{"id":21697,"date":"2025-02-02T19:41:15","date_gmt":"2025-02-02T18:41:15","guid":{"rendered":"https:\/\/www.crowave.com\/blog\/?p=21697"},"modified":"2025-02-03T12:10:45","modified_gmt":"2025-02-03T11:10:45","slug":"ersa-r-200","status":"publish","type":"post","link":"https:\/\/www.crowave.com\/blog\/2025\/02\/02\/ersa-r-200\/","title":{"rendered":"Periodi\u010dki prekida\u010d Ersa R 200"},"content":{"rendered":"<p>Danas je nabavljen uklopno isklopni periodi\u010dki mre\u017eni prekida\u010d oznake ERSA R 200 iz 1965. godine. Ovo je ure\u0111aj porijeklom iz Njema\u010dke, no za tvrtku Ersa koja bi poslovala u tom razdoblju nismo na\u0161li nikakve podatke.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_01.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21698\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_01.jpg\" alt=\"\" width=\"1000\" height=\"905\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_01.jpg 1000w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_01-768x695.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_02.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21699\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_02.jpg\" alt=\"\" width=\"1300\" height=\"481\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_02.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_02-768x284.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_03.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21700\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_03.jpg\" alt=\"\" width=\"1300\" height=\"158\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_03.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_03-768x93.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><em><span style=\"color: #00ffff;\">Na ure\u0111aju nema puno oznaka. Poduze\u0107u ERSA nismo uspjeli u\u0107i u trag, otisak JAUTZ na bakelitnom poklopcu vjerojatno ozna\u010dava tvornicu gdje je izra\u0111eno bakelitno ku\u0107i\u0161te, na uti\u010dnici poznate njema\u010dke tvrtke Presto je otisnuta datumska oznaka za srpanj 1965. godine.<\/span><\/em><\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_06.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21703\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_06.jpg\" alt=\"\" width=\"1300\" height=\"779\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_06.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_06-768x460.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_07.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21704\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_07.jpg\" alt=\"\" width=\"1300\" height=\"577\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_07.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_07-768x341.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_08.gif\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21705\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_08.gif\" alt=\"\" width=\"883\" height=\"285\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_08.gif 883w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_08-768x248.gif 768w\" sizes=\"auto, (max-width: 883px) 100vw, 883px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Za ure\u0111aj Ersa R 200 nismo na\u0161li nikakve podatke, no prema elementima u ku\u0107i\u0161tu odmah je jasno da je ovo intervalni prekida\u010d na principu bimetalne sklopke.<\/p>\n<p>Bimetalni prekida\u010d je omotan grija\u0107om \u017eicom koja je preko dva otpornika (fiksni i reostat) spojena na napajanje tro\u0161ila. U po\u010detnom polo\u017eaju (hladno stanje) bimetalna sklopka je zatvorena i struja te\u010de kroz tro\u0161ilo kao i kroz grija\u010du \u017eicu koja po\u010dinje grijati bimetal. Nakon nekog vremena, bimetal se ugrije, savije i isklju\u010di elektri\u010dni kontakt. Slijedi ciklus hla\u0111enja bimetala sve dok se u jednom trenutku ne vrati u po\u010detni polo\u017eaj i ponovno zatvori sklopku. Reostatom se regulira struja kroz bimetalni grija\u010d, a time i njegovo vrijeme zagrijavanja te vrijeme reakcije samog bimetala.<\/p>\n<p>Ovakvi bimetalni periodi\u010dki prekida\u010di koristili su se za intervalno uklju\u010divanje brisa\u010da na automobilima. Danas ih mijenjaju elektroni\u010dki tajmeri. Napravili smo nekoliko testova trajanja intervala uklju\u010denosti i isklju\u010denosti kod razli\u010ditih polo\u017eaja reostata:<\/p>\n<ul>\n<li>pozicija 25% &#8211; period uklju\u010denosti kontakata traje 6 sekundi, a period isklju\u010denosti kontakata 20 sekundi<\/li>\n<li>pozicija 3 &#8211; period uklju\u010denosti kontakata traje 19 sekundi, a period isklju\u010denosti kontakata 16 sekundi<\/li>\n<li>pozicija 100% &#8211; period uklju\u010denosti kontakata traje 90 sekundi, a period isklju\u010denosti kontakata 17 sekundi<\/li>\n<\/ul>\n<p>Vidimo da je period isklju\u010denosti kontakata uvijek pribli\u017eno jednak (16-20 sekundi) jer je to zapravo vrijeme hla\u0111enja bimetala koje je uvijek pribli\u017eno jednako. Me\u0111utim, zna\u010dajno se mijenja period uklju\u010denosti kontakata (6-90 sekundi), a to je vrijeme kada se bimetal zagrijava. \u0160to je struja kroz grija\u010d manja to je zagrijavanje bimetala do odre\u0111ene temperature reakcije du\u017ee i obrnuto.