Voltage and Current Baluns

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#204 In this video I continue looking at baluns by exploring what exactly makes the current balun different from the voltage balun. Both are commonly used, and both have similar end proprieties - they link a balanced signal to an unbalanced one, but what exactly makes them different?
Balun series:
Ep1 - Communication lines and baluns • Communication lines an...
Ep2 - Voltage and Current baluns • Voltage and Current Ba...
Ep3 - Energy coupling • Energy transfer in Baluns
Ep4 - Transmission line baluns • Transmission-Line Baluns
Ep5 - Transmission line experiments: • Experiments with Trans...
Ep6 - The Ruthroff Transformer: • The Ruthroff Impedance...
Ep7 - The Guanella Transformers: • Analyzing Guanella Imp...
EP8 - LC baluns: • Building INDUCTOR-CAPA...
Further reading:
blog.minicircu...
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Опубликовано:

1 окт 2024

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Комментарии : 16

@mr1enrollment Год назад

Just want tho thank and praise you for the excellent videos. I am a retired EE, and your videos provide welcome refreshing of my 50 years past education. These past two videos in particular have FINALLY impressed upon me the difference and use of Voltage versus Current Baluns - So Thanks!

@alaricsnellpym Год назад

In amateur radio circles, the operation of baluns is often hand-waved other, so for somebody such as myself who needs to know how something REALLY works to understand it... This video is helping a lot :-D

@ghlscitel6714 Год назад

Next subject for this topic will be impedance.

@paulp1204 Год назад

Great video Fesz. I haven't had to use baluns much before, but expect that to change now I've picked up the Han radio bug. Thank you.

@epleace Год назад

this is the first presentation of the differences between the balun types that has made sense to me - thanks for your excellent videos.

@BusDriverRFI 3 месяца назад

In your first computer simulation, you have a 50 ohm source feeding a 100 ohm resistor in series with a 100 ohm resistor in parallel with a 1 ohm/1uF to ground. Where did you come up with this model for the simulation? Where's the necessary inductance? Is it already cancelled out? How do you reconcile this model with the antenna circuit definition of R+jX? How do you unbalance a resistor in series with an inductor and capacitor? You are familiar with R+jX, right?

@andrew-qf4xl Год назад

great video, and thank you for providing a source for further reading.

@aduedc 11 месяцев назад

Thanks for good presentation. @7:47 I do not undersand why you connected single ended Voltage Source to Voltage Balun?!

@FesZElectronics 11 месяцев назад

To generate a balanced signal - maybe I didn't understand the question... the voltage source is unbalanced, but by using the balun, I created a balanced signal from it.

@lakshminarayanaaithal1081 Год назад

Can you make an detailed video on Ethernet transformer/Magnetics including CMC and Measuring it on oscilloscope. Please

@Mike-H_UK Год назад

Excellent video. I always find the topic of transmission line transformers very interesting. When one first looks at them one is tempted to think 'how can they work?' because there is no magnetic field outside of a coax line. However, that is only when the currents are balanced, when getting to be balanced there is a field! I've read a books by Jerry Sevick and articles by Chris Trask, and made a dozen or so twisted pair transformers myself, but your perspective on this (one that I respect) would also be very interesting.

@layt01 Год назад

I think it is more usual to have pure differential load, without RC grounding in the middle. I am looking forward to the next episodes.

@urgtuiop5455 Год назад

what frequency do things start to work?

@Cynthia_Cantrell Год назад

That depends on the magnetic materials of the choke or transformer. You'll need to pick the one that fits your application - audio for low frequencies, or RF for higher frequencies. A transformer's useful frequency range will be provided on its data sheet. Some applications will involve a DC blocking cap in series with it, so that may reduce the operating range as well.

@urgtuiop5455 11 месяцев назад

I couldn't see that level of choice complexity in the circuit model.