1. 䳿 .
䳿 .
3-32 7-27.
.
1. 1 3-32 , , , , . U = (220 22) f = (50 0,5) . (50 100) (10 60) . (45÷80) ∙.
.
䳿 , , , . . 5.1, , 䳿 .
:
, 1 , ( ), ( ), , ò , .
, fx , , . Ux ¢ (. 5-1, ).
1 ( ) () , fx (.5-1, )
ò , 2 ( ). () , . 2 t1 t2, TN (.5.1, ).
ò t1 t2. TN = (t2 - t1) ( ) , . TN N . Tx fx , (Tx = 1/fx), N Tx, TN.
N = TN / Tx= TN × fx; TN = 1, N = fx, (.5.1, ).
TN . TN.
, (1)
δ0 ; δ0 ≤ 6∙10-6 (%);
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TN , ;
fx , .
1.2. () 7-27 ( 7-27 , 7-27 / 1 ) , , .
:
f = (50 0,5) , U = (220 4,4) ; t = (20 5), v = (65 15)%.
100 1000 .
R = (107 5%) . = 40 f = 50 , = 60 .
U ≤ 100
100 ≤ U ≤ 1000
Uk ;
U .
100 1000 f = (10 ÷ 100 ). R = 106 , = 45 .
.
, 220 , 35 ∙. .