In the Qi standard, there is a fixed frequency voltage regulation mode of work. That is, the fixed operating frequency, according to the dynamic load power requirements, through the voltage regulator unit, to achieve dynamic power output. However, the existing voltage regulator on the market first fixed the operating frequency of the voltage regulator itself, and then adjusted the input duty ratio to achieve the adjustment of the output voltage. The inherent disadvantages of this approach are: 1When the input voltage changes, it will directly affect the output stage.
Fixed frequency is better. The working principle of the frequency conversion architecture is to adjust the transmission power by changing the operating frequency, which will cause certain interference to the mobile phone circuit in some transmission bands, and the fixed frequency does not appear this problem.
In addition to these third-party brands, there are some transmitters that support Apple 5W as a representative, using a fixed-frequency voltage regulation architecture, which can also be used, it is reported that the fixed-frequency voltage regulation architecture can bring better charging efficiency, stability, FOD security, etc., better use experience, and also conducive to the development of industry norms. Due to theTherefore, after the purchase of wireless fast charging set, we must identify the fixed frequency voltage regulation scheme architecture or officially recognized wireless charging products.
This is because the advantage of variable frequency air conditioning relative to the frequency of the air conditioning is that the compressor does not frequently start and stop to control the temperature, this is because the advantage of the variable frequency compressor is to ensure the cold output, but the reality is that the air conditioning that determines the frequency in a short period of time (hours) is actually not frequent start and stop, only when it is opened for a long time to control the indoor temperature. Fixed frequency air conditioning switching, more convenient, ordinary host can be completed.
The second is Envis Apple NoneLine charging, the feature of this model is that it can automatically identify what brand on the phone, such as Apple, or Android, and then charge according to the phone, and also support 10W fast charging. The third is the Toulas iPhoneX wireless charger, which is specific to the fixed frequency charger, designed for the iPhoneX, compatible with Apple's 5W fast charge.
Yes. After using an inverter, this direct current can be turned into 50HZ220V alternating current. If the electrical power is slightly larger, after converting to 220V, the power in the charging bank will be exhausted in an instant. Inverters convert direct current energy (electricityCell, battery) into a fixed frequency fixed voltage or frequency modulation voltage regulation AC (generally 220V, 50Hz sine wave) converter. It is composed of inverter bridge, control logic and filter circuit.
1, ①, about the above MDY-08-EV model of the charger DC output is: 5V/2A. ②, about the above MDY-11-EM charger DC output is: 5V / 3A, 9V / 23A, 12V / 67A, 10V / 25A. 3, to the above two charger models are different, the voltage, current and power of the two chargers are different.
2, to the MDY-08-EV and MDY-11-EM, are representative of the charger model, for example, MDY-08-EV original charger DC output: 5V/2A. The MDY-11-EM charger DC output is: 5V/3A, 9V/23A, 12V/67A, 10V/25A. So, these are two different modelsThe number of chargers, the parameters are also different.
3, MDY-08-EV and MDY-11-EM are two different charger models. For example, the original charger of the MDY-08-EV has a DC output of 5V/2A, while the DC output of the MDY-11-EM charger includes several parameters such as 5V/3A, 9V/23A, 12V/67A and 10V/25A. Therefore, the two models of chargers are different in terms of parameters. The above information is for reference only.
4, the appearance is not the same mdy08eh and es are respectively millet 5 andMillet 6 charger, they are slightly different in size, the former size is slimmer, the latter size is short and thick, the volume of the two are similar. mdy08eh is a black color, and it only has one color, black. The mdy08es has two colors, white and gray, the bottom is gray, and the top half is white.
5, the mdy08ev parameter is the output specification is 5V2A10W, the input is 100 to 240V wide voltage. In addition, the appearance of the charger has changed from the previous black to the gray and white design, and the volume is smaller, the style is more simple and fashionablePrinted with a Xiaomi logo, the volume is slightly larger than 1 yuan coin.
Recently, Green Union launched a popular desktop wireless charger (model CD186), Apple Android universal, support 5W and Apple 5W, Samsung 10W wireless fast charge, the key is the price of only 49 yuan, cost performance can be said to crush the market similar 99 yuan products. In order to understand the workmanship of this product, how to bring you the next