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Direct-current low-voltage power supply four-push-pull injection-locking light emitting diode (LED) array lamp

A DC low-voltage power supply and light-emitting diode technology, applied in electric light source, electric lamp circuit layout, light source and other directions, can solve the problems of unbalanced power, inconsistent oscillating voltage phase, etc., and achieve the effect of stabilizing lighting, prolonging service life and improving lighting quality.

Inactive Publication Date: 2014-10-15
唐山宏阔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phases of the power synthesis oscillation voltage are inconsistent, and the nonlinear intermodulation affects the power imbalance, which needs technical improvement

Method used

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  • Direct-current low-voltage power supply four-push-pull injection-locking light emitting diode (LED) array lamp
  • Direct-current low-voltage power supply four-push-pull injection-locking light emitting diode (LED) array lamp
  • Direct-current low-voltage power supply four-push-pull injection-locking light emitting diode (LED) array lamp

Examples

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Embodiment Construction

[0011] Reference figure 1 , 2 , 3, 4 ( image 3 Taking the self-oscillating chip A push-pull inverter A'circuit as an example, the rest of the circuits are the same), the specific implementation and examples of the present invention: including DC low-voltage power supply 11, light-emitting diode LED array lamp 9, reference crystal 12, frequency divider 13. Self-oscillation chip A1, self-oscillation chip B2, self-oscillation chip C3, self-oscillation chip D4, push-pull inverter A′, push-pull inverter B′, push-pull inverter C′, push-pull inverter D′, addition coupler TB 1 5. Adding coupler TB 2 6. Adding coupler TB 3 7. Full-wave rectifier circuit 8. Lamp abnormal current detector 10, in which the reference crystal 12 is composed of a quartz crystal resonator JT, six inverters, resistors and capacitors, and is composed of an inverter IC 1-1 Bias resistor R across input and output 1 , And connect the grounding capacitor C in parallel 1 , C 2 , At the same time, connect the series tr...

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Abstract

The invention relates to the technical field of electric light source illumination and specifically discloses a direct-current low-voltage power supply four-push-pull injection-locking light emitting diode (LED) array lamp. A self-sustained oscillation chip A, an output power transformer T1 of a push-pull inverter A', a self-sustained oscillation chip B, and an output power transformer T2 of a push-pull inverter B' are fed into an addition coupler TB1. A self-sustained oscillation chip C, an output power transformer T3 of a push-pull inverter C', a self-sustained oscillation chip D and an output power transformer T4 of a push-pull inverter D' are fed into an addition coupler TB2. The addition coupler TB1 and the addition coupler TB2 are fed into an addition coupler TB3 for power synthesis. The synthesized power is fed into a lamp tube through a full-wave rectification circuit. Signals of a reference crystal oscillator are injected into four self-sustained oscillation chips through a frequency divider for phase locking and output power stabilizing. Excessive temperature rise of the device, changes of oscillation frequency, imbalanced power and dim light are avoided. Signals of a lamp tube abnormal current detector are accessed to SD ends of the four self-sustained oscillation chips for power tube protection. The LED array lamp is suitably used in large-power light emitting diode LED array lamp illumination occasions.

Description

Technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a direct current low-voltage power supply four-push-pull injection-lock light-emitting diode LED array lamp. Background technique [0002] The prior art electronic transformer usually uses an LC or RC oscillator as the light source of the light-emitting diode LED array lamp, and the generated oscillation frequency is affected by the poor stability of temperature changes and the power is not stable enough, resulting in a decrease in light intensity, although the structure is simple and the cost is low. However, to obtain high-power lighting, the device current will inevitably increase, and the power consumption of the oscillating power tube will increase sharply. At the same time, the high current increases the temperature of the coil and the magnetic permeability decreases, and the magnetic saturation inductance decreases. The impedance tends to zero. The workin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 阮树成
Owner 唐山宏阔科技有限公司
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