I was curious about how these works. Thanks for this video it really helped me to understand that. I wasn't expecting something like PWM to make the sinewave. I wanted to modify my modified-sinewave inverter to produce the true sinewave simply by adding a LC on the output, which really worked but it consumed about 40% of power so it was very bad solution and i removed it. To construct this, it will be much more difficult for me...
True sine UPSs aren't really that important unless you're running a motor. PCs and other things with switching power supplies work just fine on a square wave.
LC filters are used in very large (100s of megawatts) inverters on the end of DC power transmission lines, but I think they use more than just a 3 step waveform like traditional UPSs put out.
thats great. very cool.
srkh28 4 days ago
About 7:40 if you got lower voltage you woult have more turns to rise the voltage and vice versa.
So, if voltage is high mid-off down-on, if low mid-off up-on.
Sorry if I'm wrong.
costi08 2 weeks ago
Excellent and straight forward explanation!
igorparkman 1 month ago
thanks for explaining in such detail. Very good video!
johncarl43447 8 months ago
All respect !
georgeleus 8 months ago
Excellent demonstration!, I've learned a lot from that!. thanks!
Aussie50 1 year ago
Great explanation!
bkraz333 1 year ago
great video!! it give me the motivation to investigate my UPS XD.
RussellTuan 1 year ago
Awesome video! What model UPS is that?
That's a really sweet scope you have there. I'm still using a 10Mhz analog one.
Maxxarcade 1 year ago
@Maxxarcade It's an APC NS3000RMT3U.
Yep, these Agilent scopes are very nice, but there's nothing wrong with the older ones, they're perfectly good for a lot of jobs.
tesla500 1 year ago
I was curious about how these works. Thanks for this video it really helped me to understand that. I wasn't expecting something like PWM to make the sinewave. I wanted to modify my modified-sinewave inverter to produce the true sinewave simply by adding a LC on the output, which really worked but it consumed about 40% of power so it was very bad solution and i removed it. To construct this, it will be much more difficult for me...
filipkof 1 year ago
@filipkof Glad you liked it!
True sine UPSs aren't really that important unless you're running a motor. PCs and other things with switching power supplies work just fine on a square wave.
LC filters are used in very large (100s of megawatts) inverters on the end of DC power transmission lines, but I think they use more than just a 3 step waveform like traditional UPSs put out.
tesla500 1 year ago