Hi

This book is an introduction to designing AT cut resonators. It came out
before the SC existed. It’s very much a “starter” book on the subject. He
would do a 1 to 3 day training session and the book was a giveaway as
part of those sessions.

Bob

Attila,

Amazon says (Out of print):

• Publisher : McMurray Press; 1st Edition (January 1, 1968)
• Language: : English
• ASIN : B0007H97C8

Not exactly the same book but the same author:

"Introduction to quartz crystal unit design"  There seems to be a copy in the UK

https://www.abebooks.com/servlet/BookDetailsPL?bi=30743123492&cm_ven=sws&cm_cat=sws&cm_pla=sws&cm_ite=30743123492&clickid=Qzn1vAxnixyLUx7wUx0Mo3bxUkExvSymuVekS80&cm_mmc=aff-_-ir-_-353196-_-77798&ref=imprad353196&afn_sr=impact

Also for what it's worth:

https://archive.org/details/introductiontoqu0000bott/page/n9/mode/2up?q=introduction+to+quartz+crystal+unit+design

Wes  N7WS

On 10/23/2020 2:11 PM, Attila Kinali wrote:

On Fri, 23 Oct 2020 19:32:16 -0400
Bob kb8tq kb8tq@n1k.org wrote:

So, you are saying between Matthys, Frerking, Rhea, Cerda and Parzen
there isn't much value in this book?

Cool, that helps. Thanks!

	Attila Kinali

--
<JaberWorky> The bad part of Zurich is where the degenerates
throw DARK chocolate at you.

Hi

From what I can see, all are essentially editions of the same book, updated
as he continued to do his classes.

Bob

On 10/23/20 6:50 PM, Wes wrote:

In the United States, for works protected by US Copyright, a library can
make single copies of a book that is out of print or not easily
available for use by a single person for research purposes (i.e. not
resale or further duplication)
(that's a gist, not the actual law, but it's close)

Only libraries can do this.
And I don't know if it applies to books published somewhere other than
the US. This is how I got a copy of Snelling, Soft Ferrites, 2nd edition

• JPL library found a copy somewhere, and had it copied. And it's
  published by Heinemann, which is a UK publisher, so maybe it's ok.

There's a copy of Introduction to Quartz Crystal Unit Design by Virgil E
Bottom for sale on thriftbooks.com but it's available to "borrow" on
Archive.org and there are several copies of Theory and Design listed in
various US university libraries on worldcat.org perhaps a friendly faculty
member or student could be of assistance?

On Sat, 24 Oct 2020, 00:21 Attila Kinali, attila@kinali.ch wrote:

Hi

Those authors pretty much only focus on oscillator design. ( = electronics).
Bottom is a “crystal guy”. He focuses pretty much only on how to chop up
a chunk of quartz to get this or that result ( = frequency, temp coef, size, Q ).
Very different areas of interest and not a lot of “crossing over” between them.

So no, it you are looking to come up with an addition to your oscillator design
library, go looking for a copy of one of Dr Rhode’s books rather than one by
Bottom.

Bob

It may not be current, but IMHO it would not be a waste of time read it.  If one wants to extend the knowledge gained from reading the the book to include more current theory I am sure that additional resources could be found.

DaveD

Try Dave Henderson at Artek Manuals. He does the best job scanning things.

DaveD

On Fri, Oct 23, 2020 at 10:55 PM Wes wes@triconet.org wrote:

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

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 10/24/20 3:14 PM, Bob kb8tq wrote:

The guys at APL told me that they start 1000 blanks to get a dozen USOs
for space, of which 4 will actually be packaged as flight units.

That's for a "gotta be the best" sort of application.

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,

Virgil E. Bottom's book "Introduction to Quartz Crystal Unit Design" does contain more than this. It includes a bunch of information  about often unknown characteristics of quartz crystals, which are not covered by "pure" oscillator designers, who often look only on the main resonance mode parameters in their design, which they consider as ideal. Maybe also the (other) overtones and the unwanted B-mode for SC-cut crystals are considered.
Beyond that Bottom is covering such things like an-harmonic spurious modes, coupled modes and activity dips,. These "unwanted" characteristics come into play in practice as surprising and unexplained failures in the field.
In the numerous failure analyses I have done, activity dips and drive level dependence are the most frequent causes of field failure. And I regularly have to teach the customers what this is.
His 1982 book also covers SC-cut crystals with their main characteristics.

I agree that Bottom is primarily a "crystal guy". But it is very advantageous for oscillator  designers to know more about crystal than just the four-element BVD equivalent electrical schematic.
And to learn that its behavior is more complex than these four idealized linear parameters can show.

This is the lesson I want to teach as a physicist AND electronics engineer after 44 years in the crystal & oscillator business.

Regards
Bernd

Hi

Which is why Motorola decided all us “oscillator guys” needed to go to the course ….

Bob