Circuitul squelcch din figura permite numai transmiterea unor semnale care au nu nivel mai mare decit un prag dat. Dioda D si condensatorul C2 formeaza un detector de varf. Tensiunea de…
Constructia receptoarelor radio, dupa schemele prezentate mai jos, este recomandata in scopul unui exercitiu tehnic cic orientare si indeminare spre montajele complexe ale aparatelor de model industrial. Se mentioneaza ca…
Citirea usoara a schemelor radioreceptoarelor ofera avantajul recunoasterii tipului aparatului, iar ca urmare inlesneste constructia sau depanarea sa. Se stie ca in schemele, aparatelor de receptie, etajele se aranjeaza de…
Semnificaţia abrevierilor (ARF, AAF, MF, MA-BLU etc.) este redată în glosar. Transmiterea informatiei (auditiva-vizuala) pe cale electrica la distanta, se realizeaza prin intermediul unui sistem complex care include un transmitator.…
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