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Old 25th Aug 2019, 10:19 pm   #7
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Crystal oscillator circuit design

If you can find a crystal in an HC-6 or HC25 package, the larger quartz disc is a lot less delicate: the dissipation rating is 10x higher and the ESR is lower. win-win-win.

The small crystal would have been for timing and would have used a CMOS gate in a not-quite-all-there Pierce circuit.

David
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