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Looking at 2 Uninterrupted Power Sources, CST1500SUC and CST135UC2. Which should I go for? (lemmy.world)

submitted 5 months ago* (last edited 5 months ago) by TheGoldenGod@lemmy.world to c/asklemmy@lemmy.ml

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Both are on sale at Costco, at the moment.

$109 https://www.cyberpowersystems.com/product/ups/battery-backup/cst135uc2/

$170 https://www.cyberpowersystems.com/product/ups/battery-backup/cst1500suc/

I got a rig with a i9-14900 with a 4070ti Super, but with local brownouts I was hoping either one will cover it. Hoping to go with a cheaper option, but if the group consensus is the more expensive option I’ll go for it. Thanks for the help! 🤞🤞

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[–] lemming741@lemmy.world 4 points 5 months ago

Computers use switch mode power supplies. The first step is a bridge rectifier, they could run on a square wave or ~170vdc. Most have active power factor correction, which chops the incoming current up even more.

Cheap capacitive dropper power supplies won't like a modified sine. Simple motor loads won't either. If you're doing radio frequency work, it will be a huge source of noise but shouldn't damage anything.