Shimano Vs. SRAM

eTap/AXS requires separate batteries in each derailleur which have approximately 20 hours of battery life. The rechargeable batteries are swappable between derailleurs if one runs low, meaning you can sacrifice the front derailleur battery to maintain shifting in the rear or vice versa. When the batteries die, the derailleurs will remain in the gear selected, essentially functioning like a singlespeed. Battery life can be checked by pressing the function buttons on the derailleurs, which will activate an LED battery indicator light on the derailleur. The shifters use common CR2032 batteries that usually last several seasons. Shifter paddles have an LED battery life indicator on the inside of the paddle.

• RELATED QUESTION

In order to light an LED with a 12V supply, what resistor value is needed?

R = (12V - Vf) / ILED where Vf is the forward voltage of the LED at the current required, usually shown by the datasheet ILED is the current that you are targeting

There's a blue LED light always on on my Blackberry, how do I turn it off?

Blue LED = Bluetooth Manage Connections icon Turn Bluetooth Off

How many LED's for a good flashlight?

One. At least 160 Lumens. Just remember, there is a balance between power and battery life. Higher the power, shorter the life. Standard Leds do not have the output of the star type. Dont waste your time with them. Have a look on Ebay. There are a huge number of the high output types.

Where is the LED high Bay light used for?

I used to design lighting for an engineering firm, and we started putting LED high bay fixtures into just about every application we used to use metal halide fixtures for - as well as to replace linear fluorescents. Warehouses, industrial facilities, gymnasiums, stores, etc. - the ability to be instant on/instant off makes them superior to metal halide, and the energy efficiency was better than fluorescent (as well as providing much better light). They are able to be step-dimmed or linear dimmed as well - making them good for applications with skylights (or even just windows), so with a few sensors you can make it to where they dim as more sunlight comes through, and then get brighter as less sunlight comes through.;

LED matrix dimming: How to control the current in a 12V LED lamp for video lighting?

Here is PWM regulator suitable for your LED array. You may replace whole LED block including resistors with yours and it should work.2N2222 transistor is rated at 0.8A. Your LED array is also about 0.8A.A bit bigger transistor would be better, but 2N2222 shall not blow up at 0. 8A in switching configuration like this. If it blow up you may replace it with BUZ11 or other N-channel MOSFET.I found that schematics here, have not tried it. If you get some flickering on video - you may increase switching frequency by changing capacitor values. If you take a look at NE555 documentation - there are some PWM examples and formulas for frequency. I've read somewhere, that switching frequency for typical LED's shall not exceed 1-2kHz, because of LED capacitance

Can adding a Led light bar cause the Cruise Control to quit on a 2006 GMC Canyon

Yeah I unplugged the trailer plug but not the one line I had to tie in I think is backup but so far still not working. I will pull tail light and disconnect and see what happens

What Type Of LED Lights Does Alienware Uses?

hmmm, i dont think you can. you can get other LED's but alienware's LED's are specially made, i think

Blueprints for flashing LED light with speed switch?

An LM3909 IC, which was specifically designed to make LED's flash, could be used, but it may not be easy to make adjustable. A 555 timer IC could be used in a circuit that would make an LED flash at an adjustable rate. I have an “IC Timer Cookbook“ (published far in the past) that gives the basics on how to do such things, but it is not a project book, and therefore the accomplishment of an objective requires the user to figure out some of the specifics for each basic circuit shown. If you need or want something simple, look into electronic kits; maybe one of them would suit your purposes. Velleman's MK180 kit flashes two LED's at a variable rate; if you want only one LED, you could simply leave one out of the circuit, which would not harm anything.

Why do white LED lights look blueish to me?

It is a problem with their spectrum of light emitance. You can look it up more on wikipedia. In short, their white light is not exactly as white as you might think. And it always is in contrast with the yellowish white light of normal bulbs. If you are really used to light bulbs in home LED light will seem a lot more blue in your home.

Led lights...colour.....2006 Roadliner?

1 on legal issues. Some state laws vary, but in general: Blue is reserved for cops Red must never be visible from the front of the vehicle. White can only be visible from the front of the vehicle other than a backup light and license plate illumination. Solid amber may not be visible from the rear of the vehicle. Flashing amber is only allowed as a turn signal indication. Flashing red is not permitted except as a part of a legal brake-light modulator.

Samsung HD LED TV is in black & white when connected to SD satellite and dvd?

Has to do with the HD signal chip which is more money to fix than a new TV This is when a protection plan would of been an intelligent choice for the few extra bucks

Why is Led Zeppelin,Pink Floyd and The Beatles overrated?

Sir, do you not realize that all the bands you listed are inspired by those bands that you consider overrated (whether it be directly or indirectly.) Just because something is rated as great, does not make it overrated, yet everybody seems to think it does. It is slowly becoming one of my least favorite words.

What LED light bulbs should I buy for a clear white luminescence?

