International projectionist (Jan-Dec 1935)

Record Details:

Title:
International projectionist
Date:
Jan-Dec 1935
Publisher:
New York : James J. Finn Publishing Corporation
Volume:
International projectionist (Jan-Dec 1935)
Leaf #:
000113
Language:
English
Collection:
Technical Journals
Format:
Books
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
International Projectionist presented the technology of cinema sound and image projection while addressing the issues and concerns of union projectionists. -- David Pierce, 2013
Date Added:
November 16, 2023
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April 1935 INTERNATIONAL PROJECTIONIST New G-E COPPER OXIDE RECTIFIER IMPROVES PROJECTION EFFICIENCY This new General Electric Copper Oxide Rectifier is especially designed to meet the requirements of projection lamps using the new Suprex carbons. It is a rectifying device of proven reliability, safety and economy. The G-E Copper Oxide Rectifier operates indefinitely without attention or replacement. The three-unit transformer for three-phase, full-wave rectification delivers extremely smooth output. Great operating flexibility is provided by line voltage taps and secondary taps for adjustments in line voltage, arc voltage, and current. This wide range of adjustments meets all individual operating needs. The G-E Copper Oxide Rectifier is available in two sizes: 40-50 amperes for the 6-7 mm. trim and 40-65 amperes for the 6.5-8 mm. trim. The overall efficiency of both is 70 per cent. Such high efficiency saves from 5 to 10 cents per hour in cost of current over other types of D-c. power equipment. Mail the coupon today for complete information on this G-E Copper Oxide Rectifier. Section A-604, Merchandise Department, General Electric Co., Bridgeport, Conn. Please send me complete information on the new G-E Copper Oxide Rectifier for Projection Service. Name Address.. City _l GENERAL ® ELECTRIC SPECIAL RECTIFIERS MERCHANDISE DEPARTMENT, GENERAL ELECTRIC COMPANY, BRIDGEPORT, CONNECTICUT