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Robert Baer
Guest

Sun May 03, 2020 2:45 am   



Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

Michael Terrell
Guest

Sun May 03, 2020 3:45 am   



On Saturday, May 2, 2020 at 9:23:00 PM UTC-4, Robert Baer wrote:
Quote:

Mine quit - no vertical output.

Ideas? quotes? Etc?


Join the old Tekscopes group. It moved from Yahoo to GroupsIO. The people who repair old Tektronix gear are there. Unlike Usenet, they do not tolerate foul language and insults, so some of the people on this group would be banned in a hurry. Some members offer kits to make extenders for the 7000 series of scopes.

https://groups.io/g/TekScopes/topics

http://w140.com/tekwiki/wiki/Main_Page has links to places where you can download manuals.


Guest

Sun May 03, 2020 4:45 am   



On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
<robertbaer_at_localnet.com> wrote:

Quote:
Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.


What do you use a curve tracer for?



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard


Guest

Sun May 03, 2020 5:45 am   



jlarkin_at_highlandsniptechnology.com wrote in
news:5rcsafpht5liuqgphu6s6egrhr9jh9rl0r_at_4ax.com:

Quote:
On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
robertbaer_at_localnet.com> wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

What do you use a curve tracer for?




Testing transistors.


Guest

Sun May 03, 2020 3:45 pm   



On Sun, 3 May 2020 03:47:14 +0000 (UTC),
DecadentLinuxUserNumeroUno_at_decadence.org wrote:

Quote:
jlarkin_at_highlandsniptechnology.com wrote in
news:5rcsafpht5liuqgphu6s6egrhr9jh9rl0r_at_4ax.com:

On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
robertbaer_at_localnet.com> wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

What do you use a curve tracer for?




Testing transistors.


Do you use a curve tracer? I don't.



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard

Winfield Hill
Guest

Sun May 03, 2020 3:45 pm   



jlarkin_at_highlandsniptechnology.com wrote...
Quote:

DecadentLinuxUserNumeroUno_at_decadence.org wrote:
jlarkin_at_highlandsniptechnology.com wrote in
Robert Baer wrote:

Mine quit - no vertical output.

What do you use a curve tracer for?

Testing transistors.

Do you use a curve tracer? I don't.


They're pretty handy at times. You get
results a lot faster than with a SMU,
but the SMU gives you precise answers.


--
Thanks,
- Win


Guest

Sun May 03, 2020 4:45 pm   



jlarkin_at_highlandsniptechnology.com wrote in
news:djltaf5kta21gkckte8ob4pqek7u3dfj46_at_4ax.com:

Quote:
On Sun, 3 May 2020 03:47:14 +0000 (UTC),
DecadentLinuxUserNumeroUno_at_decadence.org wrote:

jlarkin_at_highlandsniptechnology.com wrote in
news:5rcsafpht5liuqgphu6s6egrhr9jh9rl0r_at_4ax.com:

On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
robertbaer_at_localnet.com> wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

What do you use a curve tracer for?




Testing transistors.

Do you use a curve tracer? I don't.


Same reason some folks still like tube amplifiers for their audio.



Guest

Sun May 03, 2020 6:45 pm   



On 3 May 2020 07:39:33 -0700, Winfield Hill <winfieldhill_at_yahoo.com>
wrote:

Quote:
jlarkin_at_highlandsniptechnology.com wrote...

DecadentLinuxUserNumeroUno_at_decadence.org wrote:
jlarkin_at_highlandsniptechnology.com wrote in
Robert Baer wrote:

Mine quit - no vertical output.

What do you use a curve tracer for?

Testing transistors.

Do you use a curve tracer? I don't.

They're pretty handy at times. You get
results a lot faster than with a SMU,
but the SMU gives you precise answers.


Data sheets generally have the curves for fets. Bipolars aren't very
interesting to curve trace.

I sometimes do a point measurement for something not on a data sheet,
like to measure actual capacitance or breakdown voltages, but a
classic curve tracer might not do those. Like 1800 volts for a SiC
fet, or 0.25 pF for a small diode.

I'd love to have a small USB box that characterized diodes and
transistors, but it would need to do c-v curves and pulsed breakdown
measurements. It would need to be cheap, for infrequent use.

My old Boonton 72 is great for c-v curves. I've been doing that lately
for varicaps. The Skyworks varicaps have 15v breakdown spec, actually
zener at 24 to 47, but the data sheets only have c-v data out to 8
volts. I don't need a curve tracer to measure a diode's forward or
breakdown voltages. A scope curve tracer isn't very quantitative
anyhow.

My old Keithley electrometer is good for pA leakage testing.

Curve tracers were popular for a while when transistors were new, but
I think people lost interest.

We have a few Keysight SMUs. Is there a curve tracer PC program for
those? I could have one of the kids do one in Python.





--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard

Phil Hobbs
Guest

Mon May 04, 2020 7:45 pm   



On 2020-05-03 10:39, Winfield Hill wrote:
Quote:
jlarkin_at_highlandsniptechnology.com wrote...

