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university:courses:electronics:electronics-lab-5fr [20 Nov 2018 17:27]
dmercer minor typo
university:courses:electronics:electronics-lab-5fr [05 Mar 2019 11:07]
amiclaus [Directions:]
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 1. Show all your calculations,​ design procedure, and final component values.\\ 1. Show all your calculations,​ design procedure, and final component values.\\
-2. Verify your results using circuit simulator ​(TINA, QUCS, PSpice). Submit all necessary simulation plots showing that the specifications are satisfied. Also provide the circuit schematic with DC bias points annotated.\\ +2. Verify your results using the LTSpice ​circuit simulator. Submit all necessary simulation plots showing that the specifications are satisfied. Also provide the circuit schematic with DC bias points annotated.\\ 
-3. Using the simulator, find the higher 3-dB frequency (f<​sub>​H</​sub>​) while C<​sub>​F</​sub>​ = 0.\\+3. Using the LTSpice ​simulator, find the higher 3-dB frequency (f<​sub>​H</​sub>​) while C<​sub>​F</​sub>​ = 0.\\
 4. Determine Cp, Cµ and r<​sub>​b</​sub>​ of the transistor from the simulated operating point data, (refer to your simulator'​s documentation on how to obtain operating point data). Calculate f<​sub>​H</​sub>​ using the equation from section 1.3 and compare it with the simulation result obtained in Step 3. Remember that the equation gives you the radian frequency and you need to convert to Hz.\\ 4. Determine Cp, Cµ and r<​sub>​b</​sub>​ of the transistor from the simulated operating point data, (refer to your simulator'​s documentation on how to obtain operating point data). Calculate f<​sub>​H</​sub>​ using the equation from section 1.3 and compare it with the simulation result obtained in Step 3. Remember that the equation gives you the radian frequency and you need to convert to Hz.\\
 5. Calculate the value of C<​sub>​F</​sub>​ to have f<​sub>​H</​sub>​ = 50 kHz. Simulate the circuit to verify your result, and adjust the value of C<​sub>​F</​sub>​ if necessary.\\ 5. Calculate the value of C<​sub>​F</​sub>​ to have f<​sub>​H</​sub>​ = 50 kHz. Simulate the circuit to verify your result, and adjust the value of C<​sub>​F</​sub>​ if necessary.\\
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 For further experimentation replace each capacitor with ones that are factors of 2 and 10 larger and smaller than your design values and re-measure the response curve with the Network Analyzer instrument. Do this to only one capacitor at a time to observe its individual effect on the response. Explain the changes in the response that you see. For further experimentation replace each capacitor with ones that are factors of 2 and 10 larger and smaller than your design values and re-measure the response curve with the Network Analyzer instrument. Do this to only one capacitor at a time to observe its individual effect on the response. Explain the changes in the response that you see.
  
 +<WRAP round download>​
 **Resources** **Resources**
   * LTSpice files: [[ https://​minhaskamal.github.io/​DownGit/#/​home?​url=https://​github.com/​analogdevicesinc/​education_tools/​tree/​master/​m2k/​ltspice/​freq_resp_bjt_ltspice | freq_resp_bjt_ltspice]]   * LTSpice files: [[ https://​minhaskamal.github.io/​DownGit/#/​home?​url=https://​github.com/​analogdevicesinc/​education_tools/​tree/​master/​m2k/​ltspice/​freq_resp_bjt_ltspice | freq_resp_bjt_ltspice]]
 +  * Fritzing files: [[ https://​minhaskamal.github.io/​DownGit/#/​home?​url=https://​github.com/​analogdevicesinc/​education_tools/​tree/​master/​m2k/​fritzing/​freq_resp_bjt_bb | freq_resp_bjt_bb]]
 +</​WRAP>​
  
 **Return to Lab Activity [[university:​courses:​electronics:​labs|Table of Contents]]** **Return to Lab Activity [[university:​courses:​electronics:​labs|Table of Contents]]**
  
university/courses/electronics/electronics-lab-5fr.txt · Last modified: 23 Aug 2019 12:42 by amiclaus