Motion picture projection; an elementary text-book (1921)

Record Details:

Title:
Motion picture projection; an elementary text-book
Date:
1921
Publisher:
New York, Theatre Supply Co.
Volume:
Motion picture projection; an elementary text-book
Leaf #:
00073
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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72 MOTION PICTURE PROJECTION A-C. COMPENSARCS IN MULTIPLE In cases where more than 60 amperes of current is desired irr connection with the motion-picture projection, two alternating-current compensarcs connected as shown in Fig. 4 can be used to give entirely satisfactory service. Two standard alternating-current compensarcs connected in this manner can be used to give a maximum of 120 amperes to the motion picture lamp. Eight values of current ranging between 30 and 120 amperes inclusive can be secured by this connection. To Fuse SLOCK Axo LMS SWITCH line. LAW \\ \ 9 ?! \ I I T r s 5 1 Fig. 4. Diagram of Connections for Use of Two A-C. Conipensarcs in Multiple