Chinese Power Saver - Does it actually save power?
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- Опубликовано: 27 авг 2016
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Twitter: / greatscottlab
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In this video I will have a look at two chinese power saver devices, explain how they work and why those might not be a good option to save power. Along the way I will talk about reactive power and distortion reactive power.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com) 
Наука
I guess these are about like all of the expensive products that claim to increase your car's gas mileage, but really don't.
Woa, 8-bit guy here:P
Never expected you here :O
I didn't expect to see you here. Hi!
love ur vids btw :)
What are you doing here ? :D BTW: you have an amazing videos and GreatScott too
IIRC, the trick with the car's gas milage is the same as explained here.
What i've been seeing a lot lately is people recomending replace all the bulbs on the car with LED's more correctly "plasma" LED's to increase mileage, but i think is a joke just as the nitrogen filled tires.
Love your videos, im looking for a G5 to build a sleeper monster.
Cheers.
These devices actually have the capability to reduce your power consumption by a great factor. You're gonna need a lot of them for this though. You need to connect them to all the outlets in your house. This works because you no longer have any outlets to plug your power hungry devices in anymore.
lol
Ice Flake, good advice. You hit it on the head.
lmao 😂😂😂 good one
wahahahah trolling urself to consume less haha
great idea ahhah
You could save even more money by buying a pack of plastic child safety plugs. Use those instead.
4:36 - That breaker box is beautifully organized. Makes American electrician's wiring look like Thailand workers.
and if you thought america brakers are bad you havent seen bulgarian or atleast mine.Since i wanted to change it from old fuse type witha quartz sand and thin wire inside very old time mainly used in USSR and when we opened it jezus christ.It was just a hole in the wall full of 100 types of dead bugs and unreasonably thick wires.The water heater wires were 10mm2 solid copper wire.imagine if you give solid wire to 2 year old kid and let it play whole day.thats what it looked like
thechosendude *Welp, here in Australia thats how ours are.*
Heh... Working with a home inspector, we went to check the breaker box... Air conditioner and furnace were double lugged... To the mains. We both just stared.
My breaker in the UK looks just like his
What's the problem with Thailand workers?, you racist.
I’ve seen Big Clive talk about this so much, but it’s really nice to see the practical examples on your scope. It helps to understand exactly what’s happening.
Love how you literally picked everything apart and showed us what happened! Great vid man :)
You got a nice anodized aluminium case for a future project :)
...And three huge capacitors.
I gotta say, depending on price the extruded one might be worth it for other projects.
I just checed and it costs aboat $10 US so I would say just for the case its wort it.
yep. They are 5uf, very small
hey its a good heatsink
Thank God i found this great explanation, my mom wants me to buy one of these crappy devices for her. I will show her this video. Great work.
You should make a series called Bullshit or Not and look at things like this
I agree
Hehehe
THE RECTIFIER
Ksssksssskssss (kitty cat vid)
JUST LIKE MOST THINGS ON THE INTERNET AND LIFE IN GENERAL ALL ROYAL BS
VERY impressive! I think we all knew the outcome beforehand, but your analytical methods are really impressive and fun to watch! :)
Thanks mate ;-)
due to my high school level understanding if circuits i had about 1% understanding of what he was saying but it sounded cool so i kept watching
basically moving the curve using capacitors or inductance you can trick your electricity meter that will read consumption of current badly. Mean that if you use e.g. 900W it will read only e.g. 750W cause of moved curve.
ya basically in high school they teach you how to light up a light bulb. i knew how to make inverters since i was like 12
+Marek S so this is for tricking the power company to fool the meter?
Marketing these days ... you can sell ice to Eskimos .
Bartosz Olszewski How putting capacitors for sale as "Power Saver" is not marketing
*Ignorant people these days...
Australia is selling sand to Saudi Arabia.
The ice is disappearing... buy now because prices are going to go through the roof.
+polarknight 537 make sense for land reclamation in beach. its basically like selling a tiny bit of Australia. but then again the wind and water scrape lots more through erotion. sry for any bad grammar, not a native speaker.
