08-28-2015, 09:13 PM
Yes, your calculation is correct. The power dissipated is 1.06 W. You can also use a simpler formula for power when you know the voltage drop and the resistance:
P= V (squared) / R or in your case (40 x 40) / 1500 = 1.06
Power rating of the flex resistors is pretty much a function of the length, as the longer it is, the more area of resistance winding is available to dissipate the heat generated.
P= V (squared) / R or in your case (40 x 40) / 1500 = 1.06
Power rating of the flex resistors is pretty much a function of the length, as the longer it is, the more area of resistance winding is available to dissipate the heat generated.
