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Old 30th March 2012, 05:44 AM   #41
richiem is offline richiem  United States
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I use an old Leader LTC-905 and, connected to my Tek 7603 scope, it works fine for most of the things I want it to do; there are several other good old units that show up from time to time as well, including some from Heathkit and B+K.

Yes the PC is very convenient, but the old analog stuff still works well. I paid $90 I think for the Leader....
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Old 30th March 2012, 06:48 AM   #42
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I am also leaning towards an adapter that can be plugged into a scope or better yet with a USB/RS232 connection to the PC, so the data could be used for further processing/matching against datasheet, etc. But it is hard to beat twisting knobs and seeing the curves on the CRT display right in front you, that is just the UI we all grew up with and accustomed to...

Jaz

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Originally Posted by richiem View Post
I use an old Leader LTC-905 and, connected to my Tek 7603 scope, it works fine for most of the things I want it to do; there are several other good old units that show up from time to time as well, including some from Heathkit and B+K.

Yes the PC is very convenient, but the old analog stuff still works well. I paid $90 I think for the Leader....
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Old 30th March 2012, 01:30 PM   #43
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Quote:
Originally Posted by jazbo8 View Post
Since none of the older curve tracers can be interfaced with the PC
Just because it doesn't have a USB port on the 576?

You can always take a snap of the 576 screen and use Graph Grabber to put the data into CSV/Excel format. Folks do this all the time to take data from a manufacturer's datasheet and put together a SPICE model.
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Old 30th March 2012, 03:48 PM   #44
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Quote:
Originally Posted by jackinnj View Post
Just because it doesn't have a USB port on the 576?

You can always take a snap of the 576 screen and use Graph Grabber to put the data into CSV/Excel format. Folks do this all the time to take data from a manufacturer's datasheet and put together a SPICE model.
If one already has a curve tracer, then sure, take snaps and convert the curves. My question was more along the line of whether a newbies like me should get one now when modern alternatives (such as the one that Michael Koster is working on) can be bought/made for roughly the same cost (may be even less if you are talking about the Tek's). But your point is well taken.

Jaz
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Old 30th March 2012, 04:10 PM   #45
paulxbe is offline paulxbe  United Kingdom
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Default Curve tracer

Hi Jaz,

A the moment I have only been talking about CT adaptors to go with an oscilloscope, either as an external box (like I built) or a plug-in to go with my Tek7000 scope.
Both options are relatively low power, suitable for "signal" devices.
I don't really have space for a full blown Tek CT and I use it fairly rarely for the odd Vbe match in an oscillator.
There is a design on the web for a CT that uses a sound card (therefore a PC) and displays the results on the monitor, I believe the software is available.

Cheers

Paul
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Old 31st March 2012, 12:56 AM   #46
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Quote:
Originally Posted by locky_z View Post
this link 'DIY Curve Tracer for PC'
DIY Curve Tracer for PC
Not really an adapter, but locky_z has a PC CT. This one works well for low voltage/low power transistors/FETs. I should have been more specific in posting my question, since I work mostly with tubes, the CT needs to have HV capability. The Tektronix 576 is ideal for me, but the price is pretty high still, on eBay at the moment, I see $1000-$3000!, plus shipping, it could add another $100-$200 at least (for outside the US). Anyway, appreciate all the feedback.

Jaz
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Old 8th April 2012, 01:29 AM   #47
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Default QT4810 Curve Tracer/China?

Does anyone have a QT4810, or used one?

Thinking about buying one but a little leery since it is made in China.

Sam
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Old 8th April 2012, 01:32 AM   #48
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Default QT4810

Here's the site: QT4810 SERIES
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Old 3rd August 2012, 10:28 PM   #49
jned is offline jned  United States
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Just found this on ebay, anyone try it? Cheap enough, going to get one and try it.

Power-Transistor-Curve-Tracer-adapter-XY-Oscilloscopes

John
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Old 19th December 2012, 05:25 PM   #50
noSleep is offline noSleep  Sweden
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John,

Did you get one and was it any good ?

/Tommy
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