Bajardi : 711-19 guruh A. Uvraimov Tekshirdi

Berilgan parametrlar:

Emitter qaytargich sxemasini tadqiq etishda NI-Multisim dasturiy muhitida fodalanish tavsiya etiadigan tranzistorlar: BC847, BC547А.

11-variant.

A=0.3; R_e=820 Om; I_k= 3 mA; E₂= 15 V;

Dastlabki hisoblashlar.

E₀ = 3.129 V.

E₁ – kuchlanish bilan boshqariluvchi o’zgarmas manbaa qiymatini hisoblash:

𝐸₁ = 𝐸₀(1+𝐴sin(𝜔𝑡)):

E1₀ = 3.129(1+0.3sin(0˚))=3,129

E1₁ = 3.129(1+0.3sin(30˚))=3,598

E1₂ = 3.129(1+0.3sin(60˚))=3,941

E1₃ = 3.129(1+0.3sin(90˚))=4,067

E1₄ = 3.129(1+0.3sin(120˚))=3,941

E1₅ = 3.129(1+0.3sin(150˚))=3,598

E1₆ = 3.129(1+0.3sin(180˚))=3,129

E1₇ = 3.129(1+0.3sin(210˚))=2,659

E1₈ = 3.129(1+0.3sin(240˚))=2,316

E1₉ = 3.129(1+0.3sin(270˚))=2,19

E1₁₀ = 3.129(1+0.3sin(300˚))=2,316

E1₁₁ = 3.129(1+0.3sin(330˚))=2,659

E1₁₂ = 3.129(1+0.3sin(360˚))=3,129

O’lchash natijalari:

𝜔𝑡,𝑔𝑟𝑎𝑑	0	30	60	90	120	150	180	210	240	270	300	330	360
𝐸1(𝜔𝑡),𝑉	3,129	3,598	3,941	4,067	3,941	3,598	3,129	2,659	2,316	2,19	2,316	2,659	3,129
𝐼б(𝜔𝑡),𝑚𝑘𝐴	8,438	11	12	12	12	11	8,438	7,105	5,773	5,773	5,773	7,105	8,438
𝐼к(𝜔𝑡),𝑚𝐴	3	3,563	3,976	4,128	3,976	3,563	3	2,435	2,025	1,874	2,025	2,435	3
𝑈э(𝜔𝑡),𝑉	2,466	2,929	3,269	3,369	3,269	2,929	2,466	2,002	1,664	1,54	1,664	2,002	2,466

Olingan natijalarga ishlov berish.

• 
  Kuchlanish bo’yicha kuchaytirish koeffitsienti:
  

K_U = ∆U_B/∆U_E = (U_B.MAX-U_B.MIN)/( U_E.MAX-U_E.MIN) = (4,067-2,19)/( 3,369-1,54) = 1.026

• 
  Tok bo’yicha kuchaytirish koeffitsianti:
  

K_I = ∆I_k/∆I_b = (I_K.MAX-I_K.MIN)/( I_b.MAX-I_b.MIN) = (4,128-1,874)/(12-5,773)/10^-3 = 361.97

• 
  Quvvat bo’yicha kuchaytirish koeffitsienti:
  

K_p = K_U * K_I = 1.026*361.97 = 371.38

• 
  Dinamik kirish qarshiligi:
  

R_din.kir = ∆U_B.kir/∆I_b.kir = (U_B.MAX-U_B.MIN)/( I_b.MAX-I_b.MIN) = (4,067-2,19)/(12-5,773)/10^-6 = 301.42 kOm

• 
  Dinamik chiqisg qarshiligi:
  

R_din.chiq = ∆U_E.chiq/∆I_K.chiq = (3.369-1.54)/(4.128-1.874)*10^-3 = 811.44 Om.

Olingan natijalar asosida grafiklar chizamiz:

1. 𝑬𝟏 = (𝝎𝒕); 2. 𝑰б = (𝝎𝒕);

3. 𝑰к = (𝝎𝒕); 4. 𝑼э = (𝝎𝒕).

1)

2)

3)

4)

Xulosa.

Bu galgi laboratoriya ishida bipolyar tranzistorda yasalgan emitter qaytargich sxemasini tadqiq qildik, NI M-multisim dasturiy muhiti yordamida differensial parametrlarini o’lchab, dinamik xarakteristikalarini tahlil qilish ishlarini olib bordik.

Ishni bajarish davomida BC847 nomli tranzistordan foydalandik. Dastlab sxema bo’yicha NI-Multisim dasturida sxemani yig’dik va berilgan boshlang’ich parametrlar asosida E₀ ni topdik va E₁ ning qolgan qiymatlarini topdik va jadvalni to’ldirdik. Va jadval asosida grafiklarni chizdik.