Teardown of filament style LED lamp. (Awesome lamp!)

I have to start by saying that these lamps look fantastic. They are manufactured as if they are glass lamps, but use big long filaments made of strings of LEDs mounted on strips. This completely reverses the trend of trying to run small numbers of LEDs at high current with voltage dropping circuitry, and instead works by running large quantities of LEDs at low current. This also makes the drive circuitry much simpler, but does limit their ability to be dimmed.
I really enjoyed taking this lamp to bits as you'll see in the video. The circuitry was really simple and interesting.
It uses an SM2082B chip which appears to be a linear current regulator which has its current programmed by an external resistor. This particular version appears to have two regulators on board. The power supply is simply a 47 ohm resistor, rectifier, 4.7uF 400V smoothing capacitor with 1M discharge resistor, and the chip itself with two programming resistors (100 ohm and 120 ohm??). The bulk of the voltage is dropped across the four LED strips in series. Each strip seems to have about 24 chips giving a potential voltage drop of around 290V meaning that the chip has to drop about 40V at probably around 15mA giving it a dissipation of about 0.5W. If the chip does overheat it self regulates the current downwards to compensate.
This is such a fresh and simple approach to LED lamps. It looks stunning, puts out a LOT of light in a very even distribution and runs barely warm to the touch.
I think we're going to see a LOT more of these appearing. I already see similar versions using COB strips and not even attempting to look like a filament.
The large series array of LEDs also lends itself well to capacitive droppers as you'll see when I power the globe from a cobbled together power supply. It could even be powered from a simple resistor and rectifier for visual effect.
For me this is one of the most exciting developments in LED lamps yet.