SCR, which is short for silicon controlled rectifier element, is a four layer structure of the three PN junction of power semiconductor devices, also known as the thyristor.
In comparison, I think the name of thyristor is more accurate.
Brake, a state can control the switch of the door.
Different from the real door, thyristor this door with just two states -
And off, it can not like ordinary door ajar, can 1, two-way free passage.
Bidirectional thyristor can be to the double, but must be controlled separately, which is completely different with the ordinary door.
Ordinary door open is open, and anyone no relationship through it.
Thyristor is not the case, when it is opened, there must be a certain amount of current flows through it, if the flow of electric current is lower than for its current, it will immediately turn off.
So, when use it, must give it a maintain its conduction of electric current.
Have these strange characteristics of thyristor, but was known as the silicon controlled rectifier, I always think it is not appropriate.
The SCR for the lamps and lanterns that move light, in the early time, it must have been as an invention, but also bring the world a lot of really convenient.
Silicon controlled dimmer load, in the early time is incandescent lamp.
Incandescent lamp as a silicon controlled rectifier load is better, don't have any problem.
Afterwards, its load is halogen lamp, it is still very good.
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