laptop power supply question
ok im using one of those DC to AC convertors so my cars 12 volt is going to 230v and on that is my laptop charger which converts it back to 20v 6ampere... ok so first i took a 150watts convertor which made my laptop charger buzz all over the place which then offcourse hit my audio as well then i went for a 300watts convertor which is doing exactly the same... Why is my laptop charger making this buzzing sound when connector to an convertor it works fine in my home.. actually i dont care so much my charger is buzzing but this sounds is going through my audio as well. I tried installing an audio noise filter between the cables which kinda eliminated the noise but its still there aaaarrr
somebody have any suggestions on how to connect this laptop right and what I exactly need???
DC Auto Power Adapter for Notebook Computers
www.atbatt.com here you can find DC Auto Power Adapter for Notebook Computers