CURVE TRACER SCHEMA !!

[ta2ctp]

Dear friends ,
I need the curve (Lissajous) tracer first class schema for semiconductor testing.(For pcb repairing).
Help me..
Thank you, reading for my message..
Safak..
( e-mail address deleted - moderator)

 

[Nigel Goodwin]

Dear friends ,
I need the curve (Lissajous) tracer first class schema for semiconductor testing.(For pcb repairing).
Help me..
Thank you, reading for my message..
Safak..
( e-mail address deleted - moderator)

I don't see any use for a device like that in doing repairs, it's generally used at school or university to demonstrate the action of semiconductors. This isn't of any use when servicing, you only need to know if they work or not.

 

[laroche73]

Curve tracer

Nigel's right, but here's a simple curve tracer you can build to satisfy your curiousity. I also have an old National Semiconductor App note ('77) that describes a curve tracer circuit based on a quad op-amp. Its intended use is for checking out JFET characteristics. If you're interested, I can scan and email it to you.

 

[tansis]

Digital Oscilloscope Uses PC Sound Card for Input
https://polly.phys.msu.su/~zeld/oscill.html

 

[talhaali]

I want the circuit laroche73 can u mail me??

 

[ericgibbs]

I want the circuit laroche73 can u mail me??

hi,
This Thread is 7 years old.! I doubt if the OP will reply.

 

[JimB]

The link to the circuit diagram is embedded in the word <here's> in the post by laroche73.

I have copied it here:

http://www.techlib.com/electronics/curvetrace.html

JimB

 

[audioguru]

IT IS STUPID TO HAVE AN IMBEDDED LINK SHOWN AS VERY DARK BLUE IN TEXT THAT IS BLACK.
Maybe the link should be in another colour like bright RED.

 

[ericgibbs]

I agree, WHY do posters insist on hiding a link as part of the descriptive text, at least display the original link full address.

 

[Tony Stewart]

I don't see any use for a device like that in doing repairs, it's generally used at school or university to demonstrate the action of semiconductors. This isn't of any use when servicing, you only need to know if they work or not.

. (old thread)

It depends on unit/system complexity.

I have seen the useful repair features of a VI curve tracer , commercialized by Huntron Tracker. It can detect failures before they occur due to "ESD wounds" and changing the device input or output capacitance as well as actual failures by comparing signatures in complex circuits with power off, thus speeding up debug if analytical debug is slow. Good PCB Test Techs found them useful in our factory to improve repair times when ATE fault isolation was not avail and a unit used many cards.

 

[schmitt trigger]

I've also used the Huntron Tracker to analyze circuits.
Once that you master it, it is an invaluable tool for the repair technician.

It provides a circuit signature that allows for quick analysis. It is specially useful if one has a "golden" unit to which compare the signatures.

EDIT:
What I find interesting is that the OP only posted this single message, close to 13 years ago, but nevertheless it is still being alluded to.