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调光LED与传统TRIAC调光器
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调光LED与传统TRIAC调光器
TRIAC调光器设计用于电阻性负载如白炽灯或卤素灯，有一个显着的安装基础，在美国和世界各地的。不幸的是，这些相位控制调光器是不容易兼容的LED由于LED不显示为阻性负载。因此，基于LED的解决方案，使用传统的LED驱动器将无法按预期与可控硅调光器壁。
The TRIAC is a semiconductor triode that features two terminals and a gate. It may help to think of the TRIAC as two silicon controlled rectifiers （SCRs）， which are a type of thyristor， placed back to back. A typical SCR has four layers of alternating P-type and N-type semiconductor material.
An SCR turns off when no current is flowing through it， and it can be switched on when a current is applied to its gate. An SCR conducts current in a single direction， but a TRIAC can conduct current in either direction， which is why a TRIAC looks like two SCRs.
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