Tanghua's newly released LED street light (picture from Tanghua)
Tanghua said that the new product also uses high-quality lenses to reduce the formation of light spots and improve light transmission. The new design increases the heat dissipation area, which also extends the life of the LED street light and reduces the maintenance rate.

Bi Directions Thyristor (Triac)
Bi Directions Thyristor (Triac) is equivalent to the antiparallel connection of two unidirectional thyristors, but only one control pole.
Bidirectional thyristors are made of N-P-N-P-N five-layer semiconductor materials, and three electrodes are also derived from the outside. Its structure is shown in the figure. Bi-directional thyristor volt-ampere characteristic curve Since the forward and reverse characteristics of the bidirectional thyristor are symmetrical, it can be turned on in any direction and is an ideal AC switching device.
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