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Old 29th January 2013, 06:27 AM   #1
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Default JFET Matching/Sorting

Could someone kindly describe a simple circuit for measuring turn-off voltage (Vgs off) for JFETs (both P and N channel, J210, J177)? Something that makes use of a single resistor and, say, a +/- 11V power supply. The turn-off range for the N-channel J210 is -3V ~ -1V, and that for the P-channel J177 is 0.8V~2.3V. I have a batch of parts of both I need to sort according to Vgs(off) and Idss.

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Kofi
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Old 29th January 2013, 06:33 AM   #2
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here is a great resource
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Old 29th January 2013, 06:42 AM   #3
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or this excellent old Erno Borbely chestnut ae599bor.pdf
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Old 29th January 2013, 05:02 PM   #4
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Thank you for both!

-Kofi

Last edited by partialresponse; 29th January 2013 at 05:13 PM.
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