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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: I think you're on the right path posted by LowRedMoon on February 26, 2007 at 10:40:20:
For starters, determine the size and power rating you need. I like to run my resistors at no more that 20% of their wattage rating, to keep temperatures under control and limit the positive tempco most resistors exhibit. In critical places, I go for 10%. Heater supplies are not critical; you will be more subject to line voltage variations.I would likely end up using a standard cheap wirewound; they are very sturdy and come readily in the sizes you are likely to require (somewhere in the <1 ohm range). Non-inductive is unnecessary; your source has lots of L anyway.
I would remind you of the importance and sonic benefit of elevating heaters where necessary. Don't underestimate this consideration. Jones spends a lot of time discussing heaters in the chapters where he actually steps you through building an amp, though I think there are some places prior where he discusses some other issues. Personally, I don't buy into his THINGY design; unneeded, IMO.
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- Resistors aren't all that critical here - KurtP 12:05:52 02/26/07 (0)
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