Home > Terms > English, UK (UE) > High-intensity discharge lamp
High-intensity discharge lamp
A lamp that consists of a sealed arc tube inside a glass envelope, or outer jacket. The inner arc tube is filled with elements that emit light when ionised by electric current. A ballast is required to provide the proper starting voltage and to regulate current during operation.
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- Part of Speech: noun
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- Industry/Domain: Energy
- Category: Energy efficiency
- Company: U.S. DOE
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