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 nu necesiti comutatoare. Un fir de masura se conecteaza la borna comuna, iar celalalt se cupleaza la o serie de borne, functie de marimea electrica masurata. Pe pozitia voltmetru de curent continu se pot masura tensiuni intre 0 si 1000V prin intermediul a 6 domenii de masura. Tensiunile alternative intre 0 si 500V pot fi masurate prin intermediul a 4 domenii.
Ca ohmetru se utilizeaza numai pe o singura scala intre 0 si ∞. Etalonarea se va efectua comparativ cu un multimetru digital sau unul analogic de mare precizie.
Pentru a avea scala unica, pentru toate domeniile de masura a tensiunilor continue si alternative se vor ajusta valorile rezistenlelor serie.
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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 nu necesiti comutatoare. Un fir de masura se conecteaza la borna comuna, iar celalalt se cupleaza la o serie de borne, functie de marimea electrica masurata. Pe pozitia voltmetru de curent continu se pot masura tensiuni intre 0 si 1000V prin intermediul a 6 domenii de masura. Tensiunile alternative intre 0 si 500V pot fi masurate prin intermediul a 4 domenii.
