Mar 23, 2019 · COB: 1) COB chips normally have 9 or more diodes. Moreover, COB chips also have 1 circuit and two contacts, regardless of the number of diodes. This simple circuit design is the reason for the panel-like presence of COB LED light where on the other hand, SMD light, appears like a group of smaller lights. 2) Though, COB LED lights cannot be used ...
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