| 摘要 |
PURPOSE: To simplify a device for regulating voltage drop by providing a first means for generating real value current for representing a scale of applying voltage of a load, and a second means for presetting a target value current, and setting a control rate with respect to a regulating element dependent on a result compared the real value current and the target value current with each other. CONSTITUTION: One terminal of an electromagnetic load 100 such as solenoid valve and the like for setting a injection fuel quantity is connected to a voltage supplying device Ubat, a second terminal is connected to an earth through a switching means 110 (an electric field effect transistor) and a sensor 145, and an output signal of the sensor 145 is inputted into an evaluation circuit 140. In this time, current converters 421, 422 for taking out a voltage value applied on the terminal of the voltage load 100 are provided, and output signals (current) IH IL, of each of voltage current converters 421, 422 are inputted into a block 400. The current IH, IL are compared with a target value current ISOII and a switching means 110 is controlled by control current IG found out from a formula of IG=K×(ISOLL+IL-IH).
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