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STOMO.11
Visitor II
August 22, 2025
Solved

ACST series

  • August 22, 2025
  • 1 reply
  • 807 views

I would like to use the ACST series as an AC switch for a 90kHz AC capacitive load. Is this possible?

Best answer by Peter BENSCH

No, TRIACs are designed for mains frequency and cannot be used at such high frequencies. In addition, you want to switch a capacitive load, which results in large peak currents.

You might be able to solve your problem with fast IGBTs:

Hope that helps?

Regards
/Peter

1 reply

Peter BENSCH
Technical Moderator
August 22, 2025

No, TRIACs are designed for mains frequency and cannot be used at such high frequencies. In addition, you want to switch a capacitive load, which results in large peak currents.

You might be able to solve your problem with fast IGBTs:

Hope that helps?

Regards
/Peter

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