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 Wow that was a good price. Before i just bought a PSU for PC and used that a<s a power supply. It could deliver about 60 amps @12V. the only problem with that (and many other 12 volt supplies) is that when the load goes up to maybe 10 amps the voltage can drop down to about 11 volts. i need...

Well.. Now i just feeling stupid haha. I will put this project on hold and start reading some more :) Thanks.

nah I'll be careful. Trying to build a a power supply that can supply around 20 amps @14 volt. Here is the schematic:  http://www.zen22142.zen.co.uk/Circuits/Power/1220.htm And i have everything except a transformer and i can't afford one atm. So I'm looking for one :)

Update: I checked continuity with a multimeter. And every single pin makes the multimeter "beep". Every combination :S

Thanks for all the answers! So i found this ballast in my basement for a 400W HPS growing light. I took it apart and found that it has a BIG transformer. At least i think it's a transformer haha, same as before. do you have any idea where AC in/out goes? I would guess that AC in goes on the...

Oh. what is a choke? Bit of a noob here haha. I just want to convert 230v AC to a lower and safer value to work with. Thanks!

Thank you very much Admin for upgrading my account! I got this transformer from a working power supply so i know that it is working. I have never seen one with only two wires tho. Usually there are 4 of them or more. Two for AC in and two for AC out Here is some pictures of the transformer...

I just noticed that i can't post pictures without 10 posts.. How can i post/show the images? Thanks!

Got it! Thanks everyone :)

Thanks for all the answers! I think i get this a little bit more hehe, One more question. Like you said that it only stores voltages and not generates any, How come some components has low capacitors? I mean, even if you building a power supply that will generate 5 volts, why use (for example) a...

So, i have tried to read as much as i can about capacitors, but there are still some things that i don't understand. For example, Let's say that i have a 12v power supply, and before the output i put a 300 volts capacitor, does that mean that my output will be 300v? :S = stuff blows up haha. I...