At Sunday, October 23, 2005 9:21 PM, Tom Clark wrote:
Going in the other direction, the mechanical resonant frequency
changes with time because, as the xtal vibrates, microscopic cracks in
the structure of the quartz break apart. Running at high power makes
the crystal generate these
Poul-Henning Kamp wrote:
But did you test it both in horizontal an vertical orientation ?
I am not aware of any vertical testing, although the burn racks
may have been vertical. The end application had random orientation
and no one reported any orientation dependence.
Rick Karlquist
It has nothing to do with throwing off atoms. A Xtal is actually a
This only happens in very low quality crystals that have impurities on
the surface.
Going in the other direction, the mechanical resonant frequency
changes with time because, as the xtal vibrates, microscopic cracks
PM
To: time-nuts@febo.com
Subject: [time-nuts] Xtal Oscillator Aging
Brooke (no relation) commented
Hi Richard:
It's my understanding that this optimization can be done by changing
the oscillator power level at the crystal.
In the case of the 32768 Hz watch crystal, it must be run a very
Brooke (no relation) commented
Hi Richard:
It's my understanding that this optimization can be done by changing the
oscillator power level at the crystal.
In the case of the 32768 Hz watch crystal, it must be run a very low power
and it has a very low aging rate when compared to
