Re: Charging Capacitors

What is the light bulb for and how do you use it?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dave Halliday" <dh@...>
wrote:

>
> That would be best. Use a full-wave rectifier and a 25 watt

lightbulb

> between the rectifier and the cap.
> Whole process should take a day or so.
>
> Dave
>
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Larry Olson
> > Sent: Friday, June 02, 2006 12:31 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: RE: [CAD_CAM_EDM_DRO] Re: Charging Capacitors
> >
> >
> > Or can I run the transformer on 110 (single leg and neutral)?
> >
> > -----Original Message-----
> > From: Larry Olson
> > Sent: Friday, June 02, 2006 12:11 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: RE: [CAD_CAM_EDM_DRO] Re: Charging Capacitors
> >
> > I've got a 120VAC variac but my transformer is 220. Can I

connect the

> > variac to one of the mains legs and vary the voltage that way?
> >
> > Larry Olson
> >
> > -----Original Message-----
> > From: Dave Halliday [mailto:dh@...]
> > Sent: Friday, June 02, 2006 11:24 AM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: RE: [CAD_CAM_EDM_DRO] Re: Charging Capacitors
> >
> > And don't use a wall-mount light dimmer, this is not a variable
> > transformer, it passes the full 110VAC just chopped up.
> >
> > Wanliker's recomendation of a battery charger is a good one.
> >
> > Dave
> >
> > > -----Original Message-----
> > > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of rrrevels
> > > Sent: Friday, June 02, 2006 10:04 AM
> > > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > > Subject: [CAD_CAM_EDM_DRO] Re: Charging Capacitors
> > >
> > >
> > > A friend of mine rebuilds old amateur radios (tube type) and

he says

> > > he reforms the capacitors using a variac. He starts the
> > voltage very
> > > low and slowly brings it to normal over several hours.
> > >
> > > Hope this helps.
> > >
> > > Russ
> > >
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "oldpayphones"
> > > <larry@> wrote:
> > > >
> > > > I have some used 200VDC 5400UF capacitors from a 1970's
> > > Bridgeport that
> > > > have been sitting for a couple of years and I was wondering
> > > if there is
> > > > a correct procedure for charging them initally. I have had
> > > stereo PS
> > > > caps explode after sitting for some time.
> > > >
> > > > Thanks,
> > > > Larry Olson
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
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wanliker@...,

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> > aol://5863:126/rec.crafts.metalworking or go thru Google.com
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> > if you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider
> > this to be a
> > sister site to the CCED group, as many of the same members are

there,

> > for OT subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
> > POSTING THEM.
> > DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
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wanliker@...,

> > timg@...
> > Moderator: pentam@... indigo_red@... davemucha@...
> > [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> > aol://5863:126/rec.crafts.metalworking or go thru Google.com
> > to reach it
> > if you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider
> > this to be a
> > sister site to the CCED group, as many of the same members are

there,

> > for OT subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
> > POSTING THEM.
> > DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
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> > wanliker@..., timg@...
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> > davemucha@... [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> > aol://5863:126/rec.crafts.metalworking or go thru Google.com
> > to reach it if you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> http://groups.yahoo.com/group/jobshophomeshop I consider this to

be a

> sister site to the CCED group, as many of the same members are

there,

> for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING

THEM.

> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>