Groups > sci.electronics.components > #6379

Re: IC test clip with LEDs

From	not@telling.you.invalid (Computer Nerd Kev)
Newsgroups	sci.electronics.components, sci.electronics.misc
Subject	Re: IC test clip with LEDs
Date	2018-10-17 22:34 +0000
Organization	Aioe.org NNTP Server
Message-ID	<pq8ddt$k9h$1@gioia.aioe.org> (permalink)
References	<pq85b0$f6c$1@dont-email.me>

Cross-posted to 2 groups.

Show all headers | View raw

In sci.electronics.components James Harris <james.harris.1@gmail.com> wrote:
> I remember years ago seeing a clip that would fit over an IC and show 
> the logic state of each pin on an LED (or an LED pair). Something like this
> 
> https://uk.farnell.com/3m/923690-08/test-clip-dil-8way/dp/178270
> 
> Do such clips still exist but with LEDs on top and what are they called?

This is my take on such a device:
http://computernerdkev.heliohost.org/logicvis/index.htm

Another DIY design was published in the Aug. 1987 issue of the
Australian version of "Electronics Today International", with the
largely inaccurate name of "In-Circuit Digital IC Tester".
Therefore I made it available on my webpage about DIY IC tester
designs:
http://computernerdkev.heliohost.org/ictesters/index.htm

As noted in my description there, it powers the LEDs from the outputs
of the chip that it's clipped to, which might cause issues in
circuits that can't supply enough extra current.

Similar pre-built devices were sold at the same time, but I don't
know of any still available.

-- 
__          __
#_ < |\| |< _#

Back to sci.electronics.components | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

IC test clip with LEDs James Harris <james.harris.1@gmail.com> - 2018-10-17 21:16 +0100
  Re: IC test clip with LEDs not@telling.you.invalid (Computer Nerd Kev) - 2018-10-17 22:34 +0000
    Re: IC test clip with LEDs James Harris <james.harris.1@gmail.com> - 2018-10-18 17:39 +0100
      Re: IC test clip with LEDs Ralph Mowery <rmowery28146@earthlink.net> - 2018-10-18 12:48 -0400
      Re: IC test clip with LEDs not@telling.you.invalid (Computer Nerd Kev) - 2018-10-18 21:51 +0000
        Re: IC test clip with LEDs James Harris <james.harris.1@gmail.com> - 2018-10-20 11:50 +0100
          Re: IC test clip with LEDs Computer Nerd Kev <not@telling.you.invalid> - 2018-10-21 08:19 +0000
      Re: IC test clip with LEDs Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-23 12:08 -0400
        Re: IC test clip with LEDs jjhudak4@gmail.com - 2018-10-23 11:40 -0700
          Re: IC test clip with LEDs Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-25 09:46 -0400
  Re: IC test clip with LEDs "jfeng@my-deja.com" <jfeng@my-deja.com> - 2018-10-17 15:56 -0700
    Re: IC test clip with LEDs James Harris <james.harris.1@gmail.com> - 2018-10-18 17:40 +0100
  Re: IC test clip with LEDs three_jeeps <jjhudak@gmail.com> - 2018-10-18 13:41 -0700

csiph-web