I really had my doubts on this gadgets. Thank you for the logical explanations
Good explanation, where I worked we had good size coolers for produce, meat, cheese, etc. We replaced the old ammonia system with 2 new freon systems, which were supposed to save a lot of money. Turned out it about doubled the electric cost. The electricians decided it was feeding back too much unused power back, since the new systems weren't working as hard as the older bigger ammonia compressor. They decided to install a big capacitor box like the small ones to cut down the bills, we had 3 phase with a demand meter. It did make a huge difference. Sorry I couldn't describe it better.
Right my immediate thought is that these new smart meters read a current transformation or something like this with a high impedance electronics component or something that samples everything and is probably overly-sensitive to transients , which would artificially increase the RMS level were it calculated from this high-impedance source. So reducing noise could lower the overshoot error of the meter, simply by filtering transients better. Wheras an older meter would be less effected by transients, though computers probably produce tons of little switching transients which could lead to overshoot on the meter read. Idk. My bill definitely went up 20-25% once we got a smart meter, which actually makes me pretty mad now that I'm thinking about it.
The way you ripped the booklet apart at the end was sooo satisfying ;)
Awesome video. I'm a civil engineer, and based only on the limited electrical engineering courses I had in my first 2 years, I could easily follow your video.
Hey Scott; i just watched your video about power savers and loved it - its not my field but you made it easy to understand that we can understand...:)
My passion is alternative energy - solar, wind and hydraulic, and I would love to learn from you few simple projects to share with my kids. Best tutorial ever, because we can see you know!
Great example! Thanks for going into the device and giving a detailed description and exposing the truth about the electrical junk people try to sell on the internet! I appreciate what you did.
Loved the ending 🤣
Thank you so so much for saving me money and explaining how this works.
Thank you man.. I just seen an ad about those “power saving” devices and knew it was too good to be true so I RUclipsd it and watched your video for confirmation. You went above and beyond and gave great explanation with detail. I’m an electrical apprentice and it just shows me I have a lot more to go to be where you’re at. So thanks for clearing that up and good luck with your channel, I wish you much success!
This video actually attracts power saver ads. In fact the exact ad I saw somewhere else and for a laugh searched debunk vids on YT for! :D
Superbly explained! I like the way you have clearly explain the definition of these devices and also that it is imperative to forget about these Chinese appliances
omg, I was gona buy this, put something told me not too. Then this morning I watched your video. I am very impressed and subscribed (i usually don't get impressed or subscribed)!!! Love your wisdom and thank you so much for helping us understand. You make it so enjoyable ....can't wait to hear your other videos. Yay!!!
Very good video about this devices !! Keep up the good work ! Actually this method using capacitors parallel (power factor correction) to inductive loads is being used in big factories who they have large amounts of inductive loads like motors, since the power companies monitor also the current being drawn from the power lines.
For anyone curious, there is an actual industrial application to these things. As Scott said in the video, motors and capacitors create opposing shifts, the shift itself being called a "power factor" (a ratio of how much of your power is real). It's usually considered impractical and not bothered with to have residential customers billed for their power factor, but industrial customers often have a heavily skewed power factor without effort to fix this as their power consumption is heavily biased towards the inductive side due to (somewhat obviously) motors. As a result, factories bring people in to improve their power factor which does amount to adding some amount of capacitance. There's a bit about this in the wikipedia article on power factor. The idea that this would help a residential customer is pretty ridiculous, and there's a definite amount of cringe related to seeing a cheaply made metal box with no grounding they expect you to plug into your mains voltage.
Huh...but if im running a big CNC with a high power spindle, spindle controller, and stepper motors and such it might actually benefit yah?
@@NeoIsrafil No, residents aren't charged on reactive power. The cap will essentially turn active power into reactive power, costing you more.
In *industry*, they charge for both active and reactive and they charge you more for poor power factor. It works out cheaper to use the capacitors (with a controller to switch extras in and out) because you aren't penalised for poor power factor and you reduce your reactive power.
Buyer beware ...SCAM.
First of all. I had one of your videos suggested to me back in early 2014. Some weeks ago other of your videos start showing up on my RUclips feed, then I gave it a chance and then I found that I had already in this channel.
Well... I have only one thing to say to you: You have talent! Your videos are entertaining, teachful and succinct. I don't have english as my first language and it's very easy to understand you. Unfortunately I don't have how to support you right now, but I hope you keep growing.
