[sdiy] Hooking up a Power-One unit

[John Luciani]

On Sun, Apr 5, 2009 at 7:33 PM, David G. Dixon <dixon at interchange.ubc.ca> wrote:
> John,
>
> The terminals are little solid cylinders, about 1 cm high and maybe 2.5 cm
> in diameter, with one little ring or flange about halfway up and another at
> the top.  They look like something is supposed to slide over them, but I
> don't know what.  Also, there are seven of them, labelled as follows:
>
> -OUT   -S   +S   COM   -S   +S   +OUT
>            -------------

Those almost sound like output posts that slide into a power plane.

>
> I'm presuming that one uses the -OUT, +OUT, and COM terminals, and the S
> terminals are for remote sensing.  I take it the latter are unnecessary
> unless very long power leads are used. (?)

They are remote sense lines for long power leads. You may need to tie those
to the appropriate output lines if you do not require remote sensing. Some
supplies will give an open sense line fault. Check in the datasheet.

>
> I've had a thorough look at the datasheet, and no guidance is given there
> for these terminals either.

Are there app notes or accessories?

>
> While I've got your attention, perhaps you can tell me about the standard
> way to connect the output terminals to the distribution board.  I'm looking
> at the picture of the MOTM-900 (http://www.synthtech.com/motm900.html, click
> embedded picture) but I can't make out what the connectors are either on the
> board or on the supply terminals.  I'm guessing the terminals on the board
> are flat slip-on tongues like those on the Power-One transformer.  I'll have
> to look for those at my friendly neighborhood electronics store.

On the transformer are some sort of crimp terminals. I can't see if they
are lugs or fastons. On the Synthtech board it looks like fastons for
the wires and 12 MTA-156 for distribution.

>
> The Power-One output terminals are shown quite clearly in the picture, and
> those which are connected appear to have heat shrink tubing on them, but I
> don't know how the leads are actually attached.

It looks more like the insulation that is part of the crimp connector to me.
I could be wrong.

(* jcl *)




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