Miniware DS211 Oscilloscope Review II A bargain at $65!

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[@gregwmanning]

If those power lines were in Aust they would be 3phase Delta (no neutral - if the centre conductor were a neutral it would not need the same insulation), and each insulating element is about 11kv, my guess your line will be 66kv. High power TV transmitting towers also light up floros - magic.

[@ryanmalin]

bet money its 3 phase. Love the channel Schematix!

[@fvckyoutubescensorshipandt2718]

Instead of an led you will prob have better luck with an old 4-8 foot flourescent tube used to light commercial spaces. Ground one and elevate the tube 10-20 feet (closer to the line) and it will glow rather bright even in daylight. Doing so with the 345kV lines that power my city and it's almost as bright as if it were plugged in normally (several dozen watts). That distance from the line makes a huge difference, as most lines are 100-200 feet up (don't want people or animals casually walking under them to get noticably shocked). For adrenaline junkies move a grounded tube within about 20-50 feet of the line (10kV per foot depending on voltage, a ground fault results in an electrical explosion akin to dynamite, something you don't want to even be near, so not too close) and it will glow bright enough to melt with blue corona flying off both ends of it.

[@joemcgarry1106]

Excellent video. You touched on several different interesting subjects. Your parents own a little bit of heaven there.

[@fvckyoutubescensorshipandt2718]

8:20 Are you sure? Here in the USA 3 lines are 3 equal phases 120 degress out of phase with each other, with sometimes 2 grounded shield wires above those (to protect from direct lightning strikes). 2 actives and a neutral here really are only used on former AC lines converted to DC for power capacity upgrades (ie 500kVAC 3p to +800kV, neutral, -800kV DC).

[@Schematix]

It's fair to say I can't be 100% certain on the specifics of this set of powerlines without more testing. I find it weird that this set of powerlines are not listed on any of the local grid map I've found online. When I held my meters leads upto the lines, the center line gave very low readings compared to both outside lines. I assume the center line is referenced to earth? Maybe if I had a 3 channel scope & run 3 wires parallel to the powerlines, I'd be able to gain a better understanding of how these particular powerlines work.

[@fvckyoutubescensorshipandt2718]

@@Schematix First guess is the center phase's e-field is being partially canceled by the outer 2 phases.

[@jonnyphenomenon]

I've had a dso nano for like 20 years now. It's still running strong! Doesn't look like they've changed it much. Tho the addition of the 10x probe is nice.

[@sortofsmarter]

Nice and simple review....Congratulations on getting to 100K subs...I've been watching you sense your "rewind a MOV transformer"..

[@_ElectraAhmedShahriarSamad]

I really learned some new things from this vid.... Thanks a lot 👍

[@SouravTechLabs]

You could have used a capacitor instead of the LED, and then a diac (like DB3) from one leg of the capacitor to the LED, and other leg of the led to the other side of the capacitor with correct polarity. When the capacitor charges up to 30+ volts, the diac will reach breakdown and will conduct until a certain voltage (something like 10 - 15). Because the capacitor stores voltage and can give you higher current, In this way, you could pulsate the LED lights at such low power.

[@thomaslawry5238]

Three phase transmission lines do not incorporate a neutral.. That is L1,L2,L3. In Canada the city side of the three phase on pylons is about 230kV. Across country from the hydro dams, they use in excess of 600kV. The height of the pylons is dictated by the safe working distance plus a safety factor for vehicles and persons passing underneath. The three phase on street side power poles in about 25kV... But then we have an Edison based commercial and domestic "single phase" 120Vac system which really is a two phased system with a centre tap which is grounded to form a neutral, for stoves/ovens clothing dryers and HVAC etc. NZ has a far better system!

[@youtubeaccount931]

Have you played around with the TinySA or clones? Love the power capture experiment

[@WaschyNumber1]

A shame that's not with usb c port, I don't buy stuff anymore with other usb ports, like mini or micro.

[@jamess1787]

I was once told to calculate the voltage of a transmission/distribution line: multiply the number of isolatoring disks by 7,000. Should be around 50kV or so. (I can't remember the technical name of the isolators 🤦)

[@fvckyoutubescensorshipandt2718]

that's just a rule of thumb, dirty industrial area or near salty ocean or alot of fog/rain affects that a lot. A single disk can be rated anywhere from 7.2 to 23kV, depending on environment and diameter of the disk. 15kV is a good first guestimate. Looks like a rural area without much pollution so prob 110kV between phases being in New Zealand. North America same environment maybe 115kV. If one has coconuts for balls and a 1000:1 potential transformer (meant to step transmission voltage directly down to around 120v for substation instrumentation like control relays and monitoring), some wire, a hot stick that can reach a line from the ground (or dry fishing line and a rock can get it up there too) and a DMM you can just measure it (take the phase to ground voltage and multiply by 1,732).

