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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: Capacitor Values Why so high? & What can I do? posted by Squiddy on January 1, 2006 at 14:30:35:
The voltage across the cap is due to the DC plate voltage of the 6sn7. The cap isolates the DC component of the 6sn7 from the output, allowing only the AC through. The cap has to be rated for the DC+AC voltage, as this is what it sees. At switchon, the tube will be drawing no current, therefore the plate voltage will be the same as the B+ voltage. It is not uncommon for 6sn7's to be run from a B+ of 400V. Thus, the cap may be seeing 400VDC on one side and 0VDC on the other. Hope this helps.Best regards,
Mike Spence
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- Re: Capacitor Values Why so high? & What can I do? - Mike Spence 16:58:57 01/01/06 (0)
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