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#1
February 4th 04, 09:29 PM
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Attn: Crystal Filter Designers
I just posted "CrystalCalc" to the Downloads section of my web site
(http://mysite.verizon.net/jdrocci/). This nifty little Windows program calculates all the important motional parameters of a quartz crystal with information derived from a few simple measurements. Those of you who are designing crystal ladder filters per the Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful. This is first-cut code. I'd appreciate feedback. Joe W3JDR |
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#2
February 5th 04, 03:05 AM
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Try placing the output of your crystal filter through a capacitive divider
back to the input. You'll get plenty of feedback that way!  The Eternal Squire W3JDR wrote in message ... I just posted "CrystalCalc" to the Downloads section of my web site (http://mysite.verizon.net/jdrocci/). This nifty little Windows program calculates all the important motional parameters of a quartz crystal with information derived from a few simple measurements. Those of you who are designing crystal ladder filters per the Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful. This is first-cut code. I'd appreciate feedback. Joe W3JDR --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/04 |
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#3
February 5th 04, 03:05 AM
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Try placing the output of your crystal filter through a capacitive divider
back to the input. You'll get plenty of feedback that way! The Eternal Squire W3JDR wrote in message ... I just posted "CrystalCalc" to the Downloads section of my web site (http://mysite.verizon.net/jdrocci/). This nifty little Windows program calculates all the important motional parameters of a quartz crystal with information derived from a few simple measurements. Those of you who are designing crystal ladder filters per the Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful. This is first-cut code. I'd appreciate feedback. Joe W3JDR --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/04 |
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