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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Inrush limiter posted by Ehien on November 22, 2002 at 10:29:44:
My experience with inrush limiters is that you need to size them as close as possible to their max current rating if you want min resistance/voltage drop when hot because their temp/resis curve is so nonlinear. Based on conditions posted so far (2.1A continuous at filament trans pri) I'd be more inclined to use the KC008 version:Cold resis = 47 ohm
Hot resis = 0.49 ohm
Max current = 3.0AYou might even get away with the KC009 (the one I use most often)
Cold resis = 120 ohm
Hot resis = 1.18 ohm
Max current = 2.0ASince these things are relatively inexpensive, I've purchased a range of them and experiment to find the best match. I've also parallelled them for increased current rating. If this is done, I find they operate best if in physical contact with each other.
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Follow Ups
- Re: Inrush limiter - Steve O 11:37:42 11/22/02 (1)
- Re: Inrush limiter - Ehien 13:59:06 11/22/02 (0)
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