Si hai ragione li ho visti, sembrano lampadine old style.
Chiedevo cosa c'è dentro le led in discussione.
Chiedevo cosa c'è dentro le led in discussione.
Infrared | ? > 760 | ?V < 1.63 | Gallium arsenide (GaAs) Aluminium gallium arsenide (AlGaAs) |
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Red | 610 < ? < 760 | 1.63 < ?V < 2.03 | Aluminium gallium arsenide (AlGaAs) Gallium arsenide phosphide (GaAsP) Aluminium gallium indium phosphide (AlGaInP) Gallium(III) phosphide (GaP) |
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Orange | 590 < ? < 610 | 2.03 < ?V < 2.10 | Gallium arsenide phosphide (GaAsP) Aluminium gallium indium phosphide (AlGaInP) Gallium(III) phosphide (GaP) |
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Yellow | 570 < ? < 590 | 2.10 < ?V < 2.18 | Gallium arsenide phosphide (GaAsP) Aluminium gallium indium phosphide (AlGaInP) Gallium(III) phosphide (GaP) |
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Green | 500 < ? < 570 | 1.9[70] < ?V < 4.0 | Traditional green: Gallium(III) phosphide (GaP) Aluminium gallium indium phosphide (AlGaInP) Aluminium gallium phosphide (AlGaP) Pure green: Indium gallium nitride (InGaN) / Gallium(III) nitride (GaN) |
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Blue | 450 < ? < 500 | 2.48 < ?V < 3.7 | Zinc selenide (ZnSe) Indium gallium nitride (InGaN) Silicon carbide (SiC) as substrate Silicon (Si) as substrate—under development |
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Violet | 400 < ? < 450 | 2.76 < ?V < 4.0 | Indium gallium nitride (InGaN) | |
Purple | Multiple types | 2.48 < ?V < 3.7 | Dual blue/red LEDs, blue with red phosphor, or white with purple plastic |
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Ultraviolet | ? < 400 | 3.1 < ?V < 4.4 | Diamond (235 nm)[71] Boron nitride (215 nm)[72][73] Aluminium nitride (AlN) (210 nm)[74] Aluminium gallium nitride (AlGaN) Aluminium gallium indium nitride (AlGaInN)—down to 210 nm[75] |
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Pink | Multiple types | ?V ~ 3.3[76] | Blue with one or two phosphor layers: yellow with red, orange or pink phosphor added afterwards, or white phosphors with pink pigment or dye over top.[77] |
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White | Broad spectrum | ?V = 3.5 | Blue/UV diode with yellow phosphor |
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