LED Indicator to 18v Phantom Power Box

[mmlee]

Hi,
Not really sure if this was the right place to put this but here goes.

Is there any reason why I shouldn't add an LED to this following circuit?  It's going to be for some Shure MX202's in a portable setup for where I work.  The mics work between 11 and 52Vdc with 2.0mA draw.


http://shure.custhelp.com/app/answers/detail/a_id/233

Will be doing this:


I'm maybe thinking about putting a Zener back to back with the LED as well so the LED dims when the voltage starts dropping, that'll be over the two 9v batteries..... I don't know really.......

Obviously none of this LED stuff is essential but if there's no reason why I shouldn't then I will.

Cheers,
Marcus