[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-562989-en":3,"detail-sidebar-cat-0-en-105":30,"doc-seo-562989-105":80},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":11,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},562989,962090883892,"pixelkiddo","https://ap-avatar.wpscdn.com/avatar/e00115db34f3e0f11b?x-image-process=image/resize,m_fixed,w_180,h_180&k=1790152879550218658",6,"Technology","EZ81 - Double Anode Rectifying Tube - Technical Data Sheet","This technical documentation provides a comprehensive overview of the EZ81, a double anode high-vacuum rectifying tube manufactured by Philips. The document details the component's electrical specifications, including heater voltage and current, operating characteristics for both capacitor and choke input filter configurations, and critical limiting values for safe design application. It contains schematic pin-out diagrams, physical dimension metrics, and performance graphs indicating anode current versus voltage. As a professional electronic component reference, this manual serves as an essential guide for engineers and technicians involved in circuit design, maintenance, or replacement of vacuum tube power supply systems, specifically outlining parameters for peak inverse voltage, maximum surge current, and cathode-to-heater voltage thresholds to ensure optimal operational reliability and hardware protection within various electronic applications.","# DOUBLE ANODE RECTIFYING TUBE\n\nDouble anode high vacuum rectifying tube.  \n\n| QUICK REFERENCE DATA   |\n| --- |\n| 2x450 VRMS  \u003Cbr>Vtr  \u003Cbr>Transformer voltage  \u003Cbr>100 mA  \u003Cbr>Io  \u003Cbr>D.C.current   |\n\nHEATING:Indirect by A.C.;parallel supplyHeater voltageHeater current  \n## DIMENSIONS AND CONNECTIONS\n\nBase:Noval  \n| January 1970   |  | 1   |\n| --- | --- | --- |\n\n\n| Vf   | 6.3    | V   |\n| --- | --- | --- |\n| If   | 1    | A   |\n\nDimensions in mm  \nEZ81  \n## OPERATING CHARACTERISTICS\n\nTransformer voltageVtr2x250  2x350  2x450 VRMS  \nD.C.output voltageV₀245    352    497 V  \nD.C.currentI。160    150    100 mAProtecting resistanceRt2x150  2x230  2x310 ΩInput capacitor of smoothing filterCfilt505050 μF  \nAs two-phase half-wave rectifier with choke input filter  \nTransformer voltageVtr2x250  2x350  2x450 VRMS  \nD.C.output voltageV。199    288    378 V  \nD.C.currentI。180    180    150 mAChokeL1010     10 H  \n## LIMITING VALUES(Design centre rating system)\n\nAnode voltage,peak inverse  \nD.C.current  \nTransformer voltage  \nAnode current,peak  \nsurge  \nCathode to heater voltage,k posInput capacitor of smoothing filterProtecting resistanceChoke  \n2  \n\n|  |  |  |\n| --- | --- | --- |\n\nAs two-phase half-wave rectifier with capacitor input filter See page 4 upper fig.  \nSee page 4 lower fig.  \nVainvpmax.  1300 VI₀See page 3Vtrlower figureIapmax.   500 mAIasurgemax.   1.8 AVkfmax.  500 VCfiltmax.50 μFRt min.  See page 5L min.See page 4 lower fig.  \n\n|  | MAINTENANCE TYPE   |  |\n| --- | --- | --- |\n\nJanuary 1970  \nJanuary1970  \nEN81  \n4r(4ms)  \nJanuary 1970  \nMAINTENANCE TYPE  \nEN81  \n|  |  | 5   |\n| --- | --- | --- |\n\nJanuary 1970  \n5  \n6  \nPHILIPS  \nData handbookElectroniccomponentsand materials  \nEZ81  \nsheet  \nFP  \ndate  \n1970.01  \n1970.01  \n1970.01  \n1970.01  \n1970.01  \n1999.03.19","cbCaikrF4OyDfTVw","https://ap.wps.com/l/cbCaikrF4OyDfTVw","pdf",183724,4,1,"English","en",105,"# Dimensions and Connections\n## Operating Characteristics\n## Limiting Values","[{\"question\":\"What are the primary electrical specifications for the EZ81 heater?\",\"answer\":\"The EZ81 operates with a heater voltage (Vf) of 6.3 V and a heater current (If) of 1 A.\"},{\"question\":\"What is the maximum peak inverse voltage (Vainv) for the EZ81?\",\"answer\":\"The maximum peak inverse voltage (Vainv p) for the EZ81 is 1300 V.\"},{\"question\":\"How does the D.C. output voltage vary with transformer voltage in a capacitor input filter configuration?\",\"answer\":\"With a capacitor input filter, the D.C. output voltage varies from 245 V at a transformer voltage of 2x250 VRMS to 497 V at a transformer voltage of 2x450 VRMS.