It's not a good idea to charge an energy storage system like supercapacitors directly because they will return power to the generator when it isn't providing enough power. However by simply using a diode, it is easy to prevent that problem. https://youtu.be/wjjecWXyVEY Hand crank generator rated at 15V 300mA no load voltage and current measurements youtube.com/c/electronzap https://www.amazon.com/shop/electronzapdotcom for links to where I bought most of the things I use in my videos. Electronzap earns money from this storefront. https://www.patreon.com/electronzap If you'd like to support my efforts directly. #electronics #power #supercapacitors ... https://www.youtube.com/watch?v=b2U8av1DNPU

Quickly put this video together before work. I used one of my new XL6009 voltage boosters to input 9V and output 20V so that I can power 10 LEDs, with a 1.8V drop each, wired in series. https://www.youtube.com/electronzap Link to where I bought this XL6009 voltage boost module is posted to my twitter at https://twitter.com/electronzap/status/1038743284728979456 https://www.patreon.com/electronzap https://www.twitch.tv/electronzap https://twitter.com/electronzap https://www.facebook.com/electronzap/ https://www.reddit.com/user/electronzapdotcom https://www.reddit.com/r/ElectronicsStudy/ https://www.pinterest.com/electronzap/ ... https://www.youtube.com/watch?v=avU5mDCGNy0