You know what Guys..
Most/all LED applications are Current Driven. Like put a nice driver in there and all is good to go....I expect a firing squad here...unless of course I make a bit of sense.
Just say for instance you do some sweet calculations. Your
Maximum Voltage across all can never go above the Maximum for any LEDs ever...
Therefore, a string cannot fail. No more Current ever that another one must handle.
Voltage derived. And therefore safe.
Am I making sense ??
Yes, LED's are current driven devices....but think about it when many are connected together
...
Just to re-iterate on my basic point:
1oo LED's of 2 in a string @ 20Ma per string. Driven with a Supply Voltage of 9 to 10 Volts. With a little 150R dropper resistor per string.
Stable supply voltage is 9 to 10 Volts....
If strings decide to fail, it wont bother the other working ones. Voltage is the thing.....
No other string has to work harder to handle excess current from the broken string...
And then they all fail getting hotter and hotter..
Classic stability with my stuff that has been reliable for Years. I use Voltage to control strings..
NOT Current. One string failure makes not another die.
Just a wee bit happier...
Yet to have a string die. So I cannot prove my theory to you all..but it seems to work.
Last I checked my little light had clocked 12240 Hours. Running 24/7.. on Mains.
Sometimes thrown around, dropped or abused. But always works.
@ 3 Hours a Day...(like NORMAL People) that is around 11 years of testing already.
Right is right.
Now I believe that is one cool friend. When you need it, it's there. Period...Especially in a strange room or a hotel..and need a pee ASAP....the more you think about a pee...the more urgent it gets...I peed on my (ex) Wives shoes once....could not find the damn light switch...
So I opened the Cupboard door....and peed there. On her shoes. That was that.
I thought it was the Loo. I kid you not.
My 2c here.
Regards,
tvtech