How [NOT] to MAX test a power supply!

How hard can it be to max power test a power supply? After finding out my laboratory power supply will deliver more volts than advertised, I have decided to test how many watts it will deliver. The issue is that I don't know how? In this video, I will give it some attempts and learn from the mistakes... Will the power supply deliver the watts it is supposed to?

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#Max #Watts #PowerSupply

[thegoldengood]

time to miserably fail my exams by using 90% of my brain cells, powering off when realising the paper has a back page

[iamdarkyoshi]

Mike's electric stuff has an amusingly simple means of load testing, just put some enameled copper wire in a bucket of water. The enamel is thin enough it can conduct heat from the wire into the water, but prevents it from corroding from being a dc potential in water. Tune the amount of wire to the desired resistance, and then if you need a longer runtime, use a bigger bucket of water.

[gallium-gonzollium]

1:52 “I can even watercool it” this made me laugh more than it should have

[bernik]

It is normal for lab power supplies to go a bit above. That way they make sure you can get up to 30V and not 29.99V

[thegeek]

I really like the electronic load unit. Never seen one before. I also note that when using the 3 ohm resistor it still hit 31.7V @ 9.68A which is over the rated 300W. So even though its cheap, its pretty damn good too.

[StormBurnX]

I would love to see the benchtop power supply's output on a scope. Wonder how noisy it is.

[Barkingstingray]

Crazy to think the first time I saw one of your videos was when I was a sophmore in highschool extremely excited to show my physics teacher your content. Fast foward 3 years, I go to school for physics, 4 more years, I graduate, and 2 more years since then working in the field :) (wow insane, 9 years of your videos) thank you so much for your inspirations and learnings, this type of experimental and hands on content feels so much like a consequence free (for me haha) lab in university and i just love it

very proud to be a patron after all this time

[stu_jam]

Collab between Braniac and Elctroboom? Blow electronics up with lasers!

[XShadowCatzX]

No matter what happens in that day, if Brainiac uploads, it’s a good day.

[sarowie]

Interresting. I rember Dave Jones (EEVBlog) torture testing a PSU with an electronic load set to constant power.
Electronic Loads are awesome, but as you have already experienced: It is very very easy to get them to oscillate and from there, you can kill power supplies.

[Gubby-Man]

8:17 I love the 3210. Used to play Snake on it all the time as a kid.

[katranian]

Another quality video! Keep it up, we enjoy these!

[AaronBlankenship]

This is a critical teaching method that some people do not get right: you must show failures. Human simply do not learn properly without failures being involved in the lesson.

[GQuack]

This was a rather interesting video, and not what I had expected just by seeing the thumbnail. Keep it up!

[dimitary]

... The two devices fighting because of ohm's law has to be the most unintuitive but obvious error. I want an episode just on various caveats like this where obvious things are easy to miss.

[Darkshadow]

Really interesting video, i was genuinely surpised about the instability issue. It would be really nice to see with a scope the ripple on the voltage waveform.

[cbfull]

That a “reverse power supply” is a thing is so amazing 🤩

[OkiemElektroniki]

Very cool video and great explaination of basics electric laws. btw. It would be nice to make a video about efficiency of that power supply, for instance make a graph every few volts and see how much power does it consumes vs how much power it gives.

[MarkkuS]

8:15 As a Finn I always appreciate the mentioning of our lost Art of mobile phone industry.

[AluminumOxide]

6:49 notice the lego model of the International Space Station!!!