DecadentLinuxUserNumeroUno_at_decadence.org wrote:
jlarkin_at_highlandsniptechnology.com wrote in
Robert Baer wrote:

Mine quit - no vertical output.

What do you use a curve tracer for?

Testing transistors.

Do you use a curve tracer? I don't.

They're pretty handy at times. You get
results a lot faster than with a SMU,
but the SMU gives you precise answers.



And an HP 4145B gives you the best of both, with four SMUs. (Assuming
you can keep the floppy drive working.)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

Robert Baer
Guest

Mon May 04, 2020 8:45 pm   



Michael Terrell wrote:
Quote:
On Saturday, May 2, 2020 at 9:23:00 PM UTC-4, Robert Baer wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Join the old Tekscopes group. It moved from Yahoo to GroupsIO. The people who repair old Tektronix gear are there. Unlike Usenet, they do not tolerate foul language and insults, so some of the people on this group would be banned in a hurry. Some members offer kits to make extenders for the 7000 series of scopes.

https://groups.io/g/TekScopes/topics

http://w140.com/tekwiki/wiki/Main_Page has links to places where you can download manuals.

Took a quick look at that Tekscopes group.
WOW! These guys are sharp and to the point!

Thanks.

Robert Baer
Guest

Mon May 04, 2020 8:45 pm   



jlarkin_at_highlandsniptechnology.com wrote:
Quote:
On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
robertbaer_at_localnet.com> wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

What do you use a curve tracer for?



Part matching, spec conformance/non-conformance, check off-datasheet
specs, etc

John Larkin
Guest

Mon May 04, 2020 9:45 pm   



On Mon, 4 May 2020 12:40:49 -0700, Robert Baer
<robertbaer_at_localnet.com> wrote:

Quote:
jlarkin_at_highlandsniptechnology.com wrote:
On Sat, 2 May 2020 18:22:52 -0700, Robert Baer
robertbaer_at_localnet.com> wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Thanks.

What do you use a curve tracer for?



Part matching, spec conformance/non-conformance, check off-datasheet
specs, etc


Matching soulds iffy, on an analog oscilloscope curve tracer. Better
to design so that any data-sheet-conforming parts work.



--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

Robert Baer
Guest

Mon May 04, 2020 9:45 pm   



Winfield Hill wrote:
Quote:
jlarkin_at_highlandsniptechnology.com wrote...

DecadentLinuxUserNumeroUno_at_decadence.org wrote:
jlarkin_at_highlandsniptechnology.com wrote in
Robert Baer wrote:

Mine quit - no vertical output.

What do you use a curve tracer for?

Testing transistors.

Do you use a curve tracer? I don't.

They're pretty handy at times. You get
results a lot faster than with a SMU,
but the SMU gives you precise answers.


Southern Methodist University?
Spencer Municipal Utilities?
Saint Mary's University of Minnesota?
a web based application?
Sacramento Municipal Utility District?
AHA!
What is an SMU (Source Measure Unit)?

Sometimes one needs more than hip-deep boots for wading...

John Larkin
Guest

Mon May 04, 2020 9:45 pm   



On Mon, 4 May 2020 12:56:51 -0700, Robert Baer
<robertbaer_at_localnet.com> wrote:

Quote:
Winfield Hill wrote:
jlarkin_at_highlandsniptechnology.com wrote...

DecadentLinuxUserNumeroUno_at_decadence.org wrote:
jlarkin_at_highlandsniptechnology.com wrote in
Robert Baer wrote:

Mine quit - no vertical output.

What do you use a curve tracer for?

Testing transistors.

Do you use a curve tracer? I don't.

They're pretty handy at times. You get
results a lot faster than with a SMU,
but the SMU gives you precise answers.


Southern Methodist University?
Spencer Municipal Utilities?
Saint Mary's University of Minnesota?
a web based application?
Sacramento Municipal Utility District?
AHA!
What is an SMU (Source Measure Unit)?

Sometimes one needs more than hip-deep boots for wading...


Yes. Pronounced smooo, rimes with cow noise.



--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

Michael Terrell
Guest

Mon May 04, 2020 9:45 pm   



On Monday, May 4, 2020 at 3:37:52 PM UTC-4, Robert Baer wrote:
Quote:
Michael Terrell wrote:
On Saturday, May 2, 2020 at 9:23:00 PM UTC-4, Robert Baer wrote:

Mine quit - no vertical output.

Ideas? quotes? Etc?

Join the old Tekscopes group. It moved from Yahoo to GroupsIO. The people who repair old Tektronix gear are there. Unlike Usenet, they do not tolerate foul language and insults, so some of the people on this group would be banned in a hurry. Some members offer kits to make extenders for the 7000 series of scopes.

https://groups.io/g/TekScopes/topics

http://w140.com/tekwiki/wiki/Main_Page has links to places where you can download manuals.

Took a quick look at that Tekscopes group.
WOW! These guys are sharp and to the point!

Thanks.


You're welcome.

Goto page 1, 2  Next

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