Spannungsteiler¶

U2=((U*R2)/R_GES)
U_Ges=(U2*R_GES)/R2

R1+R2=(U*R2)/U2
R1=((U*R2)/U2)-R2

r2=1000; qalc "((36*$r2)/3)-$r2" = 11000
-> r1=12000
U_GES=(3*(12000+1000))/1000=39

a=1200; qalc "((38*$a)/3)-$a"
=1400

R_ges=1/(1/R1+1/R2)

r2=1000; qalc "((5*$r2)/3)-$r2" = 11000

r2=1000; qalc "((5*$r2)/3)-$r2" = 666,6666667
->680
U_GES=(3*(680+1000))/1000=5,04
(3 × (1000 + 1000)) / 1000 = 6