Some chargers will make a "ZZZ"sound when charging, some chargers sometimes appear only when chargingdifferent devices, and some charging process at a certain time will have a"ZZZ" sound, but even if encountered but rarely a problem!

First of all, explain this "ZZZ"sound is the charger in which parts issued.

This is a high-frequency transformer in the cell phone charger work to sound,so even if the sound is not particularly large, or very safe.


China is generally 220V AC, cell phone chargers first rectified into DC highvoltage, and then use the oscillation circuit into tens of KHz high-frequencyAC, and finally through the "high-frequency transformer" changed intoa low-voltage DC.


The real reason isthis "high-frequency transformer".


Charging process, the high-frequency transformer produces a variable magneticflux, the "core" inside the corresponding high-frequency vibration,this high-frequency vibration on the "ZZZ" sound, but under normalcircumstances this sound will hardly be heard.


The size of this sound and the size of the current also has a directrelationship, for example, the phone's original accessories charger, aftertesting, the current size will be controlled in the most appropriate range, sothe "ZZZ" sound will hardly be heard.


But if you use a charger that is not the original charger, the charger'scurrent control is not so accurate, when the charger current is too large, thevibration frequency is too large, ZZZ sound will be heard by the human ear, butthe charger itself does not exceed its own load will not be dangerous, thephone's internal charging control chip will also control the current, for thephone basically will not be harmed.


It is recommended to choose a charger with the same charging protocol supportedby cell phones and other products, the chances of producing the "ZZZ"sound will be much less.

Of course, high-frequency transformerinsulation paint is not immersed in good or loose core and other cases, it is adifferent story, then the sound is very likely to be heard by the human ear, itis quite uncomfortable. Of course, the charger has been used for a long time,aging; or there is an external force charger and other circumstances are alsothere, the inductor coil has loosened, the gap has become larger, the core isloose, etc., are likely to make the ZZZ sound becomes larger.

The good thing isthat the regular chargers have a variety of protective measures, especially nowthe state designated by the various levels of safety regulations are to ensurethe safety of its chargers.

The real danger or the kind of poorquality chargers, counterfeit chargers, technology, materials are very poor,and even inside the "counterweight block", not only on the phone andother products are harmful, and even the occurrence of explosions, fire andother dangers. Therefore, we should choose the charger or to choose the regularbrand, the regular channel products.

Shenzhen BON Electronics Co.，LTD. was founded in 2001, presentlylocated in the most dynamic and creative Chinese city Shenzhen. As awell-established combination of R & D, manufacture and sale, the companyspecializes in power adapter and charger for digital communication product.Currently, the company has ISO9001 Quality Control System certification,international safety and environment-friendly certification of ETL, CCC，CE, RoHS and FCC, etc.


After more than ten-year operation with great concentration since establishmentof the company, with our strict management, excellent R & D, high productreliability, customer-oriented service, as well as full support from ourcustomers and various friends, our products sell to more than 100 countries andregions all over North America, South America, Europe, etc. Based on a goodreputation and popularity with customer praise and confidence, BON has been aleading company in the industry.


With BON operation principle of Surpassing and innovation (Innovationbeyond)and Double-win Based on Consistent Accumulation”, BON enterprise spiritof “Dedication, Ambitiousness, High-quality and Integrity”, BON has beenconsistently aiming at “Providing Technical Convenience and Happiness to MorePeople with Double-win Policy”! BON Electronics expects sincere cooperationwith all our customers in purposes of co-development and double-win.

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