- Jan 2, 2006
- 10,455
- 35
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I have a slim power adapter for a laptop.
It takes in a range of 110-240V AC and converts it to 12V DV @ 6A. Doesn't need a fan and it's pretty compact.
I bought a 220/240V AC to 120V AC converter and its much bigger and has a fan constantly spinning even when the unit is only outputting 30W.
Why is this? Is stepping down AC to AC a lot more involved than stepping down a range of AC to DC?
It takes in a range of 110-240V AC and converts it to 12V DV @ 6A. Doesn't need a fan and it's pretty compact.
I bought a 220/240V AC to 120V AC converter and its much bigger and has a fan constantly spinning even when the unit is only outputting 30W.
Why is this? Is stepping down AC to AC a lot more involved than stepping down a range of AC to DC?