| 摘要 |
<p>PROBLEM TO BE SOLVED: To lower the probability of misunderstanding the condition of a pilot lamp and reduce troublesome display due to the pilot lamp. SOLUTION: A microcomputer 22, if set to a delay light-off mode by jumper chips J1, J2 and a selective operation switch 41, turns off a switch element 21 when a set time passed. In this way, there is no charge current to an electrolyte capacitor C20 and so the microcomputer 22 is stopped, and a TRIAC Q11 is put in non-continuity and so a luminaire 12 is lit off. In the condition that the set time passed for light-off, a delay light-off mode is turned on, so that the microcomputer 22 lights a light emitting diode D31 to be bright or dark.</p> |
