[time-nuts] Looking for "The Theory and Design of Quartz Crystal Units" by V.Bottom

[Bob kb8tq]

Hi

The gotcha is that if you want to *use* what’s in that book ( I have a copy and
went to the course back in the 1970’s) the first step is to grab a chunk of quartz.
Next you head over to your X-ray setup and work out what you have. After that 
you go over to the saw and chop some raw blanks. Next you put them on the lap 
and get the faces parallel. You know you got that right when the optical bench 
shows the right number of light fringes on the blank. 

At this point you are still far from having a crystal resonator that you can use. 
However you are at the point the book stops helping you. You now need other
information that comes from other sources. A lot of it is in papers from the Frequency
Control Symposium. Some of it is in books published back in the 1920’s and 1930’s. 

After you have done the intermediate work to shape the blank and do all of that 
stuff, you need to plate on the electrodes and get it on frequency. After that it needs 
to be sealed in a package. Depending on the process you decide to use that could 
mean access to a couple million dollars of custom made gear. 

After it’s sealed up (and possibly processed a bit after seal) you test it to see how
you did. Some number will be ok, the rest head into the trash. The good ones go 
into oscillators. Is that 5% or is that 80% … depends on what you are after ….

Bob

> On Oct 24, 2020, at 5:27 PM, Ben Bradley <ben.pi.bradley at gmail.com> wrote:
> 
> On Fri, Oct 23, 2020 at 10:55 PM Wes <wes at triconet.org> wrote:
>> Not exactly the same book but the same author:
>> 
>> "Introduction to quartz crystal unit design"  There seems to be a copy in the UK
> 
>   I see several copies of this in the $20 range on bookfinder.com,
> click "view all matches combined" at the link below. The title "The
> Theory and Design of Quartz Crystal Units" only shows up on Worldcat,
> so appears to be much harder to get, so it's surely much more
> expensive if you find it.
> 
> https://www.bookfinder.com/search/?title=Introduction+to+Quartz+Crystal+Unit+Design&lang=en&st=xl&ac=qr
> 
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