COB (Chip On Board) LED have an exceptionally large light emitting surface: multiple LED chips are mounted directly onto a substrate or circuit board.
These LED chips are arranged closely together and covered with a phosphor coating or resin to enhance light output and color uniformity. They typically come on aluminum modules.
COB LED are simpler to manufacture and cheaper. The close proximity of multiple LED on a common substrate yields a high and uniform light output, allows for various shapes and forms and provides good heat dissipation.
The many different LED on a COB are partially connected in series and partially connected in parallel to design a particular desired total forward voltage. They often can be connected directly to voltages like 12-13V without the need of series resistors or constant voltage/constant current power supplies.
Comments
Please do leave comments below. I am using utteran.ce, an open-source and ad-free light-weight commenting system.
Here is how your comments are stored
Whenever you leave a comment, a new github issue is created on your behalf.
-
All comments become trackable issues in the Github Issues section, and I (and you) can follow up on them.
-
There is no third-party provider, no disrupting ads, and everything remains transparent inside github.
Github Users Yes, Spammers No
To keep spammers out and comments attributable, all you do is log in using your (free) github account and grant utteranc.es the permission to submit issues on your behalf.
If you don’t have a github account yet, go get yourself one - it’s free and simple.
If for any reason you do not feel comfortable with letting the commenting system submit issues for you, then visit Github Issues directly, i.e. by clicking the red button Submit Issue at the bottom of each page, and submit your issue manually. You control everything.
Discussions
For chit-chat and quick questions, feel free to visit and participate in Discussions. They work much like classic forums or bulletin boards. Just keep in mind: your valued input isn’t equally well trackable there.
(content created Mar 23, 2024)