LED sine pulse type narrow pulse drive power supply

A technology of driving power supply and narrow pulse, which is applied in the field of integrated circuits, can solve problems such as the decrease of light efficiency, and achieve the effects of constant current, small wave and small volume

Inactive Publication Date: 2014-05-07
樊远征 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a LED narrow pulse drive power supply, which solves the problem that the above-mentioned LED simple strong and narrow pulse drive increases the "visual brightness" while the light efficiency decreases, and brings new energy saving, lower junction temperature and higher temperature to LED. life

Method used

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  • LED sine pulse type narrow pulse drive power supply
  • LED sine pulse type narrow pulse drive power supply

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Embodiment Construction

[0011] 1) by figure 1 It can be seen that a kind of LED sinusoidal pulsation type narrow pulse drive power supply of the present invention is characterized in that the L end and the N end of the AC220V alternating current voltage are respectively connected with the rectifier bridge IC 1 The AC1 terminal and AC2 terminal are connected, the rectifier bridge IC 1 The DC1+ terminal and the resistor R 1 one end, and the light-emitting diode led 1 Anode phase connection, bridge rectifier IC 1 The DC1-terminal and the capacitor C 1 One end of the regulator tube W 1 anode, PWM controller IC 2 GND1 terminal, capacitor C 2 One end and the resistor R 2 connected at one end, the resistor R 1 the other end of the diode with the D 1 The anode of the diode is connected to the D 1 cathode with PWM controller IC 2 Vcc1 terminal, capacitance C 1 The other end of the regulator tube W 1 The cathode of the PWM controller is connected to the IC 2 Out1 terminal and pow...

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Abstract

The invention provides an LED sine pulse type narrow pulse drive power supply. The LED sine pulse type narrow pulse drive power supply is characterized in that power switch tube V1(V2) is adopted to chop a current to be with sine pulse voltage, the current is converted into a sine pulse type narrow pulse current to drive an LED, and 'visual brightness' is greatly increased on the basis of keeping high photosynthetic efficiency. The LED sine pulse type narrow pulse drive power supply has the advantages that the LED achieves that energy is saved by 35%, junction temperature is reduced by 35%, and the service life is prolonged by one to two times. Furthermore, a circuit is simple and efficiency, under the condition of not using a filter circuit, a PFC circuit and an electrolytic capacitor, current nonlinearity is small, harmonic waves are small, the current is constant, a power factor is larger than 0.9, the size is small, and cost is low.

Description

technical field [0001] The invention belongs to the field of integrated circuits, and in particular relates to a sinusoidal pulse narrow pulse driving power supply for LEDs. Background technique [0002] The driving mode of LED driving power not only affects the efficiency of the driving power itself, but also affects the light efficiency, thermal efficiency and lifespan of LED lamps. At present, the more advanced LED drive power supply has three types of driving methods: the first type is the LED constant current drive power supply based on the switching power supply, which has high harmonics and low power factor caused by rectification and filtering, and the conversion rate of multiple circuit links is low and the cost is low. High, and short life of electrolytic capacitors; the second category is LED wide pulse power supply, which also has high harmonics and low power factor caused by rectification and filtering, low conversion rate, high cost of multiple circuit links, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 樊远征
Owner 樊远征
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