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davros
Newbie

Joined: 24/02/2025
Location: Canada
Posts: 22

Posted: 03:27pm 12 Oct 2025

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Watching you gents repurpose these inverter guts, I think it is great. So do they work semi reliably at their 1/2 rated power? Any variants that are ‘more’ trusted?
Davros

Godoh
Guru

Joined: 26/09/2020
Location: Australia
Posts: 574

Posted: 08:41pm 12 Oct 2025

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Hi Davros, I have a three inverters that I made using the Aliexpress boards.
It is hard to say which ones are the best as they are all slight variations on the same theme.
Each time I get a board they are slightly different. I always modify the 8010 board after the guidelines that Oztools set out many years ago.
I have had some of my inverters running now for around 4 years and never had any trouble with them.
I get transformer cores from wherever I can and rewind them, my system is 24 volt so I am for a maximum of 4kw output from them.
My main shed inverter is a home made unit with a 5kw aliexpress board. I use it every day and backfeed through it with two GTI inverters.
As I said they have been very reliable,
I have had PowerJack inverters in the past and they blew up with inductive power tool loads. After repairing the PowerJack a few times I gave up and stripped the transformers down and stacked the cores for rewinding and used the aliexpress board with it.
Cheers
Pete

KeepIS

Guru

Joined: 13/10/2014
Location: Australia
Posts: 1915

Posted: 11:11pm 12 Oct 2025

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You want boards something like these, they have Totem Pole drivers, there are some around that do not.

Inverter Board

Inverter Board

Inverter Board

NANO Inverter: Full download - Only Hex Ver 8.1Ks

davros
Newbie

Joined: 24/02/2025
Location: Canada
Posts: 22

Posted: 05:39pm 13 Oct 2025

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Wonderful! So much great development to study, thanks for sharing.

davros
Newbie

Joined: 24/02/2025
Location: Canada
Posts: 22

Posted: 05:40pm 13 Oct 2025

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Wonderful! So much great development to study, thanks for sharing.

tinyt
Guru

Joined: 12/11/2017
Location: United States
Posts: 467

Posted: 02:46am 14 Oct 2025

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Some inverter boards from aliexpress come with an SPWM module marked "Century".

Even though it is pin compatible with the more common EGS002, it is undocumented.
From testing, the one I received is configured for bipolar SPWM, and I cannot change it. So be ready to swap it out with EGS002.

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