There are more and more electronic products nowadays, and charger cords and the like are also mixed. Due to various reasons, nearly one-third of the electronic product's use time is spent in charging. If you do not choose the charging head and charging cable very well, not only will the charging time be lengthened, but the battery life will also be reduced. The battery life is not terrible, terrible is that almost all electronic products are now non-replaceable battery design If you want to replace the built-in battery, not only do you need at least a set of tools, but also need a certain experience of disassembly, a lot of electronic products are not so easy to demolition So, before that, I started with a YZX green watch. The accuracy is very good, the experience can also be There will be a problem, although the accuracy of this green table is high, but for the charging voltage, current curve, the overall charging capacity, the measurement is not very convenient, the reading is not very convenient When testing the output quality of a charging head, it also needs to be used with a dummy load. The experience and operation are not very good. This, there is a demand to buy it Aunt Zhang said, well, there must be straight and pull out grass... So, a self-loaded gadget that can be connected to a computer to read test data comes into my sight. It can not only connect the computer to draw real-time voltage and current curves, but also automatically detect the corresponding load voltage of the charging head. It also supports the mainstream fast charge technology (QC2.0, QC3.0, MTK-PE), and the detection and dummy load are done together. Paste a picture to see the parameters The square box is handy, the weight is also OK, no feeling, shaking, no sound, good packaging After opening, it was packed well, and the thick row of gas flowed around the circle. Gas traps are anti-static bags. When you see this, you want to wash them first. Open anti-static bag, a small fat, golden fat To say that you are a chubby, you look at this thickness... not one or two layers, or three or four layers, it's a good multilayer The USB plug is visually copper and the magnet does not absorb, which can effectively reduce contact resistance compared to iron. The thick copper heat sink dissipates heat to the dummy load power FETs. The previously purchased YZX dummy load has a similar structure. The name EBD-USB is marked at the end and it is not known how to interpret this EBD. A micro USB interface, this jack is connected to the computer, can read data Copper field radiator below the field effect tube, pcb is single-sided At the bottom, there is a transparent acrylic board, which can effectively protect pcb and electronic components with ZKE printed on it. In the place where the line was entered, soldering was performed where the high current was taken. Compared with YZX green table Thickness contrast, you can see one is a small mini, the other is a big fat! There is a small blue light on the computer, and it will light up 1, first install the driver and program (installation tutorial) 2, the software interface 3, when inserting EBD-USB+, win10 will automatically install the driver, and can identify 4, the following test compare the specific data Millet mobile power, no load voltage, only one green meter, is 5.1548V EBD-USB+ test under no-load voltage, 5.165V, feeling slightly higher Serial EBD-USB+, green meter voltage drops slightly to 5.1544V Serial EBD-USB+ display 5.150V, this is almost the same, almost the same Debug EBD-USB + current 1A, green meter shows current 0.9984A, voltage 5.849V EBD-USB+ display voltage is 5.038V, current 1A. You can see a slight difference between voltage and current Fast charge trigger, select protocol and voltage How to test the charging head load The actual test, the charging head is ANKER's powerport+6 charging head, 6 port 60W, single port support QC2.0 fast charging agreement 5V voltage, maximum load about 3.1A, power about 15W Fast charge trigger, voltage 9V The maximum load current is about 2.4A, and the power is about 21.6W Fast charge trigger 12V The maximum load current 1.8A, power is about 21.4W, you can see the test charge head is still very good, automatic step-up boost test, and give images and tables It can also be used as a discharge device to discharge the millet's 10400 mAh mobile power. The current is just 1A, the current is 2A, and the time is 4 hours and 14 minutes. The discharge capacity is 4896mAh. After charging, it takes 6 hours and 43 minutes to fill up. (In my heart, I regret that this charging speed is really too slow. I don't want to buy a mobile phone with a capacity of 10000mAh or faster after I don't buy it.) The capacity of going in is about 9118mAh, mobile power has been used for several years, and capacity loss is normal. Carefully look at the charging current, found that for some time to fluctuate (that is, the red vertical line), it seems that because the millet charging is controlled by the MCU, the moment when the current is reduced is the moment when the MCU detects the battery