Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 193
ffering but one per cent in wave-length. Fessenden apparatus is sometimes supplied with a so-calledintensity regulator for modifying the intensity of radiation withoutaffecting the frequency. This is for use in communicating withnearby stations. Telefunken System. The system designated by this… … Fig. 53. Fessenden Interference Preventer 16S SYSTEMS OF RADIOTELEGRAPHY 75 Berlin was formed to take over the conflicting interests representedby the Slaby-Arco system and the Braim-Siemens-Halske system.This company is operating under patents granted to Dr. RudolphSlaby of Berlin, Count Georg von…
Electrical engineering
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