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Re: 6AS7 on low heater voltages

81.31.233.132

Posted by Duncan on June 12, 2006 at 13:56:24

In Reply to: Re: 6AS7 on low heater voltages posted by Lew on June 12, 2006 at 08:27:11:

Yes, I'll probably get another transformer for the heater just to be safe. I'm using it for a preamp circuit and it's kinda overkill, but it's what I had on hand, only the heater supply isn't up to the task so I'm using a 5volt tap that's available.

I guess it's the chemistry and physics of the metals that simply require the 6.3volts. I know 12volt spotlights will live shorter on lower voltages too, so something goes on at the optimum temperature that I just dont understand.

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