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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: Schottky bridge posted by mashley on June 2, 2015 at 18:47:29:
"Would the led which is presently disconnected in this amp pull the voltage down to where it might seem more err, normal?"
I don't think the LED would draw enough current to make much of a difference.
Do you see the 1 ohm resistor in series with the heater supply? The one between the + output of the bridge and the 4700uf cap?
You could increase it's value to lower the voltage going to the tubes.
"Is it worth thinking about another project for sometime in the future to regulate this supply maybe with a little discrete burson module?"
Other than regulating against fluctuations in your line voltage, the heaters of the tubes don't need to be regulated because their current draw is constant.
Regulation is only needed when the load current changes with the music.
As for the fluctuation of your line voltage, tubes work just fine with the heater voltage +/- 5% of the rating (12.6 in your case) so I wouldn't worry about it.
Tre'
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- RE: Schottky bridge - Tre' 19:03:41 06/02/15 (0)
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