Erkennungsschaltkreis und Erkennungsverfahren

Details

Veröffentlichungs-Nr.

EP2690929

Aktenzeichen

EP12189597

Anmeldetag

23. Oktober 2012

Veröffentlichung

27. August 2014

Rechtsraum

EP

IPC

H05B33/08

Abstract

A detection circuit according to embodiments includes a first circuit (19, 19a) and a second circuit (20, 20a) . The first circuit (19, 19a) is turned OFF when an AC voltage to be input to a pair of input terminals (5, 6a) is smaller than a prescribed value, and is turned ON when the AC voltage is equal to or higher than the prescribed value. The second circuit (20, 20a) detects whether the AC voltage is an AC voltage leading-edge controlled by a dimmer (3, 3a, 3b), an AC voltage trailing-edge controlled by the dimmer, or an AC voltage having a continuous phase on the basis of at least one of the value and a gradient of the voltage of the first circuit (19, 19a) when the first circuit (19, 19a) is turned ON while the first circuit (19, 19a) is in the OFF state.

Anmelder

Firma

Toshiba Lighting & Technology Corporation

Land

🇯🇵 Japan

Fachgebiete