| 摘要 |
The present invention relates to a current control circuit for a solenoid valve capable of reducing high-frequency noise without using a current control unit. The current control circuit for a solenoid valve according to the present invention comprises: a coil of a solenoid valve connected to a power source; a current detection sensor for measuring a current flowing through the coil; a transistor including a drain terminal connected to the coil, a source terminal connected to the current detection sensor, and a gate terminal; and a microcontroller unit for controlling voltage being supplied to the gate terminal of the transistor according to error values between measured current values measured by the current detection sensor and a predetermined target current value. [Reference numerals] (40) Microcontroller unit; (41) PWM modulation part; (42) PI control part; (43) ADC conversion part |
