How many different types of leds are there?

Led can also be divided into ordinary monochrome led, high brightness led, ultra brightness led, color changing led, scintillation led, voltage controlled led, infrared led and negative resistance led, etc.

LED control mode is divided into constant current and constant voltage, there are a variety of dimming methods, such as analog dimming and PWM dimming, most of the LED is the constant current control, because this can maintain the stability of LED current, not easy to be affected by VF changes, can extend the service life of LED lamps.

Common monochrome light-emitting diodes common monochrome light-emitting diodes have the advantages of small size, low working voltage, small working current, uniform and stable luminescence, fast response speed and long life, etc., which can be lit up by various dc, ac and pulse power sources.

It belongs to the current control type semiconductor devices, the use of the need to connect the appropriate current limiting resistance.

The color of an ordinary monochrome led depends on the wavelength of the light, which in turn depends on the semiconductor material used to make it.

The wavelength of red led is generally about 650~700nm, the wavelength of amber led is generally about 630~ 650nm, the wavelength of orange led is generally about 610~ 630nm, the wavelength of yellow led is generally about 585 nm, and the wavelength of green led is generally 555~570 nm.

Commonly used domestic ordinary monochrome led has BT (factory standard model) series, FG (ministry standard model) series and 2EF series.

Common imported monochrome leds are SLR series and SLC series.

High-brightness monochromatic leds high-brightness monochromatic leds and ultra-high-brightness monochromatic leds use different semiconductor materials than regular monochromatic leds, so the intensity of the light they emit varies.

Typically, high-brightness monochrome leds use materials such as gaas, while ultra-bright monochrome leds use materials such as GaAsInP, while ordinary monochrome leds use materials such as GaP or GaAsP.

A light-emitting diode that changes color.

Light-emitting diodes (leds) that change color can be divided into dichromatic leds, trichromatic leds, and polychromatic (red, blue, green, and white) leds.

Photochromic led can be divided into two photochromic led, three photochromic led, four photochromic led and six photochromic led.

The commonly used two-color led has 2EF series and TB series, and the commonly used three-color led has 2EF302, 2EF312, 2EF322 and other models.

Blinking light-emitting diode (BTS) is a special light-emitting device composed of CMOS integrated circuit and light-emitting diode.

Flashing leds do not require external components when in use, but simply add a suitable dc operating voltage (5V) to both ends of their pins to make them glow.

Voltage-controlled light-emitting diodes common light-emitting diodes belong to current-controlled devices and require current limiting resistors with appropriate resistance values in series for use.

Voltage controlled light-emitting diode (BTV) is the light-emitting diode and current-limiting resistor integrated production as a whole, and can be directly connected to the power supply at both ends.

This makes the common red light emitting diode, the voltage can work in 3-10 volts such as YX503URC, YX304URC and YX503BRC voltage LED LED, providing a greater choice for engineering technology developers.

Infrared light-emitting diodes, infrared light-emitting diodes (leds), also known as infrared light emitting diode, it can be directly convert electrical energy into infrared radiation (not visible) and can go out of the light-emitting device, mainly used in a variety of optical and radio transmission circuit. The structure, the principle of infrared light-emitting diodes (leds) similar to ordinary light emitting diode, is that they use different semiconductor materials.

Infrared light-emitting diodes are typically made of materials such as gallium arsenide (GaAs) and gallium aluminum arsenide (GaAlAs) in all-transparent or light-blue, black resin packages.

Common infrared light-emitting diodes include SIR series, SIM series, PLT series, GL series, HIR series and HG series, etc.