Direct-current power supply driving device for fluorescent lamp

A technology of DC power supply and fluorescent lamp, which is applied in the direction of electric lamp circuit layout, light source, electric light source, etc., and can solve problems such as loss

Inactive Publication Date: 2014-01-08
黄月华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now people are more and more dependent on power supply. Once the 220V AC power supply is inte...

Method used

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  • Direct-current power supply driving device for fluorescent lamp

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Embodiment Construction

[0013] According to the working principle diagram and description of the circuit of the fluorescent lamp DC power supply drive device shown in the accompanying drawings, and according to the connection relationship between the components in each part of the circuit described in the summary of the invention, and the technical parameter requirements of the components described in the implementation mode The present invention can be realized by implementing the main points of making the circuit, and the related technologies of the present invention will be further described below in conjunction with the embodiments.

[0014] Selection of components and technical parameters

[0015] The resistance value of resistor R1 is 10KΩ; the resistance value of resistor R2 is 0.62Ω, and the power is 2W;

[0016] VT1 and VT3 are NPN transistors, the selected model is 2SC9013, and the required amplification factor β≥150;

[0017] VT2 is an enhanced N-channel field effect transistor, and the s...

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PUM

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Abstract

The invention relates to a direct-current power supply driving device for a fluorescent lamp. The direct-current power supply driving device is characterized by comprising a 12V direct-current power supply, an oscillating auxiliary circuit, a field effect transistor driving circuit and a boosting and illuminating circuit, wherein the oscillating auxiliary circuit consists of an NPN type transistor VT1, a resistor R1, an NPN type transistor VT3 and a programmable unijunction transistor VT4; the model of the programmable unijunction transistor VT4 is 2N6027; the drain of an enhanced N-channel field effect transistor VT2 in the field effect transistor driving circuit is connected with one end of a primary coil L1 of a transformer T; the other end of the primary coil L1 of the transformer T is connected with the positive electrode VCC of a circuit; the grid of the enhanced N-channel field effect transistor VT2 is connected with the emitter of the NPN type transistor VT1; the drain of the enhanced N-channel field effect transistor VT2 is connected with circuit ground GND through a resistor R2; the boosting and illuminating circuit consists of a boosting coil L2 of the transformer T, a capacitor C1 and a fluorescent lamp RGD.

Description

technical field [0001] The invention belongs to the technical field of electronics and emergency lighting, and relates to a fluorescent lamp DC power drive device. Background technique [0002] Now people are more and more dependent on power supply. Once the 220V AC power supply is interrupted, it will have a great impact on normal work, life and student learning, and even cause some losses. The fluorescent lamp DC power drive device is a kind of backup lighting equipment independent of the 220V AC power grid. Commonly used emergency lighting equipment is mostly maintenance-free batteries as the DC power supply. [0003] The fluorescent lamp DC power drive device of the present invention can meet the requirements of emergency lighting when the power supply line is cut off for a short time, and is also suitable for emergency lighting or fire emergency lighting in various small public places. [0004] The relevant technical content involved in the implementation of the direct...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 黄月华
Owner 黄月华
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