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Dispozitivele electronice

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p1033 Itf27tfs24 Supapele electronice, inventate la teeSItf351tfs24 nceputul anilor 1900, au fte3cut posibilte3 amplificarea semnalelor electrice. De atunci, electronica s-a dezvoltat rapid, devenind o ramurte3 importantte3 a tehnologiei.tpar Stpardtplain tqj tfi1080tli0tri0tidctlpartaspalphataspnumtfaautotad
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p1033 Itf351tlang1048tlangfe1033tlangnp1048 Multe dintre componentele folosite teen circuite electronice complexe sunt rezistoare tbai condensatoare electrice simple. Un rezistor este un conductor care permitea trecerea printr-un circiut a unei anumite cantitte3tfei limitate de curent electric. Rezistoarele fixe sunt, de obicei, fte3cute din carbon sau ste2rmte3 deasupra sau teen interiorul unui material izolant. Rezistoarele variabile, folosite de exemplu drept controale ajustabile la radioreceptoare tbai televizoare, au un contact alunecte3tor pentru ca rezistentfea ste3 poatte3 fi reglatte3.tpar Condensatoarele electrice constau de obicei din doute3 plte3ci de metal separate de un material izolant, cum ar fi aerul, hte2rtia sau materialul plastic. Dacte...
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