公开(公告)号：US11672073B2

公开(公告)日：2023-06-06

申请号：US17417173

申请日：2019-12-17

Applicant: SIGNIFY HOLDING B.V.

Inventor： Xiajuan Wu ,  Dalibor Cvoric ,  Ye Liu ,  Haimin Tao ,  Yun Wang ,  Han Lu ,  Jing Yang ,  Deyong Kong ,  Jing Li

IPC: H05B45/50 ,  H05B47/20 ,  F21V25/00 ,  F21V25/04

CPC classification number: H05B47/20 ,  F21V25/04

Abstract: A lamp has a safety circuit connected to first and second electrical connection terminals. A test is used to detect if the first and second electrical connection terminals are both connected to external power without an interfering impedance such a human body, and only then enable operation of the lamp. A time for the test is different from a time when another lamp in the system applies a test.