High power linear constant current driving LED lamp module

Abstract

The invention provides a high power linear constant current driving LED lamp module with small pressure drop and low line loss, comprising a rectifier bridge provided with a first diode, a second diode, a third diode and a fourth diode which are connected end to end, wherein a first node is arranged between the fourth diode and the first diode; a second node is arranged between the first diode and the second diode; a third node is arranged between the second diode and the third diode; a fourth node is arranged between the third diode and the fourth diode; the third node is in connection with a zero line terminal; the fourth node is grounding; a buck capacitor located between a live wire terminal and the first node; a linear constant current chip provided with a first binding post, a second binding post and a third binding post, wherein the second binding post is in connection with the fourth node; LED beads located between the second node and the first binding post; an anti-surge capacitor located between the first binding post and the fourth node; and a constant current value adjusting resistor located between the third binding post and the fourth node.

Description

technical field [0001] The invention relates to the field of lamps, in particular to a high-power linear constant current drive LED lamp module. Background technique [0002] LED light, or light-emitting diode, is a solid-state semiconductor device that converts electrical energy into visible light. Due to its high luminous efficiency, it is more and more widely used in the field of advertising characters. At present, most of the high-voltage LED lamp modules on the market adopt the design of RC step-down drive scheme. The RC step-down drive scheme has unstable factors, and the safety cannot be guaranteed. In the no-load state, the full-load voltage changes greatly, which depends on The voltage regulator circuit bears the burden, resulting in large no-load power consumption, which is not conducive to energy saving and environmental protection, and is not isolated from the mains, and it is easy to burn the circuit when it is powered on. Contents of the invention [0003] T...

AI Technical Summary

Problems solved by technology

At present, most of the high-voltage LED lamp modules on the market adopt the design of RC step-down drive scheme. The RC step-down drive scheme has unstable factors, and the safety cannot be guaranteed. In the no-load state, the full-load voltage changes greatly, which depends on The voltage regulator circuit bears the burden, resulting in large no-load power consumption, which is not conducive to energy saving and environmental protection, and is not isolated from the mains, and it is easy to burn the circuit when it is powered on.

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