Creers bud :)
The most clear and dead clear video I saw about this subject, thanks buddy for sharing!
Awesome, clearly presented and excellent! Thank you for explaining why this is a scam in such a well-documented manner! May the force be with you! :)
Very well produced and this made the explanation very clear.
I've always thought there was no way these things could work unless they were somehow tunable to match the reactance of the load on them.
Thanks for studying these so that I don't have to.
Regards
amazing video as always your analytical depth is just great
What I really like about your videos is that even a 4 year old video still feels fresh and relevant today. A lot of videos on other RUclipsr don't age well and are almost cringe worthy.
Great video! Dave from EEVBlog did a video on this same product, but I think you explained how it works better ;)
D*mn! That fuse box looks so clean! (._.)
Yeah.... *Calls a Friend a and Cleans his Fuse box*
Missspellings at Cmon@f*ck.this
Bylga they all look like that after you put your foot into it and get all the twisted spider web Birdsnest cluster fuck of wires push back inlmao
It could have been wiped with z-energia!!!!! @greatscott. You need to watch the video about this on EEVblog😁😁😁😁😁😁
I watched that video from Dave and was like: I dont want to live on this planet any more with such crap being marketed.
Did you just censor "damn"?
I now check anything and all items I find online. This was great. Didn't understand a thing you said. But when you changed the country to China and tore up the pamphlet, your review was clear as day, saved me money right there. Thank you
Great Video! I would love to see more like these! Taking some random trending cheap object, and see how it works, if it really do what it's supposed to do, and learn a bit more about electrctronics!
I will try to do so
Great video ! I wonder why do they add something inside the box... This system can only decrease the reactive current if the user is running a very specific motor... In any other situation, this system increases the reactive power (especially when noting is plugged...) so, clearly, it is both bad for user and power grid !
If I was one the "engineers" who created this device, I would have just put a piece of iron in it to make weight ;-)
Some old Chinese energy meters are not properly designed back in the 80s/90s, and they will spin backward under pure capacitive load. Those energy savers don't actually save energy, they steal energy by hacking old meters.
Ch Faizan that is 100% bullshit
Okowatt? It's useless!
@@kelsonmcnamee715 in
Don't understand any of it but thank you for taking the time to explain it so thoroughly and clearly
Possibly the most beautiful video I have seen in years, even down to the wagos, awesome dude, totally awesome.
WOW!!! What a wonderful explanation!!! Thanks
that last part made me laugh so hard. " Let's change Germany to China " HAHAHAHA too good
I worked in the electric utility business for 36 years. My recommendation to people that wanted to lower their bill was to turn shit off. When you really think about it, electricity is cheap considering what all we can do with it. I enjoyed the video. Thanks.
I find this video is very informative. Thank you very much for debunking these devices, sir.
Just want to thank you for all the hard work and explanation thumbs up. ( I subscribe)
so lets change Germany to China.... 😂
Raptor Swire I
That's my favourite part in this video 😁😁😁😁😂😂😂😂😂😂😂🤣🤣🤣🤣🤣🤣🤣🤣
You are humorous, thanks for the very useful video!
I rather buy china
remove this nonsense
Thanks for the heads-up! I've been seeing these things on the web and thought they were too good to be true. Thanks for the proof!
Excellent video....loved the visuals...Thank you very much!!
Scott you are great. nice explanation
It's good that someone understand and explain these things to simple person like me .
Thanks a lot bro . Peace
They traditionally worked, though not now. I'm from China and I can recall when I was a kid, those capacitor things worked with older electricity meters. Older meters are not designed to take capacitive loads, and in some occasions, they will spin backwards under pure capacitive loads (no other appliances on, only that capacitor). In other words, those capacitors don't save power, they steal power by hacking old energy meters.
...but you still sell them to get money for your army.
This is kinda what i figures was happening. So it won't trick the newer power meters?
New power meters are digital.. this stuff is useless
i am using this kind saver i does save money like under 20%
@@crazymedia2102 you must use a lot of power tools then...
Fantastic! really interesting stuff GreatScott! I think a power triangle showing the relationship between real, reactive and apparent may have been helpful for some of the viewers less acquainted with these concepts. Take care!
