Thread: Question on PCB and routing
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09-05-2013 #1
Question on PCB and routing , well more .. will it work I guess ? Anyway I have hammered the tutorials and finally got to where I think I can start to mill the board. Only thing is is a question on power voltage etc. as you can see I have highlighted my concern in a red box , this is two molex 2 male pin plugs , I want to draw power from both as they go to different parts of the hardware .. will this work ? Will this affect the voltage ?
and blew a close up :)
any help as normal appreciated :) only had four beers so far .. record lol BTW the board is tiny only only 60mm x 40mm .
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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09-05-2013 #2
As long as your within the limit of what the regulator can supply AND the traces are wide enough for the current desired, it should work.
Art
AKA Country Bubba
(Older than Dirt)
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09-05-2013 #3
Depending on current, it may mean a slightly higher voltage drop at X7, however provided that whatever you're powering from the connectors aren't going to be affected by noise/voltage spikes from each other, and you're not going to overload the tracks, it'll be fine.
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09-05-2013 #4
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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09-05-2013 #5
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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10-05-2013 #6
Use this: The PCB Track Width Calculator to calculate track width...
Incidentally, 3-pin regulators should have 10 - 100nF ceramic capacitors on input and output else things can get noisy. See their datasheets.Last edited by irving2008; 10-05-2013 at 02:43 PM.
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The Following User Says Thank You to irving2008 For This Useful Post:
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10-05-2013 #7
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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11-05-2013 #8
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11-05-2013 #9
So you think I should add 10k's at the voltage out ? I'm going off the guys schematic , he didnt include them only on the data line.
PI Tank powerLast edited by Fivetide; 11-05-2013 at 08:53 PM.
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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11-05-2013 #10
I normally include an electrolytic cap on the output of linear regulators, then add a ceramic near the input of anything that may be affected by noise.
Although things may work without caps on the linear regs, it's not good practise. Lots of linear regulators specify minimum capacitence on the output lines in their datasheets.
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