![Practical wireless telegraphy; a complete text book for students of radio communication . ical circuitis shown in Fig. 61 where the terminalsconnect to a 5S0 volt direct currentgenerator. Assume that only Practical wireless telegraphy; a complete text book for students of radio communication . ical circuitis shown in Fig. 61 where the terminalsconnect to a 5S0 volt direct currentgenerator. Assume that only](https://c8.alamy.com/comp/2CRMA80/practical-wireless-telegraphy-a-complete-text-book-for-students-of-radio-communication-ical-circuitis-shown-in-fig-61-where-the-terminalsconnect-to-a-5s0-volt-direct-currentgenerator-assume-that-only-110-voitincandescent-lamps-were-available-for-light-ing-purposes-then-to-prevent-the-lampsbeing-burned-out-by-excessive-voltage-theyare-connected-in-series-the-complete-cir-cuit-will-pass-y-i-ampere-of-current-at-apressure-of-s50-volts-a-voltmeter-con-nected-around-any-of-the-lamps-would-in-dicate-approximately-110-volts-should-anyof-the-lamps-burn-out-the-circuit-will-befig-60-simpl-2CRMA80.jpg)
Practical wireless telegraphy; a complete text book for students of radio communication . ical circuitis shown in Fig. 61 where the terminalsconnect to a 5S0 volt direct currentgenerator. Assume that only
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![The principles underlying radio communication . o run automatically, at theproper speed for the generator, or perhaps it would be betterto say that there are certain definite speeds at which 60-cyclea.c. The principles underlying radio communication . o run automatically, at theproper speed for the generator, or perhaps it would be betterto say that there are certain definite speeds at which 60-cyclea.c.](https://c8.alamy.com/comp/2CRMM4J/the-principles-underlying-radio-communication-o-run-automatically-at-theproper-speed-for-the-generator-or-perhaps-it-would-be-betterto-say-that-there-are-certain-definite-speeds-at-which-60-cycleac-motors-have-to-run-and-the-generator-has-such-a-numberof-poles-that-it-gives-the-desired-frequency-when-driven-by-amotor-operating-at-one-of-these-speeds-voltage-control-of-thegenerator-is-secured-by-means-similar-to-those-shown-in-fig120-motor-driven-by-d-c-motorwhen-direct-current-at-110volts-is-available-the-arrangement-is-somewhat-different-theexciter-is-unnecessary-because-cu-2CRMM4J.jpg)