Thank you for this video!
I do alot of dealing with manufacturers in china and can say with confidence that they will do anything to make a sale, whether or not its out right lying or bait and switching. Ive caught out on many occasions shipping being ramped up so they take the profits (found this out when they were forced to admit when i offered my own courier to pick it up), do not trust anything you see from chinese exporters unless you are 100% certain.
Forgot to mention, they also hire employees to give false reviews, you'll be surprised the kind of shit these bastards get upto when you ask the right questions :P
oh god i remembered one case where they sell fake external harddrive, seems legit judged from the case, but when you pry open these things, found only a flash drive connected to the usb port, and some really big bolts for additional weight.
Lol! Extended warrenty: x4 more bolts
True. If you do business with China you absolutely need someone at your side who knows the culture, knows how to approach people, know all the typical scams, ideally a Chinese born person living in your country, knowing both worlds. Cause there are very good Chinese products, they're just not the cheapest ones, and sometimes harder to find.
+Chun ye cheapest sell better
Thank your your evaluation and explanation base on electronic theory. Your are genius
Very informative appreciate your knowledge thank you
Great video GreatScott!! Love your videos!
at least you obtained a nice aluminium case for a future project :)
I was always curious about that so called "power saver"
that do they really save power😵
And yes they are Bullshit
thanks greatscott 😀
Beautifully designed and explained .....Thanks
Great Scott you are a very smart man!! Thanks for explaining all this and giving us the facts!
How to save power and reduce your energy bill? Buy more efficient appliances.
best of message !!!
And also consider the cost of buying them before throwing the old one. Since in most cases, the wattage saved is not enough to justify the cost of a new appliance. Yes, in case the old one just craps out, its a good time to look for better and efficient one.
How to save on power - consume less!!
Duct tape the cracks along your windows and door frames that have too large a gap between them to minimize a cold draft from flowing through. It cut my gas bill nearly in half for this month compared to last month. Of course much of that was reduced due to slightly warmer weather over the course of time since last month. But, it still helped, imo.
Or upgrade all the wiring with super thick shielding
"saving electricity means saving money, saving money means earning money"
-chinese strategy to bait customer XD
Very good summary!
Awesome videos man, learning a lot from your videos
Awesome Man!
I was hoping for some answers to why people think this saves money but I have to find a seller that can explain why they think it does. I don't want to know the fact, because I know them, I want to know the snake oil story.
Awesome Video Dude. Really Cool One. Keep up the great work. Nick.
Congrats on 1 million subscribers!
At least you now have a metal project box ...
"Lets change germany to china" lolol i was laughing so hard
Thank you very much for explaining it so simple!
Thank you for this great informative video. Have been wondering about this power saver boxes for a long long time and I’ve actual bought a few... These tiny box scams is still ongoing until today... sad...
Well, this device CAN actually save power under the right circumstances.
Let us for once imagine the power meter in the consumer unit.
Say you have a 40m Cu 2,5mm^2 supply cable. The load is 4500VA with an inductive cosphi of 0.7, and the voltage by the load is 240V.
Now; S=3500VA, P=2450W, Q=2500VAr
The current is 2450W/240V*0.7 = 14.6A. We’ll use 0.00750ohms/m for the cable.
14.6A*0.00750*40m*2 = 8.8W (real power) dissipated in heat in the inductors.
In this case the power meter reads 2458.8W.
We insert the “power saver” near the load, and assign it the value of 20uF.
In Norway we have 50Hz, therefore Xc = 159ohm. The capacitive reactive power of the “power saver” is 240^2/159=361.8VAr.
We now get a Q = 2500 - 361.8 = 2138.2VAr, and thereby a S = 3252VA, cosphi = 0.75
The current is now 2450/240*0.75 = 13.6A, (real) power dissipated in heat = 8.16W.
The power meter now reads 2458.2W.
Well, point proven; 2458.8W > 2458.2W, so in this case it saves a tiny bit of energy over time.
This was written to you who say the product cannot save power at all, because it CAN, but it is still a shitty product made to screw people, i can agree on that.
CirkaTusen But you will have less heat and current, which means things like motors will heat less and have longer lifespan, but since you probably dont have 3kw industrial motor in your living room, this wont do much
whao, i love your deluxe image..... ' cool!
