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: [1]   Word-104992.doc : 1


1. 1.

2. 2.

1. 1.


:

:

20...12 ;

R = 5 ;

= 15,0 ;

R = 1,0 ;

m = 0,045 ;

. = 240 .


1.1 - , .


. , .1.1, . ' R ( ). U 1 - , , , R.

: , . U , R. UR2 >UR 0,1...0,5, , - . R . i , .

.



, , . - 312. :


Ik max = 30 mA.

U max = 20 .

U max = 20 .

P max = 225 .

h21 = 10 - 100.

f = 300 .


1. . , . ( ) , . .

2. . U , :


I = . / U. (1.1)


.

3. i, :


. (1.2)


.

R . R


R = R1/R2 (1.3)


R . ,

UR = (0,150,2) . (1.4)

UR = 0,2 15 = 3 .

U = 5,

= = 15 .

= 5 R :


R = UR / . (1.5)


R = 3/5 10-3 = 600 .

24 600 .


PR = I2 R (1.6)


PR = (5 10-3) 2 600 = 0,015 .

0,125 .

1.2 I

= 9,4 .

1 ( ), .

4. , m . , 150 ( ), ( ), U ( ), 12 .

5.


m = ( - ) / 2 (1.7)


m = (7 - 3,5) / 2 = 1,75 .

6.

Um = m R. (1.8)


Um = 1,75 10-3 1 103 = 1,75 .

7.


= m / m. (1.9)


= 1,75 10-3/45 10-6 = 39.

8.


= 0,5 m Um . (1.10)


= 0,5 1,75 10-3 1,75 = 1,53 .

9. ,


= . (1.11)


= 15 5 10-3 = 0,075 .

10.


η = / 100%. (1.12)


η = (1,53 10-3/0,075) 100 = 2,04%

11. , 2 , , , U = 0,7 , ( ) - U = 0,77 U = 0,71 .

12.


Um = (U - U ) /2. (1.13)

Um = (0,77 - 0,71) / 2 = 30 .

13.


U = Um / Um. (1.14)


U = 1,75/0,03 = 58,3.

14.


= U. (1.15)


= 39 58,3 = 2275.

15.


= 0,5 · m · Um. (1.16)


= 0,5 · 0,045 10-3 · 0,03 = 0,675 .

16.


R = Um / m. (1.17)


R = 0,03/0,045 10-3 = 667 .



1. U h - :

) h21 - . . 1 :


h21= β = Δ/ Δ (1.18)

U=nst;

h21 = 1210-3/0,210-3 = 60;

) h22 - . . :


h22 = Δ / ΔU (1.19)


= nst;

h22 = 2 10-3/5 = 0,4 ;

) h11 - . . 2 :


h11 = ΔU / Δ (1.20)

U = nst;


h11= 40 10-3/50 10-3 = 800 ;

) S - :


S = h21 / h11; (1.21)


S = 60/800 = 0,075

) R - :


R = 1/h22. (1.22)


R = 1/0,4 10-3 = 2500 .

2. :


= h21 R / (R + R); (1.23)

= 60 2500/ (5 103 + 2500) = 50;

= 39;


R = h11 = 800 ;


R = 667 ;


U = h21 R / R; (1.24)


U = 60 1 103/800 = 75

U = 147


= U (1.25)


= 50 75 = 3750.



1. R1 // R2


= / (R1+R2) 10 . (1.26)


10 0,8 10-3 = 0,8

2. R2


R2 = (UR + U) / . (1.27)


R2 = (3 + 0,74) / 0,8 10-3 = 4,675 .

24 3,3 .

1.6

PR2 = (0,8 10-3) 2 4,675 103 = 0,003 .

0,125 .

3. R1


R1= / - R2. (1.28), R1= 15/0,8 10-3 - 4,675 103 = 14,075 .


24 14 .

1.6

PR1 = (0,8 10-3) 2 14 103 = 0,009 .

0,125 .

4. , R


1/2 π ƒ R1 // R2 // h21 r,


r = 25/ = 5


> (1.29)

> = 29 10-6


24 30

5.


1 = 1/ 2πƒ R1 // R2 // [h21 (r +R)].

1 =

1= = 29 10-6


24 30


2 >

2 = = 1,59 ()


24 1,6

2. 2.


.

.

:

Ρ = 50 ,

R = 8 ,

U = 1,8 ,

f = 20,

fα 3 ,

, - .



, , (.2.1): - VT1 VT2 ( , , ), - VT3, - VT4 VT5, VD1VD3 ( ), , R4, R5, C2 ( 2 , , - ). R7, R8 , .

2.1 - .


