| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic beauty appliance that is low cost and improved in its response. SOLUTION: A duty ratio control circuit 8 sets up on-duty of a duty control signal Vb in response to a load detecting signal Ve from a load detecting circuit 10 and a move detecting signal Vf from a move detecting circuit 11. On-duty variation of a pulse signal Vc for oscillation to be input on an ultrasonic oscillation circuit 4 in response to the on-duty of the duty control signal Vb enables to vary on-duty of oscillation voltage Vd with which the ultrasonic oscillation circuit 4 feeds an ultrasonic oscillator 2, which makes ultrasonic output variable. COPYRIGHT: (C)2006,JPO&NCIPI
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