Light-Activated Thyristors

  • D. Silber
  • H. Maeder
  • M. Fuellman
Part of the Earlier Brown Boveri Symposia book series (EBBS)


Perfect isolation between power and control circuits in high-voltage converter equip­ment is obtained by optical thyristor triggering. Direct optical triggering of power thyristors and auxiliary thyristors with lasers or LEDs, i.e. triggering with an internally generated photocurrent, requires the development of highly trigger-sensitive thyristor gates. High trigger-power amplification and different methods of avoiding or compensating for fault triggering permit the design of light-activated thyristors which can be triggered with light power in the milliwatt range. The temperature dependence of turn-on properties and some relations to thyristor structures can be obtained from relatively simple charge-control model calculations.


Trigger Level Gate Structure Trigger Sensitivity Optical Trigger Trigger Current 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • D. Silber
    • 1
  • H. Maeder
    • 1
  • M. Fuellman
    • 1
  1. 1.AEG-TelefunkenFrankfurtFed. Ref. Germany

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