Uhm... Do you want to _power_ the electroluminescent wire with an Arduino, or just turn it on and off with an Arduino? What effect are you actually trying to acheve?
(Have you looked at the Instructables which describe how to work with electroluminescent wire, and how to use an Arduino to control things? Insert slot A very fine and around tabbing 2...)
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Here is some EL WIRE data I just measured on three EL drivers
Unit_1 Single AA_Cell Battery
No_Load 300VAC 600Vpp 90us period 11.1KHz
Small_Load 150VAC 300Vpp 450us period 2.2KHz Sine
Unit_2 Two AA_Cells in series Batt.
No_Load 250VAC 500Vpp 40us period 25.0KHz
Full_load 100VAC 200Vpp 800us period 1.3KHz Sine
Unit_3 a 9VDC Battery
No_Load 200VAC 400Vpp 450us period 2.2KHz Sine
Full_Load 150VAC 300Vpp 450us period 2.2KHz Sine
Included are several waveforms 100 V/cm . . . . . . . A
(Have you looked at the Instructables which describe how to work with electroluminescent wire, and how to use an Arduino to control things? Insert slot A very fine and around tabbing 2...)