Sound motion pictures : from the laboratory to their presentation (1929)

Page scan 000214 from Sound motion pictures : from the laboratory to their presentation

Record Details:

Title:
Sound motion pictures : from the laboratory to their presentation
Date:
1929
Publisher:
Garden City : Doubleday, Doran & Company, Inc.
Volume:
Sound motion pictures : from the laboratory to their presentation
Leaf #:
000214
Language:
English
Subjects:
Motion Pictures, Motion pictures--Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 22, 2024
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i94 SOUND MOTION PICTURES JACK SCALE ACTUAL DESIGNATION MEANING READING VALUE EB123 X 100 Plate voltage on tubes 1,2, 5 Volts 500 and 3, multiplying factor 100 EB4-13X100 Plate voltage on tubes 413, multiplying factor 100 ECX 50 Grid (bias) voltage on power tubes (tubes 4-13), multiplying factor 50 EAX 2 Lamp and filament voltage, multiplying factor 2 IP Front Plate current (amp.) on Tubes front power tubes IP Back Plate current (amp.) on Tubes back power tubes Note: Where reference is made in the Meter Reading Table to certain tube numbers, the following tubes and numbers correspond: TUBE NUMBER RADIOTRON 1 UX-210 2 UX-84I 3 UX-210 4-13 ux-845 The last number of each jack designation is a multiplying factor that must be applied to the scale reading to give the actual value in volts, amperes, or milliamperes, as the case may be. For instance: IP3X5 — The reading on the meter is 5; the correct plate current is 5X5 or 25 milliamperes. EB 4. = 13X100 — The reading on the meter is 10; the correct plate voltage is 10X100 or 1000. 0 Volts 1000 5 Volts 250 6.6 Volts 13.2 0. 325 Amp. 0.325 0 •325 Amp. 0.325