• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Parallel Single Ended Amplifier Design using Acro TO-290s?

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HollowState

HollowState

Member
Joined 2006
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.
 
diamondsouled

diamondsouled

Member
Joined 2007
HollowState said:
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.
Click to expand...

I guess with a single tube, 807 or KT66, you'd get about 8 watts?

Cheers

Lar
 
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