Apr 03 10:28 AM PDT

Circuit design and layout are important when using TVS devices

Because many electronic devices now connect to other devices via busses using USB, HDMI, or Thunderbolt protocols, designers need to protect these I/O lines from damage caused by external events, such as electrostatic discharges (ESDs) and electrical fast transients (EFTs). As a result, many designers are now using transient voltage suppression (TVS) devices such as TE Circuit Protection’s Silicon ESD (SESD) devices to help prevent failures caused by these hazards.
[caption id="attachment_2109" align="aligncenter" width="419"]Figure 1. To help protect against damage from transients greater than 1 kV, you may need to use an MOV in addition to a TVS device Figure 1. To help protect against damage from transients greater than 1 kV, you may need to use an MOV in addition to a TVS device[/caption] Keep reading…

Mar 11 11:36 AM PDT

Testing ensures USB 3.0 compliance

usb-power-port

One of the beauties of the Universal Serial Bus (USB) from a user’s point of view is that it allows user to connect a variety of devices to a single type of port on their computers. From the developer’s point of view, they know that if they design their devices with a USB interface, their customers will be able to use their products with a wide variety of systems. What makes this all work are the operational specifications published by the USB Implementer’s Forum (USB-IF) and their test specifications and compliance programs.

What does it mean when a product is “USB compliant,” and why should you care? When a product is USB compliant, it means that the product has been tested and that it meets all of the interoperability requirements. From a practical point of view, this means that a compliant USB device will work with other compliant USB devices. Keep reading…

Feb 10 01:38 PM PDT

CAN: Not just for automobiles anymore

In the early 1980s, work began on developing a way to connect the various electronic control units (ECUs) in automobiles. That work led to the introduction of the Controller Area Network, or CAN, in 1986. CAN was so successful that developers in other industries adopted the hardware and software protocols for applications such as industrial automation. It can truly be said that CAN is not just for automobiles anymore. Keep reading…

Jan 23 02:13 PM PDT

Wearables make another strong showing at 2014 Consumer Electronics Show

The Consumer Electronics Show (CES), held every year in Las Vegas in early January, is arguably the most important show in the industry. While giants like Microsoft and Apple are absent, CES has become THE exhibition for new and emerging companies. If you want to see where consumer electronics is headed, not where it’s been, CES is the place to be. Keep reading…

Jan 16 12:46 PM PDT

Power over Ethernet presents circuit-protection challenges

Power over Ethernet, or PoE, has become a popular way to power devices, such as security cameras and IP phones, by safely transferring electrical power over standard data cables. Some companies are even suggesting that PoE would be a great way to connect and power the advanced driver assistance systems currently under development by the automotive industry.

When implemented properly, PoE provides power to network devices without affecting network performance. PoE offers users a number of advantages. For example, it eliminates the need for electrical outlets at remote locations, greatly simplifying system installation. Providing backup power is easier, too, as backup power is needed only at a single point.
Keep reading…