{"id":159033,"date":"2021-07-21T09:15:23","date_gmt":"2021-07-21T07:15:23","guid":{"rendered":"https:\/\/bandelin.com\/?post_type=docs&#038;p=159033"},"modified":"2021-07-21T09:15:25","modified_gmt":"2021-07-21T07:15:25","password":"","slug":"generering-af-ultralyd","status":"publish","type":"docs","link":"https:\/\/bandelin.com\/da\/docs\/wissen\/erzeugung-von-ultraschall\/","title":{"rendered":"Generering af ultralyd"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p>En h\u00f8jfrekvensgenerator er n\u00f8dvendig for at generere ultralyd, som omdanner den normale netfrekvens p\u00e5 50-60 Hz til h\u00f8jfrekvente vibrationer p\u00e5 mellem 20 og 40 kHz. S\u00e5kaldte transducere, som f.eks. kan installeres under reng\u00f8ringsbadet, omdanner s\u00e5 disse elektromagnetiske svingninger til mekaniske vibrationer med samme frekvens. Enkelt sagt er transduceren ikke andet end et resonanssystem, der stimuleres til at vibrere af en passende energitilf\u00f8rsel. Kendte elektroakustiske transducere som telefoner eller h\u00f8jttalere, der fungerer i det h\u00f8rbare frekvensomr\u00e5de, svigter i ultralydsomr\u00e5det af forskellige \u00e5rsager. Den indirekte piezoelektriske effekt udnyttes derfor her. Hvis der tilf\u00f8res en elektrisk sp\u00e6nding til et piezoelektrisk materiale, reagerer materialet med en for\u00f8gelse i l\u00e6ngderetningen og med en forkortelse, n\u00e5r sp\u00e6ndingens polaritet vendes. P\u00e5 den m\u00e5de kan en elektrisk svingning, hvor sp\u00e6ndingens polaritet konstant vendes, omdannes til en vekslende mekanisk bev\u00e6gelse.\u00a0<br>Sintret keramik lavet af blyzirkonattitanat (PZT) bruges til produktion af h\u00f8jtydende ultralydsenheder, som har en effektivitet p\u00e5 over 90 procent.\u00a0<br>Ved lave ultralydsfrekvenser i 25 kHz-omr\u00e5det er reng\u00f8ringseffekten gennem kavitation meget effektiv. Kavitationsboblerne kan blive store (sp\u00e6ndings- og kompressionsfaser varer l\u00e6ngere) og indeholder derfor en masse energi eller frigiver den, n\u00e5r de imploderer. I relativt h\u00f8jere frekvensomr\u00e5der p\u00e5 40 kHz opn\u00e5s et felt af mindre, men talrige kavitationsbobler, og der opn\u00e5s en s\u00e6rlig sk\u00e5nsom reng\u00f8ring af f\u00f8lsomme dele.<br>Afh\u00e6ngigt af anvendelsesomr\u00e5det bruges der i dag frekvenser p\u00e5 25 kHz (grov reng\u00f8ring i maskinteknik) og 40 kHz (f\u00f8lsomme dele, f.eks. fra den medicinske, optiske og elektroniske sektor).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-scaled.jpg\"><img decoding=\"async\" src=\"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg\" alt=\"\" class=\"wp-image-159034\"\/><\/a><\/figure>\n\n\n\n<p>Yderligere oplysninger om generering af ultralyd ved hj\u00e6lp af sonotrodebaseret <strong>Ultralydshomogenisatorer, f.eks. til opsplitning af celler.<\/strong><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Zur Erzeugung von Ultraschall ben\u00f6tigt man einen Hochfrequenz-Generator, der die normale\u00a0Netzfrequenz von 50 &#8211; 60 Hz in hochfrequente Schwingungen zwischen 20 und 40 kHz\u00a0umwandelt. Sogenannte Schallwandler oder Schwinger, die z. B. unter dem Reinigungsbad angebracht\u00a0sein k\u00f6nnen, setzen dann diese elektromagnetischen Schwingungen in mechanische\u00a0Vibrationen gleicher Frequenz um. Einfach ausgedr\u00fcckt ist der Schallwandler nichts weiter als ein\u00a0Resonanzsystem, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"doc_category":[1926],"doc_tag":[],"class_list":["post-159033","docs","type-docs","status-publish","hentry","doc_category-wissen"],"acf":[],"year_month":"2026-11","word_count":265,"total_views":"142","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"J Bandelin","author_nicename":"jobandelin","author_url":"https:\/\/bandelin.com\/da\/author\/jobandelin\/"},"doc_category_info":[{"term_name":"Grundlagenwissen Kavitation","term_url":"https:\/\/bandelin.com\/da\/docs-category\/wissen\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Erzeugung von Ultraschall | BANDELIN electronic GmbH &amp; Co. KG<\/title>\n<meta name=\"description\" content=\"Informationen Sie sich \u00fcber Erzeugung von Ultraschall | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bandelin.com\/da\/dokumenter\/vide\/generering-af-ultralyd\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Erzeugung von Ultraschall | BANDELIN electronic GmbH &amp; Co. KG\" \/>\n<meta property=\"og:description\" content=\"Informationen Sie sich \u00fcber Erzeugung von Ultraschall | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bandelin.com\/da\/dokumenter\/vide\/generering-af-ultralyd\/\" \/>\n<meta property=\"og:site_name\" content=\"BANDELIN electronic GmbH &amp; Co. KG\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/de-de.facebook.com\/bandelin.electronic\/\" \/>\n<meta property=\"article:modified_time\" content=\"2021-07-21T07:15:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimeret l\u00e6setid\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/\",\"url\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/\",\"name\":\"Erzeugung von Ultraschall | BANDELIN electronic GmbH &amp; Co. KG\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/bandelin.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/Ultraschall_Schwinger-893x1024.jpg\",\"datePublished\":\"2021-07-21T07:15:23+00:00\",\"dateModified\":\"2021-07-21T07:15:25+00:00\",\"description\":\"Informationen Sie sich \u00fcber Erzeugung von Ultraschall | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/#breadcrumb\"},\"inLanguage\":\"da-DK\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"da-DK\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/#primaryimage\",\"url\":\"https:\\\/\\\/bandelin.