| 摘要 |
PURPOSE:To reduce the burden in a power supply device at drive, by providing a means increasing an output voltage to a driving signal to drive a load and a means delaying the driving signal. CONSTITUTION:A load control circuit 7 in driving a load 10 generates a driving signal from a driving signal generating circuit 9. This driving signal is transmitted to the load 10 and also to a power supply unit 1. In the power supply unit 1, a transistor Q1 is operated, a photo-coupler 6 turns on, and a reference voltage VH inputted to an input terminal of an operation amplifier 5 is incrased. The operational amplifier 5 performs the instruction of increase of the output voltage to a DC-DC conversion circuit 3. The circuit 3 increases the output voltage and the charge of a capacitor C is increased by it. A signal is applied to the load 10 via a delay circuit 8, and a DC motor 11 is driven with a delay time. |
