Richardson's handbook of projection (1930)

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000114
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 01, 2024
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1038 HANDBOOK OF PROJECTION FOR V2, thus eliminating the need for a battery. T2 delivers a high voltage to the plates and grids of the tubes, which overcomes the second difficulty mentioned. From the middle of the secondary windings of Tl and T2 a pair of wires carries the rectified current via the filter to the load, consisting of the amplifier plate circuit. txe it 10 A O ****** r tv/ȣ>+f6* ce^retf^ TAf> Figure 390. To explain the action of this arrangement, notice that the plates of VI and V2 are connected to opposite ends of the secondary winding of T2. If there is a voltage across this winding, the two plates will therefore be opposite in polarity. Now imagine an instant when the A. C. voltage in the secondary winding of T2 is making the plate of, say, VI positive. Then starting from the filament of VI, current will flow to the plate and grid, then to the lower end of the secondary winding of T2,