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 #:
000513
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:
August 01, 2024
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POWER SUPPLY FOR SOUND SYSTEMS 495 motor-generator. Below are two switches so mounted on the cabinet door that they automatically break the power supply circuit when the cabinet is opened. This is a safety device. Below are two fuses; the control switch for starting the motor; two other fuses, or heat-operated cut-outs, and terminals for the wires leading from this cabinet to the motor. no v a.c *724 6 CH DOOR SWITCHES (2) r "BRYANT" 15 AMP 2 PLBG FUSES (2) ***** HIM. PANEL" \ \ BOARD SWITCH. F3 ( •254923 GE THERMAL CUTOUTS 4.3 AMPS 550 *OLTS (2) O MOTOR Fig. 113. O+3S0 V O "350 V R| TO R,o I9EW TYPE RES (B00"*a00~) EACH STEP BOO TOTAL RES. I6»000~ -Schematic or simplified presentation .of the circuits of Figure 112. The second circuit shown is that of the generator. At the left are three terminals to which wires from the generator are connected. The central terminal, marked F, is wired to the generator field. Just to the right of this terminal is the generator field control (voltage regulating) rheostat, and to the right of this is the filter, consisting of retard coil L-l, and two sets of condensers (C-l, C-2, C-3 and C-4) in a conventional filter circuit. To the right of the filter are the two terminals through which the 350-volt direct current output is wired to the amplifier in which it is needed. (9) In this drawing the electrical facts are arranged with respect to the convenience of the eye and mind