| 摘要 |
PURPOSE: An anti-lock brake system having a solenoid control circuit is provided to make a solenoid valve perform an on/off function and to function as a relief valve and linear-control by the regulation of constant current. CONSTITUTION: An anti-lock brake system having a solenoid control circuit and braking a vehicle by controlling hydraulic pressure by the opening and closing of a solenoid valve is composed of a first switching unit(Q1) for switching the supply of power from a battery(60) to a solenoid(L) of the solenoid valve; a shunt unit for detecting electric currents flowing through the solenoid to switching operations of the first switching unit; a driving unit for controlling the first switching unit to the potential of the shunt unit; a second switching unit(Q2) parallel-coupled with the shunt unit; and a control unit for supplying a control signal to the driving unit and the second switching unit to a driving mode of the solenoid valve.
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