yea your right. i made a mistake but that answer is still incorrectCheck your math.
15 = 1.25 * ( 100 + R2)/100
1500 = 1.25*(100 + R2)
1500 = 125 + 1.25R2
R2 = 1375/1.25 = 1100
yea your right. i made a mistake but that answer is still incorrectCheck your math.
15 = 1.25 * ( 100 + R2)/100
1500 = 1.25*(100 + R2)
1500 = 125 + 1.25R2
R2 = 1375/1.25 = 1100
but it specifically states in the problem that the OUT-to-COM voltages is regulated at 1.25VHello,
Keep in mind that the reference voltage can be a little diffrent from the 1.25 Volts.
This can be of influence of the the value of the resistor.
Bertus
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