{"id":4631,"date":"2019-04-09T19:44:38","date_gmt":"2019-04-09T18:44:38","guid":{"rendered":"http:\/\/www.crowave.com\/blog\/?p=4631"},"modified":"2019-04-09T19:47:14","modified_gmt":"2019-04-09T18:47:14","slug":"konduktometar-iskra-ma-5961","status":"publish","type":"post","link":"https:\/\/www.crowave.com\/blog\/2019\/04\/09\/konduktometar-iskra-ma-5961\/","title":{"rendered":"Konduktometar Iskra MA 5961"},"content":{"rendered":"<p>Danas je nabavljen konduktometar slovenskog proizvo\u0111a\u010da Iskra pod oznakom MA 5961 iz 1970-tih godina. O konduktomerima smo ve\u0107 pisali u objavi <a href=\"http:\/\/www.crowave.com\/blog\/2016\/04\/08\/konduktometer-iev-ma-5960\/\" target=\"_blank\">KONDUKTOMETER IEV MA 5960<\/a>, a osim toga konduktometri MA 5960 i MA 5961 su shematski i funkcionalno potpuno identi\u010dni ure\u0111aji s tom razlikom \u0161to je MA 5961 ugra\u0111en u modernije ku\u0107i\u0161te, a monta\u017ea komponenti i veze su izvedene na tiskanoj plo\u010dici. Stoga ovdje ne\u0107emo ponavljati princip rada i funkcionalne sklopove konduktometra nego idemo pogledati koje su razlike u monta\u017ei i dizajnu sklopovlja.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4633\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02-975x1024.jpg\" alt=\"konduktometer_ma5961_iskra_02\" width=\"975\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02-975x1024.jpg 975w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02-286x300.jpg 286w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02-768x806.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_02.jpg 1597w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4634\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03-1024x730.jpg\" alt=\"konduktometer_ma5961_iskra_03\" width=\"1024\" height=\"730\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03-1024x730.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03-300x214.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03-768x547.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_03.jpg 1786w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_04.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4635\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_04.jpg\" alt=\"konduktometer_ma5961_iskra_04\" width=\"796\" height=\"338\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_04.jpg 796w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_04-300x127.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_04-768x326.jpg 768w\" sizes=\"auto, (max-width: 796px) 100vw, 796px\" \/><\/a><\/p>\n<p>Nabavili smo tri istovjetna primjerka konduktometra MA 5961 pa ih mo\u017eemo usporediti i me\u0111usobno. \u00a0Uo\u010davamo da su natpisi na engleskom jeziku pa se mo\u017ee pretpostaviti da je ovaj ure\u0111aj bio namijenjen i inozemnom tr\u017ei\u0161tu. Razlike koje smo uo\u010dili izme\u0111u ova tri primjerka odnose se samo na tip pojedinih ugra\u0111enih komponenti. Tako raniji primjerci sa serijskim brojem 6xx u mjernom mostu imaju ugra\u0111en precizni 10 k\u2126 potenciometar Iskra ili IEV oznake PVG-001, dok se u kasnijim primjercima serije 7xx nalazi fizi\u010dki potpuno razli\u010dit potenciometar njema\u010dke tvrtke Megatron. Tako\u0111er, u kasnije modele ugra\u0111eni su ne\u0161to noviji tipovi punovalnih ispravlja\u010da.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_01.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4632\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_01-1024x383.jpg\" alt=\"konduktometer_ma5961_iskra_01\" width=\"1024\" height=\"383\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_01-1024x383.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_01-300x112.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_01-768x288.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_05.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4636\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_05-1024x396.jpg\" alt=\"konduktometer_ma5961_iskra_05\" width=\"1024\" height=\"396\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_05-1024x396.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_05-300x116.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_05-768x297.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>U usporedi s prethodnikom MA 5960, iako je elektri\u010dna shema ostala ista, od komponenti su zadr\u017eani samo isti mre\u017eni transformator, VF transformator, VF prigu\u0161nica i elektronske cijevi. Sve drugo je zamijenjeno novijim tipovima komponenti, tako\u0111er su sve komponente sada smje\u0161tene na tiskanu plo\u010dicu, a ku\u0107i\u0161te ure\u0111aja u potpunosti redizajnirano.<\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4637\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06-1019x1024.jpg\" alt=\"konduktometer_ma5961_iskra_06\" width=\"1019\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06-1019x1024.jpg 1019w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06-150x150.jpg 150w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06-298x300.jpg 298w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06-768x772.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_06.jpg 1579w\" sizes=\"auto, (max-width: 1019px) 100vw, 1019px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_07.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4638\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_07-1024x768.jpg\" alt=\"konduktometer_ma5961_iskra_07\" width=\"1024\" height=\"768\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_07-1024x768.