Wireless Telegraphy and Telephony Simply Explained: A Practical Treatise Embracing Complete and Detailed Explanations of the Theory and Practice of Modern Radio Apparatus and Its Present Day Applications, Together with a Chapter on the Possibilities of Its Future DevelopmentNorman W. Henley Publishing Company, 1912 - 154 стор. |
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Сторінка 35
... continuously at a frequency sometimes as high as a thousand per second . An electrolytic interrupter is both an expensive and a troublesome device . There are other types of interrupters of value in wireless service but the limitations ...
... continuously at a frequency sometimes as high as a thousand per second . An electrolytic interrupter is both an expensive and a troublesome device . There are other types of interrupters of value in wireless service but the limitations ...
Сторінка 54
... continuous direct currents will readily pass , producing a sound - each time there is any change in their value . The purpose and action of most types of detectors is to act as a valve allowing the current to pass through in one ...
... continuous direct currents will readily pass , producing a sound - each time there is any change in their value . The purpose and action of most types of detectors is to act as a valve allowing the current to pass through in one ...
Сторінка 55
... continuously reversing its di- rection to an intermittent current passing in one direction only . The illustration shows two pumps A and B. Each pump is immersed in a pool of water and consists of a cylindrical tube T and T ' having a ...
... continuously reversing its di- rection to an intermittent current passing in one direction only . The illustration shows two pumps A and B. Each pump is immersed in a pool of water and consists of a cylindrical tube T and T ' having a ...
Сторінка 127
... continuous , each one only occupying a very small space of time . The pause between each is very dis- tinct , although it could not be detected with the naked eye . The ten straight lines in Fig . 141 represent ten sparks which cover a ...
... continuous , each one only occupying a very small space of time . The pause between each is very dis- tinct , although it could not be detected with the naked eye . The ten straight lines in Fig . 141 represent ten sparks which cover a ...
Сторінка 129
... continuous line , and part by a dotted line . The portions represented by the dotted line occur when there are no oscillations in the aerial , and consequently these A 8 SPARKS OSCILLATIONS M M M M m m m m m in c VIBRATIONS OF VOICE FIG ...
... continuous line , and part by a dotted line . The portions represented by the dotted line occur when there are no oscillations in the aerial , and consequently these A 8 SPARKS OSCILLATIONS M M M M m m m m m in c VIBRATIONS OF VOICE FIG ...
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50 cents A. A. HOUGHTON adjustable alternating current amateur appliances arranged battery BINDING POST boilers chapters CHART circuit coal coil of wire COMPOUND LOCOMOTIVES connected consists construction contains coupled helix detail detector devices diagram diaphragm direct current discharge drawings dynamos Edition electric waves electrodes engravings equipment ether explained flow fully illustrated gas engine Gasoline heating high frequency oscillations included induction coil instruments insulated Lathes Leyden jar Locomotive machine magnetic field manufacture mechanical messages metal methods modern molds motion motor O'CONOR SLOANE operation pass Patent pipes plumbing potentiometer practical treatise Price primary produced pumps radiate railroad receiving apparatus Rubber secondary selenium showing signals slide SLIDER sound waves spark gap speech steam engine steel telephone receiver telephone transmitter tion transmitting tuning coil turbines types Valve Gear variable condenser vibrations Walschaert Valve Gear wireless station wireless telegraphy wireless telephone
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