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1一种高压线性恒流PWM光电隔离接收端(图1)摘要:本实用新型提供的一种高压线性恒流PWM光电隔离接收端,包括调光电路、光电隔离模块、高压线性恒流模块和LED回路。高压线性恒流模块内设置调光信号端和开关管,调光电路输入PWM信号,经过光电隔离模块,实现电光信号转换;高压线性恒流模块通过调光信号端检测PWM信号,调制开关管的开关占空比,实现调
1 high-voltage linear constant current PWM optoelectronic isolation receiving end (Figure 1) Abstract: The utility model provides a high voltage linear constant current PWM optoelectronic isolation receiving end, including dimming circuit, optoelectronic isolation module, high voltage linear constant current module and LED circuit. High-voltage linear constant current module is set dimming signal terminal and the switch, the dimming circuit input PWM signal through the optical isolation module, to achieve electro-optical signal conversion; high-voltage linear constant current module dimming signal through the detection of PWM signal modulation switch Switch duty cycle, to achieve tune