(a) Figure 1(a) is a sinusoidal oscillator. Given that the feedback factor is: R³ B= 1 5R R³+j²C²²C² .6R2 CC By assuming no loading effect, i) State the function of diodes D₁ and D₂. ii) Obtain the expression for oscillation frequency fo and calculate its value. iii) Prove that during oscillation, B = V1 = -7 29

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(a) Figure 1(a) is a sinusoidal oscillator. Given that the feedback factor is:
R³
B ===
V₂
By assuming no loading effect,
i) State the function of diodes D₁ and D2.
ii) Obtain the expression for oscillation frequency f, and calculate its value.
iii) Prove that during oscillation,
V₁
R³+j-
1 5R .6R²
@³C³ w²C² @C
iv) Calculate the value of R₂ that will allow this circuit to start and maintain oscillation.
Proof that the calculated value will be able to start and maintain oscillation.
2R
200Ω
с
0.1 μF
2R
200Ω
B =
V₂
R₁
0.5ΚΩ
D1
+4
R
10092
D2
с
0.1 μF
HE
R₂
+15V
-15V
с
0.1 μF
R
10092
- Vo
Transcribed Image Text:(a) Figure 1(a) is a sinusoidal oscillator. Given that the feedback factor is: R³ B === V₂ By assuming no loading effect, i) State the function of diodes D₁ and D2. ii) Obtain the expression for oscillation frequency f, and calculate its value. iii) Prove that during oscillation, V₁ R³+j- 1 5R .6R² @³C³ w²C² @C iv) Calculate the value of R₂ that will allow this circuit to start and maintain oscillation. Proof that the calculated value will be able to start and maintain oscillation. 2R 200Ω с 0.1 μF 2R 200Ω B = V₂ R₁ 0.5ΚΩ D1 +4 R 10092 D2 с 0.1 μF HE R₂ +15V -15V с 0.1 μF R 10092 - Vo
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