In addition to the luminance, check the “Color Temperature“ on the bulb box. The most comfortable (in my opinion) are around 4000 K. For comparison, standard incandescent bulbs will be in the 2000-3000 range. Fluorescent bulbs are around 5000. Sunlight is 6500. Sunlight-mimicking bulbs may sound nice, but in my experience, these can look “hard“ and unnatural indoors. Confusingly, the adjective “cool“ is used for higher numbers.

Local Auto places with LED lights and light fixtures for vehicle?

By local do you mean Planet Earth, and this solar system,if yes there is,Pep Boys with 2 locations on the moon, and one on Mars,right next to Kentucky Fried Chicken,and Taco Bell.Then you have Advance Auto Supply, 6 locations on Venus, 2 on the Moon, next to 4 breast chicken. and least but lot- nast is Auto Zone,now they have stores everywhere, from Pluto to your anus, or is Uranus,anyway give me the stars I only need 10,000 more for my new implants,good luck PAUL.

Does an aquarium hood LED light need protection from the water and moister?

I have the same and have had it for about a month now and so far no issues... I think they are meant to take some water

DIY Christmas Tree LED Ornament – Adding SMD Switch to power on ATTiny45 and Wiring Tag Connect to Attiny

You are well ahead of yourself if you are already trying to make the circuit board artwork in Eagle. It is essential work out all the design details and have confidence that what is in the schematic will have half a chance of working before you commit the PC artwork.Let me make clear one very important detail. .. the LP3985IM5-5. 0 is indeed an LDO regulator but it will not convert 3V to 5V

LG LED TV ANY GOOD or plasma?

it is the two LED or Plasma??? wo not be able to be the two.. desire you are below guarantee.. i could return or commerce it in a brand ny minute.!! (even however frequently, LG is a competent product. .) you merely would have have been given a lemon

How much is my LG 32-inch Smart LED TV worth today?

if i were you, i would give it to a poor family .... the family which has not a tv so far ... their happiness costs millions of dollars ...

Why do LED TV's look better than Plasma's in stores?

LED's by default have a “store/display option“ which turns up the brightness and color to very high levels. This is to help advertise the TV's capabilities in the harsh fluorescent lighting of a retail store. When you take a TV home you will of course not use that option. When a LED/LCD is properly calibrated for home use it will be a lot dimmer.

The New Samsung LED TV's?

altho i have not gotten one yet, i would if i could rather than either a lcd or plasma. when you see one, you will know why

Does anyone make a bargain 30" LED Monitor?

Bargain 30“.... that's funny, the 'bargain' model starts around $1200. It would be cheaper to buy a 32“ flat panel TV with HDMI inputs, assuming you have HDMI output on your computer

WSVGA or LED HD netbook?

go for LED... LET last longer

Connect Windows phone 7 to LED tv?

It depends on the specific device, not what OS platform it uses. Sometimes it depends in the TV

Do all LED TVs available in US are compatible with PAL format?

In the USA, the format is NTSC.... Most other areas in the world use PAL or SECAM....(It will not work.)

About LED tv's, like/dislike?

LEDs are awesome....i bought one last year and the image is so much better than the LCDs that my friends have.....everyone who comes to my house is impressed with my TV....the TV also does not heat up as fast as LCDs . ...i really dont have any disadvantages so far....i can hook it up to a USB using my computer and see images and i also have HDMI......i have a SAMSUNG 7000

Where do I adjust forward voltage on LED

For an actual diode, you would look up the forward voltage drop on its data sheet, like this one, for example. The value is given in the table of electrical characteristics; also provided is a graph showing how the forward drop varies with the forward current. Given the desired brightness, you would determine (Figure 3) the corresponding forward current, and look up (Figure 2) the forward voltage drop at this level. Knowing the supply voltage, you can select a series resistor that will provide the required forward current

what scientists help make LED things?

Material scientists produce and process the raw materials which make up the devices. Physicists identify the physical and chemical processes that convert electricity to light. Electrical engineers determine the electrical circuits required to control the LED. Mechanical, chemical, and industrial engineers design the production equipment and the processes which convert the raw materials into devices. You could think of others involved as well.

which light penetrates deep into the skin LED lights or Infrared lights?

LED's are regular light emitters... just plain old visible light. Infrared light can penetrate the skin.

Poll: Led Zeppelin...........?

yes,? oh you mean i have to choose,? yes? their first album is only 40 years old,

LED diodes as both diode and load for boost converter

Your suggestion could work. I have done this with a single white LED where space and cost and simplicity were paramount. The boost diode wastes voltage and hence power. Your 33V string has about ten times the voltage that I had on yesteryears' birdsnest. The prospective power savings will not be great in percentage terms. You will waste more power in the LEDs because the current is very lumpy. The Ohmic losses in the LED bulk resistance will raise the LED junction temp. DC runs the LEDs coolest. Carefully look at what you are doing. The downside may be more than the upside making the design worse off