Inside a twisted LED bulb
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- Опубліковано 14 лис 2023
- I chose this lamp to take apart because it has an interesting style. It's very similar to a fashionable (and expensive) designer compact fluorescent lamp called Plumen that was very popular with architects and designers because it "made a statement".
This one is based on two shaped plastic tubes with two parallel flexible LED filaments running through them. Each filament is based on a flexible PCB strip with a series parallel array of LEDs to give a high operating voltage from one end of the strip to the other. That means they can use a fairly standard linear driver inside.
There's another of those mysterious inline regulating chips to add an extra layer of current regulation to the LEDs. These seem common in dimmable lamps, and I think it's a way of regulating the LED current based on ripple from the current limited supply to the capacitor, that will be affected by the duty cycle of the dimmer output.
It could be that the chip detects when the voltage across its internal sense resistor has dropped too low and then regulates the current down to the point it can maintain an acceptable level continuously, with its external capacitor acting as a simple analogue memory.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- www.bigclive.com/coffee.htm
This also keeps the channel independent of UA-cam's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators - Наука та технологія
Translation of the Chinese is "Triac Dimmer". So that is the external dimmer switch, not a fusible resistor.
This is the sort of circuit where an animation of the current flow and voltages at various stages of the AC cycle with the dimmer in action would be interesting.
I'm sure you found this, but for completeness:
"VAS1001 1 is a linear LED driver with a low-pass filter function that can eliminate low-frequency ripple current and eliminate LED flicker. VAS1001 has a built-in quick start circuit, which can effectively shorten the time to reach a stable state. VAS1001 comes in two package forms: SOT23-3L and SOT89-3L . Among them, SOT23-3L can drive a current of 35mA , and SOT89-3L can drive a current of up to 150mA . Both can be used in parallel to achieve higher drive currents. VAS1001 requires only one external low-voltage capacitor and takes up little space, making it especially suitable for small-volume lighting applications."
A very interesting little chip, should make dimmable lamps a lot simpler, cheaper and user friendly.
Clive, huge congrats on making it to ONE MILLION subscribers. Enormous thanks for the many years of informative, interesting and entertaining content. Here's to the next million!
The chip is the SM[...]EG, why do I suspect they had a Red Dwarf fan on staff.
It was Izzy Hammond most likely.
can you please explain?
@@theoneohmresistorSmeg, short for Smegma aka knob cheese. Was a common swear on Red Dwarf.
@@theoneohmresistorif you don't know get to know, 🤗
@@northpeckhamestateoldschoo2947what? 🙃
Weird shape, but it'd make perfect sense in a flower petal themed lamp where it'd look like a stamen.
The Red Dwarf crew would love that IC 😅
That IC was in the coffee maker or the chicken soup machine.
Very nice, almost as if whoever designed it knew what they were doing!
Impressed to see that this lamp has a fuse resistor and a Metal Oxide Varistor at the input.
So if there is a power line overvoltage or any other power spike, the MOV shorts, the fuse resistor opens and the lamp go dark very quietly, instead of a loud "bang" with a flame and some smoke.
Ha, that's a shame ;-)
@@pietpaaltjes7419For the likes of us it is, but for the general populace it's probably better that way.
I can usually resist impulse purchases of the latest shiny thing but I would really like to own this smeg bulb.
Or is it a 'smegging bulb?' 🤔
I feel that IC should from now on be called the "Smeg" chip, because it is written... :P
I was just about to make the exact same comment but you beat me to it. 🙂
It's a really nice bulb. I like light bulbs that can dim so it wouldn't be hard on my eyes. Thanks for the info.💡
My wife says I must have a varistor fitted in my brain, as sometimes I am dim. Good post, very interesting designs are using these LEDs, as they make excellent light sabres in Star Wars dioramas. Thank you 👍
That dimming functionality certainly is interesting. And it's nice to see a LED version of that Plumen lamp. While I did not find it particularly good looking, and the drivers tended to start humming after a while, it was unique and these might be good replacements for those lamps.
"It's very interesting!"
YOU'RE very interesting, Big Clive! Thanks for all the work you do on these soothing videos.
That load resistor and shut-off circuit for it through the double current regulator chip is very clever. Neat idea to let the LED set current resistor's voltage to shut-off the load resistor like that. Also, the VAS1001 sounds very interesting. I wish a lot more LED products included one.
Another excellent Video of these Chinese lights with schematic and clear explanation 🙂
I have almost no understanding of moost of your videos...
