The Thyristor continues to be a useful power semiconductor device found in many home appliances in a multitude of applications, such as motor control in washing machines, control of a vacuum cleaner, dimming of a lamp or even to control various heating elements. The Triac, which is a bi-directional thyristor, is a cost effective power switch that can operate directly on the 110/240 V Mains. The low-cost and high reliability of the Triac makes it the optimal switch for most home appliances. This webinar will review the basic concept of the Thyristor, with a narrowing scope toward the proper implementation of triacs into various applications to guarantee reliable operation. It will include discussion of technology used in Thyristors over the years and explain why NXP’s Planar Passivated Triacs have become the device of choice with engineers due to the superior reliability and performance.

What will attendees learn:

  • The basic principles of Thyristors and proper component selection.
  • Thyristor technologies—the NXP advantage
  • Causes of false triggering
  • Gate drive considerations
  • Replacing relays with triacs
  • Triggering from microcontrollers
  • Circuit layout techniques for best false trigger immunity
  • Capacitors—the triac’s enemy
  • Triac failure modes
  • Motor applications and their implications for the triac

Who should attend:Engineers new to Thyristors, as well as experienced Power Design Engineers

Presenter Overview:
Nick Ham, Concept Engineer and Application Specialist, NXP
Nick Ham is a Concept Engineer and Application Specialist who works closely with customers’ technical personnel. He works with all power Bipolar Products, but specialises mostly in Thyristors (Triacs and Silicon Controlled Rectifiers). He has worked for NXP (formerly Philips) Semiconductors, Manchester, England since 1993, during which time he has acquired a deep knowledge of customers’ applications and the operation of the semiconductors in them. 

Prior to 1993, Nick worked for 13 years at British Aerospace, during which time he served his apprenticeship and qualified as an Avionics Engineer, specialising in Analogue Electronics. He graduated in 1986 with a Degree in Electrical and Electronic Engineering.