| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress fluctuations of a power source voltage, without using electrical equipment having a high rated voltage, in an electronic apparatus provided with a plurality of the electrical equipment that receives electric power from a power source. <P>SOLUTION: A voltage of 24 V rises during a reset process and a RAM checking process, but the voltage rise can be suppressed, by turning on transistors 516, 536 and by conducting a main fan 410 and a PS fan 430. Furthermore, because the voltage is supplied to the main fan 410 and the PS fan 430 via a Zener diode 515 or 535, only the voltage of 24 V at the maximum that is added. The voltage of 24 V rises, even in a transient period between a sleep mode and a stand-by mode, but the rise of the voltage of 24 V can be suppressed, since the transistors 516, 536 are turned ON by a current that flows via a Zener diode 521. <P>COPYRIGHT: (C)2007,JPO&INPIT |
