Fun with ultracapacitors!!

Why HN readers recommended it

HN commenters use it as a vivid, math-backed demonstration of what ultracapacitors can do and why shorting them is dangerous.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel

Afrotechmods

Topic

ultracapacitors

Format

demo

Level

intro

HN recommenders in dataset

3

HN mentions in dataset

3

Recommendation years in dataset

2013–2020

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

• Here is my favorite movie about ultracapacitors: [VIDEO] Very good explanation on the general math and physics of capacitors, current, heat and energy storage, plus awesome demonstrations at the same time :)

• Shorting batteries is also never a great idea, but supercaps are more dangerous because of their low internal resistance. This video is a good demonstration: [VIDEO] I was working on a controls project where we had large banks of supercaps that would charge up to …

• Capacitors are great for high load requirements but not great as an energy storage device. i.e. if you wanted to draw several hundred amps for a second or two with relatively low heat waste, an ultra-capacitor arrangement would be the way to go, but for …