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Which method to control AC (50 Hz/60 Hz) is preferable?

Latest Updated:08/01/2005

Question:

Which method to control AC (50 Hz/60 Hz) by controlling phases is preferable, the method of using two thyristors connected in reverse series, or the method using only one TRIAC?

Answer:

The method using one TRIAC is recommended.
TRIACs were developed for controlling AC circuits.
An AC circuit using a TRIAC can be simplified in configuration and its cost can be lowered, as compared with a circuit using thyristors.
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