| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain the same rotating speed without changing the specifications of a motor even when supply voltage and power supply frequency differ in a fan filter unit. <P>SOLUTION: This control device for the fan filter unit for controlling the phase of supply voltage by applying a thyristor has a means for setting or detecting the supply voltage, and a means for setting or detecting the power supply frequency, and controls the supply voltage to the fan filter unit to be the same even in the case of different supply voltage and power supply frequency, to obtain the same rotating speed of the motor. <P>COPYRIGHT: (C)2008,JPO&INPIT |
