After connecting to UPS, some devices do not work

hn200918

After connecting to UPS, some devices do not work [Copy link]

I have a UPS at home. I just replaced the battery and plan to use it with a fish tank for uninterrupted oxygen supply. Everything is normal when connected to the mains, but when the UPS is powered, the two oxygen concentrators do not work, while the landscape lights work normally. What is the reason? The power of the oxygen concentrator is not large, only about 6w.

UUC

The voltage is not enough

qwqwqw2088

What voltage and power does the oxygen concentrator require?

chunyang

If the power and voltage of the UPS are both met, the remaining issue is the waveform. The output of cheap UPS is not a sine wave but a square wave with a lot of harmonic components. This type of cheap UPS is designed to drive devices using switching power supplies. Non-switching power supply devices need to analyze the impact of harmonics, especially when directly driving iron core and magnetic core components.

chineseboyzxy

Simple oxygen concentrators are similar to the principle of old-fashioned electric hair clippers, which rely on 50Hz AC to directly drive the coil and the iron core to work in reciprocating motion. This UPS may not have a 50Hz sine wave output.

hn200918

OK! I have a general understanding of the situation. Thank you very much for your help!

okhxyyo

Has your problem been solved? If it has been solved, please share your experience and tell us how you solved it.

孙正峰

It should be a square wave UPS

alan000345

Is there some circuit damage?