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RE: Building an SLA battery powered supply

Posted by rick_m (A) on July 14, 2010 at 07:00:58

In Reply to: RE: Building an SLA battery powered supply posted by jedrider on July 13, 2010 at 17:07:15:

Well... if you are seeking isolation from the line you can't do better than batteries. And, since they can source DC all of the time, you don't get the music modulate noise generation in the diodes and the pulsating noise coupling to the line from the current gulps that were mentioned by Steve.

Theoretically that should be a good thing but from some of the comments in this thread I wonder if one can become habituated to that distortion/interference. Sort like a snare drum built into your power supply, you notice the difference if the snares are removed.

Another issue is the isolation itself. I would expect the sound to change a little, indeed improve if I isolate a component, that's the plan after all. However since you listen to the whole system, not just a component, other pieces like interconnects and grounding schemes that were optimized with the line powered piece may need to be revisited when using a battery for it. The end result however should be an improvement.

Rick

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