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I wondered before why no-one seems to have done a clone of the
ua726.<br>
<br>
Doesn't *SEEM* all that complex?!<br>
A nice matched pair (eg LS318) is the main core.<br>
6 transistors (I presume general purpose?), 2 x 6V2 zeners and 6
standard resistors.. - those parts being for the heating element.<br>
<br>
Get the pin placement right, encapsulate it in goo.. <br>
<br>
What am I wrong on? <br>
<br>
[I don't want to fully take on such a project, though could
potentially do a design up for initial testing with a view to
someone running a production in a friendly open-source-ish manner]<br>
<br>
Tom<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 09/09/2015 14:00, . . wrote:<br>
</div>
<blockquote
cite="mid:CAMUkUjRzSoT+=mWxbJtjq1QJWBSyX4OHQ+Uxm=NX7PTFLVV+-g@mail.gmail.com"
type="cite">
<div dir="ltr">Wow don't pay 90$ for that!
<div><br>
</div>
<div>I've bought a few fakes some years ago for about 10-15$
each iirc They worked according to my tech at the time.
It's hard to say if they perform exactly the same, I ended up
putting in a real one in just to be sure.</div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Sep 9, 2015 at 7:42 AM, Synth
Parts <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:synthpartsdotcom@gmail.com" target="_blank">synthpartsdotcom@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Also very suspicious is the pic of the one
with the year 2000 date code and that there's no pics
showing the pins (they were gold on the real ones)...
<div><br>
</div>
<div>Doug </div>
<div><a moz-do-not-send="true"
href="http://synthparts.com" target="_blank">synthparts.com</a></div>
</div>
<div class="HOEnZb">
<div class="h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Sep 9, 2015 at 4:34
AM, Kenny Balys <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:kenny@beatkamp.com" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:kenny@beatkamp.com">kenny@beatkamp.com</a></a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
I doubt that these were ever shipped to, or made
in China so I would look elsewhere. Its hard to
imagine that in the 1970's, Fairchild, in the
height of the cold war, would be manufacturing
vital components such as these in China.<br>
<br>
On 09-09-15 09:29 , Synth Parts wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
I recognize that sellers name as one selling
fake SSM2040s a while back.<br>
Lots of feedback regarding fake parts -<br>
<br>
<a moz-do-not-send="true"
href="http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=polida2008&iid=400613597638&de=off&items=25&which=negative&interval=365&_trkparms=negative_365"
rel="noreferrer" target="_blank">http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=polida2008&iid=400613597638&de=off&items=25&which=negative&interval=365&_trkparms=negative_365</a><br>
<br>
Doug<br>
<a moz-do-not-send="true"
href="http://synthparts.com" rel="noreferrer"
target="_blank">synthparts.com</a><br>
<br>
On Tue, Sep 8, 2015 at 10:30 PM, Larry Dee <<a
moz-do-not-send="true"
href="mailto:mintlake@bctonline.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:mintlake@bctonline.com">mintlake@bctonline.com</a></a>>
wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
Is this the real thing?<br>
<br>
<br>
<a moz-do-not-send="true"
href="http://www.ebay.com/itm/1PCS-CONTROLLED-DIFFERENTIAL-PREAMPLIFIER-IC-FAIRCHILD-TO-100-CAN-10-UA726HC-/400613597638?hash=item5d466e61c6"
rel="noreferrer" target="_blank">http://www.ebay.com/itm/1PCS-CONTROLLED-DIFFERENTIAL-PREAMPLIFIER-IC-FAIRCHILD-TO-100-CAN-10-UA726HC-/400613597638?hash=item5d466e61c6</a><br>
<br>
<br>
<br>
I’m so burned out on this issue – sheeeesh for
$90 it better be NOS.<br>
Tried searching the AH archives for recent
content on this subject but did<br>
not get anywhere. Sorry to be redundant, but
what is the latest word on<br>
this part?<br>
<br>
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<pre class="moz-signature" cols="72">--
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