fizmo psu

[FX23]

hi, what polarity should i use on my psu to power up my fizmo?

[garranimal]

All synths are a little different: some need DC power and some need AC. The Fizmo requires 9V AC power supply rated for at least 1000mA current. Alternating-Current power supply into the Fizmo therefore doesn't require polarity. That's because the DC rectification happens inside the synth.

[samuraipizzacat29]

this should work (heck it's the one I just bought for my fizmo, so we're both getting fried if it's wrong):



As garranimal said, there's no polarity on an AC power supply.

[FX23]

the psu for my fizmo had the option of negative or positive, which one should i choose?

[meatballfulton]

There is no negative and positive with AC!!

What is the supply you are using?

[FX23]

one that someone gave to me

[meatballfulton]

So what's the output voltage and current rating? Is it AC or DC? See post above by garranimal.

[FX23]

its AC-AC

[meatballfulton]

Then what do you mean by "positive" and "negative"?

AC doesn't have a +/- like DC does.

[FX23]

its a AC-AC adapter and you can choose between a positive tip or a negative tip

[FX23]

[FX23]

what happens next?

[Yekuku]

As meatballfulton said, AC power supplies have no polarity.
Obviously the power supply you have is not original and probably it has a generic enclosure that Chinese manufacturers use for both AC and DC psu's.
Whatever the polarity is set, it will work.