AC regenerator - suitable for audio equipment?
firedog -- Wed, 12/16/2009 - 00:19
Came across this link http://www.upsforless.com/liegxt22000rt.aspx for AC>DC>AC power regenerator/UPS (one of several similar units at the site).
Made for electronic/hospital equipment, but not specifically for audio. Does put out sine wave AC.
Is this suitable for hi-fidelity equipment? Is so, it's a good deal, as similar devices designed specifically for audio equipment are about double the price.
If it's not suitable, can you tell me why not? I'd like to understand the issue a bit.
Thanks
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I can't speak for the audio performance, but from a sensitive scientific instrument standpoint. We had a larger version of this type of UPS hooked up to a Circular Dichroism Spectropolarmeter in a former lab of mine. What that instrument does is not important here, but how it responded to the UPS is. The baseline output of the signal was much, much less noise with the UPS running through the batteries than a direct AC line (you could switch this on the fly with the UPS in question). The only down side of using a UPS for audio I could see is that the power drain might be higher (higher electric bill) and eventually you will need to replace the batteries. These are usually lead-acid batteries and not cheap. I would look into the expected lifetime of one set of batteries and compare that with some of the units designed for audio power regeneration. From UPS units this size I've used in the past the batteries have needed to be replaced every 3-5 years, what you'd expect for a lead-acid battery.