| 摘要 |
<p>PURPOSE:To simplify the measurement of the load current of a device by connecting a pseudo load to a back panel with a card power supply loaded into the device and obtaining the current value for detection of the overcurrent of the power supply as well as a pseudo load current. CONSTITUTION:A pseudo load 22 only is connected to a card power supply 11 then increased to obtain the current value Ioca when a voltage drop is detected. Then the pseudo load current is increased during actuation of a device to obtain the pseudo load current value Igamma when an overcurrent is detected. In such a case, the output current value Iout is equal to the value Ioca, therefore an equation Iout=Ioca=Iload+Igamma is satisfied. Thus, the load current Iload of the device is obtained from an equation Iload=Ioca-Igamma. As a result, the load current is easily obtained with the power supply 11 loaded to the device regardless of the type of the power supply 11.</p> |
