EEVblog 1414 - MicSig DP10007 High Voltage Probe - Turning it up to 11

Can Dave destroy the Micsig DP10007 high voltage differential probe by turning the voltage up to 1100V RMS?
Plus a teardown of course.

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#ElectronicsCreators #HighVoltage #Teardown

[SeanBZA]

Probably the CMRR upgrade will be a tweak to the resistor values in the instrument amplifier, probably with either a select on test bodge resistor put in, or with a tiny pot stuck in the middle there to do the adjustment for the resistors being not ideal. Yes it looks nice, and of course the little microcontroller there, though I would say it also has a built in ADC that is being used to sample a rectified sample off the output, to flip the power and range LED to flash when approaching overload, and nice there is still headroom when it starts to flash clipping, so your measuring will still be accurate just before.

If you selected 1199.9 you would have a higher output off the

[davidwhite]

Hey Dave how about a tear down and analysis of the Gigabyte power supplies that are blowing up?

[Aan]

Hi David Just received my 2 differential probe and current sensor. That was really fast shipping, ordered it 19-08-2021 received it 24-08-2021 Grate work, looking forward to trying it out 😎

[lelabodemichel]

There is a frequency compensation made by R121 and R122 and two capacitors made by the pcb itself and small square copper pads. These RC networks are in parallel with R16 or R75. They are not used because these resistors are not fitted but it is a nice design.

[splodman]

I have a couple of the Micsig 5kV probes and they have been very good, felt it was a bit of a punt at the time as they were a lot cheaper than others but they have lasted through a few over voltage events and I like the probes.

[abitofabitofabit]

Episode 1414 incidentally featured phenomena related to the square root of 2. Well played.

[bjarkeistruppedersen]

Dave, you missed the perfect opportunity to include the "These go to eleven" scene from Spinal Tap 😉

[SirBunghole]

I will always be a fan of Mr Wu's probe.

[captainjinx]

Glad to see it works well… I wanted to use it for frequency drive output examples so the cmrr and frequency capabilities aren’t that important to me. I bought the 1300 volt version. Great video!

[WacKEDmaN]

"It’s Such A Fine Line Between Stupid, And Uh… Clever"

[hultaelit]

Now that Photonicinduction is back doing videos, maybe he could help with finding just how many kV it would take to kill it? He's a top bloke, one of those who would take you home from the pub to melt a knife in his attic. Really into engineering, destructive testing more specifically.

[TheDefpom]

It wouldn’t cost that much to modify the injection mould to have different input connections, it’s a pretty simple change in that case, a bit of laser welding on one half to fill the existing half shell hole and a couple of round inserts in the other half with a sliding block to pull them out before ejection … my guess would be about $5K to do, along with a minor PCB change to fit 4mm jacks.

[PurityVendetta]

You little beauty Dave... I think my Oz speak is good. I've been looking at the Dp0007 as it's about what I can afford. Great review but I might just hang on now and see if they fix the common mode rejection issue before I put my cash where my mouth is. Thanks again 👍
Oh, ps, I'd have bought your Sapphire probe but I'm guessing the p&p would be a bit of a problem as I'm in the UK 😔

[ovalwingnut]

GooD SHoW. VERY partial to Sapphire/EVB... but I do like to see the utters in action periodically.

[ignispurgatorius]

Still alot of people complaining about the 2 test leads. My guess is that they (at least partially) avoid the shrouded 4 mm banana sockets for safety/compliane reasons. It would essentially just lead to tempting people to plug in their unshrouded banana jacks and asortment of clamps that could easily slip off during probing exposing 700+ volt contacts. By having the leads already attached they kind of prevent that (unless someone goes out of their way to do dumb things). Having 2 leads and HV probes is also probably easier to get through the various CAT specifications than trying to create a "proper" probe that qualifies for 1000V. The Ground will always be akward to use in such cases, so going with 2 probes and the diff. amp. is probably the most practical way here. I know there are some expensive manufacturers that do it nontheless, but I kinda question the use of it. Since these definitely appeal to hobbyists as well, I think this is a rather sensible choice, since their main purpose is probing safely anyway.

[EKUL]

Please do a video on the gigabyte PSU blowing up, you can find information about it from gamers nexus

[HappyLittleDiodes]

Those electrons are a nightmare to pick up if they fall out

[MateuszJagocha]

Give this probe to Photonicinduction guy :D

[joopterwijn]

Looks like the leads are suitable for a bnc replacement!

[RottnRobbie]

I guess I own this as a "it's my problem" thing, but I had to rewind through 6:30 three times before I figured out that "full-ya" (as in 'test it to full-ya') was Strine for "Failure"... !