Engineering360 has asked its users about the latest design trends and features related to Crystals. They have also shared their product applications and tips on how to buy and use these products.
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What are some of the applications you have used crystals for?
18 answers
Starting from telecommunication such as Mobile Phone, Wlan, wi Max, dect , Data trunking systems, Tetra, PMR, ISM applications, pace maker and many more.
~Joerg K., Technical Manager, Essen, Germany
Solar cells, cell phone electronics, night vision devices, X-ray imaging, medical X-ray imaging, nuclear medicine, high energy physics.
~Bill H., Senior Scientist, Boston, MA
Local reference oscillator for network timing interfaces. CPU reference clock. High speed SERDES reference clock.
~Bob R, Supply Chain Management - Tech Advisor, Dallas, TX
Oscillator for measuring deposition thickness of thin film.
~Faculty/Staff, Provo, UT
GPS Base Stations Military Radar and IED detector.
~Hank R, Design Engineer, Ronkonkoma, NY
Telecommunications, Military applications,
~Marketing/Sales, Litchfield Park, AZ
Oscillator application, MCU clock, etc...
~Shanlong Z, Engineer, Guangzhou, China
Building amateur transceivers.
~Jay F, Faculty/Staff, Rochester, NY
Oscillator frequency control.
~Engineering, Design, Goderich, Canada
Timing circuits, RF circuits
~Other, Ottawa, Canada
All possible applications
~Ludmila H, Sales engineer, Stockholm, Sweden
Deep sea ROV electronics
~Engineer, Davis, CA
All type of oscillators.
~Juerg K, Manufacturer, Grenchen, Switzerland
Filters Radio channel
~Other, Kangaroo Flat, Australia
Gps disciplinec ocxo
~Engineering, Other, Budapest, Hungary
Microphone elements
~Manufacturing, Ellenboro, NC
~Geoff L, Design Engineer, Mechanicsburg, PA
Electronic Filters
~Engineering, Design, Kansas City, MO

Please share with us any “non-standard” applications that crystals have been used for.
6 answers
Non standard application are Crystals for Oil drill equipment; high shock device for military application, extreme temperature range device for sensor application up to 250°C
~Joerg K., Technical Manager, Essen, Germany
Monitoring thin film deposition thickness by exposing crystal to deposition.
~Faculty/Staff, Provo, UT
Smart Cards, Medical implantable devices, Drilling for Oil.
~Juerg K, Manufacturer, Grenchen, Switzerland
M1 Abrams upgrade F35 Joint Strike Fighter
~Hank R, Design Engineer, Ronkonkoma, NY
It is difficult to say what is a standard and non standard application. Crystals are today used within almost every area.
~Ludmila H, Sales engineer, Stockholm, Sweden
MCXO Nucleur Hardened.
~Geoff L, Design Engineer, Mechanicsburg, PA

Do you know of any disastrous mistakes that occurred due to the incorrect usage of crystals?
3 answers
Worst case - oscillation can stop and if this is major clock frequency for PC what ever a complete system can fail. Can not remember which time, but for satellite this happened in the past and this of course is a disaster. Also if base stations may fail due to such a problem, many people are affected.
~Joerg K., Technical Manager, Essen, Germany
Wrong load capacitance resulted in too small pulling for set frequency.
~Geoff L, Design Engineer, Mechanicsburg, PA
Too little oscillator allowance.
~Juerg K, Manufacturer, Grenchen, Switzerland

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