English misspelling on labels is a clear warning to not use it.

AE - Automatic Explosion

"So today let's take a look at a fleshlight" OH God please no

0:15 comes with discharger (this charger) who wants to discharge the battery

_"So today guys, lets look at an interesting _*_fleshlight_*_ ."_ Oh dear... Don't come at me like this.

Other than knowledge, the reason to subscribe this channel is your *accent*

Always a good watch! Thanks for posting Diode!

my cat is seriously in love with yours! 🐈

Excellent video tutorials as always. Great work uploaded. You're one of my favorite KZfaqrs. Keep up the good work

Thorough analysis and fair evaluation of the circuit designs. Keep the good work! I like it

I would guess those -transformers- *coupled inductors* are supposed to be used in non isolated devices such as LED light bulbs, but many of them end up inside death trap chargers.

AE- A&E - Accident & Emergency. I watched this *all* the way through and I was most impressed! I'd love to see an _ideal_ LiPo charging circuit created by you! Worthy of a Sub and thumbs up!

Wow I thought Big Clive was in depth but this guy takes it to another level - unwinding the transformer - Brilliant! I wish I had a teacher like this when I was at school - quite superb teardowns and explanations. I only came on for a minute and have spent all day on here learning - Its been a good day!

Thank you, I finally understand how these chargers work and what the opto coupler is for.

I love your videos 👍. they are quite relaxing 🤤.

I have done same removing unnecessary IC. It"s working well now. Thank you for your video.

I love the amount of warnings in the beginning

I watched it full and it was a great experience learning about this circuitry

Keep up the good work! I love watching your videos. They are funny and interesting.

That «AE» suffix must stand for «Acquisition Extinguisher», I guess.

Thank you for showing the identity of the LED control chip. I have a number of LED touches and that flash mode drives me nuts I just want it to switch on and off. Seems thats simple with the LED current limited by a resistor rather than the chip.

Thank you, Diode!

only DGW can make 40-MIN video about flashlight and make it super interesting.

Loved the very detailed teardown. You have inspired me to modify one of my lights to remove the flashing mode.

I love your videos, I found you after watching big clive and I can't stop watching your videos! You are so smart and funny and I love your voice and the way you pronounce the battery information. All in all, you are about to pop and become HUUUUGE!

Your cat is an essential presence to your videos!!! LOL. It's a beautiful cat. :) I used to have one and would come on my desk every time I was studying and usually throw herself on my books...almost wanting my attention. LOL

Annak idején én is vettem egy hasonló lámpát, de szerencsémre az egész szerkezete fémből van, ugyanúgy raktam bele CPU pasztát, az akkumlátorát pedig Sanyo UR18650TH M39A cellákra cseréltem, azóta is remekül működik. A videóid nagyon tetszenek, igazán nagy szakértelemmel készülnek. Sok sikert a továbiakban is.

Great video! Very informative.

This inside moving lense mechanic was initially implement to design a waterproof and dust proof housing. Here it seems quite useless, though. Thank you for this informative and entertaining video. 👍

Can same schematic be use as 12 v 5 amp smps by replacing transistor and pulse transformer for higer rating ?

Diode gone wild, I have gone through your website in English version and it was amazing work... I was able to learn a lot from it. Your videos and website are very helpful in understanding switching power supplies. Can you please tell me where do you get the ferrite cores for the transformers you have used in switched mode power supply circuits in your websites? where can I get it?

I have not watched the video yet but I expect at least a few "that's a bit dodgeeee". [edit] 1 minute in and we are already at "looks quite dodgy" :)

Great analysis of a poor flashlight and a terrible charger. The old hand drill will last longer than both of them :o)

That charger looks a lot like the one that was provided with the Plantronics Bluetooth earpiece! I got it in the early 2000's, very similar Circuit design, mine has a full bridge rectifier instead of the half wave on yours but apart from that they are almost identical! I always wanted to know how this circuit worked... Thanks 👍

15:31 - This cat is so persistent! ;D I hope it got some pets it came for.

24:00 plz explain how to reverse engineer pcb to its schematic ??

Very complete evaluation, very informative. But I'm sorry, while I'll continue to watch your videos, I'm taking Bigclive to bed with me. His voice is like magic to put me to sleep. Kidding! Thanks for this informative video. Very well done. Love your close ups, also the cat.

