Rerurn to Romy the Cat's Site
In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Line interactive UPS & sinewave outputPosted by peter foster on: 12/4/2007
Dear Romy,
Thanks for the information that the sinewave form is only generated when the battery power takes over. The pdf is a good article. I did more research today and located a schematic which backs up what you have said despite the company's product description:
"A line interactive UPS contains a regulator that boosts the mains power supply when it falls. It can regulate power to an acceptable level, without the use of a battery, during a brownout or surge in supply voltage. Similar to an offline UPS, there is a short period (ie transfer time) when a line interactive UPS will switch to battery mode during a blackout. Most line interactive UPS units have additional features including sinewave output, enhanced software and connectivity options. They provide a high level of protection, at an affordable price, for corporate applications."
It appears that I should have been more careful in interpreting the meaning of "additional features including sinewave output". Let the buyer beware, so it is said.
In any event, I am getting useful protection and some regulation and, it seems, the rest relies on my amplifier's power supply design.
Regards, Peter Foster.
Rerurn to Romy the Cat's Site