The power saver that was hammered several years ago can still sell 100,000+ per month
To be reasonable, Tony’s first reaction was: Is this thing still there? So I glanced at the online shopping platform and found that not only are they still alive, but they are selling quite hot.
Similar to most IQ tax products, the function of the power saver is publicized, how to exaggerate how to come:
whatair conditionerJust turn it on, save 80% of electricity, the meter will not turn…
It sounds like spending dozens of dollars to buy a “miniature nuclear power plant”, which will save you electricity and money continuously.
Moreover, the stores all claim to have stable guarantees, and they are often free to try for 80 days or 100 days. If they are useless, they can refund them for free. Some merchants put out the signboard of “No need to pay 100 billion.”
It sounds so nice, who doesn’t get confused? But what is the actual effect? Tony briefly researched this power saver and summed it up in one sentence:
Power saver can theoretically save electricity, but in fact it must not save your electricity bills!
Is it a bit abstract? This has to start with the principle of electrical operation. In the circuit, electrical appliances can generally be divided into three categories according to their different properties, pure resistive, inductive, and capacitive.
Purely resistive electrical appliances are those that heat up quickly, incandescent lamps, irons, etc. They can basically utilize all the electrical energy with high efficiency. But most of our common household appliances are actually inductive, and they have motors inside them. As we all know, in order for the motor to work, it is necessary to generate electromagnetic induction in the internal coil, so that the rotor inside can turn and bring mechanical power.
The four-wheel drive motor that everyone played with when they were young is a small motor.
There are coils in there. ▼
For electromagnetic induction to occur, energy must be consumed to generate a magnetic field. This part of the consumed energy is reactive power, on the contrary, what makes the rotor turn is active power.
It’s a bit like beer, although not many people like to drink beer foam, but without the foam, the beer is not as good, and you can never pour a glass of beer without foam.
In order to eliminate the reactive power as much as possible, it is a common practice to add capacitors to the circuit.
The specific principle may be troublesome. Anyway, as long as you know, capacitors and inductors can form complementary components in the same circuit. The careful combination of the two can effectively reduce the reactive power in the entire circuit, thereby achieving the effect of “power saving”.
The most common one we see in real life is the capacitor compensation cabinet. But this thing is very complicated. If you want to save power, you have to make a reasonable ratio of capacitors and inductors, which requires strict calculations and a lot of auxiliary components.
Therefore, the general capacitor compensation cabinet is a behemoth with an expensive face.
But the power savers we bought online all look malnourished. Do you think this thing might save power?
Many netizens have dismantled power savers before: the internal structures of common power savers on the market are also similar: capacitors, small lamp beads, and “circuit boards”.
Among them, the capacitor is used to “save power”, the lamp bead is responsible for handsome, the “circuit board” may not be powered at all, it is a gift, and the total cost may be 1-2 yuan. The dismantled version of this brother doesn’t even have a capacitor ▼
This pile of junk wants to hit the big luck and achieve the appropriate power saving effect. More importantly, even if you are lucky enough to step on the shit and reduce the reactive power, it will still have no effect on your electricity bill.
Because the state does not charge residents for reactive electricity at all.
Even, your electricity bill may increase instead of decreasing.
After all, there is a small lamp bead, which will increase power consumption to some extent.
Some poor friends may say: What are you afraid of, the store owner didn’t say that it can be refunded if it is useless, but it really proves that it is useless and can still make money? I can only say that I think too much. At this time, the merchants often keep fooling around, telling you that it will take a while before it will work, and the more you use it, the more effective it will be.
The electricity bill for reuse is indeed going to drop, and the air conditioner is not turned on when the weather is cool. Can the electricity bill remain the same, but is it related to the energy saving? If you persevere and ask questions and rush the customer service, they may ignore you directly.
In the Internet complaint platform Heimao Complaint, there are not a few complaints about power saving. But looking at it, none of the merchants really lost, and there are many returned goods that can’t even get back the money they originally paid.
Therefore, there is no good wool in the world. If you really want to save power, it may be more useful to turn off the power strip and unplug the air conditioner. Oh, by the way, the editorial department has spent huge sums of money to buy back three power savers with different price points and started to raise Gu.
In the follow-up, we will also give you an evaluation + dismantling video. Interested friends can pay attention to the B station @ Poor Review TV to squat.