Patent ID: 8686655
Filing Date: 2014-04-01
Classification: H05B

Abstract:
1. A lighting circuit that is for a lamp including a light-emitter, the light-emitter including a plurality of Light Emitting Diodes (LEDs) in connected state, the lighting circuit comprising: a rectifier circuit that rectifies power supplied from an alternating current power supply; an inverter circuit connected to an output side of the rectifier circuit; and a resonant circuit connected to an output side of the inverter circuit, wherein the resonant circuit includes an inductor and a capacitor and is connected in series with the LEDs, the inductor and the capacitor being connected in series, the lighting circuit further comprises another capacitor, differing from the capacitor included in the resonant circuit, that is connected in parallel with the LEDs, and at least one of electronic components composing the rectifier circuit, the inverter circuit, and the resonant circuit has a withstand voltage that is lower than a voltage stepped up by the resonant circuit when disconnection occurs within the light-emitter.