Re: Bridge Rectifiers - NEVERMIND Less than $3.00 each new

["RockyTSquirrel" <gafa_usa@xxxxxxxxxxx>]

"nick markowitz"  wrote in message
news:368f1a13-62c6-445b-998b-e6a94b76a808@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

On Jan 10, 8:50 pm, Jim <alarmi...@xxxxxxx> wrote:
> On Jan 10, 3:16 pm, "Bob La Londe" <nos...@xxxxxxxxx> wrote:
>
> > "Bob La Londe" <onebike...@xxxxxxxxx> wrote in
> > messagenews:igf70p$r48$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> > >I am working retrofitting a control system (hobby stuff - (industrial
> > >hobby)) and I was considering reusing some of the components.  One of
> > >the
> > >things is a 230-60V transformer that feeds into a modularized bridge
> > >rectifier to produce 84VDC under load.  The transformer is fine, the
> > >caps
> > >(BIG caps) need to be tested, but I was wondering if the diodes in the
> > >rectifier have a predictable service life?  I can make my own easily
> > >enough
> > >with a handful of heavy diodes, but I really like the neat packaging of
> > >this modular one.  One less thing to have to bread board.   This is NOT
> > >a
> > >low current application.
>
> > Nevermind.  I just looked for the heck of it.  400V 25 amps.  2.75 each
> > new.
> > ROFL.
>
> That's hardly worth the skin off your fingers ..... it took to type
> the question. ;-)

I pulled a Sq-D rectifier out of service for door chime service last
year that was still working but not needed that was built in 1934
pretty amazing how long some of that old stuff holds up.
I have a 1940s era  1000 watt AM  Collins transmitter up at  the
station we keep in reserve duty and it fires up every few weeks and is
strong as ever. I got pictures of it on my face book wall all fired up
with the tubes lighted pretty cool.


Nick,   keep those big ole  tubes  clean,  a little hand grease  and  you'll
be looking for a replacement..

keep an eye on those caps too,  if they start to fade  they can take out a
transformer  pretty fast..
Hopefully  you'll hear the ac buzz  first..  ;-)

RTS