Multi -functional LED dimmer circuit

The utility model discloses a multi -functional LED dimmer circuit, input branch road, triode Q1 and LED banks including MCU, accent optical signal input branch road, switching signal, MCU for the integrated DSP who has 2 at least AD converters, MCU still has the PWM output, the c utmost point that Q1 was managed to the utmost point meets vcc through resistance R3, triode Q1's e is extremely through LED banks ground connection, triode Q1's b extremely connects MCU's PWM output, the LED banks includes triode Q2, Q3, Q4 and Q5 and 15 LED lamps, triode Q2, Q3, Q4 and Q5 are NPN type triode. This multi -functional LED dimmer circuit simple structure, the device is few, easy to carry out. 本实用新型公开了种多功能LED调光电路，包括MCU、调光信号输入支路、切换信号输入支路、三极管Q1和LED灯组；所述的MCU为集成有至少2个A/D转换器的DSP；MCU还具有PWM输出端；极管Q1的c极经电阻R3接Vcc；三极管Q1的e极通过LED灯组接地；三极管Q1的b极接MCU的PWM输出端；LED灯组包括三极管Q2、Q3、Q4和Q5以及15个LED灯；三极管Q2、Q3、Q4和Q5均为NPN型三极管。该多功能LED调光电路结构简单，器件少，易于实施。