when i connect my laptop adapter to supply taken from inverter, it gives out humming noise and heats up more. Is it because of harmonics?

 

Then surely your inverter doesn't provide a sinewave at it's output, rather a triangle or stepwave (or even square wave). So yes, harmonics.

I managed to destroy the power supply of my oscilloscope while experimenting with a 5kW AC/DC converter on the same grid.

 

where do we get the harmonics related specs of the devices... i mean the harmonics it can tolerate... on the adapters, only the power frequency, voltage and current ratings are mentioned..

 

where do we get the harmonics related specs of the devices... i mean the harmonics it can tolerate...

for laptop power adapters? you don't. there would be to much to specify.

 

the answer is dont power it via your invertor.....if the powersupply fails you could have very expensive laptop failure depending on how the supply fails.......

 

the answer is dont power it via your invertor.....if the powersupply fails you could have very expensive laptop failure depending on how the supply fails.......

isn't it better to design a filter for it ??