Converting Solid State to Tube Rectification on a Preamp

I am looking to convert my Preamp from a Bridge Rectifier to a Tube Rectifier. Any members have done or knows how to do this. Your help are much appreciated!

zipost05-15-2017 7:09am

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imhififan Details Discussions Posts This discussion Message User 652 posts 05-16-2017 at 08:25am Copy Comment URL Report Comment Edit Delete @salectric A solid state power supply often uses a full-wave-bridge (4 diodes) that can be fed by a power supply winding that does not have a center-tap. Is it possible to use two 6X5 or one 6X5 with 2 Schottky Diodes, and add a heater transformer to make use of the existing power transformer?
noromance Details Discussions Posts This discussion Message User 1,780 posts 05-16-2017 at 12:57pm Copy Comment URL Report Comment Edit Delete You need to use a center-tapped transformer with a 6x5 to achieve full-wave rectification.
imhififan Details Discussions Posts This discussion Message User 652 posts 05-16-2017 at 04:42pm Copy Comment URL Report Comment Edit Delete How about using four rectifier tubes like 6AX4 to create a full-wave bridge?
czarivey Details Discussions Posts This discussion Message User 4,494 posts 05-16-2017 at 04:47pm Copy Comment URL Report Comment Edit Delete ...so you need to check all 4 tubes in tube rectifier bridge if operational?
imhififan Details Discussions Posts This discussion Message User 652 posts 05-16-2017 at 04:59pm Copy Comment URL Report Comment Edit Delete @zipost Do you have the schematics of your Blue Circle 21 preamp? and what is the B+ voltage? BTW, I also found a BC21.1 with outboard power supply on usaudiomart. http://www.usaudiomart.com/details/649027319-blue_circle_211_tube_preamp_with_bcg31_power_supply_fre...

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