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Würth Elektronik Watts Up Podcast

Nov 4, 2021

EMI is a common problem engineers face when designing a new application. How can a developer solve EMC problems on the circuit board or prevent them from occurring? What has to be considered and where does it make sense to use a filter? Which system impedances are there and what are the deciding factors for which...


Jun 10, 2021

Today's discussion centers around the Universal Serial Bus, commonly known as USB.  We'll be discussing the interface from an EMC point of view, and talk about technologies, hardware and components, PCB layout, and more.

FIGURE 1:

REFERENCED IMAGES IN THIS PODCAST:

Figure 1- Pin Assignment of the USB Interface

FIGURE 2:

Figure 2- USB Cable Construction

FIGURE 3:

Figure 3- USB Interface Bidirectional and Symmetrical

FIGURE 4:

Figure 4- Symmetrical transmission

FIGURE 5:

Figure 5- High Quality Circuit Design

FIGURE 7:

Figure 7-Differential Data Mode 2