Wireless Telegraphy And Wireless Telephony An Understandable Presentation of T
Wireless Telegraphy And Wireless Telephony An Understandable Presentation of T
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To quickly assess the difficulty of the text, read a short excerpt:
A common form of such a key, which is of Fig. 28. Long Range Morse Key yery heayy construc tio n and of extra wide movement, is shown in Fig. 28.
Alternating=Current Transformers. In nearly all high-power stations it has been found advantageous, if not absolutely necessary, to discard the induction coil as a means of charging the high capacities used, substituting the alternating-current transformer, This in- volves the employment of an alternating-current as the initial source of power. Transf...ormers designed for this purpose are wound for a high ratio of transformation, generally for a secondary voltage of at least 20, 000 volts, and often 30, 000 to 50, 000. A difficulty expe- rienced with the use of the transformer is the liability of forming an alternating arc between the balls of the gap in place of the proper oscillatory spark. The practical short-circuiting of the trans- former by this action causes a great rush of current through the primary, which, if it has not been guarded against, is liable to cause great havoc with the gen- erator, blowing out the fuses and possi- bly working other damage more serious.
What to read after Wireless Telegraphy And Wireless Telephony An Understandable Presentation of T?
You can find similar books in the "Read Also" column, or choose other free books by Charles Grinnell Ashley to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A common form of such a key, which is of Fig. 28. Long Range Morse Key yery heayy construc tio n and of extra wide movement, is shown in Fig. 28.
Alternating=Current Transformers. In nearly all high-power stations it has been found advantageous, if not absolutely necessary, to discard the induction coil as a means of charging the high capacities used, substituting the alternating-current transformer, This in- volves the employment of an alternating-current as the initial source of power. Transf...ormers designed for this purpose are wound for a high ratio of transformation, generally for a secondary voltage of at least 20, 000 volts, and often 30, 000 to 50, 000. A difficulty expe- rienced with the use of the transformer is the liability of forming an alternating arc between the balls of the gap in place of the proper oscillatory spark. The practical short-circuiting of the trans- former by this action causes a great rush of current through the primary, which, if it has not been guarded against, is liable to cause great havoc with the gen- erator, blowing out the fuses and possi- bly working other damage more serious.
What to read after Wireless Telegraphy And Wireless Telephony An Understandable Presentation of T?
You can find similar books in the "Read Also" column, or choose other free books by Charles Grinnell Ashley to read onlineMoreLess
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