Multiplexed output voltage-stabilized source based blue light LED lamp protection system

Abstract

The invention discloses a multiplexed output voltage-stabilized source based blue light LED lamp protection system. The multiplexed output voltage-stabilized source based blue light LED lamp protection system mainly consists of a gate drive circuit and a logic control circuit and is characterized by further comprising a power amplifier P1, a power amplifier P2, a pulse comparer U1, a pulse comparer U2, a field-effect tube MOS1, a field-effect tube MOS2, a field-effect tube MOS3, a field-effect tube MOS4, an oscillator and the like, wherein the power amplifier P1 and the power amplifier P2 are connected with the logic control circuit, the pulse comparer U1 and the pulse comparer U2 are connected with the logic control circuit, gates of the field-effect tube MOS1, the field-effect tube MOS2, the field-effect tube MOS3 and the field-effect tube MOS4 are connected with the gate drive circuit, and the oscillator is connected between the negative pole input end of the pulse comparer U1 and the negative pole input end of the pulse comparer U2. The multiplexed output voltage-stabilized source based blue light LED lamp protection system has short-circuit protection, overvoltage protection and open circuit protection functions, and power consumption is low and is only 1 / 3 of the power consumption of a traditional protection circuit. In addition, the multiplexed output voltage-stabilized source based blue light LED lamp protection system is provided with a multiplexed output voltage-stabilized source, so that the electricity demand of the protection circuit can be ensured, external electromagnetic interference can be effectively avoided, and control flexibility and accuracy are improved.

Description

technical field [0001] The invention relates to an LED protection circuit, in particular to a blue LED lamp protection system based on a multi-channel output voltage stabilized power supply. Background technique [0002] At present, due to the characteristics of low energy consumption, long service life, safety and environmental protection, LED lamps have become one of the mainstream products for people's living lighting. Since LED lamps are different from traditional incandescent lamps, they need to be driven by a dedicated drive circuit, so there are various protection systems on the market to prevent the drive system from being interfered by internal or external adverse factors. [0003] Although most of these protection systems have short-circuit protection functions and overheat protection functions, the structures of these protection systems are often relatively complicated, and their maintenance is relatively difficult. At the same time, the energy consumption of the...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex structure, high energy consumption, and poor overall protection in the current LED lamp protection system, and provide a blue LED lamp protection system based on a multi-channel output regulated power supply

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