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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: Another query from Audio Note camp -300B filament supply. posted by Wojciech on April 2, 2015 at 18:52:23:
It really depends on what your goals are. There are a few 7805's that are rated to deliver enough current (most 7805's are 1A regulators), and those will certainly work to deliver 5V at 1.25A. There's some convenience here, as you could probably put a Schottky bridge on a 6.3V winding with a cap input filter and get enough voltage for the 7805 to operate.
For most of these efforts, the hum generated by AC on the filaments is the driving force behind altering these design aspects. If your 7805 regulator gets your noise floor down below 1mV, but you can add ten more components and get the noise floor down to 700uV, should you really do that? Who is going to notice? Will you then need a 7V winding to make all this work?
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- RE: Another query from Audio Note camp -300B filament supply. - Caucasian Blackplate 19:30:24 04/02/15 (0)
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