| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a non-contact feeder device capable of stably conducting power supply and sending/receiving of signals with non-contact utilizing electromagnetic induction. <P>SOLUTION: This feeder device is structured so that a voltage value, supplied to a drive circuit 5 which is always monitored by an input voltage monitor circuit 24 and an alternating current value to be applied to a primary winding 9a become constant by changing the duty ratio of a pulse signal outputted to a base of a first constant-voltage circuit (a transistor) 17 from an input voltage comparison circuit 23, in such a direction as to cancel voltage fluctuations in an AC power supply 1 according to the monitored result, thus keeping an alternating current value to be applied to a primary winding 9a. <P>COPYRIGHT: (C)2004,JPO</p> |
