sana magtagal yung LED mo based on my experience, napundi kagad yung LED ko nung gumamit ako ng ganyang resistive value. 2.2k gamit ko.. sa lahat ng pedals, pwede yan..
Kaya siguro mabilis napundi ang LED mo ay dahil sumobra ang current (I). You need to know the voltage and current requirement nang LED para ma-calculate ang tamang resistor value. Bright blue/green LEDs have a typical requirement of 3V and 20mA. It will run at lower voltage and current, to a certain degree, albeit dimmer, but it will extend their life.
To calculate the value of the limiting resistor = (Vsupply - Vled)/Iled. For example, if you have a bright blue/green LED that typically requires 3V and 20mA, the calculation goes like this:
Rled (LED current limiting resistor) = (9V (supply) - 3V (LED voltage requirement))/20mA
Rled = 6V/20mA
Rled = 3oo ohms
Since 300 is not a standard resistor value, you can use the next bigger resistor value which is 330 ohms.