Electrical news and engineering . High Voltage D. C. Generators for Wireless Telephony The Kobhms & Mvers Company, Springfield, Ohio, ha>developed a new line of high voltage direct current gener-ators and motor-generator sets for service with wireless tel-ephone outfits. The generators are made in . and 1000volt types in capacities of 100, 200 and rm watts, for usewith vacuum tubes and for other special services. The motor-generator sets are furnished for operation on110 or ^20 volt 25, .50 and 60 cycle, phase, alternatingcurrent circuits, and on 32, 115 an,l 230 volt, direct cu
Electrical news and engineering . High Voltage D. C. Generators for Wireless Telephony The Kobhms & Mvers Company, Springfield, Ohio, ha>developed a new line of high voltage direct current gener-ators and motor-generator sets for service with wireless tel-ephone outfits. The generators are made in . and 1000volt types in capacities of 100, 200 and rm watts, for usewith vacuum tubes and for other special services. The motor-generator sets are furnished for operation on110 or ^20 volt 25, .50 and 60 cycle, phase, alternatingcurrent circuits, and on 32, 115 an,l 230 volt, direct current. Motor-Generator SetUnion Ring Type fOO-inOO Volt GeneratorDouble Commutator Type circuits. They are of compact construction. The 500 voltoutfits are the two-bearing, union ring type, while the 1000voH outfits are the four-bearing, sub-base type. The out-fits are carefully balanced, insuring freedom from vibrationand qui^t operation. The large number of bars in the com-mutators of the generators does away with the objectionable luim which is present when generators arc used which have,1 smaller number of bars in the commutator. All generators are shunt wound. In the 500-volt typesthey have a single commutator. The 1000-voIt types have acommutator at each end of the generator, so arranged thatthe windings can be connected in series for 1000 volts or inparallel for 500 volts as desired. The 500-6 volt and 500-12 volt type generators have twocommutators, and other new features, and deliver 500 voltsfor charging the plate at one end and 6 or 12 volts for heatingthe filament at the other en
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