12V from 48 V?

Question

Ì have a 48V DC power supply and I need 12 V, is there a simple way of getting this 48 down to 12..?

Answer 1

You need a voltage regulator. There are several 3-terminal devices on the market. Sometimes you need a couple of resistors to set the output voltage, but 48 to 12 should be no problem.

Check this website and search for voltage regulators ...
www.digikey.com

Answer 2

Best thing to do is buy a dc to dc converter. you can get some diodes and play with them, or even a some zener diodes. Make sure they are rated for 48 volts before you start, or you will get smoke. If you put the diodes in series they will drop some volts for you, say 24 in a series. Or less give it a try if you like tinkering.

Any electrical supply house can order you a Dc to Dc converter.

Answer 3

You have a lot of options... the question is how much power do you want to burn to get there? Also consider your application and how robust this 12 VDC supply needs to be.

You can simply step it down through a voltage divider OR use a voltage regulator OR use a DC-DC converter OR.. OR.. OR...

Many choices... but it also depends on the needs of your application.

Hope that helps.

Answer 4

Yes u can but it is very wasteful . If u are to draw 2 amps the watts would be 2 * 12 for what u are actually using,but sense u got it from the 48 v supply your actual power consumption would be 48 * 2 .

Answer 5

You need a DC-DC converter. There are many commercial types available, for example at http://www.powerstream.com/dc48.htm.

Answer 6

transformer only can use in AC. I suggest u buy a new power supply.

Answer 7

Step down transformer, from Radio Shack. Not a simple plug in way, no.

Answer 8

By using a step-down transformer it is possible. That is the only way I know.