[@jamess1787]

@@fvckyoutubescensorshipandt2718 beautiful, sounds like you're my kind of brew. 🍻. Thanks for the insight! All makes sense since air capacitance and conductance changes like any other material. Bobs Decline? Check him out, he's a little on the softy-side, but a good watch for lineman/utility stuff. He did a video on some similar transformer stepdown from transmission to 15kV using a residential pole mounted transformer, then another one on the other side to further step down the 15kV to household electric (something like that).

[@mastermoarman]

Why not hook it up to the fence that's running parrell with the power line?

[@damexoid]

can you take a look inside oscilloscope? i wonder how bad it would be to open/service it

[@noelandrew3600]

i did predict this mate. and gee i would have fun with those transmission lines, they will be 150kv lines and all three are live phases of the three phase system, the earth is the negative. fun thing is to use a drone to place a U shaped cold cathode tube from an old tv over the line, it glows brightly, the local power board better not read this..........

[@eugene-bright]

I'm using FNIRSI-5012H. I'd like to find pocket oscillograph with SD card support...

[@electronic7979]

Nice product

[@dz-abouttechnique1849]

Very nice video!

[@weazeldark3983]

Those power lines don't have a netrual its just 3 phase Neutral comes from a delta to star change in transformer

[@korishan]

Maybe you could take a ferrous rod and wrap the wire around the rod. Perhaps the magnetic field will be stronger and induce a higher voltage and/or current. Also, perhaps put the wire up about 2 meters instead of waist height.

[@محمدسكري-ث1ش]

How are you? Can I ask you for help in adjusting the nutrition of the Huawei R4850 G2

[@FixTronics]

I can recharge my phone under those power transmission lines

[@AntonioClaudioMichael]

This is super Cheap Price compared to The few Name Brand Models in the World for the Mini

[@Mr2Xri]

Very nice video! Could you try to run a cable under the power lines in spiral form like an inductor in order to gain much voltage to illuminate the LED?

[@rokiedecentra9656]

why didnt you use a half wave recitifier with Schottky diodes, also you coulf try charging a capacitor instead

[@diylithiumguy]

Because full bridge is better with more power.

[@AntonioClaudioMichael]

That view of the property is just gorgeous just stunning wow 👌 so beautiful @Schematix

[@barjabike]

You have to make a coil under the grid to convert magnetic field into current.

[@diylithiumguy]

No he doesn't.

[@jerrywiniarski1176]

Great video....cool o scope..and keep testing out your ideas ,safely, of course. Thx for some fun..🏃😳😲😄😺🕵😎

[@fvckyoutubescensorshipandt2718]

only 200kHz bandwidth, so not very accurate above audio frequencies (ie not good for SSTC or induction heater work if you are looking for cheap scopes that are not a financial disaster if you accidentally blow it up).

[@MassimoTava]

6 ceramic discs = 600Kv?

[@diylithiumguy]

Not even close

[@gordselectronicshobby3853]

Why did you use a full wave bridge? The led is a diode that will rectify the AC anyway. The bridge will drop the voltage from 400 to 700mv. Did you realize that?

[@donbenjamin3]

Definitely a 3-phase transmission line.

[@alexstone691]

Wait wait they literally used the case from a music player xD Look at the buttons fast forward and play/pause

[@gowdsake7103]

I got a build it yourself one for I think 15 pounds but not that one

[@RixtronixLAB]

Nice video clip, keep it up, thank you for sharing it :)

[@gabo8993]

Regálame uno de esos por favor 👍

Miniware made a few nice products - logic analyzer (custom metal enclosure, great hardware inside), modular power supply with switching ->linear architecture or soldering iron. But this one looks just bad. Old media player case and outdated hardware. Better buy OWON HDS series 3 in 1.

[@alexstone691]

Now if i only had money to buy it

[@KevinDC5]

Hell Yea! MurryChristmas to me!

[@pfoxhound]

1 channel.

[@mrlithium69]

free wireless power !

[@robdewhirst7525]

Micro USB port BOOOO!

[@Fraud59-v5r]

First

[@ardhi1269]

Damm you are fast

[@Kai33331]

you also like authoritarianism

[@hemantbabel4279]

One channel dso is useless in most cases

[@gregclare]

But, not surprisingly, a one channel scope is more useful than none. Were you expecting dual channel for $65?

[@maron4]

I dont like it