[sdiy] Q?

[Tim Parkhurst]

And here I thought 'Q' was just the guy who developed James Bond's weapons.



Tim (From San Jose with Love) Servo

"Imagination is more important than knowledge." - Albert Einstein




> -----Original Message-----
> From: John L Marshall [mailto:j.l.marshall at comcast.net]
> Sent: Thursday, September 02, 2004 8:54 AM
> To: synthplayer88 at spymac.com; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Q?
> 
> 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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