Sparkfun's EL Escudo Dos breakout board uses this circuit for an EL wire driver channel, with R2 = R3 = 330. <br>
I was wondering what the function of  R2 and R3 is? Are they required? What would happen if they were simply replaced with a short?

EDIT: additional info<br>
The HV lines are 110VAC and the channel will be driving EL tape (I think resistive and capacitive load?)

![enter image description here][1]


  [1]: https://i.sstatic.net/TWXa0.png