I have purchased some cheap LED China bulbs but the LED's keep burning up. In an effort to improve them I have opened some up and done some measurements.
With a 220/240 AC input and after some resistors, capacitors and a AC/DC converter the output to the LED's is 140v DC.
If you divide this by the 36 LED's we get close to 3.9v per LED! These are 5730 SMD's and I belive this is why they burn out so fast.
If I add more LED's say 50 LED's would this bring down the voltage across the LED's to 2.8v and would this extend the life of the LED's?
I have tried this in practice by soldering a long strip of LED's and the light is still at a good brightness and LED strips do not heat up.
With a 220/240 AC input and after some resistors, capacitors and a AC/DC converter the output to the LED's is 140v DC.
If you divide this by the 36 LED's we get close to 3.9v per LED! These are 5730 SMD's and I belive this is why they burn out so fast.
If I add more LED's say 50 LED's would this bring down the voltage across the LED's to 2.8v and would this extend the life of the LED's?
I have tried this in practice by soldering a long strip of LED's and the light is still at a good brightness and LED strips do not heat up.