Patent ID: 9497808
Filing Date: 2016-11-15
CPC Classification: H05B

Claim Text:
1. An LED drive circuit that is connectable to one of a plurality of kinds of phase control type light adjusters which have different characteristic values about a same kind of characteristic and receives a voltage based on an AC voltage to drive an LED load, the LED drive circuit comprising: an adjustment signal generation portion that generates an adjustment signal in accordance with a characteristic of a phase control type of light adjuster which is connected to the LED drive circuit; and an adjustment portion that receives the adjustment signal to adjust a characteristic for driving the LED load, wherein the adjustment signal generation portion detects the characteristic value of a connected one phase control type of light adjuster of the plurality of kinds of phase control type light adjusters and generates an adjustment signal in accordance with a result of the detection, wherein the adjustment signal generation portion includes an external switch, changes and generates a combination of respective adjustment signals in accordance with a plurality of kinds of characteristics of the connected phase control type of light adjuster by operating the external switch.