This is the best explanation of the loZ function of multimeters and ghost voltage I've ever seen! And more. Thank you very much!
@TheTechCircuit
6 күн бұрын
Thank you for the feedback. Feel free to share the video.
@TOYguy-25
8 күн бұрын
👍Thank You! Very well done. Your demo/presentation made this easy to understand.
@TheTechCircuit
6 күн бұрын
Thank you for the nice words. Feel free to share the video.
@AW-nr6ij
5 ай бұрын
Great tutorial on LoZ, it's much clearer to me now.
@TheTechCircuit
5 ай бұрын
Glad it helped.
@John-cz1tr
3 ай бұрын
You made that so easy to understand. I look forward to viewing the rest of your videos thanks
@TheTechCircuit
6 күн бұрын
Thanks! Feel free to share.
@texassparky
2 ай бұрын
Dang!! Thanks man. I'm a Journeyman electrician that typically does commercial. I once got a job to a very old home where the handyman refused to install a fan because with the breaker off we still read 30V on the hot. I was miffed to. I understood that it was "ghost voltage" and not hazardous however I just couldn't explain it properly. Now I fully understand. I have since purchased a Loz meter. Thank you Sir.
@TheTechCircuit
6 күн бұрын
Thanks for the feedback! Feel free to share the video.
@Betruet
11 ай бұрын
This was a very helpful demo, thankyou for taking the time to explain it all so clearly
@TheTechCircuit
11 ай бұрын
Glad it was helpful!
@somethingsomeone5440
11 ай бұрын
Oh that’s what that mode is for. That would have been handy last week. Had line voltage on a wire in a conduit and wasn’t sure if it was energized or just capacitively coupled with another wire
@boundatthewrists
10 ай бұрын
Outstanding video!
@TheTechCircuit
10 ай бұрын
Thanks!
@connorking9
7 ай бұрын
Great video, this helped me a lot as an Apprentice still trying to hone in on the theory side of electrical. Thanks !
@TheTechCircuit
7 ай бұрын
You're welcome!
@AndriiEngineerUA76
11 ай бұрын
Thanks for great explanation!
@TheTechCircuit
11 ай бұрын
You're welcome!
@illmindftww
11 ай бұрын
Damn now I kind of want to buy a fluke 116 but I dont really need it for most of my work. Great explanation!
@TheTechCircuit
11 ай бұрын
Thank you.
@mattc3385
11 ай бұрын
Fluke 115 also has this function. You hold the Range button down when turning on.
@mikeadler434
6 ай бұрын
👍👍
@BobboNaught-YT
9 ай бұрын
Fantastic explanation of all of this! I never heard of a meter with the LoZ functions or thought there was a good way to test for a bad connection like that.
@TheTechCircuit
9 ай бұрын
Thank you for the kind words.
@MrAbrandao
7 ай бұрын
Very well explained!!
@TheTechCircuit
7 ай бұрын
Glad to help.
@gunnerjdw
9 ай бұрын
New appliance tech here. Thanks for the relevant explainer. I'll be on the lookout for weird shit now. 😂
@TheTechCircuit
11 ай бұрын
Lots of questions about why LoZ was in DC mode in some parts of the video. This is normal when the voltage is zero. This meter auto-selects AC or DC. If the voltage is zero, it starts off in DC and switches to AC when it detects AC voltage.
@garrybaker6485
11 ай бұрын
Steve, thanks for this. Always good content. One question… towards the end of the video you mention that, when we apply a DMM to a circuit we are creating a series circuit. Are we not actually in parallel? If we were in series & measuring with the VAC function would we not be dropping all of our voltage across the DMM and therefore interrupting our circuit of interest altogether? Isn’t 5mOhm a functional open?
@TheTechCircuit
11 ай бұрын
Great question. When measuring a voltage, your DMM is in parallel with the voltage source or whatever you are measuring across, but is in effectively in series with the internal resistance of the voltage source. Yes when you are measuring a voltage source, since you are in series with what is ideally an extremely low internal resistance of the source, the voltage divider rule dictates that 99.99% (depending on that internal resistance) of the voltage appears across the meter. So yes,, for all practical purposes, it is open, but highlighting the small effect that the 5M ohm resistance does have on the circuit illustrates the relative difference in how it, vs. the 3K ohm LoZ affects that circuit, and why it is used.
