Discharge lamp operating apparatus, self-ballasted discharge lamp, dimmer and illumination kit for dimming

摘要

A discharge lamp operating apparatus includes a discharge lamp; a dimmer for performing phase-control with respect to an input power source; and a ballast circuit for dimming and operating the discharge lamp in accordance with an AC voltage that is phase-controlled by the dimmer. A relationshipis satisfied, where Z1 (OMEGA) is an impedance between an input terminal and an output terminal of the dimmer, Vob (V) is a breakover voltage of a bidirectional trigger diode that applies a trigger signal and is connected to a gate terminal of a switching element included in the dimmer, Vin (V) is an effective voltage of a commercial power source, and Z2 (OMEGA) is an input impedance between the input terminals of the ballast circuit.