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POESP_board - resistors R20, R27 value #26

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opened 2019-12-20 08:24:32 +01:00 by ghost · 2 comments
ghost commented 2019-12-20 08:24:32 +01:00 (Migrated from github.com)
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Hi
I read schematic board and I don't know value for resistors R20 and R27.
In schematic is written R20=bead and R27=np.
Is it shortcut for something?
Can you write real values of this resistors?
Thank you

Hi I read schematic [board](https://github.com/MakerSpaceLeiden/AccesSystem/blob/master/POESP_board/poesp_1.0.sch) and I don't know value for resistors R20 and R27. In schematic is written R20=bead and R27=np. Is it shortcut for something? Can you write real values of this resistors? Thank you
dirkx commented 2019-12-20 11:30:12 +01:00 (Migrated from github.com)
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You’d have to contact Aart to get the right answer; but NP means not-placed. And looking at the board - R20 is just a standard/cheap ferrite bead - the last one I repaired used Würth 74279266 or 742792651 (not sure).

You’d have to contact Aart to get the right answer; but NP means not-placed. And looking at the board - R20 is just a standard/cheap ferrite bead - the last one I repaired used Würth 74279266 or 742792651 (not sure).
dirkx commented 2024-10-01 15:23:31 +02:00 (Migrated from github.com)
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You probably want to look at revision v1.12 or newer of this: https://oshwlab.com/dirkx/msl-node-4g-107 board now.

You probably want to look at revision v1.12 or newer of this: https://oshwlab.com/dirkx/msl-node-4g-107 board now.
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