I dislike the "silly mode" epileptic fit in a chip and thus I always bypass that chip... I don't bother increasing the current limit resistance(s), instead, I enjoy the marginally higher light output even if at a slightly reduced lifespan and quite some extra heat. As for the PSU, I kinda like the sheer simplicity of that design, except they could've: Put an adjust pot for max V-out, Added better creepage on the circuit and in the transformer, added a fuse. The circuit design would make a great reference for a DIY low power isolated SMPS.... for battery operated stuff coming from a learning-electronics angle.

20:25 and the same dodgy charger as mentioned in a review on this channel about a year ago! Output: DC 4.2V +/- 0.5V! Seriously?! So it will charge your Li-Ion battery up to (potentially) 4.7V, and anything above 4.3V will make your Li-Ion battery catch fire or explode. That's nice! 21:12 4.42V oh yes that's fantastic! almost the exact same voltage as the last one (4.45V). That will make your Li-Ion battery blow up.

i bought the same thing about a year ago, any tips to replace the LED chip?

You should try charging with this +/- 0,5 V charger and then send the video of exploding battery to the seller

Been watching your videos and love them. Comment on some of them and shared a couple of them as well. I’m hoping one day you do a mini series of designing a PSU. For example 12V 3A supply. From watching so much of videos and sometime rewatching them, I know the different designs that are incorporated into PSU. But where I suffer from is understanding the designing/building of the transformer and how it is determine based on the IC operating frequency and desired output.

Another great video... :) I'd attribute the poor transformer construction to ignorance (of the manual labouring guy) rather than laziness; thanks for your amazingly instructional and entertaining content.

Hey nice video 👍 truly very good channel

We used to put a piece of tape isolation on end of windings of the primaries on our transformers in the time, early 1980, amazing 40 years ago! Time go fast!

I'll really appreciate a video about your battery tester because it's really nice, i've already seen it on your website but a video is better to explain things. Keep up !

Why the current goes through the feedback coil and not directly back to mains?

2:12 "Sheef life around 10 years; Encironmental friendly" Wait... I'm sure this is exactly the same as that other "3000mAh" Castnoo battery in a few videos ago. I expect 500mAh capacity as usually for all fakes :p.

Theses flashlights that use an 18650 or the three triple A cell can also be run off a 26650 battery as well! The battery chassis fits the 26650 perfectly.

Dan, would you show us your bench power supply, the PS2 30V 3A ?

Good info

Postavil jsem si vlastní rentgen, mám neuvěřitelný fotky, ale sháním nějaký rentgen fosforový kazety, fosfor na osciloskopických obrazovkách jsem rozzářit nedokázal, ani svítící náramek, tak hádám že fosfor na těch kazetách bude obsahovat nějaké těžké kovy a bude nějak dál speciální, nevěděl bys kde takové kazety sehnat? Neznáš někoho s těma kazetama? Kdyžtak ti pošlu nějaké fotky na email co jsem pořídil :)

Greetings from Brazil to all. Look at the cat `` engineer´´ at the beginning of the video. and later too. very good. Useful information. Congratulations. success.

i didnt watched it yet but noice well explained video

SHEEF-LIFE gets me every time

I bought 2 similar torch lights over 3 years ago from Taobao and put one in my car for occasional repair use and / or light maintenance under the hood, while the other inside my desk drawer for regular usage. Price is about 4 USD each included battery, charger and a hand string. Both still working fine as of today. The problem is, your country's importers need to pay shipping, import tax and plus making a profit, so they ask the supplier in China for a low price. The supplier in China in fact can provides high , medium and low end products. So they said: Bada, u wan kolidi we gib kolidi, u wan jip jip we gib jip jip. There is lo kolidi n jip jip ( Brother, you want quality we give quality, you want cheap cheap we give cheap cheap, there is no quality and cheap cheap). Hope that explain the situation. p.s. I am still using an induction cooker bought in Haikou in 2003, and a 28L counter top oven bought in Shanghai in 2009. Both are Chinese brands It also depends on your knowledge to choose a good brand.

Long time viewer, love your videos. Your accent makes it sound like you're saying flesh light😂 *NOTE* I'm definitely not making fun of your accent👍🏼

arent those resistors waaay over their power rating? they look like 0805s? which are 0.1W or 0.125W I think, two of them left so 0.25W, theyre dropping ~1V and passing 500mA...

Does a lithium battery care if the input voltage has a ripple voltage?

"What does AE mean? Automatic Explosion?"I almost died of laughinglove this guy

A lot of old lead-acid battery powered devices use that type of charge indicating circuit.

18:48 === Note: the metallic disk above the LED can make contact with the two leads and short and burst the battery..

