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.
Cheers,
Magnus
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