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dose anyone know where i can get a Hz - uF graph?

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Old 03-01-04, 10:28 PM Thread Starter   #1
adrian nelson
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dose anyone know where i can get a Hz - uF graph?


dose anyone know where i can get a Hz - uF graph?
if such a thing exist, the problem is i know the appox crossover frequencys i want but i dont know the correct copastors to use.

thanks for the help
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Old 03-04-04, 04:51 PM   #2
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Get an oscilloscope. You might be able to find a decent used one. They are rather expensive, but almost infinitely useful and often necessary for work on electronics. Any good shop should have one ...

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Old 03-05-04, 09:48 AM   #3
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that isnt exactly the best idea, is it? lol fancy telling him to blow money on a multi-thousand $$$ oscilloscope

Get yourself some freeware cross-over design software. that'll tell you everything you need to know.

http://www.linearteam.dk/default.aspx?pageid=winisd

WinISD. It's free, and apparently it will sort out cross-overs for you aswell.

EDIT: yes, it does

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Old 03-05-04, 12:33 PM   #4
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It is exactly the best idea.
threadcraping is my spceicalty

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Old 03-05-04, 12:35 PM   #5
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no it isnt

multi thousand $$ scope, or free software that does the work for you.


Yeah, great idea there mate.

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Old 03-05-04, 12:47 PM   #6
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OK, OK. I don't want to make enemies, although I would like to see England in the springtime.

I think I intrepreted the meaning of the word "graph" differently than intended: as a detection mechanism, instead of a chart.

Yeah, the 'scope won't help him in this situation (not a sarcastic "yeah"). Still, they're pert-snazzy to have around. In this case it would only confirm what's printed on the caps: no use at all.

--excuse my emotions, please

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Old 03-06-04, 10:33 PM Thread Starter   #7
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thanks fo the help, although i found a website that has a calcular to work out the stuff i need,
and yer i prolly *need* an oscilloscope but what i need and what i can/ chose to aford are two different things
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Old 03-09-04, 11:58 PM   #8
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/me breaks out Eng-100 Circuits notebook, rummages through notes.

omega = 1 / R * C.
R = impedance of speakers, C = capacitance in F.

omega = 2 * pi * F ==> F = omega / (2 * pi)

F is your cutoff frequency.



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