03-22-2015, 06:25 AM
Tom, if you read the article.
You probably have a cheap UPS, What you need is an always "ON LINE" UPS. You can get offshelf ones but they are expensive.
A dual conversion UPS like this runs the inverter all the time. Most UPSes don't do that. They're "standby power supplies" instead, in which the inverter only runs when mains power fails. The rest of the time, they just pass mains power through to the output, maybe with good filtering, maybe without. The standby design makes the UPS more efficient, and also allows cheap units to have lower quality inverters, because the inverter hardly ever has to do anything.
There are also "line interactive" UPSes, which run the inverter all the time, though not at anything like full capacity; they also pass mains power through, while it's available. When power fails, the already-running inverter just picks up the slack.
Dual conversion, or "on-line", UPSes provide the best power filtering of the three flavours of UPS, and have no "cut-over" delay if the mains fails. But for domestic purposes there's not much difference, besides price, between the three.
This do-it-yourself UPS may be dual conversion, but it's about as elegant as it looks. Most people wouldn't want it.
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To email me click on Link http://is.gd/QMfVEX
You probably have a cheap UPS, What you need is an always "ON LINE" UPS. You can get offshelf ones but they are expensive.
A dual conversion UPS like this runs the inverter all the time. Most UPSes don't do that. They're "standby power supplies" instead, in which the inverter only runs when mains power fails. The rest of the time, they just pass mains power through to the output, maybe with good filtering, maybe without. The standby design makes the UPS more efficient, and also allows cheap units to have lower quality inverters, because the inverter hardly ever has to do anything.
There are also "line interactive" UPSes, which run the inverter all the time, though not at anything like full capacity; they also pass mains power through, while it's available. When power fails, the already-running inverter just picks up the slack.
Dual conversion, or "on-line", UPSes provide the best power filtering of the three flavours of UPS, and have no "cut-over" delay if the mains fails. But for domestic purposes there's not much difference, besides price, between the three.
This do-it-yourself UPS may be dual conversion, but it's about as elegant as it looks. Most people wouldn't want it.
-------------------------
To email me click on Link http://is.gd/QMfVEX