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| | ==Questions== | | ==Questions== |
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| − | #Is there a value of <math>R</math> in which <math>V_{out} \approx V_{in}</math> at resonance. What is the value?(5 pnts)
| + | ===Is there a value of <math>R</math> in which <math>V_{out} \approx V_{in}</math> at resonance. What is the value?(5 pnts)=== |
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| | =The RLC cicuit= | | =The RLC cicuit= |
| | [[File:TF_EIM_Lab5_RLC.png| 200 px]] | | [[File:TF_EIM_Lab5_RLC.png| 200 px]] |
| − | #Design and construct a '''series''' LRC circuit.
| + | ==Design and construct a '''series''' LRC circuit== |
| − | #Measure and Graph the Gain as a function of the oscillating input voltage frequency. (25 pnts)
| + | ==Measure and Graph the Gain as a function of the oscillating input voltage frequency. (25 pnts)== |
| − | #Measure and Graph the Phase Shift as a function of the oscillating input voltage frequency. (25 pnts)
| + | ==Measure and Graph the Phase Shift as a function of the oscillating input voltage frequency. (25 pnts)== |
| | ==Questions== | | ==Questions== |
| − | #What is the current <math>I</math> at resonance? (5 pnts)
| + | ===What is the current <math>I</math> at resonance? (5 pnts)=== |
| − | #What is the current as <math>\nu \rightarrow \infty</math>? (5 pnts)
| + | ===What is the current as <math>\nu \rightarrow \infty</math>? (5 pnts)=== |
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| − | ;LC Resonance circuits
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| − | =The LC cicuit=
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| − | [[File:TF_EIM_Lab5_LC.png| 200 px]]
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| − | ==Design a '''parallel''' LC resonant circuit with a resonant frequency between 50-200 kHz. use <math>L</math> = 10 - 100 <math>\mu H</math>.==
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| − | :<math>\omega_0=\frac{1}{\sqrt{\mbox{LC}}}</math>
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| − | I choose the following values for <math>\mbox{R}</math> and <math>\mbox{C}</math>:
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| − | :<math>R=aaa\ \Omega</math>
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| − | :<math>C=bbb\ \mu F</math>
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| − | So the resonance frequency is <math>\omega_0=\frac{1}{\sqrt{aaa\ \Omega\ bbb\ \mu F }} = ccc\ \frac{\mbox{rad}}{\mbox{sec}}</math>
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| − | Or <math>f=\frac{\omega_0}{2\pi} = ddd\ \mbox{kHz}</math>
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| − | Let's estimate:
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| − | [[File:L4 LC.png | 400 px]]
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| − | ==Construct the LC circuit using a non-polar capacitor==
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| − | ==Measure the Gain <math>\equiv \frac{V_{out}}{V_{in}}</math> as a function of frequency. (20 pnts)==
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| − | ==Measure the Gain when an external resistance approximately equals to the inherent resistance of the rf choke <math>R_{L}</math>. (20 pnts)==
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| − | ==Compare the measured and theoretical values from the resonance frequency (<math>\omega_{L}</math>) and the Quality factor <math>Q \equiv 2 \pi \frac{W_S}{W_L} = 2 \pi \frac{\mbox{Energy Stored}}{\mbox{Energy Lost}}</math> value for each case; <math>W = \frac{1}{2}LI^2</math>. (10 pnts)==
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| − | ==Questions==
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| − | #If r=0, show that <math>Q = \frac{1}{\omega_0 R_L C}</math>. (10 pnts)
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| − | #Show that at resonance<math> Z_{AB} \approx Q \omega_0 L</math>. (10 pnts)
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| − | =The LRC cicuit=
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| − | [[File:TF_EIM_Lab5_RLC.png| 200 px]]
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| − | #Design and construct a '''series''' LRC circuit.
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| − | #Measure and Graph the Gain as a function of the oscillating input voltage frequency. (20 pnts)
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| − | ==Questions==
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| − | #What is the current <math>I</math> at resonance? (5 pnts)
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| − | #What is the current as <math>\nu \rightarrow \infty</math>? (5 pnts)
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Go Back to All Lab Reports
- LC Resonance circuits
The LC cicuit
==Design a parallel LC resonant circuit with a resonant frequency between 50-200 kHz. use [math]L[/math] = 10 - 100 [math]\mu H[/math], R = 1k
[math]\Omega[/math]==
- [math]\omega_0=\frac{1}{\sqrt{\mbox{LC}}}[/math]
I choose the following values for [math]\mbox{R}[/math] and [math]\mbox{C}[/math]:
- [math]R=aaa\ \Omega[/math]
- [math]C=bbb\ \mu F[/math]
So the resonance frequency is [math]\omega_0=\frac{1}{\sqrt{aaa\ \Omega\ bbb\ \mu F }} = ccc\ \frac{\mbox{rad}}{\mbox{sec}}[/math]
Or [math]f=\frac{\omega_0}{2\pi} = ddd\ \mbox{kHz}[/math]
Let's estimate:
Construct the LC circuit using a non-polar capacitor
Measure the Gain [math]\equiv \frac{V_{out}}{V_{in}}[/math] as a function of frequency. (25 pnts)
#Compare the measured and theoretical values of the resonance frequency ([math]\omega_{L}[/math]) (10 pnts)
Questions
Is there a value of [math]R[/math] in which [math]V_{out} \approx V_{in}[/math] at resonance. What is the value?(5 pnts)
The RLC cicuit
Design and construct a series LRC circuit
Measure and Graph the Gain as a function of the oscillating input voltage frequency. (25 pnts)
Measure and Graph the Phase Shift as a function of the oscillating input voltage frequency. (25 pnts)
Questions
What is the current [math]I[/math] at resonance? (5 pnts)
What is the current as [math]\nu \rightarrow \infty[/math]? (5 pnts)
Forest_Electronic_Instrumentation_and_Measurement
Go Back to All Lab Reports
==Design a parallel LC resonant circuit with a resonant frequency between 50-200 kHz. use = 10 - 100 , R = 1k
==
