Gentle-Emitting Diodes (LEDs) > 자유게시판

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

Congratulations, you recognize the basics! Maybe you have even gotten your palms on a couple of LEDs and began lighting stuff up, that is awesome! How would you like to step up your blinky recreation? Let's speak about makin' it fancy outside of your customary LED. Here is the forged of different characters. RGB (Red-Inexperienced-Blue) LEDs are actually three LEDs in a single! However that doesn't mean it could possibly only make three colors. Because purple, EcoLight dimmable green, and blue are the additive primary colours, you'll be able to management the depth of each to create every color of the rainbow. Most RGB LEDs have four pins: one for every shade, and a common pin. On some, the frequent pin is the anode, and on others, it's the cathode. Some LEDs are smarter than others. Take the cycling LED, for example. Inside these LEDs, there's really an built-in circuit that enables the LED to blink with none outside controller.

This is a closeup of the IC (the large, black square chip on the tip of the anvil) controlling the colours. Simply power it up and watch it go! These are nice for projects where you want somewhat bit more motion but haven't got room for control circuitry. There are even RGB flashing LEDs that cycle through 1000's of colors! Different kinds of LEDs might be managed individually. There are different chipsets (WS2812, APA102, UCS1903, to call a couple of) used to control a person LED that's chained collectively. Below is a closeup of a WS2812. The bigger square IC on the suitable controls the colors individually. What is that this magic? An LED with a built-in resistor? That's right. There are additionally LEDs that embrace a small, EcoLight present limiting resistor. If you happen to look carefully on the picture beneath, there's a small, black square IC on the publish to restrict the current on all these LEDs. So plug the LED with built-in resistor to your power source and mild it up!

SMD LEDs aren't a lot a specific sort of LED however a bundle type. As electronics get smaller and smaller, manufacturers have found out learn how to cram more parts in a smaller house. SMD (Floor Mount System) components are tiny variations of their normal counterparts. Here is a closeup of a WS2812B addressable LED packaged right into a small 5050 bundle. SMD LEDs are available in several sizes, from pretty large to smaller than a grain of rice! Because they're so small, and have pads as a substitute of legs, they're not as easy to work with, but when you're tight on area, they is likely to be simply what the doctor ordered. SMD LEDs also make it simpler and quicker for decide and place machines to populate a number of LEDs onto PCBs and strips. You'll most likely to not manually solder all of these components by hand. Excessive-Power LEDs from manufacturers like Luxeon and CREE, are loopy vibrant.

These are brighter than the tremendous brights! Typically, an LED is taken into account High-Power if it can dissipate 1 Watt or extra of energy. These are the fancy LEDs that you discover in really nice flashlights. Arrays of them can even be constructed for spotlights and automobile headlights. Because there's a lot energy being pumped via the LED, these usually require heatsinks. A heatsink is basically a chunk of heat conducting metal with numerous floor area whose job is to switch as much waste heat into the encircling air as potential. There could be some heat dissipation constructed into the design of some breakout board such because the one proven beneath. Excessive-Power LEDs can generate so much waste heat that they will injury themselves without proper cooling. Do not let the term "waste heat" idiot you, although, these gadgets are still incredibly environment friendly in comparison with typical bulbs. To manage, you might use a constant present LED driver.