How to Use LED
No one in my science class at school had ever even heard of them.
This is an easy introduction to LED's that should teach you the basics. It's good if you're interested but have no idea where pandora jewelry rings sale to start. So common on Instructables. What the heck are they?LED is an acronym for Light Emitting Diode. Well, you ask, what on earth is a diode. A diode is a device that, in simplest terms, allows electricity to flow through one way but not the other. Those of you pandora gold pendant who are knowledgeable about mechanical things could think of it as sort of a check valve.
Another important thing about all LED's (and all diodes) is that every one of them has exactly two electrodes. These are important to know when you are wiring an LED into a circuit.
Step 3: Advantages of LED's
LED's are great for many reasons. First of all, they don't heat up like regular lightbulbs do. This is great because, well, you don't burn yourself. They are also smaller than a lightbulb. Another important thing about LED's is that they run on very low amounts of electricity, which is helpful because it makes them safer to work with (you don't electrocute yourself). Most run on about 20mA.
Step 5: Resistors
It always helps to wire a resistor into your circuit. It will make the LED last longer by dropping the voltage. There are some sites that make it easy to find which resistor you need. My favorite is here.
Step 6: Project Ideas
Now that you have some knowledge of what LED's are you might want some project ideas. It's easy. Anything involving light. And it's not even limited to that. You can check out the LED Contest for some ideas. The Instructable that I want to enter into the contest is a "Reminder Table" which is a little table with a number of sections (mine has four) that you put things in to remind you to do them. Each section lights up a different color. The idea is that you turn each light on when you have something that you need to remember to do, then off when you accomplish that. I want to use it to remember my practice cards, guitar picks etc. One of my favorite ideas in the contest is the Star Wars Blaster, which opens up a whole other area of project ideas.
Step 7: Now You're Ready!
With these "Tool Tips" (sorta) and a completed LEDucation (sorry, couldn't resist) I hope you can get out and build some cool LED projects. Remember, I really do appreciate any type of feedback or ratings.
Hi, I recently picked up an antique light bulb with a crusifix inside the bulb. Unfortunately, it does not work. I would like to modify the bulb and add an internal led. Any suggestions would be greatly appreciated. Denny
A few tips;
Often LED have equal length so to work out which one is which, look closely inside the plastic with a mag glass, the negative is the side with the bigger surface area, or looks like an upside down The power supply is often 12 volts sale pandora charms DC (a battery, or transformer). But can be 3 volts to about 30 volts DC, (Normally.
It is best practice to fit it between the Positive of the LED and the pandora jewelry earrings power supply positive terminal.
LED can be bought in various shapes, round, square, rectangle, and in various colours, red, green, yellow, orange and blue. Hope the photo helps.
Prev: discount pandora charms authentic
Next: pandora beads and charms