@garyradtke3252
5 ай бұрын
If I understand this LoZ is basically introducing a load into an otherwise open circuit. This is what we do in automotive and other machinery DC low voltage circuits usually with a light bulb of known load to check the integrity of the circuit. Voltage testing of a loaded circuit I guess is what it might be called. Will this LoZ work on DC voltage? It seems like it would be a big help if it does.
@TheTechCircuit
5 ай бұрын
Yes, LoZ mode works with DC voltage on certain multimeters depending on their specs. They basically just effectively introduce the same approximate 3K resistance across the test leads - providing much greater loading than the typical 5 megaohm input resistance.
@SolderBrothers
11 ай бұрын
Very Nice!
@TheTechCircuit
11 ай бұрын
Thanks!
@bobvid7791
6 ай бұрын
AT 8:12 YOU SAY "WE HAVE A BAD OUTLET" - IS IT THAT ONLY THE CONNECTION IS BAD AND THE OUTLET IS GOOD ?
@_Kloudx42_
8 күн бұрын
In the section “compromised voltage”, I could either test the outlet as is in LowZ or test the outlet regular but under a load to see the voltage is not reading 120 as it should?
@TheTechCircuit
17 сағат бұрын
Yes. Either method places a relative low impedance across the source.
@waterfuel
4 ай бұрын
There was a circuit from 2008 on a mower engine that purposely allowed crossover leakage induction volts from a 5 turn wire onto an adjacent 7 turn wire, WITHOUT core, so as the in series volts is increased from 12 to over 100 volts. Was this brilliant, or just a cheap method of increasing a lower voltage. See photo of S1R9A9M9 triple wires assembly electromagnet on internet images. The LOWER only section of 13 turns had steel core. This was in reference to HIS (2) KZitem videos that can still be seen. . (On old, worn out ignition cables, they spark across in the dark at night when you lift the hood on bad ignition cables.) He put this to use for his project in 2008. Please write back so I know you received my message. Is this type called capacitive voltage induction? My first test on this showed a neon bulb glowing with at least 90v, FROM ONLY THE 7 TURNS WIRING, not electrically connected to 5 turns.
@ejonesss
11 ай бұрын
is it ghost voltage that makes led lights glow when they are turned off? current leakage effect is why downed power lines are so dangerous especially in wet conditions such as after a thunderstorm. your house gets 220 witch is split into 2 110 sources but a power line can carry 15000 volts at several thousand amps depending on how many houses are fed from the transformer. i think that leakage current is what gfi breakers, outlets and plugs is detecting when there is a fault. we see compromised voltage sources in cars where the crust has formed on one of the terminals. i imagine a scenario where something is wrong with the car that caused the crust to form on the battery and someone who does not know enough about their car may try to jump it with one of them cheap even disposable jump starters that can dump as much as 24 volts into the battery to charge first may fry the car computer (ecu, ecm or brain boxes ) and total their car. this works because the jump boxes are designed to be used to charge the battery enough to get the car started but the crust causes enough resistance that instead of the battery getting the charge the cars electrical system gets the higher voltage and can destroy the electronics including the cars computers. replacing the electronics can get very expensive possibly costing more than the car thereby you can have a brand new car with a defective alternator that is overcharging and outgassing the battery and a cheap jump starter that connects to the cigarette lighter port will dump up to 24 volts into the car.
@TheTechCircuit
11 ай бұрын
No. That is not caused by a ghost voltage.
@senddrews8225
11 ай бұрын
at 2:00 I see 0 VDC reading. Is the DC scale intentional ???
@TheTechCircuit
11 ай бұрын
It auto selects AC or DC.
@AmigaWolf
11 ай бұрын
Wish you would do this with a multimeter that has no LoZ, what 99,99% of all multimeters are, even my expansive Fluke 179 True-RMS Digital Multimeter does not have a LoZ mode.
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