{"id":802,"date":"2025-10-09T11:21:30","date_gmt":"2025-10-09T11:21:30","guid":{"rendered":"https:\/\/irodriguez.inscastellbisbal.net\/?p=802"},"modified":"2026-04-21T06:28:59","modified_gmt":"2026-04-21T06:28:59","slug":"fases-electricas-fuentes-alimentacion","status":"publish","type":"post","link":"https:\/\/irodriguez.inscastellbisbal.net\/?p=802","title":{"rendered":"Fases electricas fuentes alimentacion"},"content":{"rendered":"\n

Aquesta \u00e9s la funci\u00f3 principal d\u2019una font d\u2019alimentaci\u00f3:<\/p>\n\n\n\n

1- Transformador:<\/strong> Serveix per disminuir la tensi\u00f3 de la xarxa el\u00e8ctrica de corrent altern (AC). Per exemple, transforma 230 V a un nivell m\u00e9s baix i adequat, com 12 V o 15 V, abans que es pugui convertir en corrent continu (DC).<\/p>\n\n\n\n

2- Rectificador (de AC a DC):<\/strong> Utilitza d\u00edodes rectificadors (normalment en una configuraci\u00f3 anomenada pont de Graetz) per transformar la corrent alterna, que canvia de direcci\u00f3 constantment, en corrent continu. El resultat encara no \u00e9s un corrent continu pur, sin\u00f3 un senyal amb pics.<\/p>\n\n\n\n

3- Filtrat (suavitzaci\u00f3 del senyal):<\/strong> S\u2019usa un condensador o un filtre LC per aplanar el senyal DC pulsant que prov\u00e9 del rectificador. Aix\u00f2 redueix les oscil\u00b7lacions o ondulacions de la tensi\u00f3, aproximant-la a una tensi\u00f3 cont\u00ednua m\u00e9s estable.<\/p>\n\n\n\n

4- Regulaci\u00f3\/Estabilitzaci\u00f3 (tensi\u00f3 constant):<\/strong> Generalment mitjan\u00e7ant un circuit integrat o transistor, aquesta etapa mant\u00e9 la tensi\u00f3 de sortida estable i constant, independentment de canvis en la tensi\u00f3 d\u2019entrada o variacions en la c\u00e0rrega connectada. Aix\u00ed s\u2019obt\u00e9 la tensi\u00f3 final precisa que necessita l\u2019equip.<\/p>\n","protected":false},"excerpt":{"rendered":"

Aquesta \u00e9s la funci\u00f3 principal d\u2019una font d\u2019alimentaci\u00f3: 1- Transformador: Serveix per disminuir la tensi\u00f3 de la xarxa el\u00e8ctrica de corrent altern (AC). Per exemple, …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[27],"class_list":["post-802","post","type-post","status-publish","format-standard","hentry","category-apuntes-clasee","tag-apuntes"],"yoast_head":"\nFases electricas fuentes alimentacion - Ivan Rodriguez Jimenez<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/irodriguez.inscastellbisbal.net\/?p=802\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fases electricas fuentes alimentacion - Ivan Rodriguez Jimenez\" \/>\n<meta property=\"og:description\" content=\"Aquesta \u00e9s la funci\u00f3 principal d\u2019una font d\u2019alimentaci\u00f3: 1- Transformador: Serveix per disminuir la tensi\u00f3 de la xarxa el\u00e8ctrica de corrent altern (AC). 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