Encyclopedia > 18th century BC

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18th century BC

(19th century BC - 18th century BC - 17th century BC - other centuries)

(3rd millennium BC - 2nd millennium BC - 1st millennium BC)


Events:

Significant persons:

Inventions, Discoveries, Introductions:



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Back-to-back connection

... input to a transmitting device. Note: The term "direct," as used in both definitions, may be construed as permitting a passive device[?] such as a pad[?] (attenuator) ...

 
 
 
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