But it's fascinating and your presentation and knowledge is top notch!
Grats on 1mil!
❤️✌️
Congratulations on reaching 1M !!!🎊🎉
For as long as Big Clive has been on YT it is a true crime that he only has 1M subs.
I love these vids so much. Thank you for your service BigClive
Surprisingly good for a gimmick lamp.
the plastic housing is straight from an old CFL bulb. Neat.
I love the 'Super shady Chinese factory tester' as electrical items are getting so hard to electrocute yourself nowadays, I think I am gong to get one.
you had me at 'twisted'...
And then I saw the Kink Palculator!🤪
Thanks Clive!
Awesome Video Big Clive
It’s 6am, Clive is playing with something pink and shiny. All is well with the world.
Good morning everyone 😊
Definitely make this into glowing ornament i would love to watch that process. Also this video was wonderful thanks for going to the effort
Does anyone else say "One moment pleasssee" in parallel with Clive...? 👀
Of course....
We Always know , when they are coming😅👍
Now I imagine 100 of us going "one moment please" in unison, then cheering.
Always!
Cute lamp :)
I saw larger versions of these last time I was in a big-box home improvement store. Big swooping chandeliers and the like. Hate to say it but they were actually pretty nice.
1:01 Thumbs Up for the Jerryrigeverything re-enactment!
I found an image of the VAS 1001 by Chip Lead and Google Translated to "LED ripple current suppressor/anti-flicker ic".
Interesting good to watch 👍
Congrats on 1 million 😊
love the “lets do a jerry rig everything”
That’s a crazy coincidence, I was at the hardware store, literally when this was posted and saw one of those for the first time
"Let's do a JerryRigEverything" -- I haven't watched a video from them in years, but immediately after hearing this I can't stop thinking "...we start seeing scratches at about a level 5, with deeper grooves at a level 6".
Excellent video thank you, any chance of a link to said bulb please?
I have no idea what any of this means nor do I know how I got here but this is still pretty cool. It’s got me interested in learning more electronics and wiring.
I ve got the original Plumen CFL still works cosrts a leg i really like it
how many leds do you have that you kept because you plan to eventually re-use them in something that have been liberated from their original devices that you cant justify throwing out because leds used to cost $1-2-3, even 5 dollars each and even when you get 500 for the same price now, you cant throw them out because they are still good? lol im never going to use these tiny segments of rgb tape but i cant get rid of them either
Everyone has an LED box.
I was thinking about LED prices earlier in the week when looking at a 1000 LED Christmas lighting set in Lidl for £25. That includes a PSU, wiring, assembly, a nice retail box, and the shops profit. I wonder what the LED manufacturer gets per device ?
I don't like Chinese made goods, but I have to confess that sometimes they make curious devices such this, thanks by made reverse engineering on, I love it...
Where to get one? Can't find any one AliExpress or eBay.
Bought already 24V cob strip light as short addiction level countermeasure.
Please help!
This came from Temu. Use the website, not the app and pay with PayPal as a layer of security.
4:24 According to Google lens it says: Triac Dimmer. 🤔
I did get a horrible stomach feeling when I saw the Stanley blade being pressed rather firmly with a thumb so close to it's business edge.
Mr Clive!
I just got a new multimeter by FLIR.
I got an extra set of silicone leads like yours even! I watched some more of your videos on multimeters.
Have you got a fluorescent one of these? Would make an interesting video
No. Because the Plumen lamps are a fashion item and astronomically expensive.
Hey do you have a video in where you show you taking apart and blueprinting the device
Have you took apart your super shader tester yet?
Now playing: Prodigy - Firestarter........twisted firestarter
Wouldn't a clock escapement be more even than the fan governor? As i wrote that I thought perhaps it wouldn't be smooth enough
Could you take a look inside a Ge Current Led Hid bulb?
It's over my head...as...like with this unit, I'm not all that bright.
That circuit board looks absolutely chaotic. Each component is turned to a different angle. Really odd.
For your information; 可控硅调光器 = Triac dimmer
Do the devices that don't make it through the analysis process go into the bin, or is there a whole shed full of 15 years of lighting device parts and fake car tuner dongle fragments?
There's a lot of stuff here. Most gets rebuilt, but some gets scavenged for the worthy bits and then recycled.
Where did you buy the lamp tester?
Ali Express
AliExpress, but hard to find due to weird descriptions.
4:30 it says triac controlled dimmer
I've looked on eBay, and I can't see any of these lamps. Where did you get it, Big Clive? Was it from Temu? I always liked the twisted compact fluorescents, but never did have one.
