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Old 29th May 2007, 08:39 PM   #1
then_dude is offline then_dude  Belgium
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Join Date: Dec 2003
Location: brussels
Default power trannie

hello people, some question

i have an old trannie that was used in an el84pp;

it has 2*115 in and out's are
6.3v at 4 amp
140v next to it = dc 0.19a

what does that last thing means ? that it can only cope with 0.19a of dc current ? but it is ac, can anybody explain;

thanx a lot
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Old 30th May 2007, 06:25 AM   #2
ifrythings is offline ifrythings  Canada
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Join Date: Oct 2005
It means that it can do 190mA constant (AKA DC) if it were in AC it would be double that amount to be able to do the same amount of current.
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Old 30th May 2007, 03:02 PM   #3
then_dude is offline then_dude  Belgium
diyAudio Member
Join Date: Dec 2003
Location: brussels
aha, this is indeed something which i didn't forsee;

that looks promising.

so allow me to pose another two questions

1)so it would be capable of putting out 380ma at AC current ?
cause it will always be used as ac current;

2)now it puts out : 140v at 380ma, after the power trannie there is a voltage doubler. the trannie itself has two primary's 0-115 and 0-115. so there is a switch for 115-230, it depends how you wire it;

but let us now suppose, that i want to get 280 immediatly out of the trannie: that means that i could connet 0-230 on each of the 0-115v . that would mean that i get 280 volt at 190ma, and also that the 6.3 voltage would end up to be 12.6. (but i could wire some heaters in serie: although that would maybe a sonic problem)

but as long the trannie can hold up with the high voltage, in terms of electrical shortcut through the paper it would do fine ? or am i wrong on this one ?

thanx a lot
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