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15th October 2009, 06:56 PM
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#1 |
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diyAudio Member
Join Date: Oct 2007
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Parallel Single Ended Amplifier Design using Acro TO-290s?
Have come into some NOS Acrosound TO-290 OTs and was wondering if they would be good to use in a parallel single ended amplifier.
Also wondering if there are some schematics around. Thanks Lar |
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15th October 2009, 07:35 PM
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#2 |
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diyAudio Member
Join Date: Aug 2006
Location: Taxland, New Jersey
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Sorry Lar, these are push-pull transformers and cannot be used as singel ended. Not directly at least. They cannot stand unbalanced DC current in the primary. You would have to para-feed them through a big capacitor in series with the primary while choke loading the tube's plate. And at 12,000 ohm impedance you'd probably be better off with a single tube.
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"The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University |
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15th October 2009, 07:37 PM
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#3 | |
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diyAudio Member
Join Date: Oct 2007
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Quote:
Cheers Lar |
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15th October 2009, 07:42 PM
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#4 |
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diyAudio Member
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__________________
Scienta sine ars nihil est - Science without Art is nothing. (Implies the converse as well) Mater tua criceta fuit, et pater tuo redoluit bacarum sambucus 
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