The Encyclopedia Americana: A Library of Universal Knowledge ...Encyclopedia Americana Corporation, 1924 |
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Seite 330
... electromotive force must be provided . An electric " circuit " may be represented , as in Fig . 1 , by a line or wire , W ; battery , B , the B dold K W W FIG . 1.- Metallic Circuit . thin and thick lines of which in the figure con ...
... electromotive force must be provided . An electric " circuit " may be represented , as in Fig . 1 , by a line or wire , W ; battery , B , the B dold K W W FIG . 1.- Metallic Circuit . thin and thick lines of which in the figure con ...
Seite 331
... electromotive force of about 300 volts . It is , therefore , more economical and in other ways better to employ a lower electromotive force , about 60 volts in this case , and a relay having many turns of finer wire than the sounder ...
... electromotive force of about 300 volts . It is , therefore , more economical and in other ways better to employ a lower electromotive force , about 60 volts in this case , and a relay having many turns of finer wire than the sounder ...
Seite 334
... electromotive force . As the paper is drawn along , the needle , or brush , drops into the holes in the paper , making con- tact with the roller and completing the circuit . In this way current pulsations corresponding in duration to ...
... electromotive force . As the paper is drawn along , the needle , or brush , drops into the holes in the paper , making con- tact with the roller and completing the circuit . In this way current pulsations corresponding in duration to ...
Seite 336
... forces , whereby by com- pounding the movements of a point in two di- rections , the one at an angle to the other , the ... electro- motive force should be placed in the circuit of wire 1 at its distant or right - hand end , a greater ...
... forces , whereby by com- pounding the movements of a point in two di- rections , the one at an angle to the other , the ... electro- motive force should be placed in the circuit of wire 1 at its distant or right - hand end , a greater ...
Seite 337
... electromotive force to the line ; when key K ' is closed it puts a negative electromotive force to the line . When the keys are " open " the line wire is placed to ground . Since the battery current will di- vide between the two coils ...
... electromotive force to the line ; when key K ' is closed it puts a negative electromotive force to the line . When the keys are " open " the line wire is placed to ground . Since the battery current will di- vide between the two coils ...
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