Thank you for your videos. Your reverse engineering and safety tips are very helpful for learning, and your experience and knowledge is high. The internet is better because of people like you.

You are doing a great service to society with such in-depth analysis. We want more people like u

Nice clock ....don't see many chiming clocks these days, and the little girl is still helping you ......... keeping the schematic warm :-)

Again, you are very informative in your description of your wire diagrams which I like very much, I'm certain I am not the only one who does either. Some people just won't bother to explain it all & take the time to count all of the winding's, that's very important for us to learn how all of these things work so thanks for a good video again, & a shout out to the security officer. LOL.

Your new old clock is beautiful! Thanks for warnings about COB lamp and all yours videos!

You presentation is very good as usual. Very painstaking The clock is simple & very elegant with matching sound. I presume it’s made by u. Congratulations & best wishes

If you were wondering about that chip you could't find i found this ( Mobile version: LED isolation 5W driver IC chip HA3022 Hua Hong SOP-8 brand new original replacement BP9022A ) on a Chinese chip site..

Finally... :) this morning I have buyed used gun soldering iron ČSN typ ETP III, just because of you .

That's a shame about the transformer, it was looking like an ok-ish flyback supply. The heatsink looked nice untill that thin disk came out so easy, it should have been cast as a solid part for good heat transfer. Your beautifull cat knew it was crap, sitting on the diagram was a hint :-D

I love this guys accent. The way he rolls his 'R's sounds good.

Your videos are very useful. Thanks !

The cat is too funny! Really enjoy your analysis and critical comments.

I love your videos and your cats, keep going!!!

You never made that video about your clock! I love your electronics videos, even if I can't 100% wrap my brain around all the schematics and circuitry of devices. I'm a collector of vintage/antique clocks and want to hopefully professionally service them one day. If you still have that clock nowadays, you should do a video on it. :D

absolutely love the clock

Another good video - thanks. I also enjoy the input from your four legged engineer.

Wow! Amazing clock

Good morning glad to see the early video.

Very good and useful video, thank you very much. I also loved your cat, its relaxing!

Nice sound on the clock!

VERY GOOD REVIEW. THANKS FOR SHARING.

I like your cat, she really enjoys helping you ;)

Thanks! great video! and great new clock! ;)

Good video

10:30 that's nice, nice indeed! In fact, BigClive tore down a USB power supply once and it was sticking mains out on to the USB, the reason why was because the transformer's primary and secondary was touching and the enamel had worn off. So these things are 100% lethal and should be treated as live... And love the clock!

Nice video!

Ah! .. that transformer teardown was my first one ... that was a valuable lesson ... thanks :)

Do a review video on the cat

I like your vids! +1 subscriber And Nice clock!!!

Very Nice !!

Nice! 👍👍👍 Great clock!

What the heck is powering the controller chip with no auxillary circuit? Is it just running off the start-up circuit or is there some other way I haven't seen before?

good job

awwww such a cute little cat

Great clock !!!

Foooool bridge rectifya

Thanks you for your video. Very important information about those cheap chinese made spot lights. I've bought 8 of 10w spots but it's too bright. So I'm searching for a way to mod those COB led drivers inside the spot to reduce the power to, let's say, 7w. The driver schematic seems to be quite similar to yours but with different IC and components.

Thanks for making this video ! Yes you share me know more electrical equipment and its quality. #CatGoneWild @@

The way he said "Balb" 😂

Good Works.

That transformer is bad news when that varnish on the wires melts. I like when cat is trying to eat the primary winding of the transformer. You got yourself an awesome clock maaan!!!

Thank you for this video. I like your explanations. Please do more for the community. The funnypart you are afraid of the non insulated heat sink, and 1 minute later almost touched the live when you used the clamp meter :-P....

Nice !!!

Verry niceeeee videoooor

So, similar switcher to the non isolated buck, more components though, so expect them on the next revision to be using the non isolated buck, live heatsink and all. I just regard all of those style lamps to be live on all exposed metal in any case, so turn the lights off before removal, as in many cases the section above the socket will disintegrate as the poor quality plastic they use has little UV resistance.

9:57 you can see in the background the cat having a play with the wire from the transformer! :)

Hello Thanks for sharing, In future videos can you show how to modify the output power? can be nice for people who want to extend the life of lamps by putting less thermal stress to the COB. And measuring the temperature would be useful too. Ps: nice 🐱

You finally uploaded!!!! F yeah!!! Love your videos man, I recently watch the portable lamp with phone charger and how it’s connected to mains voltage, which can kill you! Love your vids man keep up the good work!!

Hey how do you measure Watt using that multimeter on AC mains

great

11:31 Nějaké informace jsem našel, ale jen pro HA3022: ganglu.en.ecplaza.net/products/ha3022-led-constant-current-driver-chip_3666090 11:31 I found some informations but for HA3022 only: ganglu.en.ecplaza.net/products/ha3022-led-constant-current-driver-chip_3666090

Vintage clock? Such a great choice

I was trying to figure out your accent, where are you from, Sweden, Finland ?

