Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 63
Fig. 20.—Cold cathode rectifier and electrolytic condenser. exactly similar to those shown for use with hot-cathode rec-tifiers with the vacuum tubes replaced by the proper mmiberof cells connected in series. The filament circuit is of coursenot needed. Obviously either single- or double-wave…
Radio
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