PSN-L Email List Message

Subject: from one of the 'eggheads'
From: Randall Peters PETERS_RD@..........
Date: Wed, 11 Jul 2012 12:28:03 -0400


I like your style, Geoff, and wish there were more folks in the physics wor=
ld like yourself, willing to 'tell it like it is' from their perspective.
     I would not, however, be broaching the subject of diamagnetic levitati=
on here, if I didn't feel like it might go somewhere-- even in the amateur =
world--beyond thought experiments and wild speculation.

If I am wrong, then your comment

"I think we should just stick with coils and magnets
till the industrial peoples come up with
a new circuit on a microchip"
   is quite appropriate.  But are you aware of the fact that Analog Devices=
 has generated a 'first step' in that direction with their award winning ca=
pacitance to digital converter chip, the AD7745?
     I previously mentioned Eric Daine, who is working with me to try and b=
uild some truly inexpensive instruments around this chip (in a price range =
available to amateurs).
The webpage at http://symcdc.com
describes two instruments that have already been built around the AD7745.  =
They are compact, user friendly, and the performance is from my perspective=
 really impressive.   Our plan is to bring to fruition a seismograph that o=
perates much like my prototype that we've been discussing, except with the =
aforementioned microchip.  Our objective is to have something eventually av=
ailable that would sell in the few hundred dollars range.  Whether that sho=
uld prove viable (attractive price-wise versus performance to many) remains=
 to be seen, due to the novelty of the approach and the need to bring both =
expertise borne of experience (including ideas from this list-serve) along =
with a lot of luck if we're successful.
     Thanks for your forth-rightness,
Randall

I like your styl= e, Geoff, and wish there were more folks in the physics world like yourself= , willing to ‘tell it like it is’ from their perspective.<= /o:p>

     I would not, however= , be broaching the subject of diamagnetic levitation here, if I didn’= t feel like it might go somewhere-- even in the amateur world--beyond thoug= ht experiments and wild speculation.

If I am wrong, then=
 your comment 
I th=
ink we should just stick with coils and magnets

till the industrial peoples come up with

=

a new circuit on a microchip”

<= p class=3DMsoNormal>   is quite appropriate.  But are you aw= are of the fact that Analog Devices has generated a ‘first step’= ; in that direction with their award winning capacitance to digital convert= er chip, the AD7745?

   &= nbsp; I previously mentioned Eric Daine, who is working with me to try and = build some truly inexpensive instruments around this chip (in a price range= available to amateurs).

The webpage at = http://symcdc.com

describes two instruments that have already been built around = the AD7745.  They are compact, user friendly, and the performance is f= rom my perspective really impressive.   Our plan is to bring to f= ruition a seismograph that operates much like my prototype that we’ve= been discussing, except with the aforementioned microchip.  Our objec= tive is to have something eventually available that would sell in the few h= undred dollars range.  Whether that should prove viable (attractive pr= ice-wise versus performance to many) remains to be seen, due to the novelty= of the approach and the need to bring both expertise borne of experience (= including ideas from this list-serve) along with a lot of luck if we’= re successful. 

   =   Thanks for your forth-rightness,

Randall

=

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