Understanding EMC Conducted Noise Immunity for Touchscreens


One of the main concerns for capacitive touch circuits that are used for delivering User Interfaces for products is Conducted Noise Immunity (or CNI). Susceptibility to conducted current disturbances and its impact on touchscreen performance is often overlooked at the start of a design but should be factored-in early, or can become costly further down the line.

Electromagnetic Interference (EMI) or 'noise' can cause inaccurate readings from your touchscreen. Touchscreens can be a source of noise, but noise can also come from ambient light, a display or charger.

Next week, I will be giving a workshop at the Engineering Design Show at the Ricoh Arena in Coventry to discuss: 

  • What is CNI
  • How noise is generated
  • It's possible effects on the your end produc
  • I will suggest ways of detecting CNI and resolving issues
  • Why it is important to consider Electromagnetic Compatability (EMC) regulations from the very start of any project

The session will include an introduction to design recommendations, prevention guidelines and compliance tests and how we at Anders select the most optimum components for each product to minimise the effects of EMI so you can rest assured that the embedded display part of your design is as good as it can be.

Why not join me on Thursday 18th October at 12:15 in Theatre 2.

Register for your free ticket here

 

 



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