How to choose the right LED bulbs

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What is LED?

A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a single wavelength. The output from an LED can range from red (at a wavelength of approximately 700 nanometers) to blue-violet (about 400 nanometers). Some LEDs emit infrared (IR)energy (830 nanometers or longer); such a device is known as an infrared-emitting diode (IRED).

An LED or IRED consists of two elements of processed material called P-type semiconductors and N-type semiconductors. These two elements are placed in direct contact, forming a region called the P-N junction. In this respect, the LED or IRED resembles most other diodetypes, but there are important differences. The LED or IRED has a transparent package, allowing visible or IR energy to pass through. Also, the LED or IRED has a large PN-junction area whose shape is tailored to the application.

Why LED?

  • Low power requirement: Most types can be operated with battery power supplies.

  • High efficiency: Most of the power supplied to an LED or IRED is converted into radiation in the desired form, with minimal heat production.

  • Long life: When properly installed, an LED or IRED can function for decades.

  • Environment Friendly– Low mercury, No UV
  • Save your electrical bill

Typical applications include:

  • Indicator lights: These can be two-state (i.e., on/off), bar-graph, or alphabetic-numeric readouts.

  • LCD panel backlighting: Specialized white LEDs are used in flat-panel computer displays.

  • Fiber optic data transmission: Ease of modulation allows wide communications bandwidth with minimal noise, resulting in high speed and accuracy.

  • Remote control: Most home-entertainment “remotes” use IREDs to transmit data to the main unit.

  • Optoisolator: Stages in an electronic system can be connected together without unwanted interaction.

 

What is Lumen?

When you’re shopping for LED bulbs compare lumens to be sure you’re getting the amount of light, or level of brightness, you want.

Think Lumens, Not Watts

We typically buy things based on how much of it we get, right? When buying milk, we buy it by volume (gallons). So, why should light be any different? For decades, we have been buying light bulbs based on how much energy they consume (Watts) — no matter how much light they give us (Lumens).

What’s a Lumen?

Lumens measure how much light you are getting from a bulb. More lumens means it’s a brighter light; fewer lumens means it’s a dimmer light.

Lumens are to light what

  • Pounds are to bananas
  • Gallons are to milk

Lumens let you buy the amount of light you want. So when buying your new bulbs, think lumens, not watts.

The brightness, or lumen levels, of the lights in your home may vary widely, so here’s a rule of thumb:

  • To replace a 150-watt incandescent bulb, look for a bulb that gives you about 2600 lumens with LED wattage 25-28 Watt. If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens.
  • Replace a 100 watt with an LED bulb that gives you about 1600 lumens with LED wattage 16-20W.
  • Replace a 75W bulb with an LED bulb that gives you about 1100 lumens with LED wattage 9-13Watt.
  • Replace a 60W bulb with an LED bulb that gives you about 800 lumens with LED wattage 8-12 Watt.
  • Replace a 40W bulb with an LED bulb that gives you about 450 lumens with LED wattage 6-9 Watt.
  • Replace a 25 w bulb with LED bulb that gives you about 180 lumens with LED wattage 3 watt.

Why some of our product are not suitable for enclosed fixture?

You probably know that LED bulbs run dramatically cooler than their incandescent cousins, but that doesn’t mean they don’t produce heat. LED bulbs do get hot, but the heat is pulled away by a heat sink in the base of the bulb. From there, the heat dissipates into the air and the LED bulb stays cool, helping to keep its promise of a very long life.

And therein lies the problem: the bulb needs a way to dissipate the heat. If an LED bulb is placed in an enclosed housing, the heat won’t have anywhere to go, sending it right back to the bulb, and sentencing it to a slow and painful death.

Consider where you’d like to place your LED bulbs. If you have fully or semi-enclosed fixtures you need to light up, look for LEDs that are approved for recessed or enclosed spaces.

 DIMMABLE and NON-DIMMABLE:

QUESTION: Can all LED lights be dimmed?
ANSWER: NO! Not all LED lights can be dimmed. Dimmable LEDs generally cost a little bit more than the non- dimmable LED bulbs.

