[time-nuts] newbie question Thunderbolt supply

Magnus Danielson magnus at rubidium.dyndns.org
Sun Aug 26 12:25:39 UTC 2012

On 08/26/2012 02:07 PM, Bob Camp wrote:
> Hi
> The only real disadvantage of a 7812 / 340-12 is it's relatively high drop out voltage compared to a 1764 (or similar). Stability of any of them will be impacted more by thermal issues than anything else. The colder you can keep the 12V regulator, the more stable it will be. The +12 is by far the most sensitive supply line on the TBolt.

Switcher to give a fairly stable voltage, filtered for noise and then 
linear stepdown for the last step. It's been done in high power audio 
amplifiers the last 20 years or so.


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