Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000488
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:
September 28, 2023
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936 HANDBOOK OF PROJECTION FOR Figure 363 will cause constant overloading of your lamp filaments, and thus very greatly shorten the life of the lamps. We would also caution you against deliberate overloading of lamp filaments. The projectionist may get much more light by boosting the amperage above the rated capacity of the lamp when a dense scene comes through, but this practice should strongly be advised against as it greatly shortens the length of life of the lamp. Under no condition should the current exceed 30 amperes. Never use such an outfit as is shown in Fig. 360 except for D. C. If your current is A. C. use the regulator as shown in