The difference between a silicon controlled light source and a controlled silicon dimmer
PWM to make out a light one on the damage to the eyes, the movie is 24 images per second, when less than this value, the eyes can distinguish between light and shade, old fluorescent lamp inferior often feel tired, to find the time to read it is 50 hz, when more than 100 hz, will reduce a lot of damage to people. The connection method is basically correct. But the power supply is the output of two lines.
Thyristor has three modes of dimming in the communication application. Intermittent; Phase shift. These are the least damaging to the eye, but the price is high; The device life of the wave mode is long and the external interference is small. The application in dc is the same as PWM.
Thyristor is used for dimming, ac and dc applications, and PWM can only be applied to dc.
