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JFET question's

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2/6/2000 6:36 PM

Benjamin Fargen

JFET question's

Hello all,

I am getting ready to try my hand at building the double throw JFET switch in O'Connor's book. I am looking through Mouser right now and I can't seem to find any of the JFET numbers he lists in the book.
Can someone please advise me as to which JFET I should buy to make this circuit work correctly?

One more thing..........What's the deal with listing caps in nF instead of uF? He lists a 100nF for the input jack to reduce noise.....is this the same as 100000uf?

Thanks for the help!

Benjamin.

2/6/2000 6:59 PM

quote:
"One more thing..........What's the deal with listing caps in nF instead of uF? He lists a 100nF for the input jack to reduce noise.....is this the same as 100000uf"

Come on, Ben... don't you know your prefixes?

nF is nanofarads, which is 10E-9. That makes it precisely 1000 times smaller than a uF. 1000 nF's make up a uF, so 100 nF's is equivalent to 0.1 uF.

100,000 uF??? Jesus, that's rather large.

Ken

2/6/2000 7:17 PM

Benjamin Fargen

Ken,

That's what happens when you are learning everything self taught and in a shotgun fashion.
Without any formal schooling.......some of the little simple things get left out along the way.
I have only encountered uF in text up until this point.
I guess I should have thought about it a little more.
Thanks for clearing that up!

Hey.......how about some help on the JFET thing instead of
just hanging me out to dry!:>)

Thanks,
Benjamin

2/6/2000 7:21 PM
Ken Gilbert	ben, how about tell us the part numbers so that i don't have to go find my damned KOC books?

2/6/2000 7:28 PM
Benjamin Fargen	Ken, All of these JFET's are suggested as options for the muting circuits. 2SK30A audio SW 2N5485 chopper j109 j113 I do really appreciate the help! Thanks, Benjamin

2/7/2000 3:40 PM
anon	How about: PN4092 (or 2N) PN4856 PN5434 2N5640

2/7/2000 4:39 PM
Benjamin Fargen	Thanks! Thanks for the help! FYI to all: The JFET # 2N5640 cross references to the mouser part # 526-NTE-133 Benjamin

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