Richardson's handbook of projection (1927)

Page scan 000133 from Richardson's handbook of projection

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000133
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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MANAGERS AND PROJECTIONISTS 583 OLD STYLE MERCURY ARC RECTIFIER.— The following information is prepared for the convenience of projectionists using G. E. Rectifiers of the design furnished prior to 1918, many of which are still in use, particularly in the west. Before putting this information to use it is well to compare your panel with illustrations shown in Fig. 190 and to determine whether they correspond. Figure 190. 1. The leads marked "AC" should be connected to the lower studs of a double-pole single throw switch located near the motion picture projector. The upper studs of the switch should be connected to the "AC" source of supply. 2. The leads marked + and — should be connected respectively to the positive (upper) and negative (lower) carbons of the motion picture lamp. 3. If the "AC" supply voltage is 110, then connect the