independent matching GU10
25/10/2013 08:27
2, the overall parallel form
2.1 Simple parallel form
Simple parallel in both LED1-n parallel work on the withstand voltage of each LED is equal . Seen from the characteristics of the LED , which is a current- type device , the voltage applied to the LED small changes will cause a large change in current . Furthermore, since by the LED manufacturing technology limitations, even of the same batch of LED, the performance difference is inherently present , so the LED1-n operation, the current flowing through each LED are not equal . Thus, the current distribution of each LED can not make too much current LED life LED Strip dropped, and even burn . Although this connection is relatively simple, but the reliability is not high , especially for large number of cases, LED applications to use more likely to cause failures.
2.2 Parallel form independent matching GU10
Against 2.1 in the presence of reliability problems in parallel form independent matching is a good way . In this way, each LED has its own adjustable current (drive the V + output respectively L1-n), to ensure the current flowing through each LED in the required range . Has driven effect, protect the integrity of a single LED , failure does not affect the other LED work , you can match with a large difference in LED and other features. The main problems are: the composition of the entire drive circuit is more complex, high cost devices , taking up a large volume , does not apply to a large number of LED circuit .
