Is it possible to split one dc power source into 2 isolated power sources?


Reason im asking is because I have a sound system that requires 18+ and 18- @ 1A and instead of using 2 regular power supplies to do this, i was wondering if it was possible to split a single source into 2 isolated ones...




Thanks in advance

 

They do not need to be isolated.
Yes, you can create a split DC power supply from a single DC supply.
What is the voltage and current rating of your DC supply?

 

The current is 18 V 1A from the powersupply

My sound system needs

0v
18V
&
0v
-18V

 

Splitting the supply into ±18V will half the current so you will only have 0.5A available for each voltage. You need another 1A power supply.

 

My mistake in Info, I do have a 2 amp I want to split into two

 

Good. Then you need a 18VDC to -18VDC converter.

LM78S40 is shows one example of how to do this.

 

If you don't want to build it yourself, here is an example of a DC-DC power supply.
This one outputs +/-15VDC @ 1A

http://www.digikey.com/product-detail/en/VYC30W-Q24-D15-T/102-2419-ND/2753217