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need help with 'dc converter'

O

OBL

Jan 1, 1970
0
hi,

i am trying to figure out how to power up an AT power supply.
i just want to use it as a ac/dc converter, but dont' know the wiring config
to get it to power up.

any ideas?

thanks in advance,

oliver
 
C

cirip cipcirip

Jan 1, 1970
0
Hi Oliver,

The AT power supply powers on as soon as you plug it into the outlet and
flip the mains switch.

If it's an ATX, then, after you plug it into the outlet and flip the switch
(if any), you need to connect to the ground the "power on" pin in the ATX
connector. Google for "ATX connector pinout" for details.

Hope it helps,
Cirip
 
O

OBL

Jan 1, 1970
0
it is an AT supply...there are 2 motherboard connectors instead of the atx's
one.

there is no switch on it (alas)...it was normally powerd up from a soft
power on the front of the computer


i gotta get this thing going...
i dont' wanna experiment too much cos it's not fused


ack


please help
 
C

cirip

Jan 1, 1970
0
Hmmm, I see.

Does not seem to be a regular AT. Maybe it is something custom. Sorry, no
idea in this case.

Good luck,
Cirip
 
S

Steve

Jan 1, 1970
0
OBL said:
it is an AT supply...there are 2 motherboard connectors instead of the atx's
one.

there is no switch on it (alas)...it was normally powerd up from a soft
power on the front of the computer


you may already have the answer, chances are the switch shorted a
connection on the motherboard power connector and this turns on the
supply. Some supplys have a sticker on the side that will tell you
what pins to short. Eg; the one I'm looking at now has in a column
labeled "GREEN - PS-ON". I ground the green wire and away she goes!
 
O

OBL

Jan 1, 1970
0
yes. most def the mobo power used to turn it on.


no green wire...
no sticker...

alot of colors..o my.
 
O

OBL

Jan 1, 1970
0
all you electronics ppl in here and noone knows...

argh
 
J

John G

Jan 1, 1970
0
Of course you did not tell us where it came from.
Lots of AT Compaq supplies, for instance, have 2 white wires that turn it on
and off and I am sure there are other variations in volume brands.
 
S

Sir Charles W. Shults III

Jan 1, 1970
0
You have not provided enough information for us to say anything useful.
Somebody here is sure to know, but you have to know what you are saying first.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
 
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