公开(公告)号：US10517164B1

公开(公告)日：2019-12-24

申请号：US16408089

申请日：2019-05-09

Applicant: RAB Lighting Inc.

Inventor： Yves Charles

IPC: H05B37/02 ,  H02M1/08

Abstract: Embodiments of the present disclosure provide multi-mode phase control dimmers for lighting devices, particularly for use with wireless lighting control systems. The disclosed universal dimming devices include a load-type detection circuit for determining whether the load for connected lighting devices has an inductive characteristic. The system automatically detects the load characteristic and self-adjusts its phase-cut dimming mode in response. The disclosed solutions require minimal additional components to provide load-type detection beyond those components already included in typical phase dimming applications, particularly in a wireless lighting control environment, thereby minimizing cost. The disclosed solutions have improved reliability by detecting multiple characteristics detected for each of a plurality of AC cycles in order to reliably distinguish between load types.