Uploaded September 2022 | Updated September 2026, 1 week ago
#170 In this video I look at various ways in which impedance can be measured in the circuit simulator, and how based on this measurement, an equivalent circuit can be determined. This time I mainly look at some basic RLC circuits - 1 port devices - just to be able to observe the clear correspondence between measurement and test circuit.
Correction: at 14:14 the theta angle is equal to the arctan of X/R
LTspice impedance part1 - youtu.be/l0f6c3AkTvA
LTspice impedance part2 - youtu.be/SJyVnGnwDXQ
Special Thanks to all my supporters on Patreon! Especially Ralf B., Paul Pr. Richard, Jonathan Alvarado and Tosta!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: patreon.com/feszelectronics
#170 In this video I look at various ways in which impedance can be measured in the circuit simulator, and how based on this measurement, an equivalent circuit can be determined. This time I mainly look at some basic RLC circuits - 1 port devices - just to be able to observe the clear correspondence between measurement and test circuit.
Correction: at 14:14 the theta angle is equal to the arctan of X/R
LTspice impedance part1 - youtu.be/l0f6c3AkTvA
LTspice impedance part2 - youtu.be/SJyVnGnwDXQ
Special Thanks to all my supporters on Patreon! Especially Ralf B., Paul Pr. Richard, Jonathan Alvarado and Tosta!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: patreon.com/feszelectronics










![EMC tutorials - [2/3] Testing the LISN
#117 In this video I start testing the LISN to see just how good it is. I look at multiple things starting with output impedance then go for insertion loss, input impedance and input side filtration and finally look at inter-channel isolation or cross talk.
More on the topic:
Part 1: https://youtu.be/OEvkRW5vZNA
Part 2: https://youtu.be/nq-IhHbZdD0
Part 3: https://youtu.be/M_ab0Oz2ypI
Website with CISPR limits:
https://www.com-power.com/products/lisns/li-3100
Further reading:
AN-7_Measuring_a_Line_Impedance_Stabilization_Network(LISN) - https://coretechgroup.com/wp-content/uploads/2017/01/AN-7_Measuring_a_Line_Impedance_Stabilization_NetworkLISN.pdf
Special Thanks to all my supporters on Patreon! Especially @afiskon and Ralf B.!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: https://www.patreon.com/feszelectronics EMC tutorials - [2/3] Testing the LISN](https://i.ytimg.com/vi/nq-IhHbZdD0/mqdefault.jpg)