How to Make Your Own Emergency Light - Easy and Cheap

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Eletrônica e Tecnologia

Published on Nov 6, 2016
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How to Make Your Own Emergency Light - Easy and Cheap Materials: 3 common white LEDs 1 resistor 1/4W 1R 1 resistor 1/4W 330R 1 red LED (or green) 1 IN4007 diode 1 battery holder with two batteries (AA) 1 5V relay 1 5.1V cell phone charger See it working: • Emergency light - Video practice ... Polarity test: • DC polarity identifier - With ... Help the channel, subscribe: https://www.youtube.com/c/eletronicae... This channel does not have video lessons, we are just learning together and having fun. More details of the projects: http://canaleet.blogspot.com.br/ More videos at: / eletronicaetecnologia Send a photo of your assembly for publication, e-mail: [email protected]

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