Bipolar PS off 12volt DC

[Joecool85]

Would that give me +12 volt and -12 volt?  If not, can you show me how I could get that?

[brett]

Hi.
If you split 12V, you will always get +/- 6V.
To get +/- 12V from 12V, you will need some sort of charge pump or switching circuit.  Converting from DC to AC, stepping up with a transformer, and converting back to DC is also an option.
The best solution will depend on how much current you want, and whether you want an elegant or cheap design.
cheers

[Joecool85]

I want a cheap/easy design 

[amokan]

I'm actually here looking for a cheap and easy design to do exactly the same thing... any confirmation on this doing what you need, Joe?

[brett]

Cheapest and easiest is to get a cheap 18 or 24V  wall wart and use a circuit as per the schematic above.
cheers

[amz-fx]

You don't really need the 1R/0.1uF on the output of each voltage rail...  you can just put a 0.01uf ceramic on each side or even use nothing as a replacement for them.

-Jack

[Joecool85]

Eh, for now I'm ditching the idea because I've decided on using a different chip for the project.  I'll come back to it though, I'm also going to be working on designing (eventually) some sort of automotive chipamp that will require this.

[Gringo]

Something like this?:



(Posted by puretube a while ago)