<div dir="ltr"><div>Thank you to everyone for the responses.</div><div><br></div><div>So, it seems it was a way to make a 40 pin socket when you don't have a 40 pin socket was the right answer.<br></div><div><br></div><div>Ingo, your information about it being used to solder both sides of a header on boards before plated through holes makes very good sense to me! I've seen some very busy boards using 40 pin CPUs!</div><div><br></div><div>I remember seeing DIY kits from back in the 1990s where you had to solder a jumper wire on both sides of the board. It surely would have been a difficult fault to debug if you hadn't followed the instructions for the project properly.</div><div><br></div><div>/Edward<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, 1 Oct 2022 at 01:45, Ingo Debus via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;"><br><div><br><blockquote type="cite"><div>Am 30.09.2022 um 15:26 schrieb Vladimir Pantelic via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a>>:</div><br><div><span style="font-family:Helvetica;font-size:14px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;float:none;display:inline">it's like a 40-pin precision socket but without the plastic, you solder the pins then remove the carrier and then insert the IC</span><br style="font-family:Helvetica;font-size:14px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><br style="font-family:Helvetica;font-size:14px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"></div></blockquote></div><br><div>In the past we used these a lot. Since they can be soldered on both sides of the PCB, they are useful for double-sided boards with non-plated-through holes.</div><div><br></div><div>Ingo</div></div>_______________________________________________<br>
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