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[No]Should I design an inverter?
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diyaudio:

--- Quote from: blueskull on June 25, 2016, 01:56:04 am ---I've been suffering from power outages for a while thanks to the power company does nothing on maintaining their wires.
I bought a Black and Decker 500W inverter just in case. Well, I had a chance to use it, as we had another power outage yesterday evening. To my surprise, it can not even power 2 22'' monitors, let along the computer.
I searched on Amazon for some good deals, and this time I was focusing on higher quality pure sine wave ones. Unfortunately, none of the low power ones look well built -- I do not want to waste money on a well build 2kW+ system, I just want to get a high quality 500~600W one.
Also, most cheap inverters use input ground as HV bus ground, that poses some safety hazard. I want one with its neutral wire connected to ground, or the HV subsystem completely isolated.

So, should I spend some time on building a super high efficiency 600W inverter? I do have the technology to build a 96%+ efficiency one, but that will cost me some time, at least a week, 2 hours per day. Do you think it's worth it?

--- End quote ---

600W, x1 EPCOS etd54 + simple SG3525A + fets, pcb.
however R&D time is the most expensive aspect especially winding those dam transformers manually and getting the control loop control stable. at that power level, its worth trying for.   
   
bitslice:

--- Quote from: blueskull on June 25, 2016, 08:09:09 pm ---
--- Quote from: ez24 on June 25, 2016, 06:58:13 pm ---Does China have Home Depots? (your flag says China)  Would love to see some pics of one.  I wonder if they look like our Ikea.

--- End quote ---

I live in the US.

--- End quote ---

Which isn't super helpful when other people are trying to evaluate your options...

btw, derate any inverter by 5 to get the actual output. Yo marketing.
rx8pilot:
It could have been the inrush current from startup that shut it down - not the average current.
mtdoc:

--- Quote from: bitslice on June 26, 2016, 01:16:16 am ---btw, derate any inverter by 5 to get the actual output. Yo marketing.

--- End quote ---

It depends on the brand. My Outback inverter meets it specs without breaking a sweat.

Like most things. You get what you pay for.

Any good inverter will have a brief max power output far above it's rated output to account for motor or compressor startups, etc.
Seekonk:
How can you not like this solution?  http://www.ebay.com/itm/Pure-Sine-Wave-Inverter-Driver-board-EGS002-EG8010-IR2110-Driver-Module-/171460635650?hash=item27ebd9ac02:g:iuIAAOSwfcVUKkIe
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