12V regulated PSU

[boscoe]

I'm wanting to make a regulated PSU as in using regulators not a transformer. I can't find any with a high enough input, the max i can find is like 35v to 12v. I want a 12v output at the highest current output possible. I need a place to find the components and a schematic to create the project. Thanks

 

[mbarazeen]

you mean you need an electronic power supply without using an ordinary transformer?

 

[boscoe]

Yeh basically

 

[Roff]

Do you have good health and life insurance?

 

[boscoe]

Ha why is that?

 

[Roff]

Ha why is that?

Working directly with AC line voltages, without transformer isolation, is very dangerous, even for persons with a good knowledge of electronics.

 

[boscoe]

Is there any other way of converting 230v safley without using transformers?

 

[mbarazeen]

if you only want to have a PSU of high current then you can find many online, tell whats your elevel of experience in electronics, and where you are going to use this unit? transformers are so comfortable and so safer than switch mode power supplies unless otherwise needed for some specific requirements.

 

[boscoe]

yeh it was more of a project that would be usful and that would have small dimension that will keep weight to the minimum, i would like around 20A max although around 10A would be fine. I will be using it in my shed for powering a small 12Vdc compressor rated at 14A

 

[Sceadwian]

Use a PC power supply. I'm guessing you'd need between a 500-600 watt ATX style supply to provide that many amps on the 12 volt rail. They're easily modifiable to turn on and off with almost any type of switch. No point in building a circuit when there are cheap commercial devices available. Best off, there's a modest chance you can find someone with an old PC that has one that will meet your needs so it could be free. It'd be difficult to get smaller and lighter than a PC ATX power supply for what you want.

 

[mbarazeen]

i got one 12V, 24A power supply from china 6 months before, try eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices and search for power supply, you can find very nice ones.