Hi, I have a 1500w inverter, 12v- 220v. I have used it to power all lighting and appliances with no problem except for the computers power supply. Whenever I plug the computer( even if its turned off) all the open lights would flicker on and off and the computer would not power on.No tripping on the inverter.When i removed the plug,all lights are back to normal. When i switch to grid power, computer and everything is working fine. pls help.
inverter problems
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I'll bet this is a desktop/tower computer, not a laptop with a "power brick" in the cord. Computers have a large switching power supply. This supply has large capacitors that charge up, and power a large internal DC-DC converter. You inverter is most likely a "modified sine wave" inverter, which is what "square wave" inverters are mis-labeled as. Square wave inverters do not have the full voltage peak that a sine wave has, and is unlikely to be able to charge the power supply caps to full voltage.
If you know how many watts your computer needs, you can get a pure sine inverter to power just that item. Unfortunately, pure sine inverters are not cheap. Morningstar makes a nice 300W one, that can surge to 600W for 10 min, and Exeltech also makes some small sine inverters, but I don't know if they have 220V models.Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister -
Tnx a lot. you,re right, Its a tower desktop. and the inverter says "modified sine wave". I have taken a reading on the electric meter and it shows 0.5 kwH for 4 hours continuous usage of the computer alone. Supply for the monitor and all other accessories is from solar. Ill start looking now for a pure sine wave inverter.Comment
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How about these small UPS that offices use for computers for a few minutes during power interruptions, will the inverters in them be able to survive hours of continuous use?Comment
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a) the batteries in them are only good for about 15 minutes.
b) if you connect to larger batteries, they will BBQ themselves in 30-40 minutes, because they lack heat sinks and cooling fans.
There is no cheap way to solve this.Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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