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

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

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