Isolation serial port circuit in electrode slice treatment

An isolation serial port circuit in electrode plate treatment comprises a double-line conversion 232 chip connected with a serial port of an upper computer, one input and one output of the 232 chip are respectively connected with an optocoupler U1 and an optocoupler U2, the two optocouplers are both 6N137, the input of the 232 chip is connected with a pin 6 of the optocoupler U1, the pin 6 of the optocoupler U2 is connected with a pin 7 of the optocoupler U1, and the pin 7 of the optocoupler U2 is connected with a pin 7 of the optocoupler U2. A pin 8 of the optocoupler U1 is connected with a power supply, a resistor R3 is arranged between the pin 8 and a pin 6, a pin 5 is grounded, a capacitor C1 is arranged between the pin 5 and the power supply, and a pin 2 is connected with a 3.3 V power supply through a resistor R1; the output of the 232 chip is connected with a pin 3 of the optocoupler U2, a pin 2 of the optocoupler U2 is connected with a power supply through a resistor R5, a pin 5 of the optocoupler U2