Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 54
and platecircuits. The alternating component of the plate circuitpassing through the condenser Ci produces a voltage dropacross Ci. Since this drop is also in the grid circuit, its VACUUM TUBE OSCILLATORS .31 effect is carried on to the grid and oscillations are thus sus-tained. The direct current… … d/recf a/rrerrfbtj-pass L L. 9 —p Fig. 14.—Electrostatically coupled feedback circuit. so that it has to pass through the condenser. This functioncan be satisfactorily performed by an iron-cored inductancecoil of comparatively low resistance and connected in par-allel with the couphng condenser.…
Radio
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