Hello,
I am trying to find the series resistor for custom led on main?
see if there is 220V ac i convert to c with bridges rectifier it will be 220xsqroot 2= 311v so, for 1.7v led 331-1.7=309v
for 20mA it will be 15.47k is thi right?
I am trying to find the series resistor for custom led on main?
see if there is 220V ac i convert to c with bridges rectifier it will be 220xsqroot 2= 311v so, for 1.7v led 331-1.7=309v
for 20mA it will be 15.47k is thi right?
