| 摘要 |
PURPOSE:To reduce the size and weight of the device, to improve power saving effect and safety and to make handling easy by providing the majority of the control circuit of the device to a one-chip microprocessor. CONSTITUTION:The image formation processor Q301 has the DC load of the image forming device using a switching regulator as a power source and the AC load of the image forming device using a switching regulator as the power source of a control part. Further, the device has a CPU Q1, its peripheral digital circuits, operational amplifiers Q4-Q10, PWM circuits Q14-Q16 and Q41, an A/D converter, a D/A converter, an analog circuit such as control circuits for the switching regulators, and those are integrated on the same chip. The DC power source and AC power source are shut off automatically through the control circuits for the series regulators. Consequently, the device is reduced in size and weight, the power saving effect and safety are improved, and the easiness of use is improved. |
