Uploaded June 2026 | Updated September 2026, 2 weeks ago
#278 In this video I go trough the steps of designing and then testing a balun. Rather than just making a random inductor, I decide to try am do things properly and design the transformer based on an actual use case. Once the transformer is built, I go trough various tests to try an validate the obtained performance.
Balun series:
Ep1 - Communication lines and baluns youtu.be/EojKvuc9xck
Ep2 - Voltage and Current baluns youtu.be/NkxLXQ32GDQ
Ep3 - Energy coupling youtu.be/83QRK1ULmY8
Ep4 - Transmission line baluns youtu.be/gS0YBCNYViY
Ep5 - Transmission line experiments: youtu.be/la1VS7YVE0M
Ep6 - The Ruthroff Transformer: youtu.be/iVuXRdcmmTQ
Ep7 - The Guanella Transformers: youtu.be/QAYaetJ1dvM
EP8 - LC baluns: youtu.be/Lne2knTHbds
Special Thanks to all my supporters on Patreon!
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
#278 In this video I go trough the steps of designing and then testing a balun. Rather than just making a random inductor, I decide to try am do things properly and design the transformer based on an actual use case. Once the transformer is built, I go trough various tests to try an validate the obtained performance.
Balun series:
Ep1 - Communication lines and baluns youtu.be/EojKvuc9xck
Ep2 - Voltage and Current baluns youtu.be/NkxLXQ32GDQ
Ep3 - Energy coupling youtu.be/83QRK1ULmY8
Ep4 - Transmission line baluns youtu.be/gS0YBCNYViY
Ep5 - Transmission line experiments: youtu.be/la1VS7YVE0M
Ep6 - The Ruthroff Transformer: youtu.be/iVuXRdcmmTQ
Ep7 - The Guanella Transformers: youtu.be/QAYaetJ1dvM
EP8 - LC baluns: youtu.be/Lne2knTHbds
Special Thanks to all my supporters on Patreon!
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









![Timeless ICs - Linear Regulators
#255 In this video I look at some of the oldest ICs that are still in use and production today. These are not the best in their class but they are well known and easily accessible. Most of these components are a common site both in older and newer devices and well suited for their job.
Related videos:
uA723 DIY BenchSupply [1/2] - https://youtu.be/ZZFIRvxPbyQ
uA723 DIY BenchSupply [2/2] - https://youtu.be/8E8V7Uw-3eg
Discrete Supply build - https://youtu.be/8ImywucbnKM
Supply teardown - https://youtu.be/xL2QDJvKV-I
Datasheets and References:
https://ve6aqo.com/Manuals/uA723_Application_Note.pdf
www.ti.com/lit/ds/symlink/ua723.pdf
https://www.ti.com/lit/ds/symlink/lm317.pdf
https://www.ti.com/lit/ds/symlink/lm137.pdf
https://www.ti.com/lit/ds/symlink/lm78l.pdf
https://www.ti.com/lit/ds/symlink/lm1117.pdf
https://www.st.com/resource/en/datasheet/ld1117.pdf
Special Thanks to all my supporters on Patreon!
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 Timeless ICs - Linear Regulators](https://i.ytimg.com/vi/EBFM2wS0GXo/mqdefault.jpg)
