Newsgroups: sci.electronics.design
Subject: Re: Curve Tracers
References: <vhkhcg$2ip8$2@dont-email.me> <673e03a2$4$2783$882e4bbb@reader.netnews.com> <fhhsjj5ptu03hoo99g1ki6s85ffq98t2gb@4ax.com>
From: albert@spenarnc.xs4all.nl
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Date: Sun, 24 Nov 2024 15:34:39 +0100
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In article <fhhsjj5ptu03hoo99g1ki6s85ffq98t2gb@4ax.com>,
john larkin  <jl@glen--canyon.com> wrote:
>On Wed, 20 Nov 2024 10:43:34 -0500, bitrex <user@example.net> wrote:
>
>>On 11/20/2024 6:32 AM, Cursitor Doom wrote:
>>> Gentlemen,
>>>
>>> Curve tracers reveal useful info about the dynamic characteristics of
>>> semiconductors and make designing for same much more predictable and
>>> dependable than relying on spice models and simulation alone. But they're
>>> typically rare beasts and expensive to come by and boat anchor varieties
>>> are seriously heavy and bulky.
>>>   I think therefore that a curve tracer would make an excellent project,
>>> using the X&Y inputs of a scope as the display. Has anyone here attempted
>>> this? I'd be interested to know what the main challenges are likely to be.
>>>
>>> -CD
>>
>>
>>A bit more modern way to do this is get one of those HP data acquisition
>>units like a 34970A with a multiplexer card, and a multi-output PSU that
>>can both be controlled over GP-IB
>
>GPIB ain't modern! It's 50 years old.
>
>Ever read the actual spec? The state diagrams will give you nightmares
>for weeks.

The Dutch Forth user group has a HP plotter 7470A, handboek, spare pens.
 The idea is to have hooked it up to a computer. Apparently not so easy.

Any bids on a double 8" floppy HP9895A?

Groetjes Albert
>
>
>
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