,
,
.
Ȩ

Š
 

:

fc = 50 ;

p < 0,19 ;

ΔU1 = ΔU2 = 7 ( )

U = 22  

I = 20

.1

: .

, U2 = (1.5÷2)∙U. , :

U2 = 2∙U = 2∙22 = 44

, U2min U2max :

U2min = U2-ΔU2-pΔU2 = 44 7 0,19∙7 = 35,67

U2max = U2+ΔU2+pΔU2 = 44 + 7 + 0,19∙7 = 52,33

. 2 .

R. :

- I

(1)

- II , 2

- II , 1

R I min, I min ≤ (10-15)%* I

Imin≤0.01*20 A=2A.

I min : 0.1, 0.25, 0.5, 1, 3, 5, 10 ,

I min=1

:

U

I.max:

U = U = 22

:

1,3

2522 :

Ic.min = 1

Ic.max = 37

U.min = 19,8

U = 22

U.max = 24,2

R = 25

I, U

U = Uc...,