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Circuit capable of solving problem of high-voltage linear driving strobing

A linear drive, high-voltage line technology, applied in the direction of electric lamp circuit layout, electric light source, lighting devices, etc., can solve the problem of flickering of LED lamps, achieve the effect of simple circuit connection and solve the problem of flickering

Inactive Publication Date: 2014-07-02
广州瀚富新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems existing in the prior art, especially to solve the problem of stroboscopic flickering in LED lamps using a high-voltage linear constant current drive IC scheme.

Method used

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  • Circuit capable of solving problem of high-voltage linear driving strobing
  • Circuit capable of solving problem of high-voltage linear driving strobing

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Embodiment

[0018] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention discloses a circuit for solving high-voltage linear constant-current drive strobe; the circuit includes a rectifier circuit, a high-voltage linear constant-current drive IC circuit, an LED light string, and a capacitor charging and discharging circuit; the rectifier circuit will directly input the AC voltage The signal is converted into a pulsating DC signal; the high-voltage linear constant current drive IC circuit converts the pulsating DC signal into a voltage suitable for each segment of the LED, and provides a suitable constant current for the LED light-emitting diode; the capacitor charging and discharging circuit includes a capacitor charging circuit and a capacitor Discharge circuit, when the high-voltage linear constant current drive IC circuit is turned on, it charges the ca...

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Abstract

The invention discloses a circuit capable of solving the problem of strobing of an LED high-voltage linear constant-current driving scheme. The circuit comprises a rectifying circuit body, a high-voltage linear constant-current driving IC body, an LED lamp string and a capacitor charging and discharging circuit body. The rectifying circuit body converts directly-input alternating-current voltage signals into pulse direct-current signals. The high-voltage linear constant-current driving IC body converts the pulse direct-current signals into voltage applicable to each segment of LEDs in a sectional mode and proper constant currents are provided for the LEDs. The LED lamp string comprises the LEDs and an isolating diode. The capacitor charging and discharging circuit body comprises a capacitor charging circuit and a capacitor discharging circuit. When the high-voltage linear constant-current IC body is connected, a capacitor is charged. When the high-voltage linear constant-current driving IC body is disconnected, the capacitor discharges to provide energy for the LEDs connected with the capacitor in parallel. Thus, it can be guaranteed that each segment of the LEDs is always turned on in the whole input voltage cycle, and the whole circuit solves the problem of strobing of an LED device on the condition that the input power factor and harmonic waves are not affected.

Description

technical field [0001] The invention relates to the field of LED lighting drive circuit design, in particular to a circuit for solving high-voltage linear drive strobe. Background technique [0002] Light-emitting diode (LED) solid-state light source has the advantages of high luminous efficiency, environmental protection, and long life, and is known as the fifth-generation lighting source. Due to the high efficiency and good energy-saving effect of LED lamps, LED lamps have gradually replaced white light lamps, and LED lamps have begun to mature. [0003] Theoretically, the service life of LED is more than 100,000 hours, but in the actual useful process, because the LED adopts the traditional switching power supply drive mode, the life of the LED lamp is mostly less than 10,000 hours due to the limitation of the low life of the internal electrolytic capacitor. , seriously restricting the development of LED products. [0004] At present, in order to solve the bottleneck pr...

Claims

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Application Information

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IPC IPC(8): H05B37/00
Inventor 徐淑红
Owner 广州瀚富新材料科技有限公司
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