| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which is inexpensive and is rich in versatility. <P>SOLUTION: The vacuum cleaner 11 includes an electric blower 15. The vacuum cleaner 11 includes a control element 31 to set a phase angle of the input of the electric blower 15. The vacuum cleaner 11 includes a variable resistor 33 the resistance value of which can be variably set and which variably set the power of the electric blower 15 by variably setting the resistance value. The vacuum cleaner 11 includes a control means 32 which determines a phase angle of the input of the electric blower 15 set by the control element 31 according to a resistance value of the variable resistor 33, avoiding a range of a predetermined phase angle at which a harmonic wave not lower than a predetermined limit value generates. <P>COPYRIGHT: (C)2012,JPO&INPIT |
