{"id":3236,"date":"2017-03-03T09:12:49","date_gmt":"2017-03-03T08:12:49","guid":{"rendered":"http:\/\/museo.freaknet.org\/?p=3236"},"modified":"2025-08-29T15:40:33","modified_gmt":"2025-08-29T13:40:33","slug":"programmatore-eprom-top2004-semplice-modifica","status":"publish","type":"post","link":"https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/","title":{"rendered":"Programmatore di EPROM TOP2004: una semplice modifica!"},"content":{"rendered":"<p><a href=\"http:\/\/museo.freaknet.org\/it\/riparazione-programmatore-eprom-cinese-top2004\/\">Qualche articolo fa<\/a> parlavamo della riparazione di questo programmatore di EPROM; osservammo che alcune EPROM, se guaste, portavano ad un grosso assorbimento di corrente, in particolar modo sul pin Vpp, il che portava a bruciare i relativi transistor pilota sulla scheda del programmatore. Al tatto la EPROM scaldava un po&#8217;.<\/p>\n<p>La corrente massima gestibile dai transistor di pilotaggio della Vpp (<a href=\"http:\/\/assets.nexperia.com\/documents\/data-sheet\/MMBT3906.pdf\">MMBT3906<\/a>) e&#8217; di 200mA; noi\u00a0difficilmente abbiamo trovato una EPROM che necessitasse di 100mA di corrente sulla Vpp.<\/p>\n<p>Abbiamo cosi&#8217; deciso di modificare il programmatore di EPROM per proteggerlo da componenti danneggiati, inserendo&#8230; un FUSIBILE sulla linea della Vpp \ud83d\ude42 100mA sono piu&#8217; che sufficienti. Abbiamo cosi&#8217;, semplicemente, interrotto la pista che porta la Vpp ai transistor pilota, e derivato 2 fili verso uno zoccolo per fusibili. Semplice ed immediato! \ud83d\ude42<\/p>\n<p><div id='gallery-1' class='gallery galleryid-3236 gallery-columns-3 gallery-size-colormag-featured-image'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2637\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2637-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2639\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2639-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2640\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2640-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2641\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2641-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2642\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2642-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/museo.freaknet.org\/it\/programmatore-eprom-top2004-semplice-modifica\/img_2643\/'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/museo.freaknet.org\/wp-content\/uploads\/2017\/03\/IMG_2643-800x445.jpg\" class=\"attachment-colormag-featured-image size-colormag-featured-image\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Qualche articolo fa parlavamo della riparazione di questo programmatore di EPROM; osservammo che alcune EPROM, se guaste, portavano ad un<\/p>\n","protected":false},"author":2,"featured_media":3242,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[58,238,99,82,285],"tags":[256,286,287,260,290,289,261,262,288],"class_list":["post-3236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-attivita","category-blog","category-curiosita","category-ricerca","category-top2004","tag-eprom","tag-fuse","tag-fusibile","tag-hack","tag-mod","tag-programming","tag-top2004","tag-topwin","tag-vpp"],"_links":{"self":[{"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/posts\/3236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/comments?post=3236"}],"version-history":[{"count":2,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/posts\/3236\/revisions"}],"predecessor-version":[{"id":3244,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/posts\/3236\/revisions\/3244"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/media\/3242"}],"wp:attachment":[{"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/media?parent=3236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/categories?post=3236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/museo.freaknet.org\/it\/wp-json\/wp\/v2\/tags?post=3236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}