12V 50A 600W power supply - oscilloscope waveforms

Showing various waveforms in the 12V 50A 600W switching power supply module on an analog and a digital oscilloscope. It's a 2 switch forward. The waveform on the main ferrite transformer, gate driving transformer (GDT), output inductor (on an iron powder core), MOSFET gates, primary smoothing capacitor ripple, output ripple, mains input current, changes in duty cycle, transistor current and so on.

Next episode - schematic & how does it work:

Previous episode - (re)winding the transformer:

First episode - the teardown of this power supply:

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[TradieTrev]

This crappy PSU you've modded has become a valuable teaching tool! The way you explain it and show us the waveforms is just perfect!

[FlyingShotsman]

This really should be a million-subscriber channel. That was some of the best circuit analysis and demonstration I've ever seen, and it didn't take $20k worth of test equipment to make it happen. Pure gold!

[t_Gecko]

Can you explain snubber networks in one video please? Love your channel!

[g.d.]

That pseudo-slowmo idea using aliasing is genius. Seems roughly analogous to equivalent-time sampling.

[rastapaez]

The more the technical quality of this channel improves, the more his particular accent increases. DOUBLE WIN.

[adriansdigitalbasement]

Such a great video series! I would love it if one day you could focus on the various ways these SMPS units do feedback, showing the signals and waveforms for that. (Going back to the magnetic coupled feedback on early SMPSs)

[stanimir]

An excellent take, major props. The output ripple is actually worse than I'd have though. One more video, replacing the caps with low ESL/ESR ones..

[astrazenica]

Very well explained, best explanation I've found here on YouTube. I am trying to learn electronics

[MegaSunRise]

This was really awesome and very interesting... especially that shot in slow motion. Great soviet oscilloscope also.

[sortofsmarter]

I always thought you had a old chunky oscilloscope, I now realize you have a classic irreplaceable tool that you operate with amazing precision and great ability to demonstrate it..Thanks

[pulsar]

Awesome. It's good to see all that in action.

[johnoddvar]

Thanks for an exelent Video. I have learned so much from you about switching powersupplys.

[alexloktionoff]

Thank you for detailed oscillograms and explanation.

[willrobbinson]

fantastic overview of operation, you have taken some time to get these "cro" shots ect, alot would not realize the time to do so, thanx so much for these vids ect

[blackartista]

I realized one thing in this field...the more you teach others the more you grow professionally. I'll keep sharing knowledge with others

[jp]

That was a great video. Really cool to see what is actually going on in a SMPS.

[kemalkurt]

Very informative video, you taught me electronics more than my university professor's. Thanks for your hard work and nice explanations.

[mac]

You are great in your field of work. Much appreciate your knowledge.

[TechGorilla]

So, lets take a look at it....and my cat of course...

[hernancoronel]

It is an awesome idea to measure the transformers with simple half a turn or a full turn of a piece of cable. I am always scared to measure with my oscilloscope directly fearing I may oversee some isolation and blow it up, using those wires it is almost impossible to blow it up. Thank you for another great video Diode!