Variable high frequency lamp controllers and systems
First Claim
1. A high frequency control circuit for a plurality of lamps, comprising a plurality of variable inductive reactance devices, each reactance device being adapted to be coupled in series with at least one lamp to control the current fed to said lamp, the reactance device being adjustable by a user to alter the intensity of the light emitted by said lamp, and wherein each reactance device comprises a coil having a plurality of tappings spaced along its length and a switch for selectively connecting to one of the tappings, the circuit further comprising a linkage connecting the respective switches of the reactance device such that adjustment of one switch produces a corresponding adjustment of the other switches.
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Accused Products
Abstract
A high frequency control circuit for a gaseous discharge lamp which includes a mechanically variable reactance device coupled in series with the lamp to control the current fed to the lamp. The mechanically variable reactance device is adjustable by a user to alter the intensity of the light emitted by the lamp.
10 Citations
9 Claims
- 1. A high frequency control circuit for a plurality of lamps, comprising a plurality of variable inductive reactance devices, each reactance device being adapted to be coupled in series with at least one lamp to control the current fed to said lamp, the reactance device being adjustable by a user to alter the intensity of the light emitted by said lamp, and wherein each reactance device comprises a coil having a plurality of tappings spaced along its length and a switch for selectively connecting to one of the tappings, the circuit further comprising a linkage connecting the respective switches of the reactance device such that adjustment of one switch produces a corresponding adjustment of the other switches.
Specification