No it won't save anything on the bill even though it might save on power waste. Consumer electric accounts don't charge based upon reactive watts, they charge by actual consumed watts. This means only industrial customers would save money doing something like this because it takes large motors to make large reactive watt. The Power Factor does not affect regular consumer power bills. Only industrial / commercial for the most part.
@4:36 is that breaker box normal in germany? for fucks sake, my box looks like a nuclear reactor control board from 1940
Yes, it is normal.
In austia too
Most of Europe dare I say. Malta too
Yeah, mostly in all western Europe countries as far as I know. I'm from Spain and they look like that... my house is 30 years old and my parents 50. Lived in UK for a while too, in a "modern" house and in a "Victorian" one, and they look the same. So... yes, I'll bet it is "normal".
That comparison xD
Your test is awesome man!
A great informative video, thank you for posting.
That was the best explanation of what Power Factor is, and also why it doesn't mean anything for domestic power meters.
I learnt something :-)
Is there anything that scope CAN'T do ? :)))
Thank for sharing this.
Really great.....as an electrical engineer and electronics hobbyist I like your videos a lot.
so wy there are so many substations using Capacitors banks?
You notice online, when anyone asks, “do these really work”? The question is totally avoided?! SCAM!
Thank you. I bought 2 last night. It says 100% money back guaranteed. I'm sending back without even opening it
Saw on tiktok plan to buy, i like videp like this when a real expert reveal the truth. Thank you so much sir!
Been waiting for someone to take a look at this
Hey Scott... a video about 555 please you can add it in Basics series
It is already on my to do list.
I think you have mentioned the IC 555 in your PWM video but such an important IC deserves it's own video.
+Rajat Tarade or its own channel
I think you should do the common schematic
pin 8-pin4
pin2-pin6
pin1 ground
pin8 Vcc
a capacitor between pin 1 and pin 2
a resistor (680ohm works fine) between pin8 and pin7
a resistor (680ohm again) between pin7 and pin6
and pin 3 is output.
But its got a cool little led so it must work
Thanks for your info verry helpful
Thank you for sharing this video learned much from it and will share from the Dominican Republic Guillermo keep it up
"Chinese Power Saver - Does it actually save power? "
Sure it does, but only while traveling through another dimension.
I've never heard of this device, my mother bought one for the holidays to give to me...... I knew it was BS just by reading the little booklet.
Exceptionally well-made video.
Great informative video thank you
scott could you also do a review about thise anti radiation stickers that claim they reduce cellular radiation and energy consumption
I will see what I can do
Technically, if those stickers contain a thin slice of lead it would "work".
But instead of protecting your head thus "you", it will only protect your palm......
You should debunk more chinese $hit$ellerS
I will think about it
Your demonstration is very good. We can easily understand.. thanks
I saw this product on my Facebook feed and was skeptical. Thank you for the product review because I had a hard time finding one.
Next you should check cheap stuff from the dollar store. Most are crappier than this. The only reason I buy some electronics from it is because I simply take it apart and use its parts. You cant seriously use this stuff
Der Knistermann says Jenisis girl
I think the trick is, it will burn your house down. Collect the insurance money and have $0 electric bill. PROFIT
I came here because the ad for one of those devices was so catchy I had to come see you for myself.
THANK YOU Very Much, you have just saved me a lot of money & time. You are very intelligent & deserve admirable respect.
Now here comes GreatScott, that now BUSTED this fenomenally unsenseful (no making sense) instrument. Thx for being inspired by EEVSBlog!
Keep more busting no sense electronic contraption! Help EEVSBlog open consumer's eye in front of producers and distributor!
being inspired by
Did you know you can edit your comment?
The word "unsenseful" doesn't make any sense at all. You're trying to be sarcastic and funny at the same time but it's not working.
K1ngjulien_ making sure that I don't forget to have to.
I think you mean nonsensical not unsenseful
156 chinese disliked this video.
hahaha, I'm a chinese but I still like it :)
I'm Chinese but I didn't dislike
@@human_bing I'm Chinese and I disliked it
400
@@IhonLiu - China's asshole! Cannibalism!
You just saved me purchasing one of those items. Thanks
Very good explanation