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

previous by date index next by date
previous in topic topic list  

Subject: RE: [Homebrew_PCBs] what is sulfate of zinc and acidulated water andsaturated copper sulfate crystals ?

From: Malcolm Parker-Lisberg <mparkerlisberg@...>
Date: 2017-01-18

No good for high impedance or high voltage PCBs as it leaves a high resistance conductive film on the non track areas.
It is OK for logic level boards, but beware if the chip has an A-D converter.


Malcolm

I don't suffer from insanity I enjoy it!
Mene, mene, tekel, upharsin
The writing is on the wall.
Ha-ktovet al ha-kir

--------------------------------------------
On Wed, 1/18/17, roylowenthal@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:

Subject: RE: [Homebrew_PCBs] what is sulfate of zinc and acidulated water andsaturated copper sulfate crystals ?
To: Homebrew_PCBs@yahoogroups.com
Date: Wednesday, January 18, 2017, 3:12 AM


 









If you want to tin plate existing copper tracks,
there's an easy way:
 <
http://www.parts-express.com/tinnit-tin-plate--340-188
>
Roy 









#yiv1870771340 #yiv1870771340 --
#yiv1870771340ygrp-mkp {
border:1px solid #d8d8d8;font-family:Arial;margin:10px
0;padding:0 10px;}

#yiv1870771340 #yiv1870771340ygrp-mkp hr {
border:1px solid #d8d8d8;}

#yiv1870771340 #yiv1870771340ygrp-mkp #yiv1870771340hd {
color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px
0;}

#yiv1870771340 #yiv1870771340ygrp-mkp #yiv1870771340ads {
margin-bottom:10px;}

#yiv1870771340 #yiv1870771340ygrp-mkp .yiv1870771340ad {
padding:0 0;}

#yiv1870771340 #yiv1870771340ygrp-mkp .yiv1870771340ad p {
margin:0;}

#yiv1870771340 #yiv1870771340ygrp-mkp .yiv1870771340ad a {
color:#0000ff;text-decoration:none;}
#yiv1870771340 #yiv1870771340ygrp-sponsor
#yiv1870771340ygrp-lc {
font-family:Arial;}

#yiv1870771340 #yiv1870771340ygrp-sponsor
#yiv1870771340ygrp-lc #yiv1870771340hd {
margin:10px
0px;font-weight:700;font-size:78%;line-height:122%;}

#yiv1870771340 #yiv1870771340ygrp-sponsor
#yiv1870771340ygrp-lc .yiv1870771340ad {
margin-bottom:10px;padding:0 0;}

#yiv1870771340 #yiv1870771340actions {
font-family:Verdana;font-size:11px;padding:10px 0;}

#yiv1870771340 #yiv1870771340activity {
background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}

#yiv1870771340 #yiv1870771340activity span {
font-weight:700;}

#yiv1870771340 #yiv1870771340activity span:first-child {
text-transform:uppercase;}

#yiv1870771340 #yiv1870771340activity span a {
color:#5085b6;text-decoration:none;}

#yiv1870771340 #yiv1870771340activity span span {
color:#ff7900;}

#yiv1870771340 #yiv1870771340activity span
.yiv1870771340underline {
text-decoration:underline;}

#yiv1870771340 .yiv1870771340attach {
clear:both;display:table;font-family:Arial;font-size:12px;padding:10px
0;width:400px;}

#yiv1870771340 .yiv1870771340attach div a {
text-decoration:none;}

#yiv1870771340 .yiv1870771340attach img {
border:none;padding-right:5px;}

#yiv1870771340 .yiv1870771340attach label {
display:block;margin-bottom:5px;}

#yiv1870771340 .yiv1870771340attach label a {
text-decoration:none;}

#yiv1870771340 blockquote {
margin:0 0 0 4px;}

#yiv1870771340 .yiv1870771340bold {
font-family:Arial;font-size:13px;font-weight:700;}

