Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 52
of the energy from-the VACUUM TUBE OSCtLLATORS 29 plate circuit may be fed back into the grid circuit. Fig. 11shows a method in which the changes in the plate currentreact directly on the grid circuit through a transformer. Asthe plate, current in coil Lp increases and decreases it setsup… … Fig. 11.^Magnetically coupledfeedback circuit. Fig. 12.—Another type of feedbackcircuit. Another scheme is illustrated in Fig. 12. Here the coilcarrying the plate current and the grid coil have no mag^netic relation to one another but are merely connected in thesame electrical circuit. When a…
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