{"id":19642,"date":"2026-01-01T10:24:34","date_gmt":"2026-01-01T02:24:34","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=19642"},"modified":"2026-01-01T10:25:21","modified_gmt":"2026-01-01T02:25:21","slug":"triac-vs-thyristor-key-differences-and-selection-tips","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/fr\/triac-vs-thyristor-key-differences-and-selection-tips\/","title":{"rendered":"TRIAC contre thyristor : principales diff\u00e9rences et conseils pour choisir"},"content":{"rendered":"
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Relais statiques CA<\/span><\/a><\/span> sont largement utilis\u00e9s dans<\/span> syst\u00e8mes de contr\u00f4le du chauffage, mais savez-vous quel est le composant le plus important \u00e0 l'int\u00e9rieur d'un relais statique CA (utilis\u00e9 pour le contr\u00f4le CA ou CC) ?<\/span><\/p>

Les relais statiques CA contiennent divers composants, tels que des r\u00e9sistances, des condensateurs, des circuits d'isolation \u00e0 optocoupleur et des unit\u00e9s de commande.<\/span><\/p>

Parmi ces composants, le plus important est le TRIAC ou thyristor dos \u00e0 dos. Il est charg\u00e9 d'activer et de d\u00e9sactiver la charge, garantissant ainsi un fonctionnement fiable.<\/span><\/p>

Bien que les TRIAC et les thyristors dos \u00e0 dos fonctionnent de mani\u00e8re similaire, quelles sont les principales diff\u00e9rences entre eux ?<\/span><\/p>

Cet article r\u00e9pondra aux questions suivantes :<\/span><\/p>

  1. Qu'est-ce que c'est ?<\/span><\/li>
  2. Principales diff\u00e9rences entre eux<\/span><\/li><\/ol>

    Continuons !<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Qu'est-ce qu'un TRIAC ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    TRIAC<\/span><\/span><\/a> est l'abr\u00e9viation de Triode AC Switch (commutateur CA \u00e0 triode), qui se compose de deux thyristors connect\u00e9s en anti-inverse et regroup\u00e9s dans un m\u00eame bo\u00eetier, partageant une grille commune.<\/span><\/p>

    Contrairement aux thyristors unidirectionnels qui ne conduisent le courant continu que dans un seul sens, les TRIAC sont con\u00e7us pour le contr\u00f4le du courant alternatif.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Il comporte trois bornes : MT1, MT2 et G, la borne G servant \u00e0 d\u00e9clencher la conduction bidirectionnelle entre MT1 et MT2.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Diff\u00e9rents\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Une fois qu'un courant de d\u00e9clenchement est appliqu\u00e9 \u00e0 la borne G, le TRIAC reste \u00e0 l'\u00e9tat activ\u00e9.<\/span><\/p>

    Alors, comment le d\u00e9sactiver ?<\/span><\/p>

    Il existe deux m\u00e9thodes :<\/span><\/p>

    La premi\u00e8re m\u00e9thode consiste \u00e0 d\u00e9connecter l'alimentation \u00e9lectrique principale des bornes MT1 et MT2 ;<\/span><\/p>

    La deuxi\u00e8me m\u00e9thode consiste \u00e0 supprimer le signal de d\u00e9clenchement de la porte (G), et le TRIAC s'\u00e9teindra automatiquement lorsque le courant de charge suivant passera naturellement par z\u00e9ro. Cette m\u00e9thode d'extinction utilisant la caract\u00e9ristique de passage par z\u00e9ro du courant alternatif est \u00e0 la base du contr\u00f4le de phase CA (tel que la gradation et la r\u00e9gulation de vitesse) et du fonctionnement des relais \u00e0 semi-conducteurs.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Qu'est-ce qu'un thyristor ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Passons maintenant aux thyristors.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Thyristors\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \u00c0 proprement parler, le thyristor est un composant cl\u00e9 d'un redresseur bidirectionnel \u00e0 contr\u00f4le au silicium (TRIAC).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Comme indiqu\u00e9 dans l'introduction au TRIAC ci-dessus, deux thyristors plac\u00e9s dos \u00e0 dos constituent un TRIAC et forment ensemble un dispositif de commande complet.<\/span><\/p>

    Le thyristor, \u00e9galement appel\u00e9 SCR (redresseur command\u00e9 au silicium), est utilis\u00e9 pour contr\u00f4ler les alimentations \u00e9lectriques \u00e0 courant continu.<\/span><\/p>

    On peut comparer un thyristor \u00e0 un robinet.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Son principe de fonctionnement est le suivant : l'anode (A) du thyristor est comme l'entr\u00e9e d'un robinet ; le courant circule depuis l'anode, tout comme l'eau entre dans le robinet par l'entr\u00e9e.<\/span><\/p>

    La cathode (K) est comme le robinet de sortie ; le courant sort de la cathode, tout comme l'eau sort du robinet.<\/span><\/p>

    L'\u00e9lectrode de contr\u00f4le (G) joue un r\u00f4le crucial dans le contr\u00f4le et peut \u00eatre compar\u00e9e \u00e0 la poign\u00e9e d'un robinet.<\/span><\/p>

    L'application d'un signal de d\u00e9clenchement \u00e0 l'\u00e9lectrode de commande \u00e9quivaut \u00e0 tourner la poign\u00e9e ; le thyristor conduit et le courant circule sans \u00e0-coups.<\/span><\/p>

    Il est important de noter que les thyristors ont une conductivit\u00e9 unidirectionnelle. Une fois activ\u00e9s, ils restent en conduction m\u00eame apr\u00e8s la suppression du signal de g\u00e2chette. Cependant, lorsqu'ils sont utilis\u00e9s pour contr\u00f4ler le courant alternatif, les thyristors se d\u00e9sactivent lorsque la polarit\u00e9 de la tension alternative s'inverse.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Diff\u00e9rences essentielles entre le TRIAC et le thyristor<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Il ne suffit pas de savoir ce que sont les triacs et les thyristors ; pour mieux les comprendre ou les choisir, il faut bien comprendre les diff\u00e9rences qui les distinguent.<\/span><\/p>

