[TechAssist] Re: Home made variable DC Power Supply
- From: "Warren C." <warrenca@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 01 Aug 2003 19:04:15 -0400
Jerry and All
Thanks for your replies thus far. The only number written on the IC is
.....IC321 that's it.
You'd think that would be a location number but no IC321 is the actual number.
Anyone have a source for ESR testers in Canada?
J Silverman wrote:
> Are there any numbers on the top or side of the IC?
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> 864 232 3889
> Fax 271 2080
> mailto:greentron@xxxxxxx
> ----- Original Message -----
> From: "Warren C." <warrenca@xxxxxxxxx>
> To: "techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, August 01, 2003 12:52 AM
> Subject: [TechAssist] Home made variable DC Power Supply
>
> > Hi All
> >
> > My old DC PS finally Quit regulating, problem is it was built so many
> > years ago
> > that I no longer have the schem.
> > It controls the Voltage output from 35 V down to about 1.5V
> > The current can be adjusted from 2A down to about 5ma.
> >
> > I've found some bad caps and replaced them but it still does not
> > regulate down below
> > 10 V and it used to.
> > The main problem (I think) is the reg. IC# is IC321 and I can't find it
> > or cross it.
> > It is a 5/16" can type with 8 legs on it. The IC controls a large heat
> > sinked T O 3 trans.
> >
> > Does anyone have info on this IC??
> > I would welcome your schematics for similar home made PS's
> >
> > Secondly where in Canada can I buy a ESR cap tester. No insult but I
> > had a bad experience
> > years ago with an electronics company in the States. I sent down a mail
> > order for about $350.00
> > It was cashed but never received any thing for it and no replies
> > afterwards..!
> >
> > TIA
> >
> > Warren Campbell
> > Campbell's TV & Appliances
> > Cannington On
> > Canada
> >
> >
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