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The low-temperature start-up circuit and usage method of the electrodeless lamp ballast provided by the embodiment of the present invention detects whether the electrodeless lamp is lit and then decides whether to adjust the PFC output voltage, and solves the problem that the electrodeless lamp cannot be normally lit at low temperature

Method used

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  • Low-temperature starting circuit of electrodeless lamp ballast and use method
  • Low-temperature starting circuit of electrodeless lamp ballast and use method
  • Low-temperature starting circuit of electrodeless lamp ballast and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] An embodiment of the present invention provides a low-temperature start-up circuit for an electrodeless lamp ballast, including: an input filter, a power factor correction PFC main power circuit, and a DC / AC inverter circuit, wherein the AC voltage passes through the input filter and the PFC main power circuit to become a DC voltage and enter the DC / AC inverter circuit, the DC / AC inverter circuit converts the DC voltage into an AC voltage and then inputs it to the electrodeless lamp, and the electrodeless lamp The low temperature starting circuit of the ballast also includes an electrodeless lamp detection module and a PFC bus voltage regulating circuit, the input end of the electrodeless lamp detection module is connected with the electrodeless lamp or the output end of the PFC main power circuit, and the electrodeless lamp detection module The output end of the PFC bus voltage regulating circuit is connected to the input end of the PFC bus voltage regulating circuit, a...

Embodiment 2

[0061] Such as image 3 As shown, the low-temperature starting circuit of the electrodeless lamp ballast provided by the embodiment of the present invention includes a PFC bus voltage regulating circuit, a PFC main power circuit, a DC / AC inverter circuit, a PFC bus voltage dividing circuit and an undervoltage detection logic circuit, in:

[0062] When the ballast is powered on for the first time, the PFC bus voltage regulation circuit sends a voltage regulation signal to the PFC main power circuit;

[0063] The PFC main power circuit receives the voltage regulation signal input by the PFC bus voltage regulation circuit, and increases the PFC bus voltage to prepare for the first lighting;

[0064] The DC / AC inverter circuit uses high-frequency switching conversion to invert the high voltage output by the PFC main power circuit from DC to AC, and supplies power to the electrodeless lamp;

[0065] The PFC bus voltage dividing circuit converts the PFC bus voltage of the PFC main...

Embodiment 3

[0082] Such as Figure 6 As shown, the low-temperature start-up circuit of the electrodeless lamp ballast provided by the embodiment of the present invention includes: PFC bus voltage regulation circuit, PFC main power circuit, DC / AC inverter circuit, lamp voltage / current detection circuit and logic comparison circuit, in

[0083] When the ballast is powered on for the first time, the PFC bus voltage regulation circuit sends a voltage regulation signal to the PFC main power circuit;

[0084] The PFC main power circuit receives the voltage regulation signal input by the PFC bus voltage regulation circuit, and increases the PFC bus voltage to prepare for the first lighting;

[0085] The DC / AC inverter circuit uses high-frequency switching conversion to invert the high voltage output by the PFC main power circuit from DC to AC, and supplies power to the electrodeless lamp;

[0086] The lamp voltage / current detection circuit detects the voltage or current of the electrodeless la...

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PUM

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Abstract

The embodiment of the invention discloses a low-temperature starting circuit of electrodeless lamp ballast and a use method. The low-temperature starting circuit comprises an input filter, a power factor correction (PFC) main power circuit, and a direct-current (DC) / alternating-current (AC) inverter circuit and further comprises an electrodeless lamp detection module and a PFC bus voltage-regulating circuit, wherein after detecting that an electrodeless lamp is not turned on or is turned on, the electrodeless lamp detection module sends a comparison signal to the PFC bus voltage-regulating circuit, and the comparison signal is used for indicating whether the electrodeless lamp is turned or not; and after the PFC bus voltage-regulating circuit receives the comparison signal, if the comparison signal indicates that the electrodeless lamp is not turned on, the voltage of a PFC bus is regulated until the electrodeless lamp is turned on, or else, if the comparison signal indicates that the electrodeless lamp is turned on, the PFC bus voltage-regulating circuit recovers the voltage of the PFC bus to an initial value.

Description

technical field [0001] The invention relates to the field of electrodeless lamps, in particular to a low-temperature start-up circuit for an electrodeless lamp ballast and a method for using it. Background technique [0002] The electrodeless electromagnetic induction lamp is referred to as the electrodeless lamp for short. Its advantages include long life, high luminous efficiency, high power factor, stable luminous flux output, high reliability, high color rendering, low harmonic content, low temperature fast start, wide Color temperature range, instant restart, no flicker and no glare. The benefits that the application of electrodeless lamps can bring to users include high efficiency and energy saving, greatly reducing the cost of lamp replacement, and reducing maintenance costs. Electrodeless lamps are considered to be one of the most promising light sources in the future. [0003] The schematic diagram of the structure of the electrodeless lamp ballast is as follows: ...

Claims

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Application Information

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IPC IPC(8): H05B41/28
CPCY02B20/22Y02B20/00
Inventor 张培忠
Owner 上海浪腾电子科技有限公司
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