W3FPR - Don Wilhelm wrote:
I can understand Q1 and Q2 getting hot from a shortcircuit somewhere on the
8T and 8R lines, but I just don't understand how Q3 and Q4 would get hot -
they are just switches and should be fully conducting or fully
non-conducting (and therefore should dissipate very little heat).
Yes, I recently was dealing with a shorted 8R and was quite convinced
that all four transistors were hot.
In fact it was just that Q2 was so hot it was heating up the other
transistors nearby....and it was hard to tell Q2 was hotter than the
others because it was too hot to touch for long enough to tell.
73 de Maggie K3XS
--
-----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress /
----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/
---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to /
--/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/
-/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/
/________________(_/_(_/_______AMSAT 32844_/<[EMAIL PROTECTED]>/
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