Review of a Micsig DP10013 HV Differential Probe

[@h7qvi]

When reviewing these probes, connect both input leads together and connect to 240V to measure the CMRR. My well known budget one had bad CMRR until i pulled it apart and adjusted the *very* sensitive and touchy single turn CMRR pot. Mine was the type that uses resistor dividers between the live inputs and ground, which demands close tolerances and trimming to get good CMRR. Another design could use a floating power supply and amplifiers, which would avoid the touchy CMRR adjustment problem. Good CMRR is needed for measuring things like SCR gate-cathode waveforms.

[@womblenz8698]

If you twist the flying leads around each other as much as you are able you may be able to reduce the stray capacitive effects.

[@mrkattm]

You always do a very nice job, you are among best, if not the very best, you tubers who does this type of content. I earned my BSEE from an ABET accredited university back in 92 and it was hard work, I can only imagine how much easier it would have been if I had You Tube and the internet. Students today really have no idea how good they have it, I am sure the folks from the slide rule days though the same regarding my class. Any how, thanks for what you do and keep up the good work.

[@digitalradiohacker]

Yeah, but you probably did essays on engineering topics, and sat engineering classes. Now, we write "business management" and "equity in the workplace" essays, and sit in classes that teach stress and strain in beams, and pressure in vessels whilst on EE courses. I would have done ANYTHING to have done engineering 30 or 40 years ago.

[@mrkattm]

@@digitalradiohacker At an ABET accredited university in the states ALL engineering disciplines have to take Statics, Dynamics, Strength of Materials, and Thermodynamics (plus others) and a thematic study outside of engineering up to a 300 level. I did my in Greek philosophy. It was rough.

[@kungfumaster8171]

Got my bsee back in 1990. I would have to agree with you, i would have killed for youtube back then. All we had was awesome text books (which i still have and understand better today) and the experience of the professor. I was lucky to have some really great ones (others not so much).

[@digitalradiohacker]

@@mrkattm My point was that you probably studied engineering, rather than hard-left propoganda and whatever else they decide to try to fill the course. When I buy nappies from the shop, they supply me with nappies. If they attempt to supply toilet roll, I shop elsewhere. I didn't ask them what I need, so they don't get to tell me. They also don't decide where I spend my money. If I offer to exchange money for information on electronics, I should be provided with information on electronics. If they provide information on thermodynamics, we have a word to describe what they did - Fraud. By all means, as salesmen (which is what these institutiuons consist of), they should try to "upsell" other courses, but they certainly shouldn't piss on my leg and tell me its raining.

[@MAYDAYDEEJAY]

I stripped one apart. There's 5 screws if I remember correctly, under the front sticker :)

[@leonerduk]

Front sticker? How sneaky of them. Almost as if they're deliberately trying to make it difficult. I always dislike that sort of thing :/

[@kungfumaster8171]

Nice review. Thank you Mr. Wong

[@TheDigitalAura]

I've had one of these for a few years now, fantastic probe. Dave Jones tears down the 10x 100x version, I'm assuming they're very similar inside.

[@jstro-hobbytech]

I have the rigol mso5354 Kerry and I'm building an amplifier and will need to take all sorts of measurements for a buddy who owns a smaller channel. Plus I can get them cheap. Would you buy it to adds to your gear. My engineering discipline isn't ee but I'm a huge hobbyist.

[@SaeligCoInc]

Great diff probe!

[@puffinjuice]

I would love to see the inside to see how it works 😀

[@leonerduk]

A different use-case perhaps, but I've often wanted a low-voltage differential probe... Something that can see the orders-of-milivolts voltage drop along long PCB traces, wires, that kind of thing. Would make a handy way to observe current consumption as well. I'd definitely want it in the >1MHz bandwidth still. Are you aware of anything fitting that kind of use?

[@eugenekilachkoff3305]

They do exists, although they cost a ton of money. E.g. both Tek and Agilent make such probes. For a DIY approach you may want to consider AD8129 based designs; there is a couple of circuits published here and there.Depending on how you configure an amplifier, this will give you around 100MHz bandwidth with 1x differential gain across several tens of volts of common mode voltage. Hope this helps.

[@Brian_Of_Melbourne]

kzbin.info/www/bejne/npW5hmyMjrp2iKc

[@alickkk]

8:26 - индуктивность! ... 8:35 - берешь тупой конец отвертки и проводишь с усилием по сварному соединению корпуса несколько раз - должно трещать - это ломается клеевое соединение ... и так по всему периметру корпуса ...

[@jstro-hobbytech]

I'm counting on your word here Kerry of whether or not to buy it. I can get it for less than half price hehehe

[@jstro-hobbytech]

Add the thank you button brother

[@zyghom]

I had it, I used it, I sold it ;-)

[@blackarrow8683]

May I ask: Why sold it? ;-)

[@zyghom]

@@blackarrow8683 no use in my projects