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    1. Network port transformer introduction

      Introduction Differential mode transmission characteristics (functional characteristics) Common mode transmission characteristics (EMI suppression characteristics)

      download times 0 type Application Documents uploaded 2014-02-08

    2. USB Electrical Characteristics

      ??──Electrical characteristics of USB (Part 6) Zhou Yujun, Department of Computer Science, Nanjing University The electrical characteristics of USB (Universal Serial Bus) mainly describe the signal transmission and voltage distribution. We will introduce them in detail below. First, let\'s take a look at its signal transmission. 1. Signal transmission USB usually uses a differential output driver to control the transmission of data signals on the USB cable. Before understanding the specific signal transmission, let\'s talk about the characteristics of USB devices. (I) Characteristics of USB drivers and their use A connector at the end of a USB device is a short continuous circuit composed of D+, D-, Vbus, GND and other data lines, and requires a cable shield on the connector to prevent the device from being damaged during use. It has two working states, namely low state and high state. In the low state, the working voltage Vol of the static output end of the driver varies from 0 to 0.3V, and is connected to a 15kΩ ground load. The output voltage variation between the differential high state and low state should be kept as balanced as possible to reduce the distortion of the signal.

      download times 2 type Application Documents uploaded 2014-02-08

    3. Introduction to LC filter design methods and comparison of their simulation characteristics

      Introduction to LC filter design methods and comparison of their simulation characteristics

      download times 3 type Application Documents uploaded 2014-02-08

    4. Differential Mode Noise vs. Common Mode Noise

      Differential-mode noise and common-mode noise explained

      download times 2 type Application Documents uploaded 2014-02-08

    5. The relationship between traces and current in PCB

      The relationship between traces and current in PCB

      download times 0 type Application Documents uploaded 2014-02-08

    6. A lithium battery pack equalization circuit and its control strategy design.pdf

      In a power lithium-ion battery pack, single cells are mostly connected in series. Since each single cell is not exactly the same in terms of initial capacity, voltage, internal resistance, and working environment, there are inconsistencies between the single cells in the battery pack. The differences caused by continuous charge and discharge cycles will accelerate the capacity decay of some single cells. The capacity of the series battery pack is determined by the minimum capacity of the single cell, so these differences will shorten the service life of the battery pack. In order to reduce the impact of this imbalance on the lithium-ion battery pack, a balancing circuit should be used during the charge and discharge process of the battery pack.

      download times 6 type Application Documents uploaded 2014-01-24

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