Patent ID: 8350488

Claim:
A lighting arrangement comprising: a power factor correction circuit comprising a power factor correction controller; a lighting controller operative at an electrical potential consonant with the electric potential of the output of said power factor correction circuit, said power factor correction circuit responsive to said lighting controller; a switching network, coupled to the output of said power factor correction circuit and to respective outputs of said lighting controller, said switching network constituted of a half bridge network; a transformer, a primary winding of said transformer coupled to the output of said switching network; and at least one luminaire coupled to at least one secondary winding of said transformer and arranged to be driven by said at least one secondary winding, said lighting controller operative to: control said switching network via said respective outputs to switchably pass current from said power factor correction circuit through said primary winding, thereby powering said at least one luminaire; adjust the voltage output of said power factor correction circuit; and control each of the electronically controlled switches forming said half bridge network with a deadtime of a duration such that voltage across each of the electronically controlled switches is no more than 1 volt when the respective electronically controlled switch is switched from an open state to a closed state.