Underrated tutorial. This is really good. More videos on LtSpice is needed, like solving summation, examples, tip 'n trick etc. Thanks and love from 🇮🇳🇮🇳🇮🇳
At 18:22 the actual current is going right to left down the potential gradient (from higher potential at V3 to lower potential at V2). That current is (must be) in the same direction as Is (otherwise KCL would be violated at node V3). Is and R1 are in series and thus must have the same current and in the same direction. The reason I(R1) is listed as negative is because it assumes a current direction from left to right which is opposite the actual current direction.
You got to be careful wit LTSpice. The direction of the measured current is originally defined from the top to the bottom (I.E. from node a to nose b). So, when you rotate the resistor its keeps the same current from node a to node b. So if you rotate the resistor by 90 degrees three times, you will be a negative current.
Excellent introduction for someone like me just getting started with LTSpice. Thank you!
Underrated tutorial. This is really good. More videos on LtSpice is needed, like solving summation, examples, tip 'n trick etc. Thanks and love from 🇮🇳🇮🇳🇮🇳
i am a french newbie ! Your video is really useful for me. Thank's. Sorry for my bad english....
Thank you very much. You are a genius. 👍👍🔝🔝
At 18:22 the actual current is going right to left down the potential gradient (from higher potential at V3 to lower potential at V2). That current is (must be) in the same direction as Is (otherwise KCL would be violated at node V3). Is and R1 are in series and thus must have the same current and in the same direction. The reason I(R1) is listed as negative is because it assumes a current direction from left to right which is opposite the actual current direction.
You got to be careful wit LTSpice. The direction of the measured current is originally defined from the top to the bottom (I.E. from node a to nose b). So, when you rotate the resistor its keeps the same current from node a to node b. So if you rotate the resistor by 90 degrees three times, you will be a negative current.