Pentru citiri precise si rapide se prefera utilizarea unor termometre electronice. In continuare este prezentat un termometru simplu, cu sensibilitate buna si variatie liniara in gama 22 - 42C. Domeniul…
Un.aparat de masura si control deosebit de util electronistilor este volt-ohmmetrul. Pentru a veni in sprijinul celor care posea un instrument de 100μA prezentam un montaj foarte simplu si care…
Aparatul din figura 14 are in plus, fata de montajele anterioare, un etaj amplificator de; radiofrecventa. Receptia se poate face fie cu o antena exterioara (A1), fie cu o antena…
In figura 13, a este prezentat un aparat cu o schema simplificata, care nu necesita prea multe explicatii. In schema din figura 13, b, semnalul detectat ataca direct, fara condensator…
Cu receptorul realizat dupa scliema de principiu din figura 12 se poate obtine o receptie puternica in casca si multumitoare in difuzor, datorita faptului ca i s-a mai adaugat un…
Pornind de la schema precedenta se poate realiza o varianta a unui receptor cu amplificare directa, alimentat cu tensiuni mici, obtinute dintr-un element galvanic care arc drept electrolit si depolarizant…
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