American National Standard for Electric Lamps–Dimensions for Projection Lamps–Double-Contact, Medium Ring (Special B), Base-up Type

Published by	Publication Date	Number of Pages
ANSI	01/06/2016	10

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Category: ANSI

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ANSI C78.1401 – American National Standard for Electric Lamps–Dimensions for Projection Lamps–Double-Contact, Medium Ring (Special B), Base-up Type

ANSI C78.1401-2004 (R2009, R2016) establishes the dimensions essential to the interchangeability of lamps of the double-contact, medium ring (Special B), base-up type. It is not intended to prescribe either operating characteristics or details of design, such as the shape of the ventilation ports or the method of attachment of the prefocus ring to the base.