[Ask] how i add a LED status for pedal power on Tonepad.com

[hendysp]

i'm so sorry if i post a basic question
how if i add a LED for on/off status for pedal power that the layout on the tonepad.com (http://tonepad.com/getFile.asp?id=111)
thank you a lot

[mth5044]

You can put an LED anywhere from Vout to ground with correct orientation and limiting resistor; however, if you are making it a variable voltage supply, you might have problems with the brightness of LED while you vary the voltage. You might want to use a resistor that is appropriate for the max voltage so it will only get dimmer as you turn the voltage down, and not blow it but turning it up to high.

[hendysp]

ok i will try it,
but i confused now about connect transformer to PCB, in my transformer in secondary side there are: 12V -- CT -- 12V, why i connect it to PCB from tonepad?