shaneshane1
New Member
Hi just wondering if my calculations are correct on this subject?
I've made a voltage divider (in theory) with the output 2.1V from 12V
I used a 248R and a 52R with the output current at 20mA
is this equation correct?
12V/0.040A = 300R and 480mW
And
2.1V/0.040A = 52R and 84mW
300R - 52R = 248
R1 = 248R
R2 = 52R
I've made a voltage divider (in theory) with the output 2.1V from 12V
I used a 248R and a 52R with the output current at 20mA
is this equation correct?
12V/0.040A = 300R and 480mW
And
2.1V/0.040A = 52R and 84mW
300R - 52R = 248
R1 = 248R
R2 = 52R