| 摘要 |
PURPOSE:To reduce the size and weight of the image forming device which includes a control circuit for a power source by integrating control circuits which are the major part of the image forming device on the same chip. CONSTITUTION:The control circuit for a switching element is integrated on the same chip Q301 together with a microcomputer for sequence control, digital circuits such as its peripheral memory Q1, timer Q22, etc., a pulse-width modulating circuit PWM for image formation, operational amplifiers Q4-Q10, and an analog circuit such as an analog multiplexer MPX. Consequently, the device is reducible in size and weight. |
