Piggybacking 74LS logic chips to confirm a suspected fault
cclist at sydex.com
Fri Dec 25 13:29:26 CST 2015
On 12/25/2015 09:32 AM, tony duell wrote:
> My feeling is that for the sort of things most of us do here, a
> turned pin socket is the most reliable of all. Yes, soldering the IC
> directly may have a (slightly) lower risk of bad connections, but
> given that we do (or at least I do) component level repairs, may want
> to remove ICs for testing, etc, there is a risk to the PCB if the IC
> is soldered directly. As you say, cheap sockets are cheap for a
> reason. They do develop bad contacts!
One recalls those execrable low-profile cheap sockets from TI in the
early 70s. Horrible stuff.
Aren't in fact, all wirewrap (board+pin) board sockets machine-pin? I
don't recall seeing one that wasn't. Given the great track record of
wire-wrapped designs that says something, surely.
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