[time-nuts] Thunderbolt Power Supply Question

Ed Palmer ed_palmer at sasktel.net
Mon Apr 26 11:49:54 EDT 2010

Hi Paul,

Yes, I've read that page a couple of times, but it doesn't say whether 
the Ault, Meanwell, or Acopian power supplies have a 'regulated' or a 
'close enough' +12 supply.  I think that the two variable power supplies 
would be well regulated.  I can pretty well guarantee that the ATX power 
supply has a 'close enough' 12V supply.  But the two variable supplies 
are most likely linear while the others are switchers.  This muddies the 
question of 'regulated' vs. 'close enough' with the idea of 'switching 
supply' vs. 'linear supply'.


paul at greenrover.demon.co.uk wrote:
> On 26/04/2010 09:02, Ed Palmer wrote:
>> In the Thunderbolt the +12 runs the oscillator. Won't an unregulated,
>> but relatively steady, +12 supply degrade the performance of the
>> oscillator or does the Tbolt have a built-in regulator to deal with 
>> this?
> There is some interesting reading on this here:
> http://www.leapsecond.com/pages/tbolt/noise.htm

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