Reduced-power lamp comprising a surge protection element

Details Reduced-power lamp comprising a surge protection element Reduced-power lamp comprising a surge protection element

H - Electricity

05

B

H05B 37/02 (2006.01) H05B 39/04 (2006.01)

Patent

CA 2086973

ABSTRACT OF THE DISCLOSURE A method of reducing power consumption of an electric lighting unit consists of connecting a bidirectional surge protection element, for example a SIDACtor, in series with the lighting unit. During each half-wave of an alternating supply voltage applied to the series-connected SIDACtor and lighting unit, the SIDACtor (a) automatically switches on to supply current to the lighting unit when the voltage amplitude exceeds a given breakdown voltage threshold, and (b) automatically switches off to interrupt the current supplied to the lighting unit and conducted through the SIDACtor when this current drops below a minimum holding current threshold.

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