[time-nuts] Early WWV Oscillator

Azelio Boriani azelio.boriani at screen.it
Tue Aug 14 21:21:11 UTC 2012


Very interesting the "switching bridge" technique of the AN266. Sure that
it doesn't add the switching noise to the oscillator?

On Tue, Aug 14, 2012 at 10:49 PM, Brooke Clarke <brooke at pacific.net> wrote:

> Hi Ron:
>
> Rick Karlquist knows about the HP E1938 Ovenized Crystal Oscillator that
> makes use of isothermal design to achieve precision temperature control.
> http://www.prc68.com/I/HPE1938.shtml
>
> Have Fun,
>
> Brooke Clarke
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
>
>
> Ron Ward wrote:
>
>> HI Robert:
>> WOW! Thanks.
>> I need to build a double oven for my thunderbolt and set it to about 50
>> Degrees C.
>>
>> I am really just trying to reduce the 24 hour temperature range.
>>
>> I am looking at an application note from National Semiconductor, AN 266,
>> for a precision oven. It claims .001 degree C!
>>
>> The internal oven for the Trimble Oscillator is most likely not as good
>> as the one featured in the application note.
>>
>> Any ideas?
>>
>> Thanks again,
>> Ron
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Robert Atkinson
>> Sent: Tuesday, August 14, 2012 1:21 PM
>> To: Time Nuts
>> Subject: [time-nuts] Early WWV Oscillator
>>
>> Came across this when browsing
>>
>> \http://nistdigitalarchives.contentdm.oclc.org/cdm/singleitem/collection
>> /p16009coll3/id/34
>>
>> Robert G8RPI.
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>
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