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Electronic amperite and its IC power supply method

A technology of electronic ballast and power supply method, which is applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve the problems of low power factor preheating of electronic ballasts, prevent low power factor phenomena, and avoid no-load operation , Prevent the effect of burning circuit components

Inactive Publication Date: 2006-04-26
XIAMEN TOPSTAR LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The half-bridge drive circuit starts first, and then the power factor correction circuit starts, and the electronic ballast will have a low power factor preheating phenomenon.

Method used

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  • Electronic amperite and its IC power supply method
  • Electronic amperite and its IC power supply method
  • Electronic amperite and its IC power supply method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A power supply method for an electronic ballast IC in this embodiment, the method is as follows: sampling in the load oscillation circuit 4 through the sampling terminal of the power sampling circuit 6, and passing the sampled electrical signal source through the power sampling circuit The power supply end of 6 supplies power to the integrated chip in the main circuit.

[0047] The sampling end of the power supply sampling circuit 6 samples at the electrical connection between the second end of the load 5 and the DC blocking capacitor C15, and passes the voltage of the DC blocking capacitor C15 through the resistor R26, the resistor R25, the capacitor C17, the diode D7 and the voltage regulator tube DZ1 Energy is stored on the first energy storage capacitor C8; the first energy storage capacitor C8 supplies power to the first integrated chip L6574 in the oscillation drive circuit.

[0048] The power supply circuit 7 of the electronic ballast IC has an input terminal and...

Embodiment 2

[0080] The difference between the second embodiment and the first embodiment is that: Figure 5 As shown, the method is: carry out sampling in the load oscillation circuit 4 through the sampling terminal of the power sampling circuit 6, and supply the integrated chip in the main circuit with the sampled electrical signal source through the power supply terminal of the power sampling circuit 6.

[0081] The sampling end of the power supply sampling circuit 6 samples at the electrical connection between the second end of the load 5 and the DC blocking capacitor C15, and passes the voltage of the DC blocking capacitor C15 through the resistor R26, the resistor R25, the capacitor C17, the diode D7 and the regulator DZ1 Energy is stored in the first energy storage capacitor C8; the first energy storage capacitor C8 supplies power to the second integrated chip L6561 in the power factor correction circuit 2.

[0082] The power supply circuit 7 of the electronic ballast IC has an inpu...

Embodiment 3

[0085] The third embodiment differs from the first embodiment in that: Image 6 As shown, the method is: carry out sampling in the load oscillation circuit 4 through the sampling terminal of the power sampling circuit 6, and supply the integrated chip in the main circuit with the sampled electrical signal source through the power supply terminal of the power sampling circuit 6.

[0086]The sampling end of the power supply sampling circuit 6 samples at the electrical connection between the second end of the load 5 and the DC blocking capacitor C15, and passes the voltage of the DC blocking capacitor C15 through the resistor R26, the resistor R25, the capacitor C17, the diode D7 and the voltage regulator tube DZ1 Energy is stored on the first energy storage capacitor C8; the first energy storage capacitor C8 supplies power to the first integrated chip L6574 in the oscillation drive circuit.

[0087] The sampling end of the power supply sampling circuit 6 samples at the electrica...

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PUM

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Abstract

The invention discloses a power supply method for electronic ballast and its IC, which comprises: sampling on load oscillating circuit by sample circuit end, and supplying power to the IC with sampled electric signal by power supply end of power sample circuit. Wherein, the main circuit of the electronic ballast comprises a rectification filter circuit, a power factor correction circuit, and a oscillation drive circuit; the sample end and power supply end of the sample circuit connect with load oscillating circuit and IC of main circuit respectively. This invention can prevent working on when no load and burning element.

Description

technical field [0001] The invention relates to a lamp circuit device and an IC power supply method, in particular to an electronic ballast and an IC power supply method. Background technique [0002] The power supply method of the IC of the existing electronic ballast is: the power supply circuit is electrically connected in the oscillation drive circuit, and the first integrated chip IC1 in the oscillation drive circuit is powered through the power supply circuit and the second integrated chip IC1 in the power factor correction circuit Chip IC2 power supply. [0003] Existing electronic ballasts such as figure 1 As shown, an electronic ballast includes: [0004] A rectifying and filtering circuit 1', which suppresses and blocks electromagnetic interference of the power supply, and performs AC-DC conversion on the power supply, and the input terminal of the rectifying and filtering circuit 1' is electrically connected to the output terminal of the power supply; [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/26H05B41/14
CPCH05B41/2828Y02B20/00
Inventor 李智国陈国林
Owner XIAMEN TOPSTAR LIGHTING