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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: Measure heater voltage---Important!! posted by drlowmu on January 26, 2015 at 06:24:30:
You won't clip the input stage with that voltage unless you remove the feedback, assuming the most common implementation of GNFB applies.(With the feedback removed, some grid current will be drawn before you hit 0)
If you're seeing 7+V on the 6.3V winding, it may be a good idea to see if the primary is a 117V primary (Hammond). The whole amp may be happier with a 6V bucking winding added to the primary to bring 125V out of the average outlet down to 119V.
Edits: 01/26/15
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Follow Ups
- RE: Measure heater voltage---Important!! - Caucasian Blackplate 19:49:51 01/26/15 (1)
- RE: Measure heater voltage---Important!! - drlowmu 20:13:33 01/26/15 (0)
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