#1719

[@michaelkaliski7651]

Basically power converters become magnitudes more efficient as switching frequency increases. So a transformer system operating at 50Hz and generating 100 amps might fit in a shoe box. The same power can be generated with a switch mode power supply at 100 kHz in a package the size of a cigarette packet. Smaller but high current inductors are necessary to operate at these high frequencies, hence these devices.

[@rahulkushwaha9500]

That yellow thing on the top is kapton tape or some other kind of tape, stuck there to allow vacuum suction nozzle to have a smooth surface to grab on, usually used in pick n place machines.

[@matteo234321]

6:14 "These things are generating 100A, cause' these stupid microprocessors eat up 100A." I laughed so hard! Very interesting component, keep up the great work!

[@christopherleubner6633]

It is a current probe transformer in most applications. The inner one has a frequency applied the outer one has the current feed through it. As the current increases the core saturates and allows more current to flow in the inner loop and the switching power supply senses this. It allows the voltage to be adjusted very quickly to meet the current demand. Also they can be used to isolate but couple a 1:1 signal magnetically, again speed is the desired outcome. Another thing i have seen these used for was laser flash lamp Q switch syncronization, in this use case the high current side of transformer is tied to the low side of the flash tube lamp and the inner coil is used to start the timer for the best q switch actuvation. Was in a eye surgery laser that used a Nd:Yag laser with an electro-optic pockrls cell q switch.

[@kensmith5694]

The main point is that when one PWM output sees that it needs to stay on longer, the windings linking the 3 inductors causes the current in the other two inductors to also increase. Thus you don't have to wait for it to cycle through all three phases before the current can get up to what is needed.

[@edgeeffect]

This is great.... like a return to our youth... what is it? Not sure. What does it do? Dunno. ... let's open it up! :)

[@Hellhound604]

Let us face it, for some of us old-timers, some of these new-fangled components and circuits and terms are just weird, lol… but thanks for shwoing me another new magical component which I never even heard of.👍👍👍

[@xenoxaos1]

4:03 I'm going to guess that putting current through the smaller loop the induction changes on the outer loop. Edit: close... I think the spikes in current will TRY to cause a change in the voltage. It will induce a current in the secondary they really can't go anywhere so it will be extra current in the inductor that causes the saturation to change. So I think it's altering the z shaped thing tidy you get when analyzing an inductors saturation and it can do it faster than the switching regulator can even notice the demand has changed.

[@jms019]

Could you make a small 3 phase buck and try them out under load please.

[@jainmanish123]

Interesting find and a strange part love chip of the day 😊

[@pglick123]

Everybody loves chip of the day!

[@Manf-ft6zk]

I found two other videos on TLVR on you tube, of which the first one is more easy to understand but it covers a totally different subject. The second one is a bit longer and it might support the understanding a bit. TLVR KZbin Channel Trailer (turning leaf vacation rental) An intuitive explanation of the multiphase Buck Trans-Inductor voltage regulator (TLVR)

[@mnoxman]

Pico electronics makes some very small form factors inductors and transformers too.

[@jercos]

The transformer stack in parallel to series acts as a "step up" between all the phases when a transient is common-mode between them, but not with the differential ripples of the individual regulators.

[@jack002tuber]

Send them out as Christmas gifts 😄🤣🤣🤣🤣

[@lmamakos]

"The perfect stocking-stuffer!"

[@quandiy5164]

At the start of the vid when one was cracked open, I thought it could be used to have the conductors wired in series or parallel to get two inductance values with just one part.

[@paulperano9236]

Thank you for all your efforts in creating this content. Have a great Xmas. Perhaps Santa will bring you a 90A sucking thing that runs on a multiphase switch mode supply 🙂

[@argoneum]

Connect buncha in series and make a vacuum tube audio transformer? 😸

[@flyer617]

Just guessing but if there is a minimum current then they might be relying on being in the saturation range of the ferrite to change characteristics based on current.

[@steves7189]

The little coil that could…lol

[@surgingcircuits6955]

Thx for your videos! Curious about some nostalgia... Would you be willing to do a video/dkemo on how using Logic Probes and Pulsers were used the past? Heard about them, but not finding any videos showing them and their use. Thx.

