Uploaded December 2022 | Updated September 2026, 2 hours ago
WARNING: It is dangerous to touch 220V with bare hands.
I made several Triac switching circuits and observed its behavior.
At DC, it operated like a thyristor.
WARNING: It is dangerous to touch 220V with bare hands.
I made several Triac switching circuits and observed its behavior.
At DC, it operated like a thyristor.


![Positive & Negative Van de graaff Generator
I found good materials to make the Van de Graaff.
[Positive Van de Graaff]
Top roller(Dome) : Nylon tube
Belt : PVC tape
Bottom roller(Ground) : Silicone tube
[Negative Van de Graaff]
Top roller(Dome) : Silicone tube
Belt : PVC tape
Bottom roller(Ground) : Nylon tube
00:00 - Negative & Positive Van de graaff generator body
00:35 - Van de graaff connection & Polarity test
01:02 - Van de graaff operation & spark test
02:14 - Franklin bell experiment
02:48 - Electrostatic motor experiment
03:50 - Aluminum Plates on a Van de graaff
04:19 - Leyden jar charging & Discharging
04:48 - Van de graaff polarity test
05:15 - Thank you for watching fire letter Positive & Negative Van de graaff Generator](https://i.ytimg.com/vi/tNKpUswp5Ds/mqdefault.jpg)







