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thermal conductivity

Which product is right for your exact requirements

thermal conductivity

Postby Nathan » Fri Jun 23, 2006 5:41 am

What unit would I buy to do thermal conductivity testing on automotive diodes?

This test involves a 5 microsecond, 100A pulse, followed by a 50mA signal by which the voltage drop can be seen on the scope. As the diode cools, the bias voltage will decrease to normal - a shift of only 30mV in some cases. The length of time it takes for the voltage to return to normal is an indication of how well the diode conducts heat away from the chip.

Do you make a unit that is suitably fast and precise?

Nathan
Nathan
 

Postby Michael » Fri Jun 23, 2006 8:43 am

Hello Nathan,

Thank you for your post.

May I suggest our 3224 12bit scope? This precision oscilloscope has a minimum voltage range of ±20mV. This scope also has a 20MHz bandwidth which would be fast enough for your test.

Further information can be found here:
http://www.picotech.com/pc-scope.html

Many thanks,
Michael
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re: best scope for thermal conductivity testing

Postby Nathan » Fri Jun 23, 2006 3:04 pm

Michael,

I looked at the scope you suggested.
It looks pretty good. Is that the best unit you have, or is it a trade off in specs? The 3206 is faster but uses only 8 bit. The AD216 is slower but uses 16 bits. I would like to buy one that is capable of more than what I barely need to do the job.

Nathan
Nathan
 

Postby Michael » Mon Jun 26, 2006 8:03 am

Hello Nathan,

This is an question that only you can answer. You will need to weigh up the specs for each scope to pick the best suited instrument.

All of our scopes can be found here:
http://www.picotech.com/oscilloscope-sp ... tions.html

Best regards,
Michael
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3223 vs 3224

Postby Nathan » Mon Jul 03, 2006 3:01 am

Michael,

Is the automotive scope 3223 equivalent to the 3224 you suggested?

Is there any reason why the 3223 is considered an 'automotive' scope?
I do automotive type work, and was wondering if the 3223 was better protected.

Do you have any Canadian distributors? I got the email about your sale.

Nathan
Nathan
 

Postby Michael » Wed Jul 05, 2006 2:13 pm

hello Nathan,

The 3223 and 3423 scopes are both automotive instruments. They have been designed with an extra voltage range: ±50V. This range will cover standard 24V systems found in commercial vehicles. It they are also the only instruments that work with the PicoScope Automotive software.

Hope this helps.

Best regards,
Michael
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