[sdiy] Q?

[John L Marshall]

According to The ARRL Handbook:

Q for reactors

Q = X/R

Where X = XL for inductors or XC for capacitors
R = sum of all energy losses.


Q = (center frequency)/(3 dB bandwidth)

Take care,
John

Pacific Northwest Synth Meeting September 25, 2004
----- Original Message ----- 
From: <synthplayer88 at spymac.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, September 02, 2004 6:06 AM
Subject: RE: [sdiy] Q?


>
>
> On Thu Sep  2  4:44 , 'Czech Martin' <Martin.Czech at Micronas.com> sent:
>
>>
>>In some book I reqad about the ratio of real power vesus reactive power
>>inb LCR circuits, this can also be a definition of Q.
>>But I can not find this any more.
>>
>>m.c.
>>
>
> They are still readily available, try to make time if you can and go down 
> to the
> local college library and look up circuit analysis books. Or ou can find a 
> bit of
> that info here
>
> http://www.opamp-electronics.com/tutorials/ac_theory_ch_011.htm
>
> But you will find a lot more of the info in detail in terms of calculation 
> and
> deriviation of the formulas ....... Will list some books when I am back at
> college library tomorrow. :)
>
>
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