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/Ultraschall_Schwinger-893x1024.jpg\",\"contentUrl\":\"https:\\\/\\\/bandelin.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/Ultraschall_Schwinger-893x1024.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/wissen\\\/erzeugung-von-ultraschall\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\\\/\\\/bandelin.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Docs\",\"item\":\"https:\\\/\\\/bandelin.com\\\/docs\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Erzeugung von Ultraschall\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/#website\",\"url\":\"https:\\\/\\\/bandelin.com\\\/\",\"name\":\"BANDELIN electronic GmbH & Co. KG\",\"description\":\"Ultraschall seit 1955\",\"publisher\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/bandelin.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"da-DK\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/#organization\",\"name\":\"BANDELIN electronic GmbH & Co. KG\",\"url\":\"https:\\\/\\\/bandelin.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"da-DK\",\"@id\":\"https:\\\/\\\/bandelin.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"BANDELIN electronic GmbH & Co. KG\"},\"image\":{\"@id\":\"https:\\\/\\\/bandelin.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/de-de.facebook.com\\\/bandelin.electronic\\\/\",\"https:\\\/\\\/www.instagram.com\\\/bandelin_ultrasonic\\\/?hl=de\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/bandelin-electronic-gmbh-amp-co-kg\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC5wTNrNxkwMmX-WzysQqw3g\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Generation af ultralyd | BANDELIN electronic GmbH &amp; Co. KG","description":"Find ud af mere om ultralydsgenerering | Ultralydsbade i h\u00f8j kvalitet til medicin og industri fra Bandelin Electronic siden 1955.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bandelin.com\/da\/dokumenter\/vide\/generering-af-ultralyd\/","og_locale":"da_DK","og_type":"article","og_title":"Erzeugung von Ultraschall | BANDELIN electronic GmbH &amp; Co. KG","og_description":"Informationen Sie sich \u00fcber Erzeugung von Ultraschall | Hochwertige Ultraschallb\u00e4der f\u00fcr Medizin und Industrie von Bandelin Electronic seit 1955.","og_url":"https:\/\/bandelin.com\/da\/dokumenter\/vide\/generering-af-ultralyd\/","og_site_name":"BANDELIN electronic GmbH &amp; Co. KG","article_publisher":"https:\/\/de-de.facebook.com\/bandelin.electronic\/","article_modified_time":"2021-07-21T07:15:25+00:00","og_image":[{"url":"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Estimeret l\u00e6setid":"2 minutter"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/","url":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/","name":"Generation af ultralyd | BANDELIN electronic GmbH &amp; Co. KG","isPartOf":{"@id":"https:\/\/bandelin.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/#primaryimage"},"image":{"@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/#primaryimage"},"thumbnailUrl":"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg","datePublished":"2021-07-21T07:15:23+00:00","dateModified":"2021-07-21T07:15:25+00:00","description":"Find ud af mere om ultralydsgenerering | Ultralydsbade i h\u00f8j kvalitet til medicin og industri fra Bandelin Electronic siden 1955.","breadcrumb":{"@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/#breadcrumb"},"inLanguage":"da-DK","potentialAction":[{"@type":"ReadAction","target":["https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/"]}]},{"@type":"ImageObject","inLanguage":"da-DK","@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/#primaryimage","url":"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg","contentUrl":"https:\/\/bandelin.com\/wp-content\/uploads\/2021\/07\/Ultraschall_Schwinger-893x1024.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/bandelin.com\/docs\/wissen\/erzeugung-von-ultraschall\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/bandelin.com\/"},{"@type":"ListItem","position":2,"name":"Docs","item":"https:\/\/bandelin.com\/docs\/"},{"@type":"ListItem","position":3,"name":"Erzeugung von Ultraschall"}]},{"@type":"WebSite","@id":"https:\/\/bandelin.com\/#website","url":"https:\/\/bandelin.com\/","name":"BANDELIN electronic GmbH &amp; Co. KG","description":"Ultralyd siden 1955","publisher":{"@id":"https:\/\/bandelin.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/bandelin.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"da-DK"},{"@type":"Organization","@id":"https:\/\/bandelin.com\/#organization","name":"BANDELIN electronic GmbH &amp; Co. KG","url":"https:\/\/bandelin.com\/","logo":{"@type":"ImageObject","inLanguage":"da-DK","@id":"https:\/\/bandelin.com\/#\/schema\/logo\/image\/","url":"","contentUrl":"","caption":"BANDELIN electronic GmbH & Co. KG"},"image":{"@id":"https:\/\/bandelin.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/de-de.facebook.com\/bandelin.electronic\/","https:\/\/www.instagram.com\/bandelin_ultrasonic\/?hl=de","https:\/\/www.linkedin.com\/company\/bandelin-electronic-gmbh-amp-co-kg","https:\/\/www.youtube.com\/channel\/UC5wTNrNxkwMmX-WzysQqw3g"]}]}},"_links":{"self":[{"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/docs\/159033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/users\/3"}],"version-history":[{"count":0,"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/docs\/159033\/revisions"}],"wp:attachment":[{"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/media?parent=159033"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/doc_category?post=159033"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/bandelin.com\/da\/wp-json\/wp\/v2\/doc_tag?post=159033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}