I went ahead and ordered a power supply that I found on ebay. I ordered it because the price was affordable and I looked at the voltage rating which was almost the highest the gecko g540 supports, so I only went by this. This is why it may be a good idea to wait until you get your motors and figure out the numbers from there. I will have to do a bit of this later still, but the price was right so we'll see how it turns out. This is the power supply I bought for this project. Unfortunately there are no dimensions for this power supply on the description. I like to get the most compact items I can as I am trying to make things fit in small areas. I don't have the luxury of space myself.
http://www.ebay.com/itm/120818965960?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
Here's a similar spec power supply and the seller is in California and for a little bit less.
http://www.ebay.com/itm/48V-DC-7-3A-350W-Regulated-Switching-Power-Supply-/180906156181?pt=LH_DefaultDomain_0&hash=item2a1ed8e095
One more power supply.
http://www.amazon.com/7-3A-Regulated-Switching-Power-Supply/dp/B005CLBZRO/ref=sr_1_3?ie=UTF8&qid=1341086891&sr=8-3&keywords=48v+power+supply
I found this site where you can also check out a bunch of power supplies and types.
http://us.tdk-lambda.com/lp/
Since the time I wrote this pages, many things have changed in terms of power supplies, you can get them for much less on ebay, so look around. I just posted the samples when I was looking around for my parts.
I got a nice surprise today, my power supply just came in.
June 29, 2012
The box came a little beat up, but it was in good condition considering it came all the way from China.
Good packing kept it in good shape.
Here it is. It comes with the tabs in that bag. You can leave them off if you like so that's good. I'm sure they will come in handy though. The power supply is not small unfortunately. It's 8.5 inches long, almost 2 inches high and roughly 4.5 inches wide. I would prefer a smaller one any day, but it's the lowest one I could find when I looked.
Here's the gecko on top of it to give you a better idea of the size of this power supply. Everything will be small, but the power supply sticks out like a sore thumb.
Side view.
Connections. The power supply comes wrapped in the clear plastic which was nice to see. It's new so I hope I won't have any problems. I just need to figure out what to use for a power wire. I wished it came with one as I don't think I have one. One of the members from the cnc forum (doorknob) mentioned that the green = chassis ground, White wire = Neutral and Black = Line (hot) on a regular US 3-prong power cord. Whatever you do, always check this with anyone that knows. I ask because I am not familiar and don't need to burn this up or anything else for that matter. So this is where you connect the household power cord to. The gecko is plugged into the left side +V and -V and whatever other things you need to power. I'll update this once I test it out.
Here are the mounting tabs that come with this power supply. I think these will come in handy as I now have a way to mount it anywhere.
Since this is the first time I use this type power supply, I got curious as to what the inside of the box looked like.
A different view.
A better close up.
The only writing I see in it describing it.
This was on the top side.
http://durpower.com/power_cable_products.html
I stripped the insulation a bit to cut the wires one by one. This is what's inside the black cord. Three wires. I wanted to test each one to see what went were since I've never done this.
The green is ground. I'm just checking continuity on the plugs and wires.
The white is neutral.
I had never noticed, but when you look at the cords like this, top left matches top left on the right plug. Same with the top right plug and the bottom plug. Just something I noticed.
I finally got some spade connectors. I went to the local store and they wanted a couple of bucks for a few of them. So I just drove to HF and got me this box for like 9 bucks. Now I have some left for when I need them later on. This cord actually looks pretty good on it now. Since I'm taking my sweet time I might as well do a nice job.
http://www.harborfreight.com/520-piece-terminal-set-67686.html
Here's the PS plugged in. Can't tell with the flash, but no magic smoke coming out of it yet. The fan is temperature controlled and did not turn on which makes sense because I only plugged this in for a little bit. It would be nice if these came with a power switch. I just realized it would come in very handy.
So I took a few DC voltage measurements and my PS was a bit under the rated 48V.
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