LED lamp driving circuit capable of improving PF value

Abstract

The invention discloses an LED lamp driving circuit capable of improving a PF value. The LED lamp driving circuit comprises a rectification module, a first isolation module, a second isolation module,a driving module, an auxiliary power supply module and an intelligent module, the rectification module is connected with the first isolation module and the second isolation module, the first isolation module is connected with the driving module, the second isolation module is connected with the auxiliary power supply module, and the auxiliary power supply module is connected with the driving module through the intelligent module. The isolation module is arranged, an original filter circuit is divided into two parts to be placed in the driving module and the auxiliary power supply module respectively, the rectification amplitude is small, operation is easy and convenient, and the rectification cost is low; and meanwhile, due to the existence of the isolation module, the change of the driving module and the auxiliary power supply module does not influence the change of the input circuit, so that the PF value of the whole circuit is improved.

Description

technical field [0001] The invention relates to the technical field of drive circuits, in particular to an LED lamp drive circuit with improved PF value. Background technique [0002] The PF value (power factor) refers to the ratio of the average power of the AC circuit to the apparent power. Under a certain voltage and power of the user's electrical equipment, the higher the value, the better the benefit, and the more fully the power generation equipment can be used. For a long time, the requirements for low-power electrical appliances and bulbs in lighting products have been relatively low, or even not required, so most circuit designs do not take into account the requirements for PF. However, with the increasing popularity of the concept of environmental protection and energy saving, various markets have made mandatory regulations on PF from the standard. However, if the PF value of the existing circuit needs to be improved, the circuit must be greatly modified, which g...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of low PF value and high rectification cost of the original LED lamp driving circuit; it provides an LED lamp driving circuit with improved PF value, which only needs to be fine-tuned on the basis of the original LED lamp driving circuit, That can greatly increase the PF value

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