| http://www.w3.org/ns/prov#value | - The one-way path may include a diode in a closed loop with the inductor and lamp, the inductor maintaining current flow through the lamp and diode when the switch is off. [0009] The inductor preferably includes an inductance or load coil wound on a magnetic core which is non-saturating for the operating range of the drive circuit, which core may for example be formed of powdered iron.
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