Can You Substitute a Different Power Source for a 9VAC 1.3A?

[sdusheyko]

Hello

i need a 9VAC 1.3A source but it's hard to come by... is there a way i can use a similar source?

i don't know too much about this sort of thing but from what i understand the power output is more important than the individual current or voltage out... is that right? for example, my source would have to be around 12W output (p=iv=1.3*9=11.7watt.) or does the current and voltage rating actually matter?

could i add a resistor to say a 12vac 1a source to drop the voltage to get what i need?

what about vac verses vdc; does this really matter? if my wall socket output is 3p anyway, isn't that like vdc since it's constant?

i'm confused, any help would be much appreciated!

 

[Sciurus]

Hello

i need a 9VAC 1.3A source but it's hard to come by... is there a way i can use a similar source?

You can convert one voltage AC to another with a transformer; that's probably easiest.

i don't know too much about this sort of thing but from what i understand the power output is more important than the individual current or voltage out... is that right? for example, my source would have to be around 12W output (p=iv=1.3*9=11.7watt.) or does the current and voltage rating actually matter?

It depends a little on what you're powering, but voltage usually matters.

could i add a resistor to say a 12vac 1a source to drop the voltage to get what i need?

If your device draws a constant current, you can make a voltage divider, otherwise, no.

what about vac verses vdc; does this really matter? if my wall socket output is 3p anyway, isn't that like vdc since it's constant?

Again, it depends on what you're powering. An incandescent lamp would work on DC or AC. A heater coil would work on both. Anything more complicated probably wouldn't.

Good luck.