Need Help with power supply

[rvid22]

Hello Guys!

I need help with my casio piano that has no power adapter. The back says DC 12v + -. I'm just wondering if I can plug an another power adapter that has 12V 2am + - ? I went to their website and it says requires 12V 1.5am + - I'm just wondering what's the difference between 2am vs 1.5am will it break my piano?? I just don't want to spend another $ 30 for power adapter when I have extra one. I appreciate your help. God Bless!

Rec

 

[audioguru]

The starter motor in my car uses 400A from the battery. The clock in the car also uses the battery but uses only a few thousandths of an Amp, not all 400 Amps.

Your piano uses 1.5A or less. It will work fine from a 2A supply that has the same voltage.

But the polarity must be correct or the piano mught blow up.

 

[rvid22]

Thank you it works and by the way the polarity did not match when I doubled check the piano is + - and my adapter - = so what I did i just cut and switch the wires and it worked like a charm! thanks again, audioguru!

 

[Jaguarjoe]

You need to know if that walwart was regulated or not. Unregulated ones only provide 12 volts at full 2 amps of current. Currents lower than that will cause the unit's voltage to increase well above the 12 volts you desire.
A regulated walwart will maintain a constant 12 volts from no load to full load.