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Old 11th November 2009, 02:18 PM   #41
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Quote:
Originally Posted by juma View Post
No, they are all pretty much close in Idss (12-14mA, most of them about 13mA)


Right
You can use lower value for gate stopper, Scott Wurcer says that even ferrite bead is enough
I just suggested it, syn08 built and tested the SMT ferrite idea. Massively paralleled BF862's are "guaranteed" to oscillate without some considerations since they are designed for AM radios not audio.
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Old 11th November 2009, 04:17 PM   #42
juma is offline juma  Germany
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Originally Posted by sandyhooker View Post
...poor eyesight and shaking hands keeps success at bay.....
JT, if you don't find a helping hand in the neighborhood just PM me your address again and I'll send you these JFETs already mounted on adapter boards.
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Old 11th November 2009, 07:42 PM   #43
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Juma, where can I get BF862s. Not available where I live.
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Old 11th November 2009, 08:04 PM   #44
juma is offline juma  Germany
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Originally Posted by Samuel Jayaraj View Post
Juma, where can I get BF862s. Not available where I live.
mouser.com
digikey.com
farnell.com
newark.com
and many other online shops....
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Old 11th November 2009, 11:02 PM   #45
npapp is offline npapp  United States
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Originally Posted by sandyhooker View Post
Alas, Old Age (and its consequences) is keeping me from this project. If you go to post #10 you will see a strip of miniature PCB's made for the BF devices used in this project. I have one of these strips and the BF862's to go on the strip.

I have made numerous attempts to solder the devices to the strip but poor eyesight and shaking hands keeps success at bay. Believe me, this is not a one or two attempt scenario but a concerted daily ongoing trial and error thing that creates suicidal tendencies!!

There are 14 pads on the strip as shown in post#10 . What I seek is an individual with the ability and courage to solder these together,with a barter deal of some sort to show my gratitude. It would be best if that (wonderful) person were in the US to keep it more manageable.

I can furnish solder and a flux pen for the job.
Hi SH,
I am happy to solder these together for you if you do not already have a hand. No need for barter or the rest, just send the pcb and BF862s. PM me and I will send you my home address.

Nick
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Old 12th November 2009, 02:18 AM   #46
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JT, if you don't find a helping hand in the neighborhood just PM me your address again and I'll send you these JFETs already mounted on adapter boards.
John..Thanks so much for the offer.It appears that I found someone on this side of the pond to help.

JT
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Old 12th November 2009, 12:47 PM   #47
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Originally Posted by npapp View Post
Hi SH,
I am happy to solder these together for you if you do not already have a hand. No need for barter or the rest, just send the pcb and BF862s. PM me and I will send you my home address.

Nick
Email sent
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Old 12th November 2009, 06:23 PM   #48
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NPAPP..Hopefully I used the correct email address. If you have''nt received p[lse post..

thanks
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Old 13th November 2009, 02:30 AM   #49
npapp is offline npapp  United States
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JT, You did use the right email. It was a busy day at work but you should have my address now. Please let me know if my email did not come through.
N
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Old 13th November 2009, 02:25 PM   #50
npapp is offline npapp  United States
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Juma, are you willing to share the board files? I would like to change the pads to smd for the jfet and have a few boards made.
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