Calculating cutoff frequency

lowell

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Join Date: Jun 2007

Posts: 3648

Location: Pensacola, FL
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#1

Calculating cutoff frequency

07-07-2008, 07:39 PM

Hey all,
When I use the 2*pi(RC) equation it always comes out with the decimal one place to the left...??

If I enter a typical instance for a triode input i.e. 1meg and .022uf:

1/(6.28(1,000,000*.000,000,022))

My TI-73 calculator spits out 7 hertz... should be 70 hertz right?
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loudthud

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Join Date: May 2006

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Location: Near Dallas Texas
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#2

07-07-2008, 08:11 PM

7 Hz is the right answer.

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Bruce / Mission Amps

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Join Date: May 2006

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Location: Denver, Colorado
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#3

07-07-2008, 08:45 PM

Me too...
7.23Hz

Bruce

Mission Amps
Denver, CO. 80022
www.missionamps.com
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hasserl

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#4

07-07-2008, 09:58 PM

Originally posted by Bruce / Mission Amps View Post

Me too...
7.23Hz

My Excel worksheet spits out 7.24, close enough.
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