In my country we have 220V system. I have a fan that is rated 220V 80W with 3 speeds, but even the lower speed is too fast and noisy. Since a fan is basically a simple AC motor I figured I could reduce the voltage in order to make it slower.
So I connected an old 220-110V 50W adaptor and so far (30 minutes) it works and at max speed it runs very silently and efficiently. The adaptor which I'm monitoring very closely is running at ambient temperature.
My question is: am I doing it wrong? is there any danger? Thanks.
Best Answer
There are a few different types of voltage adapters, some of which are probably safe, and others will destroy the fan because the output contains a DC component. Check which type you are using.