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From: Omicron on 7 May 2010 12:46
I need to have a Bridge Rectifier 250V 40a ..... unfortunately there
is no such thing available as far as Google can see

Can anyone tell me what size Diodes that would work ? I am just a
hobbyiost and anything for instructions that I have found, look like
they need a College COurse to navigate.

Any suggestions or simple equation ?

thanks
From: Dave M on 7 May 2010 13:59
Omicron wrote:
> I need to have a Bridge Rectifier 250V 40a ..... unfortunately there
> is no such thing available as far as Google can see
>
> Can anyone tell me what size Diodes that would work ? I am just a
> hobbyiost and anything for instructions that I have found, look like
> they need a College COurse to navigate.
>
> Any suggestions or simple equation ?
>
> thanks

I assume that you're in the USA.
Mouser has some rectifier modules that will fill your needs. Go to
www.mouser.com.and search for part number GBPC4004 or GBPC4006. The
GBPC4004 unit is rated at 400V/40A, and the GBPC4006 is rated for 600V/40A.
Either will work for your application (assuming no major physical mounting
problems).
Mouser has no minimum order, and reasonable shipping rates (for shipments in
the USA).

--
David
dgminala at mediacombb dot net



From: Gareth Magennis on 7 May 2010 14:51


"Omicron" <omicron89(a)yahoo.com> wrote in message
news:74f52ab7-fc4e-4cc3-870e-237429108826(a)42g2000prb.googlegroups.com...
> I need to have a Bridge Rectifier 250V 40a ..... unfortunately there
> is no such thing available as far as Google can see
>
> Can anyone tell me what size Diodes that would work ? I am just a
> hobbyiost and anything for instructions that I have found, look like
> they need a College COurse to navigate.
>
> Any suggestions or simple equation ?
>
> thanks



http://uk.farnell.com/jsp/search/browse.jsp?N=500006+1004156+5056578&Ntk=gensearch_001&Ntt=bridge+rectifier&Ntx=mode+matchallpartial&No=0&getResults=true&appliedparametrics=true&locale=en_UK&catalogId=&prevNValues=500006+1004156&filtersHidden=false&appliedHidden=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D500006%2B1004156%26Ntk%3Dgensearch_001%26Ntt%3Dbridge%2Brectifier%26Ntx%3Dmode%2Bmatchallpartial%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Den_UK%26catalogId%3D%26prevNValues%3D500006%2B1004156

From: Allodoxaphobia on 7 May 2010 15:13
On Fri, 7 May 2010 19:51:54 +0100, Gareth Magennis wrote:
> "Omicron" <omicron89(a)yahoo.com> wrote in message:
>> I need to have a Bridge Rectifier 250V 40a ..... unfortunately there
>> is no such thing available as far as Google can see
>>
>> Can anyone tell me what size Diodes that would work ? I am just a
>> hobbyiost and anything for instructions that I have found, look like
>> they need a College COurse to navigate.
>>
>> Any suggestions or simple equation ?
>
> http://uk.farnell.com/jsp/search/browse.jsp?N=500006+1004156+5056578
&Ntk=gensearch_001&Ntt=bridge+rectifier&Ntx=mode+matchallpartial
&No=0&getResults=true&appliedparametrics=true&locale=en_UK
&catalogId=&prevNValues=500006+1004156&filtersHidden=false
&appliedHidden=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp
%3FN%3D500006%2B1004156%26Ntk%3Dgensearch_001%26Ntt%3Dbridge%2Brectifier
%26Ntx%3Dmode%2Bmatchallpartial%26No%3D0%26getResults%3Dtrue
%26appliedparametrics%3Dtrue%26locale%3Den_UK%26catalogId%3D
%26prevNValues%3D500006%2B1004156

"Simple" , indeed.
From: GregS on 7 May 2010 16:24
In article <74f52ab7-fc4e-4cc3-870e-237429108826(a)42g2000prb.googlegroups.com>, Omicron <omicron89(a)yahoo.com> wrote:
>I need to have a Bridge Rectifier 250V 40a ..... unfortunately there
>is no such thing available as far as Google can see
>
>Can anyone tell me what size Diodes that would work ? I am just a
>hobbyiost and anything for instructions that I have found, look like
>they need a College COurse to navigate.
>
>Any suggestions or simple equation ?
>
>thanks


A bridge only works 1/2 cycle so you would need at least 20 amp
diodes. I don't know what voltage your at but
400 volts sounds pretty good to me.

Maybe two of each, NTE5920, NTE5921
Thats when you don't want to isolate the mounting from the heatsink, otherwise
just take your pick.

Bad example as far as COST !!!
I don't have time right now to shop.

You can also add diodes in parallel to gain amperage.
I found some 40 amp 400 volt bridges, but seem hard to find stocked items.

greg
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