13 Triac - 1.3 Triac TRIode AC semiconductor switch 1...

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1.3 Triac - TRIode AC semiconductor switch 1. Nguyªn lÝ cÊu t¹o 2. §Æc tÝnh, th«ng sè 3. KÕt cÊu 4. Më triac 5. KiÓm tra
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1. Nguyên lí c u t o §iÒu khiÓn tiristor trong m¹ch ®iÖn xoay chiÒu Yªu cÇu chÕ t¹o U U t¶i t b i t¶i Z T U 1 a Khi sö dông tiristor chØ ®iÒu khiÓn ®îc nöa chu k× Khi cÇn ®iÒu khiÓn xoay chiÒu th× lµm thÕ nµo?
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1. Nguyªn lÝ cÊu t¹o XuÊt xø cÊu t¹o triac T 2 Z T 1 U 1 Z T U 1 U U T¶i t b 1 2 U U T¶i t a §iÒu khiÓn ®èi xøng hai tiristor §iÒu khiÓn mÊt ®èi xøng hai tiristor 1 # 2
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Nguyªn lÝ cÊu t¹o CÊu t¹o triac cã c¸c líp b¸n dÉn ghÐp nèi tiÕp nh h×nh vÏ vµ ®îc nèi ra ba ch©n, hai ch©n MT 1 , MT 2 vµ ch©n ®iÒu khiÓn (G). VÒ nguyªn lÝ cÊu t¹o, triac cã thÓ coi nh hai tiristor ghÐp song song nhng ngîc chiÒu nhau (ghÐp song song ngîc) nh trªn h×nh vÏ N 4 N 3 N 1 P 2 N 2 P 1 MT 2 G MT 1 a) P 2 P 1 N 3 N 2 G MT 2 MT 1 b) MT 2 MT 1 G MT 2 MT 1 G P
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