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_04.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21701\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_04.jpg\" alt=\"\" width=\"1300\" height=\"462\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_04.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_04-768x273.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><em><span style=\"color: #00ffff;\">\u017di\u010dani otpornik sa kerami\u010dkim tijelom njema\u010dkog proizvo\u0111a\u010da elektroni\u010dkih komponenti Monette. Ova tvrtka je 1924. godine zapo\u010dela proizvodnju radio prijemnika i pripadaju\u0107ih elektroni\u010dkih komponenti. Spominje se u katalozima do sredine 1960-tih godina pod razli\u010ditim punim nazivima: \u201eMonette, Mock &amp; Nettebeck\u201c, \u201eMonette, Rundfunk-Apparatefabrik Mock &amp; Nettebeck\u201c, \u201eMock i Nettebeck, Radio-Apparate-Fabrik\u201c, \u201eMonette-Asbest-Draht GmbH\u201c, \u201eMonette Asbestdraht GmbH\u201c.<\/span><\/em><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_05.jpg\" rel=\"lightbox[21697]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-21702\" src=\"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_05.jpg\" alt=\"\" width=\"1300\" height=\"320\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_05.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_05-768x189.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><em><span style=\"color: #00ffff;\">Bimetalni prekida\u010d sa grija\u010dem je jedina aktivna prekida\u010dka komponenta u na\u0161em ure\u0111aju. Mo\u017ee se uo\u010diti grija\u010da \u017eica motana na izolatoru od liskuna preko bimetalne trake prekida\u010da.<\/span><\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Periodi\u010dki prekida\u010d Ersa R 200 je predvi\u0111en za mre\u017ena tro\u0161ila maksimalne snage 200 W (potro\u0161nja manja od 1 A) tako da ne znam koja bi bila njegova primjena u 1960-tim godinama. Mo\u017eda se mogao koristiti za kakve svjetlosne efekte paljenja i ga\u0161enja \u017earulja, za pogon pumpe kakve ukrasne fontane, za neke namjenske kuhinjske miksere, dozatore i sli\u010dno.<\/p>\n<p>Mogu\u0107e je da je ovaj ure\u0111aj proizvod poznate njema\u010dke tvrtke za proizvodnju elektri\u010dnih lemilica ERSA. Tvrtku je osnovao Ernst Sachs u Berlinu 1921. godine, a naziv je nastao od prva dva slova njegova imena i prezimena. Prvi proizvod Erse je bila lemilica od 200 W naziva H-1 i to je tako\u0111er bila prva u svijetu elektri\u010dna lemilica razvijena za masovnu proizvodnju. Kroz povijest tvrtke mo\u017ee se na\u0107i podatak da je razvoj mehani\u010dki temperaturno kontroliranih lemila po\u010deo 1971. godine, no nema konkretnog opisa toga patenta.<\/p>\n<p>Na\u0161 ure\u0111aj Ersa R 200 bi se svakako mogao koristiti kao temperaturna kontrola za elektri\u010dne lemilice do 200 W. Osim temperaturne kontrole, ure\u0111aj \u0161titi elektri\u010dnu lemilicu od pregrijavanja uslijed dugotrajnog kontinuiranog priklju\u010denja na napon. U proizvodnim pogonima lemilice su morale biti stalno zagrijane, odnosno spojene na mre\u017eni napon, a to se svakako lo\u0161e odra\u017eavalo na trajanje vrha i grija\u010da lemilice. Ovakav ure\u0111aj pak bi kontinuiranim periodi\u010dkim prekidanjem napajanja odr\u017eavao odre\u0111enu temperaturu lemilice (ovisno o pode\u0161enim ciklusima trajanja uklju\u010denja i isklju\u010denja) te sprje\u010davao nepotrebno pregrijavanje lemilice prilikom dugotrajnog kontinuiranog rada.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Danas je nabavljen uklopno isklopni periodi\u010dki mre\u017eni prekida\u010d oznake ERSA R 200 iz 1965. godine. Ovo je ure\u0111aj porijeklom iz Njema\u010dke, no za tvrtku Ersa koja bi poslovala u tom razdoblju nismo na\u0161li nikakve podatke. &nbsp; Na ure\u0111aju nema puno oznaka. Poduze\u0107u ERSA nismo uspjeli u\u0107i u trag, otisak JAUTZ na bakelitnom poklopcu vjerojatno ozna\u010dava [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":{"0":"post-21697","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sklopke","8":"czr-hentry"},"jetpack_featured_media_url":"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2025\/02\/ersa_r200_01.jpg","_links":{"self":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/21697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/comments?post=21697"}],"version-history":[{"count":2,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/21697\/revisions"}],"predecessor-version":[{"id":21708,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/21697\/revisions\/21708"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media\/21698"}],"wp:attachment":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media?parent=21697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/categories?post=21697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/tags?post=21697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}