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

[Magnus Danielson]

Hi,

If I where able to do that with helping hands in a lab and get a few
crystals that actually work and produce oscillating oscillators, even if
the frequency and Q isn't anything near stellar, that would still have
value. It would be gained experience, but not really anyway near
production quality knowledge.

Cheers,
Magnus

On 2020-10-25 00:14, Bob kb8tq wrote:
> 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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