QUESTION: How do I know if my new LED can be dimmed?
ANSWER:
If an LED light is dimmable it will say “DIMMABLE or NON-DIMMABLE on the box or packaging the LED bulb or fixture comes in.
If you don’t have the original packaging, research the bulb model online and as a last resort unfortunately you may have to carefully experiment. Our bulbs have clearly listed as Non-Dimmable/ Dimmable. If you still have doubt on this, please contact us to confirm.

QUESTION:  What happens if I try to dim a NON-DIMMABLE LED Bulb? 

ANSWER: The bulb will buzz, hum, flicker or flash and causing a damage.

 

QUESTION:  Can I put a dimmable LED bulb on a circuit without a dimmer?
ANSWER: YES! Dimmable bulbs work on circuits with common on/off switches.
Furthermore, dimmable LED bulbs are less likely to be harmed by common voltage dips and spikes caused by other appliances turning on or off in your home or brown outs in your area caused by your electrical utility.

 

QUESTION: Will my old dimmer work with my new dimmable LED’s? 
ANSWER: Some LED brands are more versatile when it comes to working with older style dimmers. If your new LEDs are flickering or not dimming fully and smoothly then there is a pretty good chance your new LED lights are not compatible with your old dimmer or you have too many or too few lights on the circuit.

To resolve this, you will probably need to purchase a new dimmer (or new LEDs) that are compatible.

QUESTION: DO LED’s DIM JUST LIKE MY OLD BULBS DID?
ANSWER: Excellent dimming capabilities nearly equal to incandescent behavior is achievable. 

QUESTION: WHAT IS LED DIMMING “DROP OUT”?
ANSWER:
Because many LEDs do not dim to 0% like incandescent/halogen, LED’s can “drop out” at the lower range of the dimmer switch, meaning that the lights turns off (often flickering first) before the dimmer control reaches the bottom of its travel. This occurs when the dimmer switch’s lowest voltage setting is lower than the voltage required to operate the LEDs, therefore creating a small section on the dimmer control that is essentially dead. Many newer dimmer switches have a feature which allows the bottom range of the dimmer control to be adjusted and set at a level which permits the LED to properly turn off and on.

QUESTION: CAN I PUT TOO MANY OR TOO FEW LED LIGHTS ON A DIMMER CIRCUIT?
ANSWER: Yes you can !  You can under load or over load a dimmer circuit with LED’s. Most incandescent dimmers were designed for a minimum load of 40W. Most individual LED lights use far less than 40W, so putting only one or two LED lights on a dimmer can potentially cause under loading of the dimmer switch. This condition can either cause the dimmer not to light the LED’s or cause performance issues.  Overloading can be problematic as well.  Unfortunately, due to the stress that the LED driver circuits put on an incandescent dimmer when they first start up , it is not reliable to determine the maximum number of LED lights by dividing the cumulative wattage of the LED’s  into the dimmer switch maximum wattage load. It is generally acceptable to put the same number of LED’s on a dimmer circuit as was specified for incandescent lights. However, the best way to safely and accurately determine the maximum number of LED lights for a specific dimmer switch is to check the specifications of the dimmer and the LED lights and then do the math.

 

The first thing to check is whether or not you purchased a dimmable LED light !  It’s a common problem.  You walk into your local big box store to shop for LEDs and the part time employee in the colorful smock who is trying to help you knows more about plumbing than lighting.  So, without realizing it, you end up taking home a non-dimmable LED bulb or a LED that is incompatible with your dimmer.  Non-dimmable LED lights are often a little bit less expensive than dimmable bulbs.  Be especially vigilante when purchasing a low cost
A-19 household style LED bulb.   FACT: All incandescent/ halogen bulbs can be dimmed but not all LEDs are designed with a dimming option.     If you put a non dimmable LED bulb into a circuit with a dimmer , as soon as you try to dim the  LED it will typically buzz , hum,  flicker and give you all kinds of feedback that you are damaging it … then it goes out.

 

Dimming LED lights and bulbs can be as easy as the old school incandescent/halogen lights as long as you follow a few simple rules.
1.  Buy a dimmable LED
2.  Make sure the dimmer you are using has been tested to work with your bulb.  Compatible dimmers are listed on this website thru a live link on our product pages.
3.  Do not over or under load your dimmer.