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Journal of the Illuminating Engineering Society Volume 10, 1981 - Issue 2

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Original Articles

An Energy Efficient Solid-State Controlled Ballast for HPS Lamps

J. C. EngelWestinghouse Research and Development Center, Pittsburgh, Pennsylvania

R. T. ElmsWestinghouse Research and Development Center, Pittsburgh, Pennsylvania

R. E. HansonWestinghouse Electric Corporation, Vicksburg, Mississippi

Pages 81-84 | Published online: 20 Sep 2013

Cite this article
https://doi.org/10.1080/00994480.1980.10748592

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Abstract

A solid-state controlled ballast is described that utilized a custom integrated circuit to provide lamp current and power regulation. The ballast provides a total energy savings over the life of a lamp of 40 percent, the combined result of improved lamp power regulation, lower ballast losses, and part-of-night dimming.

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