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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: 3 reasons why UL is inferior to triode or pentode. posted by sser2 on March 17, 2007 at 16:12:09:
All forms of NFB work best when things are reasonably linear to begin with. It's a matter of smaller error correction signals.To get MAX. performance out of UL topology, an O/P trafo with a separate screen grid winding is necessary, along with a separate, regulated, B+' supply. The objections you gave are overcome. Surprise (NOT), the expense factor surfaces, again.
UL topology is a form of local NFB. Frequently, local NFB is less problematic than loop NFB.
Eli D.
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- Re: 3 reasons why UL is inferior to triode or pentode. - Eli Duttman 03:08:02 03/18/07 (0)
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