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in the lead from the plate to the tap on the transformer.
The same thing can be done with any other transformer. The lead going to the grid of the tube is left as is. The lower end of the secondary is connected either to the plate terminal or the plus B terminal of the primary. The end of the primary that has not been used is connected to negative C. Which end of the primary to connect to the lower end of the secondary must be found by trial, the connection giving the greatest volume is the one to use. The coils are then connected so that they are in phase. A resistance is put between the plate and the B supply and an isolating condenser connected from the plate to the junction of the pri
cTi<j +-A
CJ. ij
mary and secondary. Figure 4 shows the two ways that the primary and the secondary can be connected together.
— o —
709A DRIVE
A few cases have been found where pins which hold bevel gear on main drive shaft of this gear box have dropped out. This usually happens on the gear which drives 707-A Drive. In this case, the gear box may be taken apart and pin reinstalled, but should be set with a small center punch to avoid this pin from coming out again.
SPASMS » » »
by J. B. G.
Directory Solicitor : And your oc
cupation?
Brother Rose: Sound projection
ist.
D. S. : A what, sir?
Brother Rose: Er — a projectionist.
D. S.: I beg your pardon?
Brother Rose, blushing, but sticking to the good ship Nomenclature: A projectionist.
D. S.: You win. How do you
spell it?
Brother Rose: Eh? Oh, ah — well, put it down like you did last year — operator.
There is that Scotch exhibitor, too, who demanded a replacement on his 4-A Reproducer, claiming that the needle wore out completely in a few months.
And while we’re about it: That
Scotch sound recording — the squeeze track.
Then again — ever discriminating and genteel — the Loudspeaker tips its hat to the brother who blushes furiously when asking for the oil absorbent material for his projectors.
And the astute technologist, President Litton of Chapter 12, devoting his entire shift in attempting to weigh a heavy splice.
— o —
A touching tribute was paid Bro. “Gantry” Cates at the last meeting. He entered the hall, his shiny head bent low because he was three minutes late, and the entire membership started to chant: “Here Comes the
Sun.”
Brother Nichols brought up a splendid point at the last meeting in which he explained that his propensity for emptying bottles was purely in the line of duty insofar as he is saving the corks which will be glued upon the walls of his theatre to improve the sound absorption.
Twenty three