voltage, and it has no effect. It's the curve that looks strange The following is my ipad Air2 discharge to 3% after the full curve, the charging time takes about 4 hours, charging capacity 6738mAh, ipad Air2 design battery capacity is 7340mAh, you can see ipad Air2 battery capacity is also lost, and personal Using the same experience, I feel that the iPad's power is not durable before. However, the use of fast 2 years, such a loss is still acceptable 1, in addition to the volume is a bit large, there is no gift of portable metal box, EBD-USB + is still very good, whether it is the test voltage or current, or capacity, or test the charging head output capability is very good 2, the mainstream fast charging technology is fully supported (do not say what oppo vooc flash charge, that technology in addition to the oppo series is in use, the other no one used, no use), the actual test can be perfectly triggered 3, can be connected to the computer to read and detect data, easy to use, and the system can be a comprehensive detection and analysis of charge curve 1, most of today's consumer electronics products are using lithium-ion batteries, so there is no need to just buy something to activate the battery, completely flushed once or twice, or charge the day and night like the statement, do not need . Lithium-ion battery is the best maintenance with the use of rushed, pay attention to points are: try not to completely power, have to use the phone to automatically shut down before charging, this is wrong, will damage the life of lithium-ion battery; also try not to always Low battery charge, such as 10%, 20% charge, the best is to use with the red, if too much trouble, about 30%, 40% can be charged; do not see the full to pull out, in fact The full charge process of a lithium-ion battery includes two processes of charging and turbulent flow. Only when the trickle charge is over, is it truly full and full in order to reach the rated capacity. 2, buy a good quality charging head and charging line, to ensure the safety of charging and charging voltage, current size. Poor quality charging heads and charging lines can result in low charging voltages, low charging currents, or inability to identify the device so that it cannot be charged at full current. Even unqualified charging heads and charging cords can be dragged to death by the load device. Under high current loads, the charging cords, hot hairs, and fires can burn. 3, choose the speed matching charging head, if your load device has fast charging technology, such as QC2.0, QC3.0, vooc flash charge, etc., try to select the corresponding matching fast charging technology of the charging head, so as to ensure the charge speed. If there is no fast charging technology and the rated charging current is 1A or 1.5A, try to select a charging head with a rated current of 2A or 2.5A to ensure the safety of long-term charging and the charging speed. 4. If the original charging head of the Apple device is damaged or lost, try to select the charging head that can identify the Apple device, so as to ensure the charging speed. For example, the charging head of an Apple device can be identified, and the maximum current of the iPad can be charged to 2.3 A and the power is about 12 W. The charging head of an Apple device may not be recognized to only give 1 A, the power is 5 W, and the charging time is extended by more than two times. ...... 5, lithium-ion battery is very unfavorable for high temperature and low temperature, the normal operating temperature is about 0 °C -40 °C (this parameter is not true, the temperature is too high or too low will lead to a decline in battery capacity), so winter or summer Try to pay attention as much as possible. thank you all! END Audio Line Transformer,10W 6Ohm Audio Line Transformer,Audio Line Transformer 100V,Audio transformer for amplifier Guang Er Zhong(Zhaoqing)Electronics Co., Ltd , https://www.poweradapter.com.cn
1942993e356cf479850fe69e086b.jpg" />
Tips:
I. Introduction
An Audio Line Transformer is a specialized type of transformer designed specifically for use in audio lines. It utilizes the principles of electromagnetic induction to transfer audio signals from one circuit to another without direct electrical connection, offering functions such as impedance matching, signal isolation, and in some cases, conversion between balanced and unbalanced audio signals.
Key Functions
Impedance Matching: Audio Line Transformers help to match the output impedance of one device with the input impedance of another, minimizing signal reflection and distortion, ensuring efficient and lossless signal transmission.
Signal Isolation: By electrically isolating the audio signal, these transformers prevent ground loops and noise interference caused by potential differences between different devices, enhancing the system's overall noise immunity.
Conversion between Balanced and Unbalanced Signals: Audio Line Transformers can convert between balanced and unbalanced audio signals, accommodating various audio system configurations and enhancing flexibility.
September 22, 2024