    Nous allons maintenant \u00e9num\u00e9rer 7 diff\u00e9rences cl\u00e9s, notamment le sens du courant, la structure, l'application du circuit, la m\u00e9thode de d\u00e9clenchement, la m\u00e9thode de coupure, les domaines d'application et le courant maximal admissible.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\n\t\t\t \n\t\t\t \n\t\t\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tObjet<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tTRIAC<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tThyristor (SCR)<\/span><\/th>\n\t\t\t \t\t\t\t <\/tr>\n\t\t\t <\/thead>\n\t\t\t \t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tDirection actuelle\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tBidirectionnel. Le courant circule entre MT1 et MT2.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tUnidirectionnel. Le courant circule de A vers K.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tStructure\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00c9quivalent \u00e0 deux SCR connect\u00e9s en parall\u00e8le inverse et int\u00e9gr\u00e9s sur une seule puce en silicium.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tStructure semi-conductrice \u00e0 quatre couches (PNPN).\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tApplication du circuit\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tContr\u00f4le direct des circuits CA, tels que la r\u00e9gulation de la tension CA, la gradation et le contr\u00f4le de la vitesse du moteur.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tCircuits \u00e0 courant continu ; ou commande par redresseur double alternance\/simple alternance pour les circuits \u00e0 courant alternatif.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tM\u00e9thode de d\u00e9clenchement\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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    \n\t\t\t\t\t\t\t\t\t\t\t\t\tComplexe, nous pouvons utiliser DIAC, des impulsions, des circuits DC\/logiques ou des circuits RC pour le d\u00e9clenchement.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tC'est simple, une impulsion positive est appliqu\u00e9e \u00e0 la grille par rapport \u00e0 la cathode.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tM\u00e9thode d'arr\u00eat\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tLorsque le courant passe \u00e0 z\u00e9ro, la suppression du signal de commande peut arr\u00eater ou couper l'alimentation de MT1 \u00e0 MT2.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tDans les circuits \u00e0 courant continu, un circuit commutateur est utilis\u00e9 pour couper le courant ; dans les circuits \u00e0 courant alternatif, le courant s'interrompt automatiquement lorsqu'il passe par z\u00e9ro.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tApplication\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tR\u00e9gulation de tension \u00e0 commande de phase, telle que les gradateurs, les r\u00e9gulateurs de tension et les r\u00e9gulateurs de vitesse.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tRedresseur, onduleur, commande de chauffage du syst\u00e8me CC.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\tCourant maximal admissible\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t320 amp\u00e8res, si \u00e0 l'int\u00e9rieur de bo\u00eetiers SSR, maximum 40 amp\u00e8res\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
    		\n\t\t\t\t\t\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t3200 amp\u00e8res\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    Conseils pour choisir des TRIAC et des thyristors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    Ci-dessous, nous vous proposons quelques conseils et suggestions pour faire votre choix en fonction de vos besoins :<\/span><\/p>

    Pour contr\u00f4ler les appareils \u00e9lectrom\u00e9nagers \u00e0 courant alternatif (tels que les moteurs \u00e0 induction des r\u00e9frig\u00e9rateurs ou des ventilateurs, les lampes \u00e0 courant alternatif ou les moteurs \u00e0 usage g\u00e9n\u00e9ral), on choisit g\u00e9n\u00e9ralement un triac (TRIAC).<\/span><\/p>

    Pour contr\u00f4ler les \u00e9quipements \u00e0 courant continu ou effectuer une rectification pr\u00e9cise et \u00e0 haute puissance du courant alternatif (comme les moteurs \u00e0 courant continu ou les redresseurs \u00e0 commande par phase), on utilise g\u00e9n\u00e9ralement un thyristor standard (SCR).<\/span><\/p>

    De plus, si vous ne disposez que de thyristors mais que vous souhaitez contr\u00f4ler une charge CA, vous pouvez connecter deux thyristors en parall\u00e8le invers\u00e9 pour obtenir la m\u00eame fonction qu'un commutateur bidirectionnel \u00e0 redresseur au silicium (SCR). Cette m\u00e9thode est particuli\u00e8rement adapt\u00e9e au contr\u00f4le des charges CA \u00e0 haute puissance.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Transformation\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    Les TRIAC et les thyristors sont deux types diff\u00e9rents de dispositifs \u00e0 semi-conducteurs avec des niveaux de puissance et des applications diff\u00e9rents.<\/span><\/p>

    On les trouve non seulement dans <\/span>relais \u00e0 semi-conducteurs<\/span><\/a><\/span> mais aussi dans d'autres appareils tels que <\/span>R\u00e9gulateurs de puissance SCR<\/span><\/a><\/span>, r\u00e9gulateurs de gradation, onduleurs, d\u00e9marreurs progressifs, etc.<\/span><\/p>

    Si vous recherchez des TRIAC tels que les thyristors des s\u00e9ries BTA16, BTA26, BTA41 ou MTC, MTA, MTK et MTX, vous pouvez envoyer une demande \u00e0 <\/span>shonxu@lorentzzi.com<\/span><\/a><\/span> Pour plus d'informations !<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

    AC solid-state relays are widely used in heating control systems, but do you know what the most important component inside an AC solid-state relay (used for AC or DC control) is? AC solid-state relays contain various components, such as resistors, capacitors, optocoupler isolation circuits, and control units. Among these components, the most important is the […]<\/p>\n","protected":false},"author":1,"featured_media":19638,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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