Elektrotechnik fuer Grundlagen der Elektronik

- , .

, , .. .

s_dc_8.gif

(. 1), , .. .

a b . 1 Uab = j a - j b . (, ) , -

Uab = j a - j b = j a -j +j -j d +j d -...-j i +j i -j k +j k-... -j q +j q - j b =
= (j a -j )+(j -j d)+(j d -...-j i)+(j i -j k)+(j k-... -j q)+(j q - j b) =
= Uac+ Ucd+ Ude+...+ Uik+ Ukl+ Ulm+...+ Uqb =
= Ir1+ Ir2+ Ir3+...+ Irm+E1+ E2+...-En =
= I(r1+ r2+ r3+...+ rm)+( E1+ E2+...-En) = IR + E

(1)

, . , , .

, .. . (1).

R , R > rmax, rmax - , .

, , , .


1


, .

- , .


(. 2), , ..
.

s_dc_9.gif

.

, I I = I1+I2+...+In -J1+J2+...+Jm. , U,

I = Ug1+Ug2+...+Ugn -J1+J2+...+Jm=
=U(g1+g2+...+gn) -(J1+J2+...+Jm)=UG+J

(2)

, . , , .

, , (2).

G, , G > gmax, gmax - , . G=1/R > gmax=1/rmin R < rmin, .. , rmin.

, . . , R 1. , . 2.

1.

 

r1 ; r2
r1 ; r2 ; r3
r1 ; r2 ; r3 ; r4
R=
image18.gif
image19.gif
image20.gif

 


2


s_dc_10.gif

, , (. 3 )). , , .

. 3 ) R1R2 R3 , R1R3 R2R3 , .. . , .


3


. 3 , .

, R-E G-J . , - . . 4.

s_dc_11.gif

: R34=R3+R4 ; J2=E2/R2 ; R234=(R2R34)/(R2+R34) ; J' =J+J2 ; E' = J'R234 ; R = R1+R234 ; E = E' - E1 ; J=E/R.


, , ( ) . , , , . , R . 4, .

, , , . , , - . , - . . 5, , , .

s_dc_14.gif

a b (. 5 )). , .. a b R1 R3 .


4

2.1

    . 2.1 .


. 2.1

. .

, .



          - .

    , n , .

2.2.

. 2.2 .


. 2.2

:

        - 1-, 2- n- .

      , .

       

      , n , .
,

  .

  , n , n R

, (. 2.3). . .


. 2.3

,

   

     

       

       

, , .

2.3.

, , , , , . 2.4. . R1-R2-R3, 1-2-3 , 0 1-2-3, .


. 2.4 , .
, :

   

R0 Rλ1 , Rλ1 + R4 Rλ3 + R5 .

2.4.

.
. 2.5. R1-R2-R3 RΔ1-RΔ2-RΔ3, 1-2-3.


2.5.

, () . :

     


( 20 )

, 1974 - 1980 . , , , , 360±30 /, - . , "Deutsche Physik", . FAQ .


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