Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

He has posted a PNG of the schematic on the Electronics_101 Files area:

http://groups.yahoo.com/group/Electronics_101/files/Constant%20Current%20Source/ireg2.png

Discussion of the specific merits of the design and its construction should occur on that group.


Steve Greenfield AE7HD

--- In Homebrew_PCBs@yahoogroups.com, Vicent Colomar Prats <vicentecolomar@...> wrote:
>
> Me too, interested in that design.
>
>
> 2012/11/29 Kevin Byrne <kbyrne10@...>
>
> > ∗∗
> >
> >
> > I would also like to see your design. Is it posted yet? Kevin
> >
> > ________________________________
> > From: Rick Sparber <rgsparber@...>
> > To: Homebrew_PCBs@yahoogroups.com
> > Sent: Wednesday, November 28, 2012 11:36 PM
> > Subject: RE: [Homebrew_PCBs] Want to plate drill holes for your double
> > sided PCB's
> >
> >
> >
> >
> > I'll certainly enjoy studying it.
> >
> > Rick
> >
> > -----Original Message-----
> > From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> > On Behalf Of smilingcat90254
> > Sent: Wednesday, November 28, 2012 9:15 PM
> > To: Homebrew_PCBs@yahoogroups.com
> > Subject: [Homebrew_PCBs] Want to plate drill holes for your double sided
> > PCB's
> >
> > I just posted on electronics-101 with an offer to post a constant current
> > source design and theory of operation for use in plating PCBs.
> >
> > If anyone is interested in 0-5 AMP constant current source speak up and I
> > will post a schematic, BOM, and a layout here. It's relatively simple
> > design. Power source for the circuit comes from an old 12V car battery
> > charger. The stupid ones which doesn't know when the battery is topped off.
> > They can supply 10,20 30AMPS at 12V.
> >
> > I'm in a process of setting up a plating for my PCB's thus I designed a
> > circuit for such use. component count was one reference supply voltage IC,
> > 7
> > small signal transistors, one pot, trim pot optional, Analog panel meter so
> > you know what you are putting out, power transistors and 9 resistors I
> > think
> > one small cap for feedback stabilization filter caps.
> >
> > Sincerely,
> >
> > Ms. smilingcat
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>