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High-frequency feedback circuit

A feedback circuit and high-frequency technology, which is applied in the field of lighting lamps, can solve problems such as volume and cost constraints, application capacity problems, etc., and achieve the effect of solving high-frequency factor problems

Inactive Publication Date: 2012-06-27
江西宝迪光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first diode D1 and the second diode D2 also have the problem of application capacity. In high-power applications, devices with large capacity must be selected, which will be limited in size and cost.

Method used

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Embodiment Construction

[0009] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0010] Depend on figure 2 It can be seen that the present invention includes: a rectifier bridge whose input end is connected to the mains, and the output end of the rectifier bridge is connected to a first circuit; the first circuit includes: after the first capacitor C1 and the second capacitor C2 are connected in series, the third electrolytic The capacitor C3 and the third diode D3 are connected in series and the fourth electrolytic capacitor C4 and the fourth diode D4 are connected in series to the two output ends of the rectifier bridge respectively; the anode of the third electrolytic capacitor C3 and the fourth diode The negative pole of D4 is connected to the positive output terminal of the rectifier bridge, the positive ...

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Abstract

The invention relates to illuminating lamp, in particular to a high frequency feedback circuit in high-power 8U, 9U, 12U and 16U energy-saving lamps used for illuminating a factory. The circuit comprises a plurality of high frequency feedback passive high power factor circuits in parallel connection. The circuit has the advantage of ensuring that each apparatus works within an allowed range and solving the problem of the high frequency factor of the high frequency feedback circuit in the high power energy-saving lamp used for illuminating the factory.

Description

technical field [0001] The invention relates to lighting lamps, in particular to a high-frequency feedback circuit used in high-power 8U, 9U, 12U and 16U energy-saving lamps for factory lighting. Background technique [0002] In the lighting industry, high power factor electronic rectifiers have two high power factor circuit structures, one is a passive high power factor circuit, and the other is an active high power factor circuit. Generally, active high power factor circuits are used for larger power, and its disadvantage is that the number of components is large and the cost is high. Passive circuits are generally used in lower power such as below 100W, and its advantage is that the number of components is small and the cost is low. Its basic principle is as follows: figure 1 It can be seen that the third electrolytic capacitor C3 and the fourth electrolytic capacitor C4 contain relatively large high-frequency charge and discharge currents, and the self-heating is relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/282
Inventor 李峰
Owner 江西宝迪光电科技有限公司