| 摘要 |
PURPOSE:To reduce power consumption without losing the response characteristic of a drive current by retarding a change point of a drive current with respect to the switching point of an original drive signal by a prescribed time and turning on a switching element in advance forming a drive current path within a prescribed time. CONSTITUTION:A timing generating circuit 2 is provided between an input terminal 1 and a control terminal for four switch circuits 15, 16, 25, 26 and the four switch circuits 15, 16, 25, 26 are controlled respectively by control signals S2-S5 formed by the timing generating circuit 2. A couple of switch circuits 15, 26 are switched from ON to OFF, the switch circuit 25 is turned on in preceding over the timing when the switch circuit 16 is turned on by a prescribed time. When a couple of switch circuits 16, 25 are switched from ON to OFF, the switch 15 is turned on in preceding over the timing when the switch circuit 26 is turned on by a prescribed time. Thus, the power consumption is reduced without losing the response characteristic. |
