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Author Topic: MiniMig with AGA  (Read 317855 times)

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Offline ferrellsl

Re: MiniMig with AGA
« Reply #14 from previous page: December 07, 2010, 12:35:57 AM »
Quote from: freqmax;597472
Assuming a cable area of 0.205 mm² (cat.5) which gives 0,188 ohm/meter and 5 V with a 5% tolerance. Ohms law U=R*I gives the maximum cable length to be 2,2 meters. Quite tight.

I hope the next board at least has space to populate it with onboard 5 V regulation.



Are you talking about the length of copper wire between the board and the AC/DC converter that plugs into the wall outlet?  Or the total combined circuit length of the board itself?  To a FPGA board-designing geek, your question is probably quite obvious, but to a novice like me, it isn't as clear.  LOL
 

Offline ferrellsl

Re: MiniMig with AGA
« Reply #15 on: December 07, 2010, 05:25:01 PM »
Quote from: freqmax;597541
I just used the cat.5 as an example to demonstrate that onboard regulators have an advantage as all wires inherently will loose some voltage. The important factors is the conductor diameter and voltage tolerance.


What does that have to do with the price of tea in China?

And what appliances need a power cable longer than 2.2 meters anyway?  Get an extension cord!