A constant current drive intelligent lamp

Abstract

The present invention provides a constant current drive intelligent lamp, which includes an input module, a constant current drive control module, an over-current protection circuit module, a first detection module, a temperature compensation module, a second detection module and an output module; the input module and the One end of the constant current drive control module is connected, the other end of the constant current drive control module is connected to one end of the over-current protection circuit module, and the other end of the over-current protection circuit module is connected to the output end; the constant-current drive control module It is also connected to one end of the first detection module, the other end of the first detection module is connected to one end of the temperature compensation module, the other end of the temperature compensation module is connected to one end of the second detection module, and the second detection module The other end is connected to the output module. The invention has simple structure and low cost, and can effectively control the large drift of the voltage due to the influence of temperature, thereby causing the change of the feedback signal, so as to ensure the uniform and stable electrical performance of the lamp.

Description

technical field [0001] The invention belongs to the field of smart home design, and in particular relates to a constant current driven smart lamp. Background technique [0002] Since LED is a semiconductor device with sensitive characteristics and has negative temperature characteristics, it needs to be in a stable working state and protected during the application process, thus generating the concept of driving. LED constant current drive power supply is a voltage converter that converts the power supply into a specific voltage and current to drive LED light. Usually: the input of LED drive power supply includes high-voltage power frequency AC, low-voltage DC, high-voltage DC, low-voltage high-frequency AC, etc. . The output of the LED drive power supply is mostly a constant current source that can change the voltage with the change of the LED forward voltage drop value. The function of using constant current for LED drive power is that LED is a nonlinear device, and a sm...

AI Technical Summary

Problems solved by technology

The reason is that the magnification of the triode and the voltage between the junctions will have a large drift due to the influence of temperature. After the power is turned on, the temperature will rise, causing the change of the feedback signal, and finally causing the output current to drop significantly.

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