A few days ago, oppo held an online seminar on “charging technology”, at which a wave of new fast charging products were released.
and even in such a small volume, the two chargers can achieve 50 W and 110 w PD output power respectively.
small size, high-power, and also supports the usb-pd charging protocol used by the thin laptop and switch. After reading it, Tony calls out to be intimate:
the little friends who often travel or travel have a deep understanding. If there is one thing that you don’t want to bring but you have to bring, it’s probably not a change of clothes or a computer tablet, but a charger!
as the only thing with edges and corners in the bag, the charger is afraid of scratching the shell when it is put with the computer, and it is afraid of crushing the screen when it is placed with the tablet. If it is placed close to the body, the bag will show a sharp pain in life.
so when oppo released such a flat, hands-free charging head with enough power to charge the laptop, Tony, a business dog, finally shed bitter tears.
due to the volume, oppo did not continue to use the traditional big a port, but directly used the “extremely advanced” usb-c interface at the charger end.
since usb-c is used in the charger, the matching cable will naturally change. And different from the ordinary usb-c data cable, the extra cable of super flash biscuit is integrated with emark chip.
now there are more and more fast charging protocols, and the specifications of chargers have evolved from the earliest “five blessings and one safety” to 3.6V, 5V, 9V, 12V, 15V, 20V, etc.
one problem caused by different voltage gears is that if a mobile phone only supports 5V voltage input, but the current working mode of the charger is 20V fast charging…
in order to solve this problem, USB standards organization has developed a set of standards called PD PPS, which enables mobile phones and chargers to exchange supporting charging specification information.
well, Yijia and oppo are the same family. It is estimated that it is no secret now, so it is not necessary to say what is the relationship between oppo’s vooc flash charging and Yijia’s warp charging.
in the past, whether wired or wireless, oppo charger could trigger the flash charging logo on the mobile phone screen smoothly when it was plugged into a mobile phone.
after the measurement, it was found that when most mobile phones were charged with biscuit charger, the power would not exceed 18W.
in the past, in order to ensure the stable output of voltage and current, many cylindrical electrolytic capacitors need to be integrated into the charger. Since the development of electronic equipment, electrolytic capacitor has not been absent in household appliances.
this time, however, in order to achieve an unprecedented lightweight design, the superflash biscuit charger first removed the electrolytic capacitor and replaced the capacitor with a clamping diode.
However, the performance of clamping diode alone can not fully achieve a charging power of 50W. In the assumption of oppo, the battery can be used as a part of the charging equipment to replace part of the capacitor in the form of pulse current.
therefore, the version of the above saying becomes: super flash biscuits charge other devices with a maximum of 30W; super flash biscuits charge oppo flagship mobile phones supporting super vooc, 50W!
after knowing the truth, Tony found an oppo Reno 4 Pro mobile phone. Sure enough, the familiar super vooc icon appeared after plugging in, and the display power of the meter also broke through the previous 30W limit.
but even if the scene is limited, Tony has to say that even if the output specification is 30W, the super flash biscuit charger is the smallest.
However, Tony also found that the super flash biscuits obtained by some peers successfully triggered the vooc flash charging mode on the one plus eight pro, and realized 23W high pass QC fast charging with other mobile phones.
Tony guesses that the problem is probably the charger itself – after all, it’s a prototype before the official launch, and it’s normal to occasionally encounter a small bug. Continue ReadingStraight screen S20! Samsung Galaxy S20 Fe exposure: 1Hz high brush + snapdragon 865