{"id":10270,"date":"2015-04-24T21:40:22","date_gmt":"2015-04-25T01:40:22","guid":{"rendered":"http:\/\/embedded-lab.com\/blog\/?p=10270"},"modified":"2015-04-24T21:43:20","modified_gmt":"2015-04-25T01:43:20","slug":"quick-review-cheap-chinese-component-tester","status":"publish","type":"post","link":"https:\/\/embedded-lab.com\/blog\/quick-review-cheap-chinese-component-tester\/","title":{"rendered":"Quick Review of a cheap Chinese component tester"},"content":{"rendered":"<p>Adam Fabio has posted a <a href=\"http:\/\/hackaday.com\/2015\/04\/24\/review-transistor-tester\/\" target=\"_blank\"><strong>quick review of a cheap Chinese brand multifunctional component tester<\/strong><\/a> on Hackaday. He found its build quality was very cheap, but he was also amazed with its features and functionalities, including ohmmeter, capacitance meter, transistor tester, etc, which worked amazingly well with a reasonable accuracy. Powered with Atmega328 microcontroller, this component tester can be purchased for ~ $20 on eBay and Aliexpress.<\/p>\n<div id=\"attachment_10271\" style=\"width: 595px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/embedded-lab.com\/blog\/?attachment_id=10271\" rel=\"attachment wp-att-10271\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10271\" class=\"size-full wp-image-10271\" alt=\"Transistor tester\" src=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2015\/04\/tt-feature.jpg\" width=\"585\" height=\"303\" srcset=\"https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2015\/04\/tt-feature.jpg 585w, https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2015\/04\/tt-feature-550x284.jpg 550w\" sizes=\"auto, (max-width: 585px) 100vw, 585px\" \/><\/a><p id=\"caption-attachment-10271\" class=\"wp-caption-text\">Inexpensive Transistor tester from China<\/p><\/div>\n<blockquote><p>I didn\u2019t have huge expectations for the tester, but I hoped it would at least power up. \u00a0Hooking up a 9 volt battery and pressing the magic button brought the tester to life. Since I didn\u2019t have anything in the socket, it quickly lit up and displayed its maker information \u2013 \u201c91make.taobao.com\u201d, and \u201cBy Efan &amp; HaoQixin\u201d, then it informed me that I had \u201cNo, unknown, or damaged part\u201d.<\/p>\n<p>I had a few resistors lying around the bench (doesn\u2019t everyone?) so I put one in. The tester read it as 9881 ohms. Sure enough, it was a 10K 5% resistor. \u00a0Capacitors \u2013 ceramic disc, electrolytic, and surface mount all worked as well. The tester even provided\u00a0ESR values. The real test would be a transistor. I pulled an old\u00a0\u00a02N2222 in a TO-18 metal can, and popped it in the tester. The damn thing worked \u2013 it showed the schematic symbol for an NPN transistor with Collector, Base, and Emitter connected to Pins 1,2,and 3 respectively. Flipping the pins around and re-testing worked as well. The tester showed hFe as 216, and forward voltage as 692 mV, both reasonable numbers for a 2N2222.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Adam Fabio has posted a quick review of a cheap Chinese brand multifunctional component tester on Hackaday. He found its build quality was very cheap, but he was also amazed with its features and functionalities, including ohmmeter, capacitance meter, transistor tester, etc, which worked amazingly well with a reasonable accuracy. Powered with Atmega328 microcontroller, this component tester can be purchased for ~ $20 on eBay and Aliexpress. I didn\u2019t have huge expectations for the tester, but I hoped it would at least power up. \u00a0Hooking up a 9 volt battery and pressing the magic button brought the tester to life.<\/p>\n","protected":false},"author":1,"featured_media":10271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[348],"tags":[1167,896,86],"class_list":["post-10270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-review","tag-component-tester","tag-lc-meter","tag-transistor-tester"],"_links":{"self":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/10270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/comments?post=10270"}],"version-history":[{"count":3,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/10270\/revisions"}],"predecessor-version":[{"id":10274,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/10270\/revisions\/10274"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media\/10271"}],"wp:attachment":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media?parent=10270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/categories?post=10270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/tags?post=10270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}