H Robert Posted January 19, 2012 Share Posted January 19, 2012 Am un voltmetru feromagnetic de c.a. de panou care are scala de 600V si rezistenta interna de 39K, vreau sa stiu daca mai trebuie sa ii adaug o rezistenta aditionala, poate sa masoare cum e acum pana la 600V? Link to comment
yo9hnf Posted January 19, 2012 Share Posted January 19, 2012 Destul de probabil sa-i trebuiasca o rezistenta aditionala. Verifica-l cu multimetrul : masoara rezistenta lui interna si vezi daca se misca acul. Daca se misca, e clar ca instrumentul nu are rezistena aditionala. Link to comment
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