[Shiftone]

http://midibox.org/f...supply-queries/

I thought I'd bump and old thread on the subject rather than start a new one. Then I realised the old topic is not quite in the right place so I'm linking it here; content copied below.

[content]

I've got my Sammich order in so I'm looking for PSU options in the UK as well.

First @ orange_hand - did you go with that 500ma Maplin PSU and if so how did it work out?

@ Wilba and anyone else that can help.

1. Is 500ma really enough or is it much better to try and find a 1000ma PSU (I'll be using stock LEDs and LCD)

2. Can someone comment on these PSU

a) http://www.buythis.co.uk/pdf/5965.pdf
(http://www.buythis.c...set=48&Orderby=)

I can't tell if that is linear or not.

b) http://www.buythis.co.uk/pdf/4927.pdf
(http://www.buythis.c...fset=0&Orderby=)

This one definitely is linear but at 500ma

c) http://www.buythis.c...&offset=&mid=73

this is switchmode but regulated and the guy at the end of the phone says it should be a very clean supply...

anyway - take a look and see what you think.

EDIT

boom and we have a winner;

http://uk.farnell.co...ross_price=true

can someone verify this is indeed 12v 1a regulated linear.

This post has been edited by Shiftone: 07 February 2012 - 13:51

[technobreath]

the booming winner link isn't working

[Shiftone]

technobreath, on 08 February 2012 - 16:53, said:

the booming winner link isn't working

http://uk.farnell.co...ross_price=true

order code - 1176265

try that.

This post has been edited by Shiftone: 08 February 2012 - 22:51

[technobreath]

To me, these specs are a bit contradicting... But let me check something... I come back and edit this post

Edit:

I can't verify this as a 12VDC linear regulated psu. However, the specs says it is linear, and the specs says it is 12v output, but the one thing that isn't very clear to me is the input power. You have 230v or so in UK, right?

But here's what you need to do - pop into the irc channel, and there will be a couple of folks there who can give u a good answer.

I also haven't studied sammichSID too much, since I use the original modular design and also a mb6582. So I cant tell if that's the powersupply for your box. nILS and wilba can answer you much better.

In general, switch mode PSUs will be much smaller and lighter than a bulky linear regulated one. And a dead give-away for switchmodes are the input voltage range - typical 110-240vac. A linear's input voltage will be way more specific .

This post has been edited by technobreath: 09 February 2012 - 16:41

[Hawkeye]

Hmm both the farnell docu and the tech datasheets are of dubious precision:

Farnell:
Input Voltage VAC: 1V AC to 110V AC

Great range, can i haz circuit diagram for this?

Datasheet pdf:
AD-12100R 12 100 (ma output current) F

By their naming convention one would assume it is 1000ma (instead of 100ma, cause that would be the AD1210R) regulated and linear as advertised in the datasheet title, but no guarantees

Greets,
Peter

This post has been edited by Hawkeye: 09 February 2012 - 18:13

[technobreath]

phew, nice to see it wasn't just me who was wondering about those specs :P