Electricity Question: Switched Mode PSU's and Voltage Regulation

[Goosemaster]

Situation: small office environment
Available power: dedicated 120V circuit to an outlet
equipment: general 120v-only desktop and server gear

Assuming that you have input voltages that never exceed +-10% of 120V but drop to 108V repeatedly due to issues from the mains that are beyond your control, is your SMPS equipment generally safe from regular drops like that? (assume that a suppressor is in place for quick surges and that overload issues are not taken into consideration)

Short of a major brown out, are there any general rules of thumb as to what extremes SMPS' in commodity computer equipment can work with without severely impacting their output voltage levels and damaging equipment? (Besides reading their individual labels)

P.S. I am not planning on doing anything with this information except learning more about the real-world capability of mass market SMPS'

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There is a "Power Supplies" forum, that is more appropriate for your query Goosemaster.

Zim Hosein
Moderator.

 

[Jeff7]

A lot of computer power supplies these days are universal AC input, which I see defined either as 85-265V, or 100-240V. I would expect that such a power supply would do just fine.

A power supply in question should list its allowable input range on its label - or else look up its part number online for a specsheet.

 

[DesiPower]

ibtm

 

[Goosemaster]

A lot of computer power supplies these days are universal AC input, which I see defined either as 85-265V, or 100-240V. I would expect that such a power supply would do just fine.

A power supply in question should list its allowable input range on its label - or else look up its part number online for a specsheet.

I had a AVR relay go out at a client and started day dreaming of living a more simple life.

thanks for the feedback.