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)
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.
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.
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.
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.