Karaoke light controller circuit (2)

Circuit working principle: MIC is an electret condenser microphone. After receiving the singing signal, it
outputs the corresponding electrical signal, which is amplified by the transistor VT (9014) and sent to
pin 5 of the IC through Rp1 and C2. The IC is a ring pulse distribution/driver, model LC182. It uses
a dual-in-line 8-pin plastic package and contains a rectifier amplifier, a voltage-controlled oscillator, a pulse distributor and four open-drain output stages. The functions of each pin are as follows: pins 1, 2, 6, and 7 are outputs
respectively.
Terminals c, D, B, A; pin 3 is the voltage controlled oscillator external resistor-capacitor component terminal R/C;
pin 4 is the negative terminal Vss of the power supply; pin 5 is the input terminal V1 of the rectifier amplifier; pin 8 is the positive terminal
Vcc of the power supply.