LED Cube 8x8x8

Step 11 Buy a power supply

If you don't have the parts necessary to build a 5V PSU, you can buy one.

eBay is a great place to buy these things.

Search for "5v power supply" and limit the search to "Business & Industrial", and you'll get a lot of suitable power supplies. About 15 bucks will get you a nice PSU.

Comments

[loup123456789]

This one it is good ?

http://www.powersupplydepot.com/Power_Supplies/Bench_Supplies/0-18V,_0-3_A_Variable_Benchtop_Power_Supply_9600_PS.asp


If not can you send me a good one.

[loup123456789]

This one it is ok
http://www.electronickits.com/kit/complete/powe/powersupply.htm

[jwestenberg]

Well it only outputs 500mA And it only works with 110V, so I don't think it will work!

[loup123456789]

This one it is ok

[venecha]

Since I didn't already have a lab power supply, I purchased one of the AC to DC switching onroes. Most of the electronics projects have only used DC power or I've used a wall wart. Before I hook this up (and do injury to myself and/or others), I wanted to see if anyone could clarify the terminals on the supply.

They are:

AC IN (L)
AC IN (N)
Ground
V- (I know what these are for)
V+ (I know what this one is for)

If I'm hooking up the AC side, what is the difference between the L and N posts? I'm guessing that my AC cord would have one wire going to the grount and one to one of the AC terminals? Or would that be used only if I have a 3 prong AC cord?

Thanks for any input!

[chr]

If you use a two wire AC cord, you connect the wires to L and N.

N is neutral
L is "hot"

[dumle29]

does it matter if you switch them around?

[bkeaton]

It does indeed. Perhaps not to the psu, but to your safety. It depends on how the AC is wired on psu. For the same reason you never wire a light bulb socket or any switch for that matter with the black wire running to where the neutral should be. This is because when you touch the outside of the bulb socket, you are actually touching the neutral wire. If you wire the hot lead to the outside of the socket, the socket shell is now energized and if there is an electrical fault or you touch the shell and are grounded, you will probably get shocked, or worse. So, don't switch them around, they are labelled for a reason.

Let me just say that I am not at all an expert on electrical wiring, so what I say should be checked out with a professional electrician.

[pintecan]

schematic???