Yes one thing to make sure try to open it but, once you go to a store you'll never know? you just can't open it in order to buy it, you really have to buy it before you can open it, also not all people knows electronics well it's a gamble for others anyway it's a good warning

Nice clock

Couldnt the quality of the power strip affect wattage results?

Hi, Can you please do a video about Chinese induction heater modules? Thank you

Ładny kotek

BigClive had a led ring with the same chip and he found some kind of image of it ...........thumbs up for the cat

nice clock. and nice cat of course :D some videos about your home made test equipment would be cool, like the extension strip/power meter, the frequency counter and the other pieces Ive seen in your vids and on your website. I know youve done some videos about them on your other channel but I dont understand Czech :(

Ahoj Danyku, můžu se zeptat na plemeno kočky? Je super

Oh jeez, I have like four of these. One burnt out already.

very good vedio

Alright, here's some backstory on this light, as I know a little about it: The power supply is made by ShenZhen Dark Energy Co., Ltd. I've seen them before in budget cheapo lights. The reason they are used in places like is is because the circuitry is very well designed and simple, making these little things cost around 10-30 cents each for small sizes like that. Suppliers like that due to the fact they are incredibly cost effective (as was quite obvious). However, it's not their fault they're built like shit. They design the circuits in these tiny PCBs because it's what the market demands, however they do make properly isolated, UL/ETL/TUV etc listed models that are much larger in size, and won't fit in a unit like this. However, they do make buck regulators (I have one of them) that is made much nicer than this with proper output filtering and it's much nicer. Even though it is not isolated from mains, the way to achieve that is to make the LEDs incapable of being touched by people, and then hiding the tracks for the led connections under the LEDs so the 3kV finger test finds no continuity, making these bulbs pass the certification. I do like Dark's buck regulators, as they use caps (such as Aishi) which aren't good but nor are they bad, and they are usually very efficient in circuit design. Honestly if the market wasn't filled with a demand for cheap ass bulbs like this, we wouldn't have this problem.

Cat is so cute:))

@DiodeGoneWild I had found the datasheet for the Chip, (but is in chinese) www.hhzealcore.com/upload/201605/09/201605091049136352.pdf The IC do have open-loop protection in it, Is in pin 4 and with the 82k om resistor to do the setting

No optocoupler feedback system to the control chip....:(

I think this IC is copy of BP9022A, looking like same circuit configuration.

6:22 Like for a cat. :)

To bad they dont make things such as your clock anymore. The chime is excelent. And your cat knows more about switching transformers than the manufacture of the so-called led bulb. Im guessing the cap on the primery side is used as a slow blow fuse.

How do you measure wattage with this yellow multimeter?

11:10 Your cat is the best!

V.good

second time watching this, I realized the manufacturers threaded the aluminum fins, that's weird and it seems to me that'd be really tricky to do.

What does Veritáska think of your clock?

5:47 interessting, the Cable is rated 3kV DC.

This might be a good LED bulb if it have thermal paste

8:37 I think that in this case the fuse is the circuit by itself :)

The other horrible thing is the tape wrapping of the circuit board. The pins can easily penetrate it and make contact with the casing. I don't understand anyone who buys safety critical staff bypassing any regulations. You can easily set your house on fire and no insurance will pay if they find out...

Good video, and how I love yourrrr hoobly doobly rolling of R's accent. Please don't be offended its meant with the deepest respect. I wish I could speak a Scandinavian language as well as you speak English! I really do! But why do the Chinese lamps over quote power? I bought some corn lamps on amazon rated at 15w yet when measured it showed just 9w with a current draw of 100ma at a voltage of 240v (UK) PF was all over the place obviously! Another set was bought from Greensun and showed a power of 20w PF 0.95 so great, well not so actually it runs very hot and the output falls to just 9w after 15 mins. When I reviewed it Poorly I received an email telling me if I withdraw the reviews I could have the lamps free of charge! I left the reviews up.

Funny kitty!!

Electric wild!

At about 10:50 in you point out the near total lack of isolation between the secondary winding and the ends of the lower primary winding. I have watched enough of your KZfaqs to realize how poor this design is. But I wonder if yiu coukd take a few minutes in the next tear-down KZfaq that involves a transformer to show how those leads should be isolated. Thank you again for an outstanding KZfaq. Also how would the isolation be improved/increased?

I bet he's an electronic professor

How did you made the watt meter please tell

10:49 that poker face

Like for the cat!!

4:26 in the middle of the piece put C4 xD

That power supply is not bad quality one

LOVELY CLOCK, LOVELY CLOCK, LOVELY CLOCK... I want, I want, I want !!!

žebrování a přívodní patice jdou od sebe rozšroubovat.

Hi..where you origin country?

Try it with 5v DC or phone charger..

*HeIcH* a 302

LAXMAN poojari Karnataka Mangalore lnd 👍👍👍

heatsink unscrews

Proč tak zpíváš u toho? :D

What's your Watts meater daygram with details please 🙏🙏🙏🙏

Please video I like it 🍇 🐈🐈🐈🐈🐈 cat

i like your accent hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh