Driving a powerful LED made with 10 Red LEDs paralleled and talking about its Duty Cycle: schem/demo
![](https://i.ytimg.com/vi/bSy6lEjfssE/mqdefault.jpg)
23:37
Ne jetez pas vos vieilles piles ! Invention géniale avec une machine à souder à laquelle vous n'alle
![](https://i.ytimg.com/vi/1ufCs1-Y8Os/mqdefault.jpg)
4:12
Working model of series circuit/series circuit working model/Electric series circuit project/series
![](https://i.ytimg.com/vi/aXof3iF2MJY/mqdefault.jpg)
23:51
Making a Fully Functional Jet Engine from Soda can | diy Jet Engine | homemade Jet Engine
![](https://i.ytimg.com/vi/3FyXqNcqvRM/mqdefault.jpg)
23:10
Every Component of a Switch Mode Power Supply Explained
![](https://i.ytimg.com/vi/bldrPIDN1r0/mqdefault.jpg)
12:34
About galvanic batteries. An experiment. Make a 1 Volt Cu-Alu cell with NaOH sol. as electrolyt pt 1
![](https://i.ytimg.com/vi/efDTP5SEdlo/mqdefault.jpg)
20:46
Finally! A Battery That’s Better Than Energizer and Duracell!
![](https://i.ytimg.com/vi/RdZbn3ghTWo/mqdefault.jpg)
13:41
Domestic Electricity Board - Build your own for demonstrations of fuses, mcbs and rccds
![](https://i.ytimg.com/vi/qRS3bxpaC5w/mqdefault.jpg)
14:14