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A lamp current detection circuit for electrodeless lamp

A technology of current detection circuit and electrodeless lamp, which is applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve the problems of large volume and high cost, and achieve the effect of small volume and low cost

Inactive Publication Date: 2016-09-14
芜湖风云能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires custom chips and the use of current transformers, which are bulky and costly

Method used

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  • A lamp current detection circuit for electrodeless lamp
  • A lamp current detection circuit for electrodeless lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The input terminal a of the lamp current detection circuit is connected to one end of the first capacitor C1 and the first resistor R1, the other end of the first capacitor C1 is grounded, the other end of the first resistor R1 is connected to one end of the second capacitor C2 and the second resistor R2 One end is connected, the other end of the second capacitor C2 is grounded, the other end of the second resistor is connected to one end of the third capacitor C3, the other end of the third capacitor C3 is connected to one end of the third resistor R3 and the fourth resistor R4, and the third The other end of the resistor R3 is grounded, one end of the fourth resistor R4 is connected to one end of the fifth resistor R5, the output end b of the lamp current detection circuit, the cathode of the voltage regulator tube Z1, and the fourth capacitor C4; the other end of the fifth resistor R5 , the anode of the regulator tube Z1 and the other end of the fourth capacitor C4 ar...

Embodiment 2

[0018] The input terminal a of the lamp current detection circuit is connected to one end of the first capacitor C1 and the first resistor R1, the other end of the first capacitor C1 is grounded, the other end of the first resistor R1 is connected to one end of the second capacitor C2 and the third capacitor C3 One end is connected, the other end of the second capacitor C2 is grounded, the other end of the third capacitor C3 is connected to one end of the third resistor R3 and the fourth resistor R4, the other end of the third resistor R3 is grounded, and one end of the fourth resistor R4 is connected to the fourth resistor R4. One end of the fifth resistor R5, the output end b of the lamp current detection circuit, the cathode of the voltage regulator tube Z1 and the fourth capacitor C4 are connected; the other end of the fifth resistor R5, the anode of the voltage regulator tube Z1 and the other end of the fourth capacitor C4 grounded.

[0019] The theoretical proof of the i...

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PUM

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Abstract

The invention discloses a lamp current detecting circuit for an electrodeless lamp. The lamp current detecting circuit for the electrodeless lamp comprises an input end connected with a lamp tube and an output end connected to a control chip. Lamp currents of the electrodeless lamp are converted into voltage signals which are in direct proportion to the lamp currents for the control chip to use. Through the adoption of the structure, the lamp current detecting circuit for the electrodeless lamp has the advantages that the lamp current detecting circuit for the electrodeless lamp is applied to an electronic ballast of the electrodeless lamp, and lamp current signals are converted into the voltage signals which are easy to process by the control chip; a current transformer is not needed, and the size is small; the control chip is a commercially available common chip rather than a customized chip, and cost is low.

Description

technical field [0001] The invention relates to the technical field of electronic ballasts for electrodeless lamps, in particular to a lamp current detection circuit for electrodeless lamps. Background technique [0002] Traditional electronic ballasts for electrodeless lamps use current transformers to detect lamp current, and need to use amplifiers for subsequent processing, or use custom chips for processing. For this solution, the supporting control chip is HY4501 customized by Hongyuan. This solution requires custom chips and the use of current transformers, which are bulky and costly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a low-cost electrodeless lamp current detection circuit that converts the lamp current of the electrodeless lamp into a voltage during detection to facilitate abnormal protection of the lamp current. [0004] In order to solve the above technical problems, the technical solutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/285
Inventor 张小双
Owner 芜湖风云能源科技有限公司