[ged]

hi everyone
I have a noobie question for the pros.I picked up a 24 volt 12 amp power supply yesterday from the bone yard for 5 bucks.It reads
Standard power
Acme electric cps 220-24\28 115\230 vac 47-440hz
24\28v 12.0 A EIA 413-0007 0000-102593-01 F1
I tried to google it but came up empty handed.Just want to know If it can be
changed to 48 v 5 A supply? The transformer is a Pacific transformer
#0000-101266-04 L1
Tried to google it also but no luck.The supply has a 30,000 capacitor.
I have nema 23 500oz\in 3v 3A rex motors and figured I needed 68v 48v sec 150 vA supply so I think this might be too small anyway.Any and all info will be
greatly appreciated. thank you Ged.

[Al_The_Man]

The supply appears to be about double than your required 150va.
About the only way to increase it is to wind another secondary, which if it is a square lamination type, could be tricky.
You would need to check the Voltage rating of the Cap if you want to use it on the higher supply.
Al.

[ged]

I forgot to include that it is a 50 v cap. sorry. thanks for the quick reply Al.

[Al_The_Man]

You would need to up it for the 48v supply, 65~75v at least.
Al.

[ged]

Knowing that I am definitly not an electronics wiz, I think it might be smart to just set this one aside and buy a good toroid ,rectifier and cap and start fresh. thanks Al

[smarbaga]

well, u will need a meter anyways, if u don't have one .
buy a $10 meter and check the ac comming out of the transformer.
and come back to this post with ######'s.
be carefull tho.

[ged]

I stuck a meter on it and I get 38 volts at the cap.But I`m looking to build or buy a supply that has atleast 56 to 60 volts at the cap.I want the max performance out of these motors.It says 12 amp on the supply but i`m not sure how to check it.The transformer in this supply has dual secondaries.the one side is the 24 volt and the other side I`m not sure of .
secondary side
-- -- o o-o
? 24v

110v
o-o o-o
primary side

Sorry for the primitive sketch but It`s 3am and I just got in from work.
the unknown side is hooked up but it seems to be a much lighter winding.
I`ll have another look at it tommorrow to see if I can figure out the voltage of that side.It seems to run to a small board with a couple of trim pots ,small 35 volt cap,resisters etc.

[ged]

Hi there Smarbaga When I got up this morning I checked the power supply and the other side reads 12v at the transformer and 24v when it comes out of the power supply. Thanks for your reply Ged.