Никогда не повторяйте это дома. Драйвер от LED лампы не имеет гальванической развязки от розетки. И провода за которые этот чудик так энергично хватается руками, находятся под напряжением.

Keep in mind that these LED lamp drivers are not galvanically isolated. It's just a rectifier with a switch mode DC to DC constant current regulator. You can get an electric shock out of that because all that stands between you and the live wire could be just a diode (depending on how you connect this to the mains).

It is a miracle that the inventor is still alive !!! 🧐 🤪 😇

Besides being a shock hazard, this 'tester' puts an excessive voltage on anything it is used on. They showed a test of a LED, and it lit up. But if it was connected in the opposite polarity, the voltage would be much more than the LED's reverse breakdown voltage, and would damage the LED. The DMM he used has a continuity range for testing with only a few volts maximum, which is safe for most parts. But this tester has too high voltage and is

Тем кто захотел повторить это: На данной схеме нет гальванической развязки. Это потенциально опасно для жизни! Как вариант, использовать с трансформатором 220-220.

That's why missing downvote count is an issue... Don't do this at home. Especially not in countries with 230V mains voltage. No proper isolation!

Excelente, si que me sorprendió saludos desde Uruapan Michoacán México. Buen aporte 👌

Just use the diode tester that comes with an multimeter. Decent multimeter will have atleast 3V for testing which is enough to light up most LEDs. For series LEDs, just measure one and multiply with how many in series. Not worth risking ur life for with this stupid non-isolated garbage

Pro tip 1: don't do this.

Funciona perfectamente, muy buena idea.

அருமை அருமை புது முயற்ச்சிக்கு வாழ்த்துகள்👌👌👏👏💐💐💐🙏😊

Amazing how... I can't say how that so amazing

Если он, касаясь так контактов пальцами, ногой коснётся мокрого пола, или спиной в металлическую батарею упрётся, то током трепанёт, мало не покажется.

This is lunacy. People, don't build this. An LED lamp is a very unreliable source for a constant-current driver (because different lamps are built very differently), and it's entirely possible for the lamp you choose to be completely unsafe to touch.

👏🏼👏🏼👏🏼👏🏼👏🏼 muy bueno, good job.

Good and practical idea ...thanks ...فكرة جيدة وعملية ...شكرا

Man, why not doing it the other way round?? Wire it so that you plug the wall wart into the socket and have some 4mm banana jacks into the multimeter?

The design variability in loading devices makes this extremely dangerous, never mind that the short-circuit output current is around 5 mA. Unbelievable that the video does not post any warnings.

Excelente herramienta!!!! Muchísimas gracias 🤗🤗🤗🇨🇱

Excellent Idea , Thank you!