( ) , - . . . , , 2.21:
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. 2. 22, =0,5 J=1 . : R1=200 O; R2=300 O; R3=200 O; R4=300 O. .
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2. 22
. , 2. 22, . 2. 22, J = 0 ( b d ), 2. 22, =0 ( ). ( 2. 22, ):
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2. 20, , , :
( 4. 20, ) . 4. 20, :
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, , . . , , , .
, k, , j. (2. 40), . , j, . , . .