It is a normal property of measuring in physics. Every measurement is applying some inaccuracies in measured system. Only some of that can be omitted (let's say optical measurement of a pebble position, photons will not affect that position in any serious way), and some can be a problem (the same situation, but measuring a particle position - energy of the photon is comparable to a measured object and have to be accounted for). Another fun property is accuracy. You always have to account for that, even if you are using a ruler or a tape 😊That's why surveying and making measurements is so interesting, difficult and huge subject in physics and engineering.

Please let me know the type of oil for refill and where I can get bladder for oil thanks

I always keep a cache of the SN74AHC1G series (e.g. 00, 02, 04, 08, 14, 32, 86, 125, usually in DBVR / DCKR pkg's), they come in handy when a quick bodge job is required…

I suspect by the time you fix it properly it might have been worth buying something better. The real problem with the cheap box is the copper contact and the wiper system which I suspect after a bit of use will cause issues. Even if you plated the board or had a new gold plated one made the wiper is still an issue. Spark fun has a decade board kit with quality switches for about $67 au, just add box and knobs. Eisco makes a complete unit for about $170, but only goes to 11,111 ohms. Another option is to look for a vintage box.

I started to see more and more alkaline AA, AAA batteries of several brands leak. I am now using mostly Energizer ultimate lithium batteries. They are more expensive, but I've never seen one leak, and they last much longer than alkaline batteries, and they are the same 1.5 volts.

Free energy is nearly impossible unless high frequency open wireless non linear power systems are used along with negative resistance & tunnel diodes :) an unlimited amount of wireless leds can be lit up from a properly built 1 watt tesla coil.

I searched for this vid after seeing the ad featuring a british army guy of 10 years service with a stars and stripes badge on his shoulder, even the ad is a poorly produced scam!

In other words . If you work ion electrons are in the electrical industry but a Fluke . If you’re a hobbyist you can buy something else. I use a Fluke 87v 5

i dont know how to understand ICs working principle what if i gave + and - to ic and its on so there may be out put and how to check that ics was okay😢

I have Tested with Timer, and it works fantastic. The Timer just have to be connected to the green poles AR and AN or BR and N. And it work with the Time you want. :)

sadly lost my Fluke clampmeter on my job somewere and never seen again, i still missing it a lot, messurments are so much more trustly, few cheaper brands have trouble showing up ghostly numbers on display specially the 'zero' function for the clamp not works that good as a Fluke.

It's made by UFOs. Stolen alien tech. Roswell.

I’ve been using 600 f to solder with good results. But every solder station is different . Another station may require a different setting to do the same job.

Victron Multiplus II can also handle grid tied inverters and control there power by changing "grid" frequency so they can be converted to off grid.

Found for 3 bucks plus 2 shipping on aliexpress

Sneak attack screws designed to break the item you are trying to fix. Easiest way is a blow dryer and it will pop right off. Its double stick tape. Another option is a couple of drops of charcoal lighter fluid put in the seam. Then wait a few hours and it pops right off. I stuffed a board from a cheap power bank to charge the battery up and put a higher capacity 18560 in it. The charge management on these is horrible btw.

The thing I don't like on the digital scopes is the slow refresh time & resolution of the display.

Very good useful video I just ordered one of these (Jotta Brand same thing off Ebay) Thank you! cant beat the price of these $35.26. Of course I am sure they are not UL rated, but reviews are all good.

Where can I get this device now, and what's the price range?

Is t the electric field outside the unconnected battery negligible small compared to inside (lile inside a capacitor. EM-waves in cable do not propagate at the speed of light, depending on the cable 0.6-0,9 c. The E field of the battery causes surface charges in the cable (by moving electrons to the surface) and these cause another smaller e-field which then make the electrons inside move? Why? Why the first e-field moves electrons only to the surface, and only them then make the inner one move?

I'm currently trying to get into a Kaiweets KTI-W01 thermal camera, and your struggles in getting into your Flir TG165 is about exactly the same as I'm going through right now with mine. ;s Bought it brand new from Aliexpress. It arrived today. And there's a big speck of dust or something, on the screen. Can't be wiped off, because it's on the inside of the screen. Driving me nuts!

The 4052 may not be differential, BUT BUT BUT, the address selection is COMMON as if they are pairs! ...sorry Dave :)

too bad it doesn't have an HDMI out... Rigol FTW on that one

Old scam from the 70s.

A true K.I.S.S. instrument. Less can be more…

Negative PULLED QURENT TO JRQN..PUSHED VOLTSTAGES JLQY

GS8743 - take a look at the cheap 5nS comp. at LCSC! :)

If you wish to measure mA you need to select mA on instrument sir, not Amps.

Now there are: 152 backers for 1x, 70 backers for 2x, 130 backers for 5x, 21 backers to 10x,, 46 backers to 20x, 3 backers for 60x, 10 backers for 100x and 6 backers for 200x

aha there is a difference in 1 meter

The baby Hioki's are much better the DT4224 in particular it is true RMS and even has auto hold, a bargraph, backlight, filter.

I have a fluke 189 ii and one day I tuen it on and the screen was flickering. I use my hot air and heated the board and now it works again. What could have caused that?

Dave... I got Something much more wanky and fancy for you:😅 ukposts.info/have/v-deo/i5eEa3iRgIGmpYU.htmlsi=Px6dPK71hbxX8SIB

3:50 SORRY But ALL These New Texurized plastics And That Handle SUCK EVERYTHING used to be BABY BUTT Somooth And Soft And Smooth That's THE STANDARD REASON EVERYTHING Is Rough THESE Days Is BECAUSE THEY don't want to spend money sanding SO NO ROUGH HANDLE IS A JOKE

You ever notice it's only the "college indoctrinated" over the last 30 years that believe the moon landings were a hoax. Those same people are crying about major minimum wage hikes killing their burger flipping jobs. Yeah that college education paid off real well huh!

this could be solved by regulation. as in a law saying how much power one of these smoke detectors are allowed to waste.

Thank you!!! writing here from Argentina. Now I'm safe to make my electronic measurements! I had the same doubts about the osciloscope and you clarified them! Your diagrams were so explicative.

No ya didnt break anything, thats where the molding sprue from the injection molding machine is located - where it injects the plastic, it has to be cut or broken off after being removed from the molding machine - I ran plastic injection molding machines for 15 years, broke/cut off (a lot) of sprues in that 15 years.

I like it a little bit. We probably get some in 2085 all over the place.

I have worked in the southern California power plant industry for over 32 years and also food industry. We we're only allowed to use Fluke multimeters from day one! Tony from Bakersfield, CA

Ew, hate bistable relays in multimeters! If you accidentally bring it close to a magnet, it can switch and cause anything from an incorrect reading to your meter blowing up.

I paid £20GBP for a Kaiweets meter and it works great. Much more accurate than other cheap meters.

Hard to find some 7400 series chips now days.

The USB output regulator might be an SCT2420 buck converter, just a regular China made wide-input voltage synchronous buck converter.

Anyone have an older 2 channel 8bit you would give me?

They seem to be 57 cents now on Aliexpress. Inflation?

The leaded ceramic cap has X7R dielectric, in a filter circuit i found a film cap (of same value but much larger in size) to be twice as effective. It showed me how the properties of cap can also make a difference. Why exactly, i’m not sure tho.

This product has been rebranded as Optrimo now, and they are using an AI Jeremy Clarkson voice for the advertisement. 100% a scam and there is no way to "unlock" double the gas mileage from your vehicle.