openinverter forum

Saw a thread on HackerNews about this today:
Article:
https://www.instructables.com/DIY-Pure- ... -Inverter/

Comments:
https://news.ycombinator.com/item?id=36144033

Thought it was an interesting idea, I have a Victron Inverter on my boat that converts the 12V Lead Acid battery bank into domestic, can "only" do 1kW and I am sure it cost £1000. I bet Victron has plenty of safety features though that a DIY design would lack initially.

Good quality used pure sine wave 12V DC -> 230V AC inverters cost today with about 1kW power 100€ in germany.
But DIY is always a more freedom respecting solution
Sadly the example is using some linear regulating crap that kills efficiency. 7805, 7812 and so on should not be used any more anywhere. If you do not want to rethink your circuit you can use a drop in DCDC replacement.