I bought an interesting looking grow light on eBay and after buying one I was sent a nearly identical failed unit. Let's take a look at the LED panel and the driver of the failed one to see what happened.
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Then are the power supplies causing the LED failures or are the LEDs causing the power supplies to fail, or is it a heat issue?
Classic spark, is it live? I'll touch it to find out! 😂 The amount of French sparks I've seen jump and shout MR2 finding out that the old decrepit cables in old ruined houses that Brits had bought were still live!
Engraved chips are easier read when you smear a very thin layer of heat sink compound on them
Nothing like a bit of capacitor vomit….
Swampedoutness. (Added to Dictionary).
This one is awesome!! Your camera work is great!! I can see EVERYTHING!! Thanks Again Clive. Wow, did you see the clarity and detail? Oh. Clive, I was talking to this guy over here. Carry On! 😉 Love Scots. Love Isle of Man. Love Motorcycles. Love learning Electronics; especially "Clive" style teaching.
The IR should have been in series with the UV to ballance it
Is the wattage intentionally misleading or is it that wattage has been used as a measure for brightness for such a long time that the lights are marked with the equivalent incandescent wattage instead of their actual draw. would the illumination be equal to a 28 watt incandescent ?
I've heard some hydroponics growers call these "Lie Emitting Diodes".
I ended up making my own, I bought a cheap spot light for the automobile and removed the lights and created a specific set of LED's but I matched my colors separately . the other type grow lamps are those that have the orange color phosphorus over the led's and I didnt like that, I wanted to choose for myself what arrangement was assembled, it is a little bit of work, I didn't use the SMT chips just the 1W and or the 3W chips with a lens, had some interesting effects, I wonder if one day I have this tall beanstalk that reaches the clouds? LOL
Canadian here – we can legally grow up to four plants of the devil's weed, but the seeds or clones must be purchased from a licensed dealer so you end up in possession of a formal receipt. Having the plants or the product absent proof-of-purchase is a criminal act. Insanity, but that's what you get when politicians get into your business. BTW, I'd strongly recommend buying quality lights from reputable manufacturers – both you & your plants will appreciate the difference… lol
Please explain the significance of a "fizz" of electrical equipment. I'm not joking. I've got a battery charger which runs off a "bargain" 12v adapter (including sleeved earth pin). Every time I'm using the charger if I run my finger against the metal body of the charger I can feel a vibration. It's not the surface of the charger- it doesn't happen when it's switched off. Any simple tests to be done with a DMM?? COuld it just be floating chasis ground due to the sleeved earth pin?
gradually upping the voltage is misleading since red leds are more resistive
any white leds will draw more than the the blue with the same chips, because of the increased heat by the phosphor