tag:dreamwidth.org,2017-04-09:2976728xiphmontxiphmontxiphmont2018-02-09T08:49:00Ztag:dreamwidth.org,2017-04-09:2976728:90317A new ThinkPad LED inverter design!2018-02-09T08:49:00Z2018-02-09T08:49:00Zpublic4<p>When I first offered LED conversion kits, I got the inverters I
modded for free from forum members who sent their spares,
supplemented by bulk lot buys of used boards from eBay. For the
first 200 kits or so, I paid on average about $5 a board, which I
then modded with the custom LED hardware.
<p>The supply of X60 and X61 inverters is drying up, which is not to
say they're no longer available, but they're now well into legacy
pricing. Min price is about $20 apeice now.
<p>Building complete inverters from scratch was probably always cost
effective, but I just couldn't find the discontinued connectors I
needed. I think I have those secured now, so I spent a few days
of free time consing up a new inverter board design.
<p><img src="https://people.xiph.org/~xiphmont/thinkpad/TLD4-X6.png">
<p>The prototype is off to OSHPark for fabbing! It's nearly the
same schematic as the TLD3, but the layout is from-scratch to
make it easier to assemble.</p></p></p></p></p><br /><br /><img src="https://www.dreamwidth.org/tools/commentcount?user=xiphmont&ditemid=90317" width="30" height="12" alt="comment count unavailable" style="vertical-align: middle;"/> comments