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DC low voltage power supply four push-pull injection lock power synthesis high pressure sodium lamp

A technology of combining DC low-voltage power supply and injection-locking power, applied in the field of electric light source lighting, can solve the problems of affecting power and unbalance, and achieve the effect of prolonging the service life, stabilizing the light, and avoiding the power imbalance of the device temperature rise and the oscillation frequency change.

Active Publication Date: 2016-11-23
浙江龙鹰光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of consistency in the phase of the nonlinear intermodulation oscillating voltage, it affects the unbalanced power and needs technical improvement

Method used

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  • DC low voltage power supply four push-pull injection lock power synthesis high pressure sodium lamp
  • DC low voltage power supply four push-pull injection lock power synthesis high pressure sodium lamp
  • DC low voltage power supply four push-pull injection lock power synthesis high pressure sodium lamp

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Embodiment Construction

[0012] refer to figure 1 , 2 , 3, 4( image 3 Taking the self-oscillating chip A push-pull inverter A' circuit as an example, and the rest of the circuits are the same), the specific implementation mode and embodiment of the present invention: include a DC low-voltage power supply 11, a high-pressure sodium lamp tube 10, a reference crystal oscillator 13, a frequency divider 12, Self-oscillating chip A1, self-oscillating chip B2, self-oscillating chip C3, self-oscillating chip D4, push-pull inverter A', push-pull inverter B', push-pull inverter C', push-pull inverter D ', adding coupler TB 1 5. Adding coupler TB 2 6. Adding coupler TB 3 7. FM signal generator 8, lamp trigger circuit 9, lamp abnormal current detector 14, wherein the reference crystal oscillator 13 is composed of a quartz crystal resonator, six inverters, resistors and capacitors, and is composed of an inverter IC 1-1 The bias resistor R is connected across the input and output terminals 1 , and connected ...

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Abstract

The invention relates to the technical field of electric light source lighting, in particular to a DC low-voltage power supply four-push-pull injection lock power synthesis high-pressure sodium lamp. Self-oscillating chip A push-pull inverter A' output power transformer T 1 With self-oscillating chip B push-pull inverter B' output power transformer T 2 Feeds into summing coupler TB 1 , self-oscillating chip C push-pull inverter C' output power transformer T 3 With self-oscillating chip D push-pull inverter D' output power transformer T 4 Feeds into summing coupler TB 2 , summing coupler TB 1 with summing coupler TB 2 Feeds into summing coupler TB 3 Power synthesis, boost feeding lamp trigger circuit lamp start, reference crystal oscillator signal is injected into four self-oscillating chips through the frequency divider to lock the phase to stabilize the output power, to avoid excessive temperature rise of the device, oscillation frequency change, power imbalance, light drop, frequency modulation signal The sawtooth signal of the generator is connected to four self-oscillating chips for frequency modulation to suppress light flickering, and the signal of the abnormal current detector of the lamp tube is connected to the SD end of the four self-oscillating chips to protect the power tube. The invention is suitable for lighting occasions of direct current low-voltage power supply high-pressure sodium lamps.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a DC low-voltage power supply four-push-pull injection lock power synthesis high-pressure sodium lamp. Background technique [0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the electric light source of high-pressure sodium lamps, and the oscillation frequency generated is affected by the poor stability of temperature changes and the power is not stable enough, resulting in a decrease in light intensity. Although this electronic ballast has a simple structure, low cost. In order to obtain high-power lighting, the current of the device must be increased, and the power consumption of the oscillating power tube increases sharply and the temperature rises too high, resulting in a change in the oscillation frequency. As a result, the power amplitude of the light changes with the frequency and becomes unbalanced. At the same time,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/292
Inventor 阮树成
Owner 浙江龙鹰光电科技有限公司
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