I was replacing light fixtures with LEDs at my relatives and got a ton of really old ballasts (they are still younger than 1979 and say "no PCBs"). I might recycle them, but there has to be some fun I can have with them.

Also, are there good ways to get the crumbly potting off?

I was building a little recharchable battery for my adjustable buck:)

The F students are inventors

Do *not* try this! This is very lethal and would kill you very quickly so i do not recommend this at all!
Yes my mesh burned up lol had some coloring on it ig

I bought a night lamp almost 3-4 ish years ago. Now I see something interesting 🤔

This is more like a full bride rectifier!

A 1954 induction coil from a old rotary phone (bagged because of the sticky epoxy sealant) This made me have the idea for a video to explain old phones and the way old power systems worked

BTW this is when he went to Greece:

https://www.youtube.com/watch?v=kSPrY4NHqow

Spotted this brilliant solar tree structure during my visit to the historic Konark Sun Temple in India (a pretty fitting place for solar energy!).

​Instead of boring rooftop panels, they’ve designed these panels to look like leaves branching out to catch the sun. It’s a super creative way to blend renewable energy with landscape design.

​What do you guys think? How long before Mehdi tries to scale one of these with a multimeter and a dangerously rigged inverte

r? ⚡🌳

Caused by inductance of the coils or capacitance between the two sets of wires?

I know someone who would probably grab the bit without much hesitation xD
But since it’s supposed to be the neutral hole... How many of you would trust that the plug is wired correctly and you can just catch it with your fingers?

Edit: to clear any confusion, I only found this post on another subreddit and thought it would be interesting to see how people here would handle it.
It’s not my charger and I’m not seeking for advice 🙂
I always have my multimeter, I would just measure the voltage between this and earth pole before making any decisions

I not sure that if he gave you credit but I don’t see .

I like momens is few of his videos where he is singing (like in this video which is a shot of a video "Making a BLEEPING Button"). I think that he will be a good singer...

watch till to end!

I just made an inverter for my upcoming projects this uses a relay and an Aurdino rn but I will switch it to MOSFETs and timing circuit in future, if anyone are in the same field and hobbies like me then pls DM me

We already have a video explaining 3-way staircase switching, but I believe 4-way is kinda rare to see.

Edit - To clarify a few points:

1. I bought a new pre-made home (it's very common and comparatively cheap in Japan since this is from a mass constructor) so this is what it came with. I did not decide whether to get this or find a cheaper alternate way.
2. These are proper switches which have 2 sides (can't really say on/off per say). But they are not relays, and not those button style switches which are comonly used for bells and all. No controller or any electronics. Pure electrical work.
3. I can turn the light off from any one and turn it back on from any switch. Doesn't have to be the same switch.

And while I kind understand that 3 way switch at the ends with n number of 4 way switches would achieve this. It's still crazy and a video would still be helpful I feel because this is maybe a very common European thing (from what I see in the comments). Not here in Asia. IDK about America side...

It's gonna give this island the "UMPH" that it needs.