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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 1, 2015 at 17:34:27:
Did you measure the voltage between the same two nodes before removing the previous rectifiers and replacing with Schottky's? Schottky's have a very low voltage drop compared to almost any other class of rectifier. When you're working with filament voltages that are already low compared to B+, etc, then changing from some other rectifier to Schottky's can have a significant effect, just like the one you are measuring, where it seems your voltage is high-ish (because less voltage is being dropped across the Schottky bridge than was dropped across the previous rectifiers). So, that's one issue, but your final V of 13.1 is not so bad, as long as it is being seen across the two tubes in series, as others have mentioned repeatedly. 13.1VDC is too high for parallel connection of 6SN7 filaments, obviously. Hope that helps.
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- effect of Schottky bridge - Lew 08:36:24 06/02/15 (0)
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