So i have a thing for transformers. Tiny ones, large ones, Im a hoarder and collect junk.
Has anybody looked into using LED drivers either contant voltage or constant current. In their audio world.
I picked up a huge box of blown LED bulbs in various wattages from the scrap yard.
They have a lot of parts on the little PCB. From transformers, to inductors to capacitors.
Before I go down the rabbit hole of trying to understand the various drivers how they work.
Has anybody else had this idea ?.
So far I have been just pulling polar caps off them. Decent quality well at least better than the china junk we get in our markets. 90% of the failures are LED failure or Electrolytic capacitor failure. Nothing ever happens to the other parts. On many the PCB is still working fine ie. you input 220vc and it outputs 12 v or 24v d/c.
I plan to hook up the output to the scope and start studying the circuits.
Has anybody looked into using LED drivers either contant voltage or constant current. In their audio world.
I picked up a huge box of blown LED bulbs in various wattages from the scrap yard.
They have a lot of parts on the little PCB. From transformers, to inductors to capacitors.
Before I go down the rabbit hole of trying to understand the various drivers how they work.
Has anybody else had this idea ?.
So far I have been just pulling polar caps off them. Decent quality well at least better than the china junk we get in our markets. 90% of the failures are LED failure or Electrolytic capacitor failure. Nothing ever happens to the other parts. On many the PCB is still working fine ie. you input 220vc and it outputs 12 v or 24v d/c.
I plan to hook up the output to the scope and start studying the circuits.
@MarcelvdG My day job is playing with 40,000 Volts in ignition systems. Building and testing.
Anyway here is a small start or intro to the subject. Lets see what I can use these for other than pulling parts.
https://www.1000bulbs.com/pdf/understanding-led-drivers.pdf
Anyway here is a small start or intro to the subject. Lets see what I can use these for other than pulling parts.
https://www.1000bulbs.com/pdf/understanding-led-drivers.pdf
Any electronic parts inside an LED bulb will have been worked to death by the time the bulb fails. They are built as cheaply as possible. Their environment is often harsh (extreme heat and cold). I would never use anything inside the bulb in a build, but for experimenting why not?
Marketing touts the bulbs as lasting 7-14 years. My experience is that when used in an outside fixture (extreme heat and cold in my environment) lifespan is two years max. Inside the house it's 4 years max.
I still use them because as expensive as they are, using them saves money on the electric bill, and their performance is unquestionably superior to other types of lights that were available (incandescent and CFL).
Marketing touts the bulbs as lasting 7-14 years. My experience is that when used in an outside fixture (extreme heat and cold in my environment) lifespan is two years max. Inside the house it's 4 years max.
I still use them because as expensive as they are, using them saves money on the electric bill, and their performance is unquestionably superior to other types of lights that were available (incandescent and CFL).
I find the components inside the bulbs say a brand like philips to be better quality than the china junk parts that are sold in my country. Like I said the only part that seems to take a beating are the electrolytic caps. Nothing every happens to the tiny transformers ICs or polyester caps. I still have a lot os studying to do to see how clean the power is and if they can be applied to audio.
Now driver on board bulbs are in production.
Nothing can be salvaged.
Retail 15 Rupees for the board in 9W
Wholesale less than 7 Rupees...
Nothing can be salvaged.
Retail 15 Rupees for the board in 9W
Wholesale less than 7 Rupees...