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diy solar

Ok, i started ANOTHER project...

Supervstech

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I opened up my defunct APC smartups 2200, and pulled out the guts.
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I used to run a computer repair shop, and I had several clients that had me haul away their electronic waste...
Servers, monitors, printers, packs UPS etc...

I have piles of crap in my warehouses...
 
Sounds a lot like me from several years ago. No matter what you do it accumulates!

Is the UPS katput, ie boards dead? You could use those nice beefy transformers with a Chinese HF inverter board and end up with a reasonably useful LF inverter. The board PWMs on the input of the transformer to create the sinewave instead of linear driven transistors.
 
The ups works fine. The frame had a ton of missing rivets, and it was rickety.
Also, the mass was so heavy. I figure I can build a modular setup and make it far more portable.
Sounds a lot like me from several years ago. No matter what you do it accumulates!

Is the UPS katput, ie boards dead? You could use those nice beefy transformers with a Chinese HF inverter board and end up with a reasonably useful LF inverter. The board PWMs on the input of the transformer to create the sinewave instead of linear driven transistors.
i would love to be able to create a more efficient setup than the apc original... if you have instructions I could follow, I might give it a try!
 
Sorry, no instructions, I'm just aware that all of this stuff is available via ali*, ebay etc. Some of the well known low quality LF inverters more or less buy various boards and stick them in a box with a big transformer. If I had some beefy transformers sitting around I'd probably have built an inverter using these boards by now. You'd get the PWM sine board, a driver board, a FET board (for example, but you can get all this on a single board) and you are mostly done. There's no real feedback loop to speak of, so like the cheap LF sine inverters their output isn't particularly tightly regulated.


It's even possible to leggo a HF inverter together. Plenty of isolated HV boards to kick 12/24 up to 100/120/160/what ever and then into the FET board (different to the one above, this one handles > 400VDC from the HV DC supply) driven by the very same PWM sine board to PWM out through a big choke.
 
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