The invention discloses a multipath
light modulation apparatus. The multipath
light modulation apparatus comprises a power supply circuit, a single-
chip integrated communication processor and circuit, and multipath adjustable current circuits.
AC power is input to the power supply circuit, an output first-path DC power supply supplies power to multipath LED loads, an output second-path DC power supply supplies power to the single-
chip integrated communication processor and circuit, and the
anode of the output first-path DC power supply is connected with the anodes of the multipath LED loads; a single-
chip integrated communication processor integrates a communication function and a multipath PWM
signal output function into one chip, and the single-chip integrated communication processor and circuit communicates with the outside to obtain an instruction and outputs multipath
PWM signals according to the instruction; and each path of the multipath adjustable current circuits is connected in series between the
cathode of each LED load and ground potential and is respectively controlled by one PWM
signal, and under the control of the
PWM signals, the size of the current of the LED loads is changed. According to the invention, the multipath
light modulation apparatus improves the circuit integration of a control portion and the selection freedom of an AC / DC power supply, and reduces the cost of the multipath light modulation apparatus.