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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Voltage waveform & amplifier power supplyPosted by peter foster on: 12/4/2007
Dear Romy,
The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information for me pre-purchase. At the time of my investigations, I consulted a number of people with expertise in the field of mains power supply regulation and amplifier and transformer design and came to the conclusion that the minimum requirement was for a perfect sine wave output, no fan and for a unit that was proven with large scale commercial server systems. After receiving one unit and testing it the results were acceptable and the cost reasonable so I then purchased more. There is also a manufacturers warranty supplied for equipment connected to the UPS units. But that is only part of the story. The other parts include use of a dedicated branch line for each unit and perhaps even more importantly the design of the amplifier power supply itself which can do much to supply consistent performance with inconsistent mains power supply. The schematic for the amplifier power supply is described at http://www.turneraudio.com.au/8585-amp-october-2006.html if you are interested.
Regards, Peter Foster.Rerurn to Romy the Cat's Site