Electronics > Beginners

A niche chip (LT4320) for mains powered AC -> low volt DC "linear" based psu ?

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M. András:
i would love to see carry more then a few amperes by those ethernet cables :D

tszaboo:

--- Quote from: M. András on January 23, 2014, 09:36:28 pm ---i would love to see carry more then a few amperes by those ethernet cables :D

--- End quote ---
It is rated for 0.6A
Voltage about 60-70V though.

M. András:

--- Quote from: NANDBlog on January 23, 2014, 11:21:49 pm ---
--- Quote from: M. András on January 23, 2014, 09:36:28 pm ---i would love to see carry more then a few amperes by those ethernet cables :D

--- End quote ---
It is rated for 0.6A
Voltage about 60-70V though.

--- End quote ---
sorry i meant to be sarcastic. i know their ratings flimsy little signal cables thats what they are for me

tszaboo:

--- Quote from: M. András on January 23, 2014, 11:28:29 pm ---
--- Quote from: NANDBlog on January 23, 2014, 11:21:49 pm ---
--- Quote from: M. András on January 23, 2014, 09:36:28 pm ---i would love to see carry more then a few amperes by those ethernet cables :D

--- End quote ---
It is rated for 0.6A
Voltage about 60-70V though.

--- End quote ---
sorry i meant to be sarcastic. i know their ratings flimsy little signal cables thats what they are for me

--- End quote ---
OK, I should go to sleep. Jóéjt.

necessaryevil:

--- Quote from: digsys on January 11, 2014, 10:08:13 pm ---
--- Quote from: necessaryevil ---  Well, I meant the PCBs could handle 15A (calculated, conservative settings) 
--- End quote ---
Did you use 4oz Copper? Any other "tricks"? Exposed section/over-solder/silver-solder/wire over tracks?

--- End quote ---
The only trick is that I use copper planes on both sides of the pcb. For the DC path I use about 2x300mil. The copper layers are only 1oz/ft^2. I'm not really going to use them for 15 amp, just a design goal.

I used this calculator: http://circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator/

Some images:



I just have sent the second version of my layout to Itead.
I've received the v1 pcbs and got them working, but I realized that I made some misstakes. The holes for the input and output wires are too small and I forgot to connect one plane (resulting in current flowing through only one side of the pcb).

//edit
legenda:
Green = bottom layer
Red = top layer
Yellow = both layers

the white squares are for the wires. They have a 3.2 mm hole in them (m3 screw), which is not visible in the pictures.

size: 50x50 mm (about 2"x2")

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