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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: Re: Lower Purity W: Good? Bad? Neither? posted by SBB on November 22, 2002 at 05:49:22:
Good call guys. I did plan on applying inrush limiter to the primary of a digital amp I'm building (20,000uF), but never thought of applying it to the tube amp.You know what, my stock C-J came with a 4A slow blo fuse on heater supply. But it blew up once a while even the total current draw is only 2.1A. The manufacturer now recommends 5A fuse and I'm expecting it to last much longer. Still, I think an inrush limiter is in order.
The amp is a modern design so I would like to change voltage as little as possible. In this case, with steady state total heater current of 2.1A (~14A turn-on surge), is KC006L-ND from Digikey good enough?
It has the specs of:
No load res @ 25C: 10ohm
Max. steady state current: 5A
Approx. res @ 5A: 0.18ohmOr the next one may be good too (KC007L-ND):
No load res @ 25C: 16ohm
Max. steady state current: 4A
Approx. res @ 5A: 0.27ohmMaybe the later one will have close to 0.2ohm at 2.1A steady state. Then it can simply replaces the in-line 0.2ohm voltage dropping resistor I plan to use.
Ehien
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Follow Ups
- Inrush limiter - Ehien 10:29:44 11/22/02 (2)
- 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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