Abiqua
Well-Known Member
Finally got a chance to test the first cheapo AC DC 12V adapter ($5). It is a 1 amp unit, very small and light 70 grams. It is adjustable from 11V to 15V. It is slightly more efficient at 15V than 11V.
.1A fan - 60-65% efficient (@ 11V anf 15V respectively)
.2A fan - 60-73% efficient
.3A fan - 78-82% efficient
.75A 3 fans - 78-84% efficient
.95A 4 fans - 79% efficient
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Very nice! I was looking at one similar @FastT last night, the 12v 1A version is less than $10, great deal.
I have been looking at this one: $8
Last but not least I am wanting to build a solid state power supply, but way out of my already limited technical range. Texas instruments though, makes an on board MOSFET power supply, low voltage. Couldn't dig out the link yet......