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Q&A

Q 7. How to use mobile phone power and how to maintain the user?
- A
  First of all, it should be noted that the so-called maintenance, is in terms of brand products, if your product is cottage products, no matter how maintenance, its risk and harm can not be ruled out. So Xiaobian proposal big in the purchase of mobile power, be sure to look at whether the product has been reported in the media (media mainly refers to: Zhongguancun online, Pacific Internet, Huaqiang North computer network, etc.). Because the cottage products must not be such a platform, Moreover, ... Details
Q 8. What are the parts of the mobile power supply?
- A
  For mobile power we have a certain understanding, there are many friends will be curious mobile power is composed of those parts, the following we have to look at: Mobile power is mainly composed of three parts. 1, shell This can be based on batteries, PCBA protection board to choose the mold, DIY, you can use the mold can be. This eliminates the need for matching jobs. 2, batteries, batteries in the choice we can choose 18650 or polymer, 18650 batteries are fixed size. So only in the mo... Details
Q 9. What are the common types of switching power supply?
- A
  Switching power supply common load has two categories, one is a constant load (also known as static load or fixed load), the other is the dynamic load (also known as variable load). There are many types of dynamic loads, such as transient loads, constant current loads, constant power loads, peak power loads, inertial loads, and low noise loads. For dynamic loads, the switching power supply should have current limiting or cutoff protection. Details
Q 10. What are the characteristics of the transient load of the switching power adapter?
- A
  Transient loads are also known as high di / dt dynamic loads. Which is characterized by transient changes in the load current, and the load current change rate (di / dt) is very large. For example, the rate of change in current for high-speed logic and RF / microwave transmitters may exceed 100 A / ps. The current production of low-voltage microprocessors in different modes of operation between the fast switching, will also have an impact on the switching power supply in a few nanoseconds time c... Details
Q 11. How can I improve the transient response of the switching power supply?
- A
  In order to improve the transient response, it is recommended to use AVX tantalum capacitor as output capacitor, this capacitor is a metal tantalum as a positive electrode, dilute sulfuric acid and other liquid as the negative, tantalum surface oxide film made of medium. The main advantages of high insulation resistance, wide frequency response, low leakage current, good temperature characteristics (operating temperature range of -55 ~ +125 ℃), small size, large capacity, stable performance, lon... Details
Q 12. What is the load characteristics of the switching power adapter?
- A
  The load characteristic of the switching power adapter is the relationship between the output voltage and the output current when the input voltage is rated. Details

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