\"}]","EZ81 - Double Anode Rectifying Tube - Technical Data Sheet | PDF",1791810279,15,{"code":4,"msg":5,"data":31},[32,37,42,46,51,54,59,64,69,72,76],{"id":21,"doc_module":4,"doc_module_name":33,"category_name":34,"show_sort_weight":35,"slug":36},"Document","Story & Novel",90,"story-novel",{"id":38,"doc_module":4,"doc_module_name":33,"category_name":39,"show_sort_weight":40,"slug":41},2,"Literature",80,"literature",{"id":20,"doc_module":4,"doc_module_name":33,"category_name":43,"show_sort_weight":44,"slug":45},"Exam",70,"exam",{"id":47,"doc_module":4,"doc_module_name":33,"category_name":48,"show_sort_weight":49,"slug":50},5,"Comic",60,"comic",{"id":11,"doc_module":4,"doc_module_name":33,"category_name":12,"show_sort_weight":52,"slug":53},50,"technology",{"id":55,"doc_module":4,"doc_module_name":33,"category_name":56,"show_sort_weight":57,"slug":58},7,"Healthcare",40,"healthcare",{"id":60,"doc_module":4,"doc_module_name":33,"category_name":61,"show_sort_weight":62,"slug":63},8,"Research & Report",30,"research-report",{"id":65,"doc_module":4,"doc_module_name":33,"category_name":66,"show_sort_weight":67,"slug":68},9,"Religion & Spirituality",20,"religion-spirituality",{"id":67,"doc_module":4,"doc_module_name":33,"category_name":70,"show_sort_weight":67,"slug":71},"World Cup","world-cup",{"id":73,"doc_module":4,"doc_module_name":33,"category_name":74,"show_sort_weight":73,"slug":75},10,"Lifestyle","lifestyle",{"id":77,"doc_module":4,"doc_module_name":33,"category_name":78,"show_sort_weight":47,"slug":79},19,"General","general",{"code":4,"msg":81,"data":82},"ok",{"site_id":24,"language":23,"slug":83,"title":13,"keywords":84,"description":14,"schema_data":85,"social_meta":139,"head_meta":141,"extra_data":143,"updated_unix":144},"ez81-double-anode-rectifying-tube-technical-data-sheet","",{"@graph":86,"@context":138},[87,101,121],{"@type":88,"itemListElement":89},"BreadcrumbList",[90,94,96,99],{"item":91,"name":92,"@type":93,"position":21},"https://docshare.wps.com","Home","ListItem",{"item":95,"name":33,"@type":93,"position":38},"https://docshare.wps.com/document/",{"item":97,"name":12,"@type":93,"position":98},"https://docshare.wps.com/document/technology/",3,{"item":100,"name":13,"@type":93,"position":20},"https://docshare.wps.com/document/ez81-double-anode-rectifying-tube-technical-data-sheet/562989/",{"url":100,"name":13,"@type":102,"image":103,"author":108,"headline":13,"publisher":110,"fileFormat":113,"inLanguage":23,"description":14,"dateModified":114,"datePublished":115,"encodingFormat":113,"isAccessibleForFree":116,"interactionStatistic":117},"DigitalDocument",{"url":104,"@type":105,"width":106,"height":107},"https://docshare.wps.com/thumbnails/ez81-double-anode-rectifying-tube-technical-data-sheet/562989.png","ImageObject",300,407,{"name":9,"@type":109},"Person",{"url":91,"name":111,"@type":112},"DocShare","Organization","application/pdf","2026-10-13","2026-10-12",true,{"@type":118,"interactionType":119,"userInteractionCount":20},"InteractionCounter",{"@type":120},"ViewAction",{"@type":122,"mainEntity":123},"FAQPage",[124,130,134],{"name":125,"@type":126,"acceptedAnswer":127},"What are the primary electrical specifications for the EZ81 heater?","Question",{"text":128,"@type":129},"The EZ81 operates with a heater voltage (Vf) of 6.3 V and a heater current (If) of 1 A.","Answer",{"name":131,"@type":126,"acceptedAnswer":132},"What is the maximum peak inverse voltage (Vainv) for the EZ81?",{"text":133,"@type":129},"The maximum peak inverse voltage (Vainv p) for the EZ81 is 1300 V.",{"name":135,"@type":126,"acceptedAnswer":136},"How does the D.C. output voltage vary with transformer voltage in a capacitor input filter configuration?",{"text":137,"@type":129},"With a capacitor input filter, the D.C. output voltage varies from 245 V at a transformer voltage of 2x250 VRMS to 497 V at a transformer voltage of 2x450 VRMS.","https://schema.org",{"og:url":100,"og:type":140,"og:title":13,"og:site_name":111,"og:description":14},"article",{"robots":142,"canonical":100},"index,follow",{"doc_id":7,"site_id":24},1791850818]