Very good video, tank you,

If using a high side MOSFET, it should be same, right?

Thank you

Best way actually is to connect HV DC type capacitor with ground of capacitor on common ground then a fast shottky "steering" diode connected between the drain (if mosfet) to the positive of cap. Cap will fill like crazy if steering diode pointed in correct direction. Discharging capacitor to load occasionally (battery to charge if you want) creates real power upon discharge. The cap will suck up all the Destructive Transients never problem with voltage spikes anymore and you get some power happening when cap discharges. Have two caps two diode and alternate their discharge so never a period of time during a discharge when transistor or mosfet is not protected by steering diode and cap.

thank you!

Thanks so much this is massively helpful

Thank you, you have saved my day.

After watching this video, I was disappointed to see you didn't have many videos on your channel. Your clarity and pacing is awesome.

Excellent tutorial, thank you.

Why are all the exmples on youtube less than 1 Mhz Fc ?

Thank you, great instruction.

I dont understand why the gain when omega = infinity, theres still omega at the bottom. Isnt the omega = infinity so j/omega(RiCf) = j/infinity = 0?

Great tutorial, Thanks. Correct the url to the book by removing the rightmost parenthesis or put a space in. kzbin.info/www/bejne/fJLYiqRue8mSiLM

Many thx

I tought the voltage spikes are due to the magnetic flux collapse of the coil! 😂

Great video, very clear presentation! I have 3 follow-up questions: 1. what is the physical nature of the parasitic capacitance ("where is it") ? 2. Does the voltage spike when switchig off cause electromagnetic noise? 3.What if one adds a capacitor on purpose parallel to the parasitic capasitance,,would that decrease the voltage spike?

Hi, can you tell me how much time I should let the reaction happen, to get Cl coated on only one electrode ( not excess to switch the terminals and re-run the reaction)??

i have a doubt sir , whether to choose 2.2k Ohm or 5k ohm or 10 k ohm thermistor, which is better ?

thank you so much!

Heh, im glad my colleague told me during my internship to use a flyback diode for an electromagnet connected to a PLC. I didn't fully understand what it did, nor did I find the explanation on Wiki very clear. Great explanation, you filled that knowledge gap for me :)

i have a question please , how can i calculate the suitable value of reference resistance ?

great

i am struggling to learn electronics, do you have any advice? thanks

thank you for describing, it's very clearly. the example takes mosfet as low side switch. if mosfet at high switch, when the mosfet turn off, the energy storing in the inductor will discharge to the parasitic capacitor of mosfet through Vdd and cause spike at drain as well? thank you!

thanks a lot for your work!!!

Very, very nice explanation master..... I ould like to know why we we have the spikes, please. Best regards from Brazil

You've just articulated the reason why I have stopped using semiconductors to switch inductors - the need to add extra components just to protect your switch. For example, I have a high-current 12V solenoid that I want to switch briefly with energy from a capacitor bank, using an adjustable timer circuit to dump the load into the solenoid coil. My system works perfectly when replacing the solenoid coil with an incandescent lamp, but when I try to sub in the solenoid, the back-emf fries even my strongest MOSFETS, IGBTs etc, no matter how high their supposed voltage ratings. It got too expensive in semiconductors, and too much trouble to solder in <protection> diodes... so I am back to using electromechanical relays to switch the current to the solenoid. Luckily the back-EMF from the relay coil doesn't seem to worry my smaller and cheaper MOSFET acting between it and the timer. Sometimes old tech is more trustworthy and resilient than newer in my experience.

10 microfarads is e-5 farads.

if your charging a cap with a voltage divider ur shooting out the R2 resistor!!!

U r life saviour ....i can't tell you how much u saved my time ...I was stuck on my derived equations and u just helped me a lot

so you can see here fets operate faster than 100 Mhz!!!

I havent seen one important use for a complex number yet. anywhere. you can have a 2 dimensional number set or whatever but its got nothing to do with the square root of negative 1.

good work on getting a book done! course looks cool too.

good presentation...during my time at a certain mobile device manufacturer (13 years ago), developing DC/DC converters, switching speed was the double-edged sword, as you want fast switching, but EMC is a problem, and that "wasted" energy in total capacitance comes from precious run-time, i worked on driver ideas to get to the Miller plateau "instantly", then a controlled slew rate through that, and a terminated/controlled overvoltage for the on-time... you "only" need to know actual capacitance of the first two segments, and a "useful" Vgth + desired headroom...possible, then, to get very quickly to turn-on, have a desired slew rate of the switch, but with very little "extra" gate charge, and equally-fast turn-off... not something you do in discrete logic, but fairly do-able in a complex driver. cheers!

Hi Kevin, first, i appreciate your YT content. I actually find that the way of doing the courses in a theoretical or academic way is good. Students are quickly tired of theory and love the practice. They also see much more concrete applications. Regarding the price of your book, I find that there is a huge difference between the price of the paper (which seems too high to me compared to what is usually done - eg: malvino, etc.) and the pdf version whose price is really very low. For the rest, I saw that lately you put videos that have nothing to do with electronics. A suggestion would be to make a separate string. Otherwise, I see that despite the quality of the content, the good electronic channels have few subscribers, which is a shame. Never give up ! Recognition can be a long time coming!

Thank you for this quality content.

THIS IS THE BEST!explanation I could have gotten

absolute high class

13:15 - I like the change in tone! It shows the teacher soul and implicitly the mission to convey the knowledge. There is no way you can sabotage yourself more than going on the web to get an answer and not going through the actual experience, when learning anything. Thanks for the wonderful material (I also bought the book!), it is a hidden gem on KZbin, and I'm learning a ton (breadboard and calculator on my side 🙂)!

I was doing my tube Neuman clone DCbiasing of tube voltage. I have asked someone professional to help me and its perfect via audio tests I recorded. Thanks for your video, I have watched this in search for tube mic biasing know-hows. Maybe its a relevant topic for one of your future videos? I find tube mics to be very versatile in tone, once you know of careful measured biasing!

thanks a lot

very helpful! Thank you so much!

Hello, great video in detail, thanks for it. By the way, that snubber diode can be a regular 1n4007 diode or it has to be a fast recovery diode such as 1n4148? thanks

Excellent explanation thank you

Thanks 👍

Hi, where can I find the Python script to filter the signal? Thank.

Hey gr8 video, how do I contact you...

So if my application is simply to digitize the output of a phototransistor with an ADC converter (which should have a very high input impedance), the transimpedance amplifier does not have any advantage compared to simply using a resistor? Or am I missing anything?

Video helped out a bunch. Cheers, student from Canada

So nice