', . - ', , i - , (. 7.7).
: , , i ' , . u1(t) uc(t), a R2 i ' u(t)
(. 7.8).
∆t+ = ta-t1 u2(t) u1(t) , 䳺 u2(t) u1(t) =∆u(t) = u(t). u(t) i . u(t) -
+um, . . +u2 -U2 䳺 . = RC i u2(t).
u1(t) u2(t) i , u2(t) u1(t) =∆u (t) ' ( t3). ³' ∆u(t), , ' , ' Um, ' . . -u2 +Um. , i .
+U2, , i .