--- title: A Guide To Using Triacs For Switching AC | daily.dev description: Triacs offer a solid-state alternative to relays for switching AC loads from microcontrollers. Unlike standard transistors that only conduct in one direction,... canonical: https://daily.dev/posts/a-guide-to-using-triacs-for-switching-ac-ygo591iwq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Guide To Using Triacs For Switching AC | daily.dev og:description: Triacs offer a solid-state alternative to relays for switching AC loads from microcontrollers. Unlike standard transistors that only conduct in one direction,... og:url: https://daily.dev/posts/a-guide-to-using-triacs-for-switching-ac-ygo591iwq og:image: https://api.daily.dev/og/posts/YgO591iwQ.png og:image:alt: A Guide To Using Triacs For Switching AC og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A Guide To Using Triacs For Switching AC **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary Triacs offer a solid-state alternative to relays for switching AC loads from microcontrollers. Unlike standard transistors that only conduct in one direction, triacs provide bi-directional conductivity essential for AC switching. The guide covers triac theory, gate triggering mechanics, and practical implementation in a 24VAC irrigation system. Triacs excel when silent operation, precise timing, or high cycle counts are needed compared to mechanical relays. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Converting AC Irrigation Valves To DC Operation](https://daily.dev/posts/converting-ac-irrigation-valves-to-dc-operation-agjaygcey) · Hackaday · 0 upvotes · 0 comments - [I replaced my smart bulbs with smart relays and saved my family from home automation fatigue](https://daily.dev/posts/i-replaced-my-smart-bulbs-with-smart-relays-and-saved-my-family-from-home-automation-fatigue-jccr3idzu) · XDA Developers · 0 upvotes · 0 comments - [Energizing a vacuum-tube flip-flop module from a 1948 IBM system](https://daily.dev/posts/energizing-a-vacuum-tube-flip-flop-module-from-a-1948-ibm-system-srore98wj) · Hacker News · 0 upvotes · 0 comments - [USB-C Adapted For Legacy Sprinkler Systems](https://daily.dev/posts/usb-c-adapted-for-legacy-sprinkler-systems-javliktf1) · Hackaday · 1 upvotes · 0 comments - [Eggtronic, Renesas Unveil GaN-Based Microinverter Reference Design](https://daily.dev/posts/eggtronic-renesas-unveil-gan-based-microinverter-reference-design-parttkqw3) · Embedded.com · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/a-guide-to-using-triacs-for-switching-ac-ygo591iwq) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A Guide To Using Triacs For Switching AC","url":"https://daily.dev/posts/a-guide-to-using-triacs-for-switching-ac-ygo591iwq","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-guide-to-using-triacs-for-switching-ac-ygo591iwq"},"datePublished":"2026-01-19T03:12:52.787Z","dateModified":"2026-01-19T03:13:13.910Z","description":"Triacs offer a solid-state alternative to relays for switching AC loads from microcontrollers. 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