Crown battery. Charge via USB.

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ElEnBlog - блог об электронике

Published on Jun 4, 2019
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USB krona - http://www.elenblog.ru/ZNTER_9V-400mA... I have several multimeters that are powered by a 9V battery, which is popularly called a "krona". Unfortunately, multimeters run out of battery at the most inopportune moment, and a good krona costs about $ 1-1.5, it lasts me half a year. Sometimes less. I accidentally came across a krona battery on the Internet, for charging which a special charger is not required, since it is charged from a regular micro USB. Almost every smartphone on Android is equipped with such a cable and charger, so most likely many people have several such chargers at home. This krona battery has a step-up converter that raises the voltage from 3.7 V to 9.5. As is correct, pulse converters create a lot of interference, and measuring equipment is very afraid of this interference. I checked it on 2 multimeters, Fluke 83 and Unit 71E, when powered by this krona battery, the measurements were not distorted and were accurate. Perhaps I will make a video soon. LINKS from the end of the video: • Li battery 22650 (slightly thicker than 1... - Li battery 22650 (slightly thicker than 18650) Article and files for the video on my website - Electronics Engineering BLOG (http://ElEnBlog.ru) in: VKontakte - http://www.ElEnBlog.ru/VK Odnoklassniki - http://www.ElEnBlog.ru/OK Twitter - http://www.ElEnBlog.ru/Twitter Instagram - http://www.ElEnBlog.ru/Instagram

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