Small PP amp build

[vampwizzard]

Hey folks. Was interested in Tubenit's soldano 3-5 watt PP amp and got the iron.. a Basler BE class 2 PT of unknown power rating. Its 400V no center tap, 6.3V@4A and theres a 28VCT secondary that baffles me. OT is a 15W Hammond.

So, SS rect for sure due to a lack of center tap. Is there any use for that 28V winding? I also made the mistake of gigging that single channel ab763 (socially distanced and whatnot) and now wonder if the PT will handle an AB763 with reverb no trem or a D style.. with the 12AU7 output section from something like a Robrob mini. The heater circuit would be good to go. I can hit Basler up on Monday to get full specs for the high voltage winding mA capacity. Are there any schems floating around for that? 

[PRR]

400V AC rectified wants to be 560V DC. That may not be what you want.

[vampwizzard]

  glad that it was not very expensive. Minor oversight huh? Got it on the chance it did have a center tap and they mis-listed it.

[sluckey]

You could do a choke input filter and get the B+ down to about 360VDC.

[vampwizzard]

I feel id have to dump so much voltage to get it into a territory for a 12A_7 based output from its original state that Id rather just use a proper transformer. That is an interesting, relevant bit of advice though. Thanks Sluckey.

[tubenit]

Tubenit's soldano 3-5 watt PP

Not sure what this is referring to? Can you provide a link.  I haven't built anything like that.

With respect, Tubenit

[vampwizzard]

Tubenit's soldano 3-5 watt PP

Not sure what this is referring to? Can you provide a link.  I haven't built anything like that.

With respect, Tubenit

Probably a case of mnemonics gone wrong on my part. SoLow. https://el34world.com/Forum/index.php?topic=13438.msg127145

[DummyLoad]

Tubenit's soldano 3-5 watt PP

Not sure what this is referring to? Can you provide a link.  I haven't built anything like that.

With respect, Tubenit

Probably a case of mnemonics gone wrong on my part. SoLow. https://el34world.com/Forum/index.php?topic=13438.msg127145

perhaps confused about the author? TIMBO built a low-watt P-P version of the SLO. search for that?

--pete

[DummyLoad]

Tubenit's soldano 3-5 watt PP

Not sure what this is referring to? Can you provide a link.  I haven't built anything like that.

With respect, Tubenit

Probably a case of mnemonics gone wrong on my part. SoLow. https://el34world.com/Forum/index.php?topic=13438.msg127145

https://el34world.com/Forum/index.php?topic=24604.0

--pete

[vampwizzard]

Well.. that’s not the one I was thinking of but that’s exactly what I described!  That’s awesome!