JFET Tester

jackinnj · 8th August 2008, 02:27 PM

So as to not thread-jack the F5, here's the JFET tester I've been working on. It uses the Measurement Computing PMD1208LS USB data acquisition thingy:

lineup · 8th August 2008, 07:39 PM

so program takes USB data input of signals
and processes according to some configuration settings

Will you use this only for personal use?
.... or will you publish hardware description/software download
as a project for others to builld?

lineup · 9th August 2008, 12:02 PM

you have any sample curves
from wellknown JFET
for example 2SK170BL

Zero Cool · 9th August 2008, 04:00 PM

I was looking at these months ago and i asked if one of these could be used for FET matching and everyone pretty much told me no. So i am definitely interested in know how and what and full details of your setup please!

jackinnj · 9th August 2008, 04:43 PM

The same idea can be applied to MOSFET's -- I did it with tubes -- just somewhat different stuff to look.

The code is VB.NET, but the DAC/ADC's are from MCC and so are the softwire modules which drive the PMD1208LS.

8th August 2008, 02:27 PM	#1
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	JFET Tester So as to not thread-jack the F5, here's the JFET tester I've been working on. It uses the Measurement Computing PMD1208LS USB data acquisition thingy:

8th August 2008, 07:39 PM	#2
lineup diyAudio Member Join Date: Dec 2005 Location: the north	so program takes USB data input of signals and processes according to some configuration settings Will you use this only for personal use? .... or will you publish hardware description/software download as a project for others to builld? __________________ lineup

9th August 2008, 12:02 PM	#3
lineup diyAudio Member Join Date: Dec 2005 Location: the north	you have any sample curves from wellknown JFET for example 2SK170BL __________________ lineup

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9th August 2008, 04:00 PM	#4
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	I was looking at these months ago and i asked if one of these could be used for FET matching and everyone pretty much told me no. So i am definitely interested in know how and what and full details of your setup please!

9th August 2008, 04:43 PM	#5
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	The same idea can be applied to MOSFET's -- I did it with tubes -- just somewhat different stuff to look. The code is VB.NET, but the DAC/ADC's are from MCC and so are the softwire modules which drive the PMD1208LS.

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