Lighting device power supplying system having switching mechanism

Abstract

A lighting device power supplying system having switching mechanism includes a plurality of power controllers and each of the power controllers includes a driving module, a sampling module and a control module. The driving module generates a driving voltage to drive a lighting module. The sampling module samples the driving voltage to generate a sampled voltage. The control module compares the sampled voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormal detecting result when the oscillation frequency of the sampled voltage is not within the default oscillation frequency range or when the oscillation amplitude of the sampled voltage exceeds the default oscillation amplitude threshold.

Dependencies are inferred from the claim text.