Experiment No. 4 bsc.4th semester
Object
To study the Hartley Oscillator .
Apparatus
Connecting wire, CRO with connecting terminals DC power
supply, carbon resister .
Formula
The frequency of oscillation of the oscillator .
F = 1/2π√LC Hż
Where,
L
= L₁ + L₂ = Resultant inductance of series combination .
L₁
. L₂ = Sell inductance of the two Coily.
C
= capacitance of condenser .
Observation Table
|
S . No |
Theoretical value |
Practical value |
|
1. |
0.36 MHz |
0.384 MHz |
|
2. |
0.23 MHz |
0.33 MHz |
Practical Value
1.
L₁ = 20μH
C = 00.1 μf
F = 1/2π√LC = 1/2x3.14x√20x0.01 = /6.88√0.2
F = 1/ 2.76
= 0.36 MHz
2.
L₂ = 33μH
C = 0.01 μF
F = 1/2π√LC = 1/2x3.14 √0.01x33
1/6.28√0.33
1/6.28x0.57
0.88 MHz
Calculation
1.
The frequency of
Hartley oscillator observed.
By using
CRO-
F =
0.38 MHz & 0.33MHz
The
frequency of Hartley oscillator calculated .
By using
the formula –
F = 1/2π√LC = 0.36 MHz and 0.28MHz
Theoretical
Value –
1.
So μH
T₁ = 15x02x 10⁻⁶
F₁ = 1/ T = 1/15x1.2x10⁻⁶ Hz
F1 = 10⁶/2.6 Hz
0.384 MHz
2. L₁ = 33μH
T₁
= 15x0.2x10⁻⁶
F₂ = 0.33 MHz
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Result
1.
The frequency of
Hartley oscillator
Observed = 0.38 MHz
2.
The frequency of
Hartley oscillarator = 0.36 MHz
Precautions
1.
All connection
should be high .
2.
Reading of CRO
should be take very carefully .
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Note.
(Please note: if a particular experiment is not visible, please search for it using the search box—for example, Experiment No. 5. (To determine frequency response of single stage RC coupled amplifier .)
कृपया ध्यान दीजिये अगला एक्सपेरिमेंट न दिख रहा हो वो आप सर्च बॉक्स में सर्च कर लीजिये . जैसे , एक्साप्रिमेंट नंबर. 5 या फिर (To determine frequency response of single stage RC coupled amplifier .)