[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-562832-105":59,"doc-detail-562832-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","toroidal-transformers-for-universal-application","Toroidal Transformers for Universal Application","","TALEMA TALEMA Toroidal Transformers catalog section explains encapsulated and open-wound transformer ranges (such as 1VA-160VA and 1VA-7.5kVA) and how standard configurations are tailored to customer specifications. It describes the toroidal core’s material efficiency, symmetric winding layout, low iron losses, reduced magnetizing current, and near-elimination of transformer hum. Mounting options, production programs, safety delivery practices, efficiency benefits, and international quality approvals (e.g., ISO-9001 and related factory certifications) are presented alongside application areas like audio, instrumentation, medical equipment, and industrial control.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/toroidal-transformers-for-universal-application/562832/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/toroidal-transformers-for-universal-application/562832.png","ImageObject",300,407,{"name":92,"@type":93},"ahduag","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-13","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What makes TALEMA toroidal transformers suitable for compact power supplies?","Question",{"text":112,"@type":113},"The design enables small size and low weight (about half of conventional transformers), with extremely low noise and low magnetic interference. The near-ideal physical construction supports excellent performance for compact power supply needs.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do toroidal cores help reduce transformer hum?",{"text":117,"@type":113},"Toroidal transformers have no air gaps, so there are no loose sheets that can vibrate. High-quality grain-orientated silicon alloy steel results in very low magnetostriction, almost completely eliminating the disturbing hum found in common transformer types.",{"name":119,"@type":110,"acceptedAnswer":120},"What safety and testing information is provided for stock transformers?",{"text":121,"@type":113},"Stock transformers from 15VA to 1kVA are delivered with ENECKEMA marking according to EN61558 protection class II and are tested with 4500VAC between primary and secondary windings. Special types can be made as safety transformers according to EN61558.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},562832,1791884653,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":41},3985747870414,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","• Encapsulated PC Transformers 1VA-160VA  \n• Power Transformers 1VA-7.5kVA  \n• Encapsulated Styles 1VA-500VA  \n• Special Mounting Configurations  \nIn Standard Configurations and to Customer Specifications  \nSECT ION 1  \nToroidal Transformers for Universal Application  \nTALEMA PROFILE  \nThe TALEMA International Group of companies began in 1975 with the formation of Talema Elektronik GmbH in Munich, Germany. Five years later, in 1980 Nuvotem Teo started manufacturing in Ireland. In 1988 Talema began production in India and expanded into the Czech Republic with the formation [of TALEMA spol s. r.o. in 1992](of TALEMA spol s. r.o. in 1992) .  \nToday the TALEMA International Group, with three manufacturing facilities and over 1000 employees in Europe and the Far East, is a world leader in the manufacture of toroidal transformers and related magnetic components. The vast majority of the output, around 85%, is of custom built products although a comprehensive range of standard devices is also available.  \nNote: All products manufactured by the Talema Group are RoHS compliant.  \nApplication  \nTALEMA Toroidal Transformers meet modern day requirements for a small size, low magnetic interference field transformer. Featuring a nearly ideal physical construction, the design engineer can expect excellent performance. Small size and weight (approximately 50% of conventional transformers), extremely low noise and low magnetic interference field make the toroidal transformer ideal for compact power supplies. Modern production techniques make it possible to produce toroidal transformers at practically the same prices as conventional transformers making them ideal for a wide range of applications including:  \n• professional audio equipment  \n• computers and peripherals  \n• video monitors  \n• motor controls  \n• compact power supplies  \n• medical equipment  \n• instrumentation  \n• office machines  \n• industrial control equipment  \n• low voltage lighting  \nVolume and weight  \nThe toroidal core has the optimal shape for producing a transformer with the minimum of material. Because the quality of the core is such a vital consideration for sensitive applications, TALEMA has invested heavily to provide extensive core manufacturing, annealing and testing facilities.  \nAll windings are symmetrically spread over the entire core which makes the wire length very short. A higher flux density is possible as the magnetic flux is in the same direction as the rolling direction of the grain orientated core allowing significant savings of volume and weight. A higher current density can flow through the wire as the whole surface of the toroidal core allows efficient cooling of the copper windings.  \nThe iron losses of the toroidal core are very small, typically 1. 1W/kg at 1.7 Tesla and 50Hz, giving very small magnetizing current, which contributes to the excellent temperature rating of the toroidal transformer.  \nTransformer hum  \nBecause there are no air gaps, there are no loose sheets which can vibrate. In addition, the high quality of the grain orientated silicone alloyed electric steel makes the magnetostriction very low, thus allowing the disturbing hum found in most common types of transformers to be almost completely eliminated.  \nMounting details  \nFor sizes up to 1000VA, a low cost assembly can be made with a centering washer and a center screw or bolt. Transformers in the range of 15VA through 500VA can also be potted in standard Polyamid housings. All transformers can also be center potted-either with a center hole or with a threaded insert.  \nProduction program  \nStandard Distribution:  \nOpen wound, Standard and Mini; Encapsulated; Print & DIN Rail Transformers- 230V primary, with ENEC KEMA-KEUR marking (see page 8);  \nCustomer standards:  \nOpen wound, Encapsulated, Print, DIN Rail, a wide range of secondary voltages and mounting styles (see page 6);  \nSpecials:  \nper customer specification (see page 5)  \n• Power: 1.6VA-7 .5kVA per phase  \n• Special siz","cbCaiqydjZ3rfoCl","https://ap.wps.com/l/cbCaiqydjZ3rfoCl","pdf",420204,12,"English","# TALEMA Profile\n# Application\n# Volume and Weight\n# Transformer Hum\n# Mounting Details\n# Production Program\n## Standard Distribution\n## Customer Standards\n## Specials\n# Safety\n# Efficiency\n# Delivery\n# Internationally Recognized Quality Systems and Approvals","[{\"question\":\"What makes TALEMA toroidal transformers suitable for compact power supplies?\",\"answer\":\"The design enables small size and low weight (about half of conventional transformers), with extremely low noise and low magnetic interference. The near-ideal physical construction supports excellent performance for compact power supply needs.\"},{\"question\":\"How do toroidal cores help reduce transformer hum?\",\"answer\":\"Toroidal transformers have no air gaps, so there are no loose sheets that can vibrate. High-quality grain-orientated silicon alloy steel results in very low magnetostriction, almost completely eliminating the disturbing hum found in common transformer types.\"},{\"question\":\"What safety and testing information is provided for stock transformers?\",\"answer\":\"Stock transformers from 15VA to 1kVA are delivered with ENECKEMA marking according to EN61558 protection class II and are tested with 4500VAC between primary and secondary windings. Special types can be made as safety transformers according to EN61558.\"}]","Toroidal Transformers for Universal Application | PDF",1791809834]