Control circuit used in circuit of high strength gas discharge lamp

A gas discharge lamp, high-intensity technology, applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve the problems of high cost, special circuit complexity, etc.

Inactive Publication Date: 2005-06-15
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional method of controlling the working power of HID lamps is generally to use microprocessor chips, but the cost is relatively high
Another measure is to limit the current of the HID lamp circuit by designing a special circuit to control the working power of the HID lamp, but this special circuit is usually more complicated

Method used

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  • Control circuit used in circuit of high strength gas discharge lamp
  • Control circuit used in circuit of high strength gas discharge lamp
  • Control circuit used in circuit of high strength gas discharge lamp

Examples

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Embodiment Construction

[0018] figure 1 is a block diagram of the regulating circuit 105 used in the HID lamp circuit 100 according to one embodiment of the present invention. The control circuit 105 includes a monitoring circuit 110 and a control device 120 , wherein the control device 120 includes a comparison device 130 .

[0019] During the working process of the HID lamp, the monitoring device 110 monitors the working power of the traditional HID lamp circuit 100 and outputs a monitoring signal to the control device 120 . The comparison device 130 in the control device 120 compares the input monitoring signal with a preset signal, and adjusts the state of the HID lamp circuit accordingly according to the comparison result. The preset reference signal can include one or more reference signal values ​​as required, such as including a critical value A (hereinafter referred to as the preset power signal) for a HID lamp circuit that needs to be adjusted for power, or including a HID lamp circuit tha...

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PUM

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Abstract

The invention discloses adjust and control circuit in use for circuit of high intensity discharge (HID) lamp, and for controlling ascend of operating power of HID lamp. When operating power of HID lamp exceeds setting value in advance, the invention makes circuit of HID lamp fall into protection state. Through monitoring device, the invention monitors circuit of HID lamp. Comparing monitored signal with power signal setup in advance as well as safety signal setup in advance, the invention adjusts operating state of HID lamp circuit. That is to say the invention adjusts power of lamp circuit or makes lamp circuit enter into protection state.

Description

technical field [0001] The invention relates to a lighting circuit, in particular to a control circuit for a high-intensity gas discharge lamp. Background technique [0002] High-intensity discharge lamps (HID lamps, High Intensity Discharge lamps), such as high-pressure sodium lamps, are favored by people because of their long life and high luminous efficacy, and are widely used in flood lighting and road lighting. [0003] The HID lamp causes the filling material in the discharge tube to emit light through the arc discharge that occurs between the two electrodes of the discharge lamp. During the use of HID lamps, some chemical reactions will occur between the components in the discharge tube (such as electrode emission mixture, tube wall materials, sealing materials, etc.), and the electrodes are also constantly worn out, resulting in the lower operating voltage of the HID lamp. continuously increased during the period of use. [0004] Under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/288H05B41/36
Inventor 丁九良
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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