In Reply to: Why play with 'fire"? posted by cheap-Jack on September 16, 2008 at 07:29:11:
Ok, not a popular opinion, but some switchers work just fine. Forget the cheezy PC supplies. Look for Lambda, Kepco, Vicor etc.
Some of the better DC-DC converters are great for tube filaments.
You're typically better trimming them down than up, and the prior suggestion of using a 12v supply is great.
You can also get 3.3v supplies - put 2 in series with a bit of adjustment down.
- Gary
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Follow Ups
- 'cause it works fine. - Gary Kaufman 09/16/0812:25:09 09/16/08 (0)