I like your video. I have a small PV solar system and I just aquired a 1000w/1400va APC Smart UPS (true sinewave). With batteries installed, I can "cold start" it by holding the pwr button in. When I plugged it in to 120V outlet, mine did not work at all until I hooked 24V (2X12V car batteries) to the battery leads. I would suggest not to hook up a "power supply" to the battery leads to try to test it, for the supply may be damaged. The UPS is sensing for a battery, not a regulated pwr supply.
I tried once to hook an APC up to a -48 volt telco battery bank. I found that the UPS connects the negative to the earth of the UPS. Well it did on the Australian version, so it turned into a dead short.
It's funny that the earth is connected to the neutral of the 120volt output. That is a no no here, the only earth neutral connection should be made in the switchboard.
is there any way to make all the home power clean(sine wave)? can i do something to the circut breaker panel to clean the power there? im also interestted in seting up a home back up power supply augmented by solar power. an array of batteris would also be used based on some vids ive watched. thanks.
@Da9eI Hmmm, I haven't heard of air conditioners or incandescent lights doing it, but PC power supplies are bad for cutting the top off the AC waveform like this. Anything with a non power factor corrected switching power supply will do it.
What kind of power supply are you using :)
amswanson1256 6 months ago
I like your video. I have a small PV solar system and I just aquired a 1000w/1400va APC Smart UPS (true sinewave). With batteries installed, I can "cold start" it by holding the pwr button in. When I plugged it in to 120V outlet, mine did not work at all until I hooked 24V (2X12V car batteries) to the battery leads. I would suggest not to hook up a "power supply" to the battery leads to try to test it, for the supply may be damaged. The UPS is sensing for a battery, not a regulated pwr supply.
zip10940 10 months ago
What kind of DC power supply is that ? (The black one)
zaprodk 10 months ago
I tried once to hook an APC up to a -48 volt telco battery bank. I found that the UPS connects the negative to the earth of the UPS. Well it did on the Australian version, so it turned into a dead short.
It's funny that the earth is connected to the neutral of the 120volt output. That is a no no here, the only earth neutral connection should be made in the switchboard.
zforce69 1 year ago
is there any way to make all the home power clean(sine wave)? can i do something to the circut breaker panel to clean the power there? im also interestted in seting up a home back up power supply augmented by solar power. an array of batteris would also be used based on some vids ive watched. thanks.
YorkTown1781 1 year ago
that is deff a keeper!
hellsmaw84 1 year ago
great !! thanks a lot in advance.
I had a small UPS and did try it with My home made Amp.
It sounds better by hear on it. I did not know why and did not use Oscilloscope.
I got a good one lately (Tektronix TDS 340A)but not good as yours.
I learn a lot from your video,I will try it myself also.
Russell Tuan
RussellTuan 1 year ago
I think this is UPS is good for HIfi system, since it have such a good sine wave,and compare to wall AC.Could you try that for us?
RussellTuan 1 year ago
@RussellTuan I'll have to give that a try, but the high frequency noise may make its way into the sound.
tesla500 1 year ago
Mmm nice! Did you try to see what the waveform looks like when it's with some load like 1kw ?
filipkof 1 year ago
@filipkof I'll give that a try soon.
tesla500 1 year ago
Comment removed
filipkof 1 year ago
@tesla500 Great. Ok,I'll checkout Your videos soon.
filipkof 1 year ago
@filipkof I'll load it down fully and show how it works.
tesla500 1 year ago
Airconditioners usually mess up the "wall" ac sinewave, older incandescent lights with bad capasitors\filters can allso cause a messed up sinewave.
Da9eI 1 year ago
@Da9eI Hmmm, I haven't heard of air conditioners or incandescent lights doing it, but PC power supplies are bad for cutting the top off the AC waveform like this. Anything with a non power factor corrected switching power supply will do it.
tesla500 1 year ago