Tube transformer voltage doulbler

[T23]

Well geez, how tall is an 811a tube? This box has alot of clearance inside, it could take anoth inch or so of tube hight with the platecap. it looks like the gu-50s will be a good choice then....


T23

 

[AudioShockwav]

Well geez, how tall is an 811a tube?

Approx 6 1/4 tall when in the tube socket give or take a little and you got to have some clearance as well.
Lot of work for a single 811, when the tubes in there will do about the same output.
Suggestion, Sell that Amp and keep saving for a amp that will provide better service than a sweep tube amp from the start.



73
Jeff

 

[BJ radionut]

Well geez, how tall is an 811a tube? This box has alot of clearance inside, it could take anoth inch or so of tube hight with the platecap. it looks like the gu-50s will be a good choice then....


T23

I again disagree...that tube requires screen voltage:headbang....where is the new transformer going to fit? Was it G2 that requires 250v...plus you will need a bias supply( I think)-
Sorry...
All the Best
BJ

 

[BJ radionut]

Approx 6 1/4 tall when in the tube socket give or take a little and you got to have some clearance as well.
Need at least 9 inches of clear space...with plate cap installed.....

"Lot of work for a single 811, when the tubes in there will do about the same output."


Yep said that also....

"Suggestion, Sell that Amp and keep saving for a amp that will provide better service than a sweep tube amp from the start."
73
Jeff

Yep agree AS....
73
BJ

 

[BJ radionut]

Well geez, how tall is an 811a tube? This box has alot of clearance inside, it could take anoth inch or so of tube hight with the platecap. it looks like the gu-50s will be a good choice then....


T23

GU-50...need 6 inches height min....
12.6 filament voltage...
250v...grid supply...
50 watts total output...????
73
BJ

 

[T23]

Is that output reaction a + or - reaction?



T23