:

1. ,


~ 1,1· . (2.1)

~ 1,1· 50 55 .


, ~ = 60 .

2.


(2.2)

= 31 .


3. ( )


(2.3)

= 3,9 .

4.


(2.4)


= 64 .

U min - , . U min = 1,0 .

5. ( ) VT4 VT5 ~ . β. , - 816 817, : 818 819

P max = 25 ,P max = 25 ,

U = 60 B,U = 60 B,

h21 25,h21 25, = 3, = 3,

fα 3 , fα 3 ,

p-n-p n-p-n

β 25 VT4 VT5.

6. , , VD1VD3 . ΔU. - U VT4 V5 (R7 + R8), ΔU = 2U + (R7 + R8). U = 0,6 ( 0,6 - , ).

. 1 , = 510 . 1030 - = 4060 . = 60 . R7,R8 , . R , . (R7 + R8) = U= 0,6 R7 = R8,


R7 = R8 = U / 2 (2.5)


R7 = R8 = 0,6/ (100 10-3 2) = 3 .

24 3 .

0,125 .

VT4 V5 0,6 -, , U = 0,6 .

7. 2 106. ( )

= 20 , U.

8. VT3, R6 , VT3 03 = = 20 , R6 "-".


R6 = / . (2.6)


R6 = 64/0,02 = 3,2 .

24 3,24 .

9. β0 VT4, VT5 VT3.

(2.7)


0,156 .

10. , VT3 ,


3 = 03. (2.8)


3 = 64 0,02= 6,4 .

VT3 . 406

P max = 10 ,

U = 80 B,

h21 30, = 5,

fα 3 ,

p-n-p

β3 = 25

11. VT3 VT1, R2 , VT1 UR2 = U, 1 2 . UR2 = U = 0,6 . 1 = 2 ( , 1 ), :


R2 = UR2/1. (2.9)


R2 = 0,6/1 10-3 = 600 .

24 620 .

0,125 .

12. VT1,VT2 ,


= 1 + 2 = (-) / R3. (2.10)


:


1 + 2 (2.11)


= 1 10-3 + 1 10-3 = 2

R3 :


R3 = (-) / . (2.11), R3 = 64/2 10-3 = 32 .


24 32,4 . 0,125 .

13. VT1 VT2 , :


U 2 , (2.12)


U 2 64 128 .,

. 630.

U max = 150 B,

h21 = 40...120, = 1 ,

fα 3 ,

:

β1 = β2 = (40 + 120) / 2 = 80.

14. :

(2.13)


= 11,1.

15. β = R5/ (R4+R5). R4. VT1 VT2 , R4 = R1. R1 VT1 . R4 = R1 = 50100 .

24 50 .

0,125 , , .

:


R5 = R4/ (u - 1). (2.14)


R5 = 50 103/ (11,1 - 1) = 5 .

, 0,125 .

16. 2 f


(2.15)


= 1,59 .

2 .

17. :

1/ωC1 = R / 10, (2.16)


R R1, :


(2.17)


= 0,16 .

2 .

. , R4 . R1 VT1, h21 " r VT2 (R5):


, (2.18)


r = 25/ [].

R = 80 (2 (25/5) 10-3 + 5 103/80) = 5 103 .

:


R = (R / h21 + R7). (2.19)


R = R6, R6 ( VT3 ).

R = (3,2 103/25 + 3) = 131 .

R2 R VT3.


,

= (2.20)

r3 = 25/3 = 25/20 = 1,25 ,


VT3


R = h21 r3. (2.21), R = 25 1,25 = 31,25 .


(2.20)

= = 11,88

.


= R6/r3. (2.22)


= 3,2/1,25 = 2,56.


= . (2.23)


= 11,88 2,56 = 30,4.

, 3 3, .

. β.


= β. (2.24)


= 30,4 25 = 760

(1+) (1+) R R1:


R33 = (1+ ) R R1/ ( R+ R1). (2.25)


R33 = = 16,1.

, R1.

, , (1+) . :


R = R / (1 + ). (2.26)


R = 131 (1 + 760) = 0,17.

:


= / (1+). (2.27)


= 30,4/ (1 + 760) = 0,039.


- , 1, , . , . i , . , , .

, , . ', , . , , i ', . (R4, R5) , , . , , .


1. .. . - . - .: , 1987. - 801.

2. .. . ., - .: , 1981. - 658 .

3. .., - .: ", 2005. - 208 ., . .: , 1977. - 359 .

4 2.417-68. . - 17 .

5. .. ., - .: - .: , 1983. - 264 .

7. . . : . -: . . - .: , 1983. - 512 .

8. : . / . .. . - .: . ., 1982.


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