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Old 11th February 2003, 01:02 AM   #1
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Location: Univeristy
Question Help~~damping

Few question for all of you:

What are the advantages and disadvantages of overdamped and underdamped circuits?

In what case you would use a overdamped circuit instead of a underdamped one?

In what case you would use a underdamped circuit intstead of a underdamped one?

Why is it poor to design a system which requires a critically damped circuit?? (is it because it is hard to get the right frequency?)


Please help...
very bit counts.
Thanks.
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Old 11th February 2003, 09:08 PM   #2
halojoy is offline halojoy  Sweden
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Default Re: Help~~damping

Quote:
Originally posted by hitboy_sw
Few question for all of you:

What are the advantages and disadvantages of overdamped and underdamped circuits?

In what case you would use a overdamped circuit instead of a underdamped one?

In what case you would use a underdamped circuit intstead of a underdamped one?

Why is it poor to design a system which requires a critically damped circuit?? (is it because it is hard to get the right frequency?)
Please help...
very bit counts.
Thanks.
I am not sure what you mean.
I know that Loudspeakers can be built to dampen.

Give an example, hitboy_sw
of how you do that sort of damping of circuits.

/halo want to know
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Old 13th February 2004, 04:45 AM   #3
Sprog is offline Sprog  Canada
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You know, posting questions like this sorta defeats the purpose of doing your lab report ON YOUR OWN!
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Old 13th February 2004, 05:55 AM   #4
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slightly underdamped is usually desired because the response will be quicker and the overshoot still small, this assumes you want a quick response to an input stimulus and can live with the slight overshoot.

control systems?

really, the lab reports are just to see if you have an understanding. most people will just read a book to get a book answer which is usually less meaningful then a 2 line answer from a person, in which case they learn less. it would be best to do these things on your own though.

my advise is to look at the "step-response" graphs for all 3 condtitions, these should be easy to find if you have any decent book.
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Old 13th February 2004, 03:22 PM   #5
Wizard of Kelts
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For the amplitude of various values of Qts, (free air) or Qtc, (closed box), see post #1 from the following thread:
Response Shapes of Various Values of Qts and Qtc

Post #6 contains the step responses for the same values of Qts or Qtc.

These are taken from the Paper by Richard Small, of Thiele-Small fame.

This is just for the rest of the forum, actually. According to his Profile Page, the author of this thread, hitboy, was last seen on this forum 366 days ago.

I am sure he did very well on his test based on this material and is now sailing along toward his degree.
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