Note that in real use the 5W lamps are showing signs of heat related failure. So it may be better sticking to the more sensibly rated 3W units.
Poundland is currently engaging in rapid evolution of its range of LED lamps with a really surprising range of 3W, 5W and 6W LED lamps. I started looking at them with a view to covering them all in one video, but had to restart with just the most recent when they turned out to be somewhat more interesting than I had expected.
The most notable features are the use of multi-chip LEDs to fit a lot of LED chips in series in a smaller number of packages, plus the use of X2 suppression capacitors in the capacitive dropper circuit.
Poundland is currently engaging in rapid evolution of its range of LED lamps with a really surprising range of 3W, 5W and 6W LED lamps. I started looking at them with a view to covering them all in one video, but had to restart with just the most recent when they turned out to be somewhat more interesting than I had expected.
The most notable features are the use of multi-chip LEDs to fit a lot of LED chips in series in a smaller number of packages, plus the use of X2 suppression capacitors in the capacitive dropper circuit.
Sir, we're going to need an official compare & contrast definition for "spudging" and "hoiking"… 🤔🤔
We had one of the globe lamps in our kitchen that literally exploded and set on fire thank God I was home to stop it, I haven't seen anything else bad about these lamps but the capacitor seemed to just pop and set on fire it didn't trip a switch either I've been scared off…
And I thought I was fussy about led lamps, obsessing about colour temperature and lighting angle. But you must be an absolute nightmare!
I'm curious about the 4.5 millihenry 26 ohm dc choke. 4.5 millihenry is about 1400 ohms inductive reactance at 50hz + 26 ohms resistance.
How does that compare to the 4.7 ohm resistor. I see quite a difference. But, I can't explain how the inductor and the capacitor on the other side of the AC line react together to limit current. Can you go through the math on that. Or, someone? The diodes and the then the series leds gets me confused in the math of the whole thing.
Your meter does read inductors from the looks of it. What is the F line or readings on the left side of your dial?
CLIVE Invents Overhead Projector !!!!!
Much better than bulbs I paid five times the price for. I bought about ten Poundland Led bulbs about a year ago and they still work. I use them every day for about fourteen hours.
At the start I accidently had the video on 0.5x and I thought you were drunk lol
Hi Clive or anyone else wanting to comment. I've bought a couple of similar bulbs from home bargains which are "dimmable" , I thought I might be able to get an arduino to control them for an aquarium to simulate dusk and Dawn (say 15 mins), but it looks like I have to mess with a zero crossing module and all it entails programming-wise. I'm just wondering if I could just use a R.C combination between the power module and the actual LEDS panel. Any advice would be really appreciated.
Thats a quids worth up the spout! 😫
Hi Clive. I've just torn down one of the smaller 5w golfball lamps thats failed after about a year of moderate use, it has very little heatsinking & no ventilation. The led chips are scorched/darkened, one has popped (shown as a black dot in the middle of the phosphor). The reverse of the pcb is visibly yellowed/scorched as well. Maybe the larger aluminium heatsink in other lamps would help with this, but yes it seems your right, that they are being overdriven. A smaller value capacitor dropper would solve this. Planned obsolescence me thinks.
My GU10 3W Poundland LED has just died after 4 years. I've just picked up a 5W e-luminate LED from Home Bargains for £1.49 which is stated to have a 25-year lifespan. It's a 370 lumens, 6500K daylight bulb which emits a pleasing hue for bedtime book reading.