Hammond tranny ratings

[dynaman]

Hammond power P-T270HX Secondaries of 275-0-275 @ 200mA. Enough for an Express with EL34's? Chris

[Allynmey]

Voltage may be a bit low! You want to see about 400V on the plates.

Allynmey

[rhinson]

hello there, actually since this is a 115v pri you might get close if your wall voltage is 120v + in your neighborhood. you'll probably get in the 370-380 range------i think francesca ran at about 394v on the plates i believe. but moose's power trannie is not that much more expensive than this trannie (unless you already have the hammond) and has a way thicker stack, much beefier ratings, made of better steel and will run much cooler---that hammond will run pretty warm with 120v+ on the 115v pri.----it'll work fine but moose's iron is a better choice all around.
rh

[dynaman]

Yeah, I already have this tranny. I was concerned with the current rating of the high voltage secondaries. Can I squeak by?

[rhinson]

yeah the hv.sec @200ma is fine and so are the rest. it'll just run a little hot due to it's size and it being a 115v pri. plus since you're not using the 5v winding that gives you extra leeway. rh