{"id":1132,"date":"2012-05-16T20:28:37","date_gmt":"2012-05-16T18:28:37","guid":{"rendered":"http:\/\/www.jaksch.se\/?p=1132"},"modified":"2013-08-26T12:42:48","modified_gmt":"2013-08-26T10:42:48","slug":"varvraknare","status":"publish","type":"post","link":"https:\/\/www.jaksch.se\/?p=1132","title":{"rendered":"Varvr\u00e4knare"},"content":{"rendered":"

I dag konverterade jag varvr\u00e4knaren till minus-jord och slutmonterade instrumentbr\u00e4dan.<\/p>\n

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\nVrid loss kromringen.<\/p>\n

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\nSkruva loss givarkabeln (denna ska sedan matas \u00e5t andra h\u00e5llet).<\/p>\n

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\nLossa de tv\u00e5 skruvarna som h\u00e5ller fast m\u00e4taren i skalet.<\/p>\n

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\nDessa tv\u00e5 anslutningar ska kastas om (bilden visar plusjordad).<\/p>\n

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\nNu \u00e4r den konverterad till minusjord. Dvs. den gr\u00f6na sladden\u00a0och motst\u00e5ndet har bytt anslutning.<\/p>\n

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\nF\u00f6r att testa det hela s\u00e5 kan man mata m\u00e4taren med 12V (minus till k\u00e5pan och plus till anslutningsstiftet). Sedan tar man en batteriladdare och k\u00f6r str\u00f6m genom givarsladden.
\nM\u00e4taren reagerar d\u00e5 p\u00e5 den d\u00e5ligt\u00a0filtrerade sp\u00e4nningen som h\u00e5ller 100Hz och d\u00e5\u00a0ska ge 3000 varv.<\/p>\n

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\nGenom att skruva p\u00e5\u00a0potentiometern p\u00e5 baksidan kan man sedan kalibrera m\u00e4taren.<\/p>\n

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\nEfter montering s\u00e5 kopplade jag\u00a0samman alla instrument till en gemensam jordning (bara f\u00f6r att b\u00e4ttra p\u00e5\u00a0den d\u00e5liga jordning som finns).
\nJag m\u00e5lade inte baksidan svart, t\u00e4nkte att den ljusa f\u00e4rgen g\u00f6r det lite l\u00e4ttare och ljusare\u00a0om man n\u00e5gon g\u00e5ng beh\u00f6ver h\u00e4nga i kn\u00e4vecken och rota bakom panelen.<\/p>\n

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\nF\u00e4rdiga resultatet, nu saknas bara brytaren till overdriven.<\/p>\n","protected":false},"excerpt":{"rendered":"

I dag konverterade jag varvr\u00e4knaren till minus-jord och slutmonterade instrumentbr\u00e4dan. Vrid loss kromringen. Skruva loss givarkabeln (denna ska sedan matas \u00e5t andra h\u00e5llet). Lossa de tv\u00e5 skruvarna som h\u00e5ller fast m\u00e4taren i skalet. Dessa tv\u00e5 anslutningar ska kastas om (bilden visar plusjordad). Nu \u00e4r den konverterad till minusjord. Dvs. den gr\u00f6na sladden\u00a0och motst\u00e5ndet har bytt … Forts\u00e4tt l\u00e4sa \u201dVarvr\u00e4knare\u201d<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[32,36],"class_list":["post-1132","post","type-post","status-publish","format-standard","hentry","category-mgb-roadster","tag-el","tag-instrumentering"],"_links":{"self":[{"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/posts\/1132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1132"}],"version-history":[{"count":4,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/posts\/1132\/revisions"}],"predecessor-version":[{"id":2097,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=\/wp\/v2\/posts\/1132\/revisions\/2097"}],"wp:attachment":[{"href":"https:\/\/www.jaksch.se\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jaksch.se\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}