Servicing projection equipment (1932)

Page scan 00075 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00075
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 15, 2024
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MERCURY ARC RECTIFIER 59 terminals. Xote if the contacts have become loose or broken. Locate the condition and correct it. (b) The amalgam bridge between the terminals may have ruined the tube. Try a spare tube. (c) The lamp circuit may be open. Xote that all the switches are closed, and that the carbons are brought into proper condition for starting the device. (d) — The carbons may be making insufficient or no contacts at the tips, and poor or no contacts with the jaws or the clamps. Remedy this if it is discovered to be the cause. (e) — If none of the foregoing locate the trouble, and the spare tube does not operate when tilted, rock the tube by hand. Xote if the pools of mercury make a contact, and if not, adjust the tube until they do so. 4. Tube Lights But Goes Out (a) — The lamp carbons, probably, have been pulled too far apart. Re-establish a contact and bring them closer together when the tube lights. (b) — There may be a poor vacuum in the tube. Try a spare tube, and if the trouble ends, discard the old tube.