Tagged Questions

5
votes
1answer
160 views

volt-ampere (VA) rating of UPS

I would like to ask about the volt-ampere (VA) rating of UPS. Is there any effect of this value in terms of the time period that the UPS can supply the power?
2
votes
1answer
108 views

Should I look for Aluminum or plastic enclosure for UPS

I am on the process of material selection for the UPS I am prototyping. My plan is to manufacture a product that should finally go to the market. I am relatively new to the manufacturing and I would ...
8
votes
5answers
588 views

Does reactive power cause extra fuel use in a Diesel UPS?

It is a bit of a theoretical thing, of little practical use, but I just want to understand the physics behind it. I am aware that I'm simplifying things quite a bit. In electric power we ...
10
votes
4answers
669 views

Don Lancaster's Magic Sinewaves

For several years now Don Lancaster is promoting magic sinewaves. They are strings of binary digits (like 420 bits for a full sine cycle) that, when used to drive a digital switch (MOSFET/IGBP), ...
3
votes
3answers
409 views

Plugging a UPS into an inverter

First off, I am aware that plugging an UPS into an inverter is a bit redundant. The only situation I can think of it being useful is in a car when you want full amps for cranking over the motor but ...