F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000287
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
June 04, 2024
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CURRENT RECTIFICATION 269 24. Name the various parts shown in the diagram Fig. 74 A. 25. Why does not the secondary (Fig. 74 A) short circuit the filament ? 26. How much resistance has the filament ? 27. What does the filament do when it is heated to incandescence ? • 28. What are two important points concerning the filament and electrons ? 29. What does the upper secondary coil (Fig. 74 A) do? 30. How is a vacuum tube charged at each alternation of current ? Jn , 31. Why do the electrons rush to the plate when it is positively charged t^cxu*^ 32. In which direction does electricity flow as indicated by vacuum tube rectifiers? 33. Is the flow of electrons from filament to plate free? — 34. Trace the current flow in Fig. 74 A. 35. What happens when the positive plate becomes negatively charged ? , 36. May more than one-half of each a.c. wave be used with one tube? — 37. Describe the action occurring in diagram Fig. 74 B. 38. What kind of a rectifier is the one wired as shown in Fig. aw? -vs. ,^4 39. What two types of tubes can be used as rectifiers? 40. What type is preferable? 41. What part of a tube rectifier may give trouble? 42. Should the transformer temperature be checked occasionally? 43. Will the failure of one tube cause the rectifier to fail entirely? , o / sza/l "Stack" or "Disc" Rectifiers, page 287 44. Can the stack rectifier be made in any desired capacity? 45. Does the stack rectifier require attention after installation? 46. Does the rectifier make any noise or vibration? Does it affect the sound ? 47. What is represented in figures 74 D and 74 E ? 48. What is represented in figure 74 F? Explain the action illustrated in it. 49. To what is the rectification action attributed ?