Design of a Control Circuit of Proportional Solenoid

The paper introduced a design of control circuit of proportional solenoid based on AT89S52 single-chip microcomputer. The circuit uses ADC circuit to convert collected analog signals into digital signals for further procession by AT89S51, and PWM signal output by AT89S51 to make proportional solenoid act after procession of power conversion circuit. The debugging and running results showed validity of the circuit.