Electric lights
AssigneeMicrolights Limited
InventorLawrence Samuel Tyson
Life of this patent
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Abstract
An electronic control (1) for a discharge lamp (D), which is arranged to be connected to a source of alternating current (L,N), having a source frequency, the control having a first and second terminal (J,K) for supplying an electrical power output to operate the lamp; a capacitor (T) is in series with the first terminal, having a capacitance sufficiently small to limit a current flow from the first terminal at the source frequency of less than 30 mA.
Claims22
A control (1, 2) and a discharge lamp (D1′, D2′), the control arranged for connection to a source of alternating current electrical power (L1′, N1′, L2, N2) at a source frequency, the source frequency being a low frequency, the control having a first and a second terminal (F1, S1, F2, S2) for supplying an output of electrical power to operate the discharge lamp (D1′, D2′), the output power being at a high frequency, and a first capacitor (T2′) being connected in series with the lamp to the first terminal (F1, F2), the first capacitor having a value of capacitance, characterised in that the value of capacitance is sufficiently small to limit a current flow from the first terminal at the source frequency to less than 30 mA, and wherein a second capacitor (M2) is connected in series with the lamp to the second terminal (F2), the second capacitor having a value of capacitance, the value of capacitance being sufficiently small to limit a current flow from the second terminal at the source frequency to less than 30 mA.
Dependencies are inferred from the claim text.