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_07-300x225.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_07-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4639\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08-871x1024.jpg\" alt=\"konduktometer_ma5961_iskra_08\" width=\"871\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08-871x1024.jpg 871w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08-255x300.jpg 255w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08-768x903.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_08.jpg 1728w\" sizes=\"auto, (max-width: 871px) 100vw, 871px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4640\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09-1024x725.jpg\" alt=\"konduktometer_ma5961_iskra_09\" width=\"1024\" height=\"725\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09-1024x725.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09-300x212.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09-768x544.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_10.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4641\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_10-1024x532.jpg\" alt=\"konduktometer_ma5961_iskra_10\" width=\"1024\" height=\"532\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_10-1024x532.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_10-300x156.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_10-768x399.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_11.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4642\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_11-768x1024.jpg\" alt=\"konduktometer_ma5961_iskra_11\" width=\"768\" height=\"1024\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_11-768x1024.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_11-225x300.jpg 225w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_11.jpg 1728w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12.jpg\" rel=\"lightbox[4631]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-4643\" src=\"http:\/\/www.crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12-1024x1009.jpg\" alt=\"konduktometer_ma5961_iskra_12\" width=\"1024\" height=\"1009\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12-1024x1009.jpg 1024w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12-300x296.jpg 300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12-768x757.jpg 768w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_12.jpg 1754w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Konduktometre MA 5961 testirali smo na jednak na\u010din kao i <a href=\"http:\/\/www.crowave.com\/blog\/2016\/04\/08\/konduktometer-iev-ma-5960\/\" target=\"_blank\">Konduktometre MA 5960<\/a>, pomo\u0107u <a href=\"http:\/\/www.crowave.com\/blog\/2019\/01\/03\/otporne-dekade-ma2100-ma2102-i-ma2110-iskra-iev\/\" target=\"_blank\">Otpornih dekada MA2100, MA2102 i MA2110 (ISKRA, IEV)<\/a>. Pri tome je o\u010dekivano na stezaljkama Rx izmjeren napon cca 4,7 V frekvencije ne\u0161to manje od 1 kHz. Na testu su se svi ure\u0111aji pokazali ispravnima.<\/p>\n<p>Do sada smo na nekoliko primjera vidjeli kako je Iskra na prijelazu iz 1960-tih u 1970-te godine napravila potpuni redizajn ku\u0107i\u0161ta svojih laboratorijskih mjernih instrumenata (iako je elektri\u010dna shema uglavnom ostala ista), vjerojatno slijede\u0107i nove tokove proizvodnje i potrebe za prilagodbom na inostrana tr\u017ei\u0161ta. No mora se priznati da s dana\u0161njeg gledi\u0161ta (u nekoj kolekciji) daleko bolje izgledaju stara ku\u0107i\u0161ta koja karakterizira sjajna crna prednja plo\u010da i siva boja s efektom za ostatak ku\u0107i\u0161ta, gumbi u obliku &#8220;koko\u0161jeg kljuna&#8221;, markantne indikacijske lampice i drugi detalji koji ure\u0111aj jednostavno \u010dine ljep\u0161im, mo\u0107nijim, vrednijim i po\u017eeljnijim za u\u017eivanje \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Danas je nabavljen konduktometar slovenskog proizvo\u0111a\u010da Iskra pod oznakom MA 5961 iz 1970-tih godina. O konduktomerima smo ve\u0107 pisali u objavi KONDUKTOMETER IEV MA 5960, a osim toga konduktometri MA 5960 i MA 5961 su shematski i funkcionalno potpuno identi\u010dni ure\u0111aji s tom razlikom \u0161to je MA 5961 ugra\u0111en u modernije ku\u0107i\u0161te, a monta\u017ea komponenti [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,62,15],"tags":[],"class_list":{"0":"post-4631","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-cijevni","8":"category-labnaprave","9":"category-mjerni","10":"czr-hentry"},"jetpack_featured_media_url":"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2019\/04\/konduktometer_ma5961_iskra_09.jpg","_links":{"self":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4631","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=4631"}],"version-history":[{"count":2,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4631\/revisions"}],"predecessor-version":[{"id":4645,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/4631\/revisions\/4645"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media\/4640"}],"wp:attachment":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media?parent=4631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/categories?post=4631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/tags?post=4631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}