| 摘要 |
PROBLEM TO BE SOLVED: To prevent at a low cost a burnout of an incandescent lamp which occurs frequently. SOLUTION: A rectification diode for preventing a burnout is mounted on a plug head of an incandescent lamp and the lamp is screwed into a lamp socket, a power is supplied to the incandescent lamp after an alternate current undergoes a half-wave rectification, and as a result, a shock on the filament is alleviated to prevent a burnout, and a troublesome lamp exchanging due to the burnout can be dispensed with. COPYRIGHT: (C)2007,JPO&INPIT |
