Just when you thought they couldn't make an LED lamp simpler than the common linear regulator type, they come out with this.
It's basically a single package combining the rectifier and current regulator into a single package.
These lamps work by using enough multi-chip LEDs in series to approach the normal mains voltage, but then use a linear current regulator to keep the current constant by acting as an active resistor, with a small voltage dropped across it.
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It's basically a single package combining the rectifier and current regulator into a single package.
These lamps work by using enough multi-chip LEDs in series to approach the normal mains voltage, but then use a linear current regulator to keep the current constant by acting as an active resistor, with a small voltage dropped across it.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
https://www.patreon.com/bigclive (extra streams and channel interaction)
Or alternatively:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
Can you repurpose these linear regulator circuits for custom light bulbs at lower voltages? Say 12v? I want to see if I can make a fog light bulb using warm white filament leds. I suppose I could just use a resistor selected to run at 14v? Unfortunately i cant imagine 12v filament LEDs are as good as the ones you get in mains bulbs, which require about 65v for the forward voltage. Im very tempted to boost the voltage upto 65-70v to use the better quality LEDs 😅
I was looking for a schematic of this chip. I have a similar JWB19818 chip but the principle of operation is identical. Polish LED bulb from RPC. I just want to change the resistor before it melts. By the way, greetings from Poland to everyone
Have you made a Video of 5G Street lamps some them are like purple
I have a box of GT-Lite bulbs with this chip, very dodgy, one of which started flickering intermittently today. Tore down and found the line and neutral wires are switched (according to the pcb markings). Wonder if that would contribute to early failure or if it's a garden variety overdriven bulb. My experience with rectification is minimal.
do you think this design can pass IEC 62560:2015 ?
I have a similar lamp with the same chip. But now I also have 1 that is the same but with a BP5133XJ chip. I can send a photo if you are interested. There is also a datasheet in chinees avalible.
HNY Clive! Very interesting and informative video Sir. Would be interesting to see what sort of spurious noise these simplified LED circuits put out. EMC and RFI are serious issues that tend to be ignored by so many designers these days, especially if You select Your purchase by Lowest Price. Still got to be much better than the naff 'Buck' circuits that were once very common. With no chokes or filters many of the older mains driven LED lamp designs simply injected radio frequency noise into the mains wiring! As A licensed amateur radio operator I have binned many lamps that were generating RFI disrupting licensed radio operation. Hopefully these new units will be 'quiet' in operation. Someone Please give Big Clive a decent RF spectrum analyzer, I'm sure he would put it to very good use 'sniffing RF' from all manner of gadgets and gizmos. 🙂
Clive where can i find Your contact info to send photos of odd & interesting circuits?
Thanks for your efforts to share with us! Got a data sheet link, or supplier link? Not Mouser, Digikey, or Element14 = Odd.
Well i have a really cheap LED lamp that only uses a smd rectifier, 1 electrolyte capacitor, and 1 film capacitor. It's really bad that i had 3 cases of exploded electrolyte capacitor. I still got some of them working though
Il cip è responsabile della gestione del tempo di funzionamento della lampada led?
Obsolescenza programmata, forse no ma svariate lampade vendute per durare 10 anni con 100000 ore di funzionamento si fulminano dopo 6/8 mesi, le ho esaminate e in alcune di marca conosciute ho trovato il cip, che svolge sicuramente la funzione di alimentatore ma cosa altro ancora, visto che le lampade "rotte" anno i led perfettamente funzionanti?
Meditate, gente.
I have a Question to the cheaper diming without capacitor: Do they flicker because they use PWM oder is there something wit AC and Mosfets, that takes it off synk?
In my understandig, it should not flicker visibly if you understand PAL/NTSC an set it right. Is this correct?
(Sorry for my english…)
What is the voltaje of the every LED?