Electronics > Beginners
Easy schematic - calculating voltage
(1/1)
nForce:
How to calculate voltage in the node point (blue)?
If the resistors had all equal value then it would be just the average voltage of all voltage sources.
mvs:
--- Quote from: nForce on November 15, 2018, 05:41:07 pm ---How to calculate voltage in the node point (blue)?
--- End quote ---
Kirchhoff's current law:
I1+I2+I3=0
Ohm's law:
I1=(U1-U)/R1
I2=(U2-U)/R2
I3=(U3-U)/R3
Calculation:
(U1-U)/R1+(U2-U)/R2+(U3-U)/R3=0
(-1.5-U)/100+(0-U)/150+(5-U)/200=0 | x600
(-9-6U)+(-4U)+(15-3U)=0
-13U+6=0
U=6/13=0.4615 V
Navigation
[0] Message Index
Go to full version