It was from Temu.
I had a Plumen bulb. It looked great in a pendant fixture I had but died after a month.... too bad they cheaped out with the drive circuitry (I'm guessing since this seemed to be a common complaint)
Cool once again,, Thoughts on “guessing the product” if we sent you a random pcb to sort? Answer will be in the accompanying envelope or something like that 😂 I think that would be excellent content, but thats just me. Thanks Clive!!
Even a picture of both sides of the PCB could work.
@@bigclivedotcom indeed. I reckon thats a tad safer 🤣 oh the thoughts
Thanks for all your videos of LED bulbs. I'm trying to replace a 500W halogen bulb with an LED bulb but read that the LED has to be dimmer compatible and the dimmer switch has also to be LED compatible. Why the dimmer switch difference?
I don't believe there's much that makes a CFL/LED compatible TRIAC dimmer special. A dimmer made for incandescent lamps works just fine.
Of course if you don't have a dimmer than you don't need a dimmable LED belb.
You could read up on "Leading Edge" and "Trailing Edge" dimmers. Some dimmers can be configured to either depending on what your LED bulbs prefer.
Can you please link that Chinese tester
now make it into a glitter lamp!
Link where you can buy this lamp ?
Temu.
I did have a nice glass version of a single loop I think was similar circuitry, the unfortunately naked chip rings a few bells... Remove the numbers 😂
Plastic polycarbonate is not a fire risk, but I suspect they use polystyrene ...
I have tried to find schematics but haven’t.
Circuit board has SHPC-Z C on it, tried it with and without quotes, *.pdf, etc.
What is the secret to finding them?
Type with elbows only?
I doubt you'd find a PCB reference got many hits.
The Chinese in the 200R is ‘Controlled silicon dim’
can you make a video on how to make power bank out of disposable puff bar batterys in a safe way i would like to see that cause i have many of them
I'm not sure if it's even possible, every power bank tutorial I've seen claims all the lithium cells need to come from the same pack to be safe together, even before the requirement to have close-to-exactly equal voltages on each.
Can you go over how you made your Chinese tester safer?
I rewired it with copper wire and with the correct polarity.
Translation: "AC dimming control"
Clive's totally twisted as usual...
I'm the LED bulb, Twisted LED bulb...
Have you used adafruit nOOds? They are flexible led filament. I would like to use a 2S lipo battery to power two of them in series. They are 3v each and draw 50ma each as well. My maths say 22ohm resistor... Is my math correct?
Peak battery voltage 4.8V minus the 6V across the LED filaments, so 2.4 to drop across the resistor. The LED filaments wired in series will be 50mA for both, so R=2.4V/0.05A = 48 ohm. Closest standard value is 47 ohm.
@@bigclivedotcom THANK YOU for answering my question sir. The ohms law math you did is correct, but the 2s Lipo peak v=8.4volts. Is that a typo? Or is the math correct still? You rock for helping me out brother. THANK YOU
@@Epsonblade The two cells will charge up to 4.2V each, giving a total of 8.4V at a full charge. The usual 3.6 or 3.7V rating is the average voltage as the cell discharges from 4.2V down to about 3V.
I had this syle of lamp but it was a cfl. looked very spacy but dieded after 2-3 years
Now that LEDs are virtually everywhere I find them boring and I will continue using fluorescent lamps to be different from avarage people. Plasma is more interesting to me than solid state.
Smeg! :)
The Welsh Jeff Goldblum
Scottish. But close.
Damn so close - I’m a dumb yank so I guess that’s so so! Love the channel👏
zz top and ac/dc we introduce to you big Clive
Please get a EvoHeat and tear it a new one
SM2082EG circuits 1 part is wrong bro U need to see it
Do you watch Gruber Motor Company? They reverse engineer and repair old Tesla's...
"You're gonna need a bigger explosion containment pie dish".
Have you made the new circuit for it yet
How about now
Now
Not yet. I was wondering whether I should make a video doing it.
@@bigclivedotcom of course Why would you not
The chinese writing on that component says "Triac Dimmer"
I had never heard of that before but I'm assuming it's not actually in the circuit. Maybe it's optional
4:22 Nope. The allmighty Google translater states: "Triac dimmer". The chinese layouting girl thought it looked better when the headline was IN the box, not right in the middle top, where the engineer wrote it down on his filthy leave. 😉
04:22 - Google Lens insists that this means «Triac dimmer».