A friend of mine gave me an older (used) UPS unit labeled "CyberPower 500SL. I've been in need of a decent UPS system for some time, mainly to combat brownouts, but hesitated to hook my computer up to this thing because it appeared to fluctuate in output.
I tested it using a ~60W lightbulb, plugged into one of the outlets labeled "Battery". When the unit was first turned on, it emitted a beep and the lamp flickered and then became steady. When I unplugged the unit to simulate a power outage, the lamp seemed to "waver" a bit in its' light output.
I was a bit concerned that the output was fluctuating, so I used a multimeter to determine how much of a variation there really was. Current coming straight out of the wall measured at about 110-115V, while the battery output of the UPS unit varied between 90-110V.
So, my question is, would there be any negative effect from hooking my computer (and monitor) to this thing? I don't want to put any extra stress on my PSU (and therefore, my components) via "dirty" power.
I tested it using a ~60W lightbulb, plugged into one of the outlets labeled "Battery". When the unit was first turned on, it emitted a beep and the lamp flickered and then became steady. When I unplugged the unit to simulate a power outage, the lamp seemed to "waver" a bit in its' light output.
I was a bit concerned that the output was fluctuating, so I used a multimeter to determine how much of a variation there really was. Current coming straight out of the wall measured at about 110-115V, while the battery output of the UPS unit varied between 90-110V.
So, my question is, would there be any negative effect from hooking my computer (and monitor) to this thing? I don't want to put any extra stress on my PSU (and therefore, my components) via "dirty" power.
