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Old 1st September 2013, 03:31 PM   #21
RCruz is online now RCruz  Switzerland
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I am in for two boards
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Old 1st September 2013, 04:39 PM   #22
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Quote:
Originally Posted by Gijsch View Post
I would be in for a board and a kit of parts, more parts in the kit would be preferable.
My preference is the same: as many parts in the kit. Of course, matched pair of 2SK369BL for 63 dB gain is a must.
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Old 1st September 2013, 06:12 PM   #23
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Originally Posted by RCruz View Post
I am in for two boards
Welcome Ricardo
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Old 1st September 2013, 06:19 PM   #24
nezbleu is offline nezbleu  Canada
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I'm in for one boards, probably a mini-kit depending on price and contents.
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Old 1st September 2013, 06:28 PM   #25
Marra is offline Marra  United Kingdom
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Originally Posted by Bksabath View Post
63 dB gain is just right for me so looking for matched 2SK369BL as a must and the caps if I can have them all the rest if possible... I am shure is going to be a realy good one
Likewise thanks
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Old 1st September 2013, 06:30 PM   #26
Salas is online now Salas  Greece
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Quote:
Originally Posted by Tea-Bag View Post
big roadblock is obtaining matched 2SK369BL's.
I have included a table for 10-15 mA 2% Idss tolerance 369 matches in the guide. That is I actually tested them on the breadboard with the source pin resistors mentioned.
So its a broad range that should make many samples usable. When they run at about 9mA bias after degeneration with proper Rs they present the same transconductance.
So if you got 13mA samples you know what resistors. 12mA, again you know, etc.
Use the next nearer mentioned resistor for midway Idss. I.e. you got say 12.6mA match use the next higher mentioned Rs. I.e. the one for 13mA. If you got 11.4mA use the resistors of 11mA etc.

P.S. It will even work with same IDSS & Rs table K170s at input but in less gain and bit more noise. A compromise.
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Old 1st September 2013, 06:35 PM   #27
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Took the liberty to add it up. If everyone could please check.

Big thanks to Salas and Tea-bag

1MOR 1x board 1x minikit
vgeorge 1 x board
shoom 1x board 1x minikit
VT67 1x board 1x minikit
dimkasta 2x board 2x minikit
merlin el mago 1x board 1x minikit
Bksabath 2x board 2x minikit
Rodeodave 1x board
skouliki 1x board 1x minikit
Bixbacon 1x board 1x minikit
Rush 1x board 1x minikit (?)
jims 1x board 1x minikit
Botte 1x board 1x minikit
Joshua_G 1x board 1x minikit
Gijsch 1x board 1x minikit
Rcruz 2x board
Nezbleu 1x board 1x minikit(?)
analog_sa 1x board 1x minikit


21 boards 17 minikits
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Old 1st September 2013, 06:40 PM   #28
Marra is offline Marra  United Kingdom
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Big thanks to Salas and Tea-bag

1MOR 1x board 1x minikit
vgeorge 1 x board
shoom 1x board 1x minikit
VT67 1x board 1x minikit
dimkasta 2x board 2x minikit
merlin el mago 1x board 1x minikit
Bksabath 2x board 2x minikit
Rodeodave 1x board
skouliki 1x board 1x minikit
Bixbacon 1x board 1x minikit
Rush 1x board 1x minikit (?)
jims 1x board 1x minikit
Botte 1x board 1x minikit
Joshua_G 1x board 1x minikit
Gijsch 1x board 1x minikit
Rcruz 2x board
Nezbleu 1x board 1x minikit(?)
analog_sa 1x board 1x minikit
Marra 1x board 1x minikit
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Old 1st September 2013, 06:50 PM   #29
nezbleu is offline nezbleu  Canada
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Is everybody updating the spreadsheet?
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Old 1st September 2013, 07:02 PM   #30
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by nezbleu View Post
Is everybody updating the spreadsheet?
Yes, please use the spreadsheet.
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