#yiv1870771340 .yiv1870771340bold a {
text-decoration:none;}

#yiv1870771340 dd.yiv1870771340last p a {
font-family:Verdana;font-weight:700;}

#yiv1870771340 dd.yiv1870771340last p span {
margin-right:10px;font-family:Verdana;font-weight:700;}

#yiv1870771340 dd.yiv1870771340last p
span.yiv1870771340yshortcuts {
margin-right:0;}

#yiv1870771340 div.yiv1870771340attach-table div div a {
text-decoration:none;}

#yiv1870771340 div.yiv1870771340attach-table {
width:400px;}

#yiv1870771340 div.yiv1870771340file-title a, #yiv1870771340
div.yiv1870771340file-title a:active, #yiv1870771340
div.yiv1870771340file-title a:hover, #yiv1870771340
div.yiv1870771340file-title a:visited {
text-decoration:none;}

#yiv1870771340 div.yiv1870771340photo-title a,
#yiv1870771340 div.yiv1870771340photo-title a:active,
#yiv1870771340 div.yiv1870771340photo-title a:hover,
#yiv1870771340 div.yiv1870771340photo-title a:visited {
text-decoration:none;}

#yiv1870771340 div#yiv1870771340ygrp-mlmsg
#yiv1870771340ygrp-msg p a span.yiv1870771340yshortcuts {
font-family:Verdana;font-size:10px;font-weight:normal;}

#yiv1870771340 .yiv1870771340green {
color:#628c2a;}

#yiv1870771340 .yiv1870771340MsoNormal {
margin:0 0 0 0;}

#yiv1870771340 o {
font-size:0;}

#yiv1870771340 #yiv1870771340photos div {
float:left;width:72px;}

#yiv1870771340 #yiv1870771340photos div div {
border:1px solid
#666666;height:62px;overflow:hidden;width:62px;}

#yiv1870771340 #yiv1870771340photos div label {
color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}

#yiv1870771340 #yiv1870771340reco-category {
font-size:77%;}

#yiv1870771340 #yiv1870771340reco-desc {
font-size:77%;}

#yiv1870771340 .yiv1870771340replbq {
margin:4px;}

#yiv1870771340 #yiv1870771340ygrp-actbar div a:first-child {
margin-right:2px;padding-right:5px;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg {
font-size:13px;font-family:Arial, helvetica, clean,
sans-serif;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg table {
font-size:inherit;font:100%;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg select,
#yiv1870771340 input, #yiv1870771340 textarea {
font:99% Arial, Helvetica, clean, sans-serif;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg pre, #yiv1870771340
code {
font:115% monospace;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg ∗ {
line-height:1.22em;}

#yiv1870771340 #yiv1870771340ygrp-mlmsg #yiv1870771340logo {
padding-bottom:10px;}


#yiv1870771340 #yiv1870771340ygrp-msg p a {
font-family:Verdana;}

#yiv1870771340 #yiv1870771340ygrp-msg
p#yiv1870771340attach-count span {
color:#1E66AE;font-weight:700;}

#yiv1870771340 #yiv1870771340ygrp-reco
#yiv1870771340reco-head {
color:#ff7900;font-weight:700;}

#yiv1870771340 #yiv1870771340ygrp-reco {
margin-bottom:20px;padding:0px;}

#yiv1870771340 #yiv1870771340ygrp-sponsor #yiv1870771340ov
li a {
font-size:130%;text-decoration:none;}

#yiv1870771340 #yiv1870771340ygrp-sponsor #yiv1870771340ov
li {
font-size:77%;list-style-type:square;padding:6px 0;}

#yiv1870771340 #yiv1870771340ygrp-sponsor #yiv1870771340ov
ul {
margin:0;padding:0 0 0 8px;}

#yiv1870771340 #yiv1870771340ygrp-text {
font-family:Georgia;}

#yiv1870771340 #yiv1870771340ygrp-text p {
margin:0 0 1em 0;}

#yiv1870771340 #yiv1870771340ygrp-text tt {
font-size:120%;}

#yiv1870771340 #yiv1870771340ygrp-vital ul li:last-child {
border-right:none !important;
}
#yiv1870771340