[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Coil form material - Q-killer?
Original poster: Terrell Fritz <terrellfone@xxxxxxxxxxxxxxxxxxxxxxx>
At 12:07 AM 1/10/2007, you wrote:
Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
At 05:56 PM 1/9/2007, you wrote:
Original poster: "Gav D" <gdingley@xxxxxxxxx>
Hi Ed, Jim, Mike
thanks for that information, I will alter my PSpice simulation
accordingly. Were either of you able to measure the Q directly, i.e.
before breakout occurs during operation? I have attempted this by
recording the waveform digitally and performing an FFT, but I think in
the end I was just testing the effectiveness of the FFT! I should
resort to more analogue methods, and suggestions/ideas?
Terry did some of those measurements, gosh, 5-10 years ago. He put
a secondary out in the garage and pinged it with an impulse and
digitized the waveform to measure Q variations with temperature and
humidity. Maybe he'll pipe up with a pointer to the data.
Here is the link,