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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: Re: not to worry.... posted by kolbay@axelero.hu on September 13, 2005 at 07:39:42:
If I were you, I would consider a seperate fuse for each tube. The fuse should be 1.0 to 1.5 amps. They run a common plate so you can place the fuse link there. The tube has three cathodes and you need a resistance in series for each of them of at least 1 ohm, proababily 7-10 watts each.I think you will find that protection relays have audible effects too. My recommendation since this tube can have some rather spectacular failure modes is to set up a voltage sensing circuit on the output that operates a crowbar circuit on the power supply. This would bypass the need for the relay and would act faster too.
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Follow Ups
- Re: not to worry.... - Ralph 14:24:46 09/15/05 (1)
- Re: not to worry.... - kolbay@axelero.hu 23:17:18 09/15/05 (0)
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