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LED illuminating lamp circuit

A technology of LED lighting and circuits, applied in lighting devices, electric light sources, electrical components, etc., can solve problems such as complex costs and high reliability

Active Publication Date: 2017-05-17
深圳市深大南方实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the prior art such as the LED lighting circuit disclosed by CN202759628U has good performance, it is too complicated and has high cost and low reliability.

Method used

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Embodiment Construction

[0016] The circuit of the embodiment of the present invention is as follows figure 1 As shown, including the power terminal 1 connected to the AC power grid, the LED element combination 2, the AC capacitor 3, the AC iron core coil 4 and the single-phase bridge rectifier 5, the AC capacitor 3 and the AC iron core coil 4, the single-phase bridge rectifier The AC input end of 5 is connected to terminal 1 in series, and the LED element combination 2 is connected to the DC output end of single-phase bridge rectifier 5 . The DC output end of the single-phase bridge rectifier 5 is also connected in parallel with a filter capacitor 6 of appropriate capacity. When the requirement for the double power frequency flicker of the lamp is not high, the filter capacitor may not be used.

[0017] The embodiment of the present invention is designed as follows: the rated input voltage is 220V, and the input power is 13W; the components are designed as follows:

[0018] ——The LED component comb...

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PUM

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Abstract

Disclosed is an LED illuminating lamp circuit. The LED illuminating lamp circuit comprises a single-phase alternating current power supply and an LED element combination; the LED illuminating lamp circuit is characterized by also comprising an alternating current capacitor, an alternating current iron core coil and a single phase bridge type rectifying circuit; the alternating current input ends of the alternating current capacitor, the alternating current iron core coil and the single phase bridge type rectifying circuit are connected in series and then connected to the single-phase alternating current power supply; the LED element combination is connected to the direct current output end of the single phase bridge type rectifying circuit; the capacitive reactance of the alternating current capacitor is greater than the inductive reactance of the alternating current iron core coil; and the iron core of the alternating current iron core coil works in a section where the magnetic conductivity of the magnetic material is decreased along with increasing of the magnetic field strength. By virtue of the design, fluctuation of the current along with the power supply voltage can be effectively suppressed; and compared with the prior art, the structure is greatly simplified, so that the cost can be obviously lowered and the reliability can be improved.

Description

technical field [0001] The invention relates to an LED lighting circuit; in the international patent classification table, it belongs to H05B37 / 02. Background technique [0002] Although the prior art such as the LED lighting circuit disclosed in CN202759628U has good performance, it is too complicated, has high cost and low reliability. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is: to propose an LED lighting circuit, which can significantly reduce cost and improve reliability compared with the prior art, but still has better performance. [0004] The technical solution of the present invention to solve the technical problem is that an LED lighting circuit includes a combination of a single-phase AC power supply and an LED element; it is characterized in that it also includes an AC capacitor, an AC iron core coil and a single-phase bridge rectifier circuit; the The AC capacitor, the AC iron core coil, and the AC input en...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00
Inventor 叶露微
Owner 深圳市深大南方实业发展有限公司