Pentru determinarea valorii curentului in linia de alimentare vom folosi ampermetre termice sau ampermetre obisnuite, prevazute cu termocuplu. in lipsa acestora, vom folosi beculete de voltaj si amperaj redus (1,5…
Antena constituind elementul de legatura dintre radioemitator sau radioreceptor si mediul de propagare a undelor electromagnetice, este necesara o cit mai buna acordare a acesteia si o adaptare corecta a…
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