| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a non-contact power supply device for control which can manipulate an object connected with a secondary unit from a primary unit without entering a place where the secondary unit is provided. SOLUTION: When a push-button switch 31 is turned on, a resistor R2 is short-circuited, a resistance value of the resistor connected with an input terminal Rin of a drive IC 33 is varied, the oscillation frequency of the drive IC 33 deviates significantly from a resonance frequency determined by a secondary winding of a coupling transformer 4 and a resonance capacitor C3, and the output voltage of the coupling transformer 4 is approximately zero. Then, a constant voltage diode ZD1 is turned off, a transistor Q3 is turned off, a collector current applied to the transistor Q3 via a resistor R8 is applied to a base of a transistor Q4, and the transistor Q4 is turned on. By turning on the transistor Q4, a level of an input to an input terminal. In of a microcomputer 62 is changed from high to low and, on this change of this input level, an LED drive pattern is changed.</p> |
