Basic Question re: converting from DC to AC

[TheKnightArgent]

Hey everybody! Thanks for taking the time to read this.

I'm getting back into electronics after over ten years, so I don't remember all of this so well.

I'm playing with an Arduino to play catch up, and it has a plug for a 9V battery pack. I found a AC adapter from a random electronic gizmo that I think I can use in the battery's place, but I wanted to make sure.

It's rated at 9v, 150mA. My question is... how do I know that this adapter will supply enough current? The battery, of course, is rated in mAh, so I couldn't find what kind of current it can supply when it's plugged in.

Can anyone explain?

Thanks again!

 

[(*steve*)]

It depends what you're doing, but if it's just the Arduino and some low power stuff, 150mA is heaps.

It might be instructive to measure the current.

See here.

 

[TheKnightArgent]

Thank you, Steve. That link helped a lot!