Hi
I cannot figure out how the IR2110 should work.
Scanned this forum, but only found some other stuff.
At first I thought my program is not good.
I found on www the .hex file for Ard Nano spwm.
Please have a look on the attached jpeg the scope images.
Is something wrong?
I noticed, that the IR2110 1HO and 2HO outputs are different.
Is it OK? Of the h-br does not work properly?

 

Welcome to AAC!
There seem to be a lot of spurious high frequency oscillations on your scope traces.
If the circuit is built on a pcb (not a plug-in breadboard) then layout, supply decoupling or undesired feedback could be an issue.
Do your Hin and Lin signals provide dead-time?
Please post a complete schematic.

 

Did you see this site as a guide?
https://tahmidmc.blogspot.com/2013/01/using-high-low-side-driver-ir2110-with.html

 

Hi
Thank you for the answers.
Would be great if somebody will post the SPWM scope images for ir2110+full h bridge.
I need some reference images.
Thanks

 

Hi again
Used a new program from www(by Akhil Satheesh):
https://solderingmind.com/arduino-nano-sine-wave-inverter-circuit-and-free-code
I changed my design from bipolar to unipolar.
Signal on output is clean, but wrong.
I am not sure why.

 

Hi
Looks like I cannot use Akhil Satheesh code, as my design don't have transistors on IR2110 inputs.

 

Hi
LC filter for 10kHz carrier question.
I have moved forward a bit, however the LC filter is not working.
I use 2mH and 10uF.
I just ask in case that somebody already did the calculations.
If not, I will start my own.
Thanks.