[@IMSAIGuy]

logic probe: kzbin.info/www/bejne/opuzl6N9dqqopassi=tBRVaEjngXxPw8Rb logic pulser: no I have not done a video. maybe someday. it is used to over ride a logic signal and force a transition.

[@surgingcircuits6955]

@@IMSAIGuy Thx. Maybe I misspelled when searching. Old man eyesight. :D

[@tolkienfan1972]

I'm not v good at EE, but I know something about digital circuits. The spec sheet mentions CPUs and GPUs. These are very sentitive to droop. 1s and 0s are constrained to particular voltage ranges. Additionally, CPUs and GPUs can very suddenly change their power consumption. As such there are usually arrays of capacitors. But these are small and relatively low capacity. The supply must be able to maintain a good tolerance in voltage, even if it means power losses. I suspect these components use inductance to help fill in as the load changes. They're probably not efficient for nice steady consumption, but excel at supplying sudden requirements.

[@channelview8854]

Are there application notes with reference circuits? Another thought. With two separate windings, a DC current thru one will vary the inductance of the other

[@dilbertnewton6864]

Offer them too the kiss analog guy, maybe he knows what to use them for ?

[@AnalogDude_]

100 coulombs? That's an insane high number of electrons. : )

[@Enigma758]

I would have thought they would have added diodes to isolate the output stage of each one so that when one droops, it doesn't pull down the others.

[@glasslinger]

Diodes are too lossy! The switch symbol represents a power FET with extremely low "on" resistance.

[@therealjammit]

Magnetic amplifier?

[@johnwest7993]

Use them as high frequency AC or DC RF line filters.

[@dimitarnikolov3527]

Try to make a joule thief out of these 😆

[@rorymacleod8488]

thats it ,,, i have now seen it all , i have reached my limit in understanding !!

[@staryduren]

maybe you can use them for filtering interference from high current power lines, if they are free, just add some X7R, transformer part may be interesting in eliminating particular harmonics.

[@lmantuano]

..droop..droop..droop, spike..spike..spike.... Precious!!

[@motherjoon]

Sepic converters also benefit from transinductors

[@mstover2809]

"Trans inductor." Does that mean it is a capacitor? 😅

[@mikehughesdesigns]

TLVR - Too Long Voluminous Reading...

[@t1d100]

👍

[@JD-eq1gk]

Sounds like a capacitor that identifies as an inductor.

[@pglick123]

It's a flux capacitor!

[@portblock]

I would live to see this on a scope, please please 😊

[@d614gakadoug9]

Of course a transformer can do something with one turn. Jeeze Louise! No, you don't get a "spike and a droop" and no, you don't put another one in because you can't go fast enough. The primary reason for multiphase buck power converters is to manage the ripple currents both in the input circuit (where the current is "chopped", going from zero to some high value virtually instantaneously) and the output circuit (where the current is typically continuous but with quite substantial ripple which works the output capacitors hard). Ripple voltage at the output is generally vastly less of a concern than the ripple current. It is quite clear that there is a lack of understanding.

[@rfburns5601]

Its kinda like the alternator on your car, its three phase so that you can get more consistent power from idle speed to cruising speed. It also reduces the peak-to-peak ripple voltage. The battery helps to filter most of the ripple. If your car's electrical system is under a load (headlights, AC clutch, and rear window defogger on - in my neck of the woods the dewpoint in winter gets so bad that you do have to run AC and heat to keep the windshield clear) between pulses of energy from the alternator, from the battery will hold the voltage up if it is in good shape and load isn't too high. If you're night driving in winter with a low dewpoint listening to the radio, and turn on the defroster and rear window defroster, and then notice a whine through the radio speakers, its a sign that you battery is losing capacity, so yes the voltage will droop between pulses of energy from the alternator. A real world example that illustrates Imsai's point.

[@StreuB1]

It is obvious who woke up today and decided to tattoo "Jerk" on their forehead......

[@rfburns5601]

From the title, I was thinking maybe these things identify as capacitors. Kinda like ELI the ICE gurl?

[@spicemasterii6775]

Are trans inductors real inductors? 🤔

[@kensmith5694]

You can't teach students about transformers in the state of Florida.