Find the cut-off frequency

  • Thread starter basimjmal
  • Start date
  • #1
1
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i did the lab and find all varible
but I can understand how find cut-off frequency
the question is
From you result in table Find the cut-off frequency


circuit figure

1ibud1.jpg


lab result
http://img19.imageshack.us/img19/6967/80959768.png [Broken]


thanks so much in advance
 
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Answers and Replies

  • #3
CEL
656
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The cutoff frequencies arethe frequencies where the gain is 3dB below the gain at the the middle frequencies.
Since your gain at middle frequency is 17.6 dB, you should extend your measurements below 20HZ and above 20kHz (probably several MHz), to find the cutoff frequencies.
 

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