Hello diode gone wild! I have found something strange happening with my led christmas lights When they are near my Computer they light up at 10% of their brightness , and if i touch the plug it lights brighter (15%) , they do this even thou they aren't plugged in.. Any explanation for this weird phenomenon?

How do you make your soldering gun?

Automatic Explosion + Drawing on your cat = awesome

Hello! And many kisses for this new video!

Nice review. I guess the skywolf torch is still the best choice for low money! Its a pitty they never pay attention to good heat sink design. They dont even care with these cheap led torches. One of my led lamps got so hot that the led itself get loose from its solder pad and melted the plastic lens on it!

How the capacitor charges and discharge please explain SIR at 25:54

Thats just simply crazy.

I like your sound

Would it have been possible to simply mod the light or the charger with a TP4056 board to make sure it doesn't over charge ?

I have received AC adapters in this casing with quite some electronics I ordered from AliExpress. The internals were different with every PSU. I believe this is some kind of standard case that small manufacturers can order to build their AC adapter. The quality did range from poor to unacceptable. As people are not willing to pay for AC adapter and they don't have the efficiency of large manufacturers, they cut costs in every corner, which leads to these single transistor designs. Interrestingly, for one of those AliExpress sales, the seller was already warning that the power supply was unsafe :) I have thrown most of them away, but one I judged fixable and fixed it.

Can you do one of those eBay flashlight + taser

As supplied it would be easy to plug in that charger with AAA cells inside? I do wonder sometimes. Was it a protected LiPo because that might explain the cavalier attitude to safety? Great video- as usual.

what was the voltage during charging this amazing battery? :D

always liked your humor. 'AE = automatic explosion' lols or 'All is dodgeeE'

I love your videos but there is one thing that drives me crazy. I have never seen such a talented and knowledgeable engineer whose soldering was so dreadful. I will donate a good quality soldering equipment and supplies if you promise to learn how to solder properly.

I owned a very similar flash light with the same construction but different design. Luckily I am still alive . It was a nice flashlight for the price

I have a similar -but even more dangerous- type of charger. It is built mostly the same, but it does not have a cable permanently attached to it, but instead has a USB-Socket and comes with a matching cable. So people might get the idea of plugging that cable into their USB-Chargers and totally overcharging their cells to 5V.

A edge circuit. Nice.

i can hear the switching on low mode when i put the button at my ear. (the flashlight with button in a screwable cap) :D

nice video

At 2:22 I see spelling errors on the battery at 10:24 the cat looks happy

Pink panther is back lol!

I think the boss was in the video so much because it wants to see a laser pointer review instead. Lol A drill like that can come in handy when you need to drill something with a very small drill bit. I used one like that to replace seat tags on chair arms in an auditorium at work. It gives you much more control and your less likely to break a small bit than with an electric drill. Give the boss a petting from me.😎👍

I like those Aerocell batteries :)

The best LEDs you can find today have a luminous efficacy of about 200 lm/W. In the best scenario, an LED with a rating of 20000 lm would require 20000 / 200 = 100 Watts of power. It is physically impossible to get that amount of power from an 18650 battery. The 20000 lm rating is bogus.

An easy way to compare torch brightness: Take a white sheet of paper and put a drop of oil in the middle. Shine one torch from the front of the paper and one from the rear. You can also move one torch closer of further away to get an equal brightness.

Why not boiling the transformer in hot water to get rid of glue and salvage the core?

3:05 AE - Ambulance Emergency.. apart from the obvious great content you are hilarious too..

Maybe the charging power supply is made for Ni-MH. I mean 4.4 volts for three Ni-MH in Series is pretty much normal. Nice video 😊👍

The drill is nice, but does it come with a safer charger?

How the capacitor discharges 25:54 show me the path please

3:11 Wonderful explanation 😁😁😂😂🤣🤣

I'm one of your fan... Could you make videos how make pri and sec transformer for not common voltage like 35 or 40 volt with high current Thank you

Next good video from you I love watching teardowns of this cheap flashlights

you like those older tools like that.. I have tons.. my grandfather, father, myself and my son are all carpenters.. If you are interested maybe I could send you a few of the old had operated things?

When you remove a resistor from parallel resistor system, it increase the resistivity. So that will decrease the brightness.

Same as my head lamp: no current limit between the lithium cell and the charging port. Fault in the cable: fire.

As crappy the charger of the torch specs of + or - 0.5V are, this probably is ok ONLY if the battery is truly protected.