Using The Tektronix 575 Curve Tracer - Page 2

lumanauw · 6th August 2006, 02:54 AM

Hi, Mark,

What info (what measurement data) can you get from this Curve Tracer?

I saw this in the net. Do you have any idea what brand/model this one is?

sawreyrw · 6th August 2006, 03:26 AM

These old transistor curve tracers basically test the transistors in a common emitter configuration. They step the base current through a range of steps and sweep the collector to emitter voltage and display the collector current. Each curve on the plots you have shown is for a specific base current. (You set this with a knob on the curve tracer; you probably know this.) I don't think it matters if the transistor are Ge or Si.

Since the input to the DUT is current, not voltage, it won't work for FETs.

john curl · 6th August 2006, 03:44 AM

It can be externally modified with a 1K resistor to measure fets. Did it for decades!

Mark A. Gulbrandsen · 6th August 2006, 03:59 AM

It can also do testing in common base config. as well. Then the emitter can be stepped with either voltage or current.

The 575 manual is here....

The user guide is here...

The user guide is particuluarly interesting!!

There was also a model for Vacuum Tubes!

Mark

jackinnj · 28th January 2010, 06:26 PM

Found this 575 tracer on youtube: YouTube - Delco R-1233 All-American-5 tube radio powered up on TEK575 curve tracer - 28 Watts

llwhtt · 28th January 2010, 07:05 PM

Is anyone still using these? I picked one up a few years ago, needed a bunch of 6AN8s and 6AL5s. Ordered the tubes and they are still sitting on the self. I know where a couple of the 175s (high current adapter) are and wonder if it's worth picking one of those up. Matching transistors is a big subject on this forum and I wonder if the 575 is the way to do it.

Craig

jackinnj · 28th January 2010, 07:10 PM

I have a 576 which was received in sad shape -- but I've gotten it working (with a bit of patience.)

jackinnj · 31st January 2010, 12:46 PM

Now here's an Agilent tester/tracer which would really impress the ladies:
YouTube - Agilent B1505A Curve Tracer & Power Device Analyzer_Flory_5m30s.MP4

rtirion · 31st January 2010, 01:58 PM

@llwhtt

Is it possible to share some info on the 175s

I do have and use a 575 and would like to get a high current adapter.

Thanks in advance

Original Burnedfingers · 31st January 2010, 04:07 PM

Nice thread

Made a copy of the manual and guide for my 575 that has been sitting on the shelf for years.

6th August 2006, 03:59 AM	#14
Mark A. Gulbrandsen diyAudio Member Join Date: Sep 2001 Location: Salt Lake City	It can also do testing in common base config. as well. Then the emitter can be stepped with either voltage or current. The 575 manual is here.... The user guide is here... The user guide is particuluarly interesting!! There was also a model for Vacuum Tubes! Mark __________________ KSA-100 WIKI

31st January 2010, 01:58 PM	#19
rtirion diyAudio Member Join Date: Nov 2000	175 @llwhtt Is it possible to share some info on the 175s I do have and use a 575 and would like to get a high current adapter. Thanks in advance

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6th August 2006, 03:26 AM	#12
sawreyrw diyAudio Member Join Date: Apr 2006 Location: Minnesota	These old transistor curve tracers basically test the transistors in a common emitter configuration. They step the base current through a range of steps and sweep the collector to emitter voltage and display the collector current. Each curve on the plots you have shown is for a specific base current. (You set this with a knob on the curve tracer; you probably know this.) I don't think it matters if the transistor are Ge or Si. Since the input to the DUT is current, not voltage, it won't work for FETs.

6th August 2006, 03:44 AM	#13
john curl diyAudio Member Join Date: Jul 2003 Location: berkeley ca	It can be externally modified with a 1K resistor to measure fets. Did it for decades!

28th January 2010, 06:26 PM	#15
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	Found this 575 tracer on youtube: YouTube - Delco R-1233 All-American-5 tube radio powered up on TEK575 curve tracer - 28 Watts

28th January 2010, 07:05 PM	#16
llwhtt diyAudio Member Join Date: Jun 2008	Is anyone still using these? I picked one up a few years ago, needed a bunch of 6AN8s and 6AL5s. Ordered the tubes and they are still sitting on the self. I know where a couple of the 175s (high current adapter) are and wonder if it's worth picking one of those up. Matching transistors is a big subject on this forum and I wonder if the 575 is the way to do it. Craig

28th January 2010, 07:10 PM	#17
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	I have a 576 which was received in sad shape -- but I've gotten it working (with a bit of patience.)

31st January 2010, 12:46 PM	#18
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	Now here's an Agilent tester/tracer which would really impress the ladies: YouTube - Agilent B1505A Curve Tracer & Power Device Analyzer_Flory_5m30s.MP4

31st January 2010, 04:07 PM	#20
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Nice thread Made a copy of the manual and guide for my 575 that has been sitting on the shelf for years.