IPhone 13 aims to minimize the environmental impact, including the antenna made of recycled plastic bottles (the first in the industry), and the use of 100% recycled metal in MagSafe magnets, motherboard welding materials, battery cells, motherboard electroplating and front and rear camera wires.
Energy-saving lamp:
There are two kinds of energy-saving lamps: one is integrated, and this kind of energy-saving lamp is generally made into a screw cap, which is convenient to replace incandescent lamps. The bulb has a built-in ballast and cannot be dimmed. There will be problems with the knob switch that can adjust the pressure. The other is split type, that is, the bulb is externally connected with an independent ballast.
There are two kinds of ballasts, inductive ballasts and electronic ballasts. This split energy-saving lamp is mainly pin-type, generally divided into two types, one is two-pin and the other is four-pin. The two-pin type has a built-in trigger (light source starting device), which can only be connected with the inductive ballast.