stanislavb
Full Member level 2
Hi,
I need calculate resistor 2.4 ohm let's say from Vishay:
I am taking 100W power resistor with overload rating is x10 for 5s.
Ambient temperature is 100deg. According graph derating it will be 80%. So effective power dissipation will be 80W.
Now I need dissipate 3000W. The pulse duration the resistor withstand is 3000W/(80W*10(factor)*5s~1.33s
The maximum working voltage will be V=sqrt(3000W*2.4ohm)= 84v.
Please review it and comment
Thank you
I need calculate resistor 2.4 ohm let's say from Vishay:
I am taking 100W power resistor with overload rating is x10 for 5s.
Ambient temperature is 100deg. According graph derating it will be 80%. So effective power dissipation will be 80W.
Now I need dissipate 3000W. The pulse duration the resistor withstand is 3000W/(80W*10(factor)*5s~1.33s
The maximum working voltage will be V=sqrt(3000W*2.4ohm)= 84v.
Please review it and comment
Thank you