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Speed Control
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If you need to decide how you are going to control your model train, you nave two main options. You can either choose analog control or digital command control, often referred to as DCC. We are now going to discuss the differences between these two options, which are many, and which may be best suited for your needs.
To begin with, analog control means that a battery supplies the track itself with a variable voltage charge. All of the trains that you have on your track thus move due to this electrical charge. All of the different functions of each train car, such as their motor, lights, etc. are powered by the electricity taken in by the wheels.
If you turn up the voltage, the speed of your train will increase. If you reverse the polarity, you can make your cars reverse and go the opposite way. A downside to analog control is that you can only control the charge you're sending to the tracks. This means that you cannot have several different things happening at once.
The other option, DCC, not only supplies the track with electricity, but each separate engine can be operated by means of a control center which sends out various signals. This gives you many more options that analog control. Since each separate car receives its own commands, not merely the tracks, you can really be creative.
Some of the other advantages to DCC is that you can add many different lighting and sound effects to your track. Not only can you randomly program them in, you also have total control over everything that happens. Trains can also hitch, unhitch, and complete a variety of other functions without you laying a finger on the set. This will really make your train set come to life. All of the different trains can be going at different velocities and doing different things. All you have to do is sit back and punch a few buttons.
With Dcc control you also have the option of changing the velocity vs. acceleration level for each different train that is on the track. There are also other options that allow you to stabilize the velocity, with your decoder automatically detecting how fast the train is moving and adjusting the voltage accordingly.
Many of the most common DCC sets that are on the market today are composed of multiple parts, including the battery, decoder, accelerator, control station, and a booster. The speed control that is offered varies from 14, 28, even up to 128. Just think about what you could do with the latter. The possibilities are almost endless. An added benefit to DCC control is that nearly all parts and setups are compatible.
Don't worry about what will happen to your train set if the company that sold you your DCC controls goes under. The wiring is quite basic. It is also possible to upgrade your analog set to DCC, which will greatly simplify matters since analog wiring is very difficult to work with.
Are you looking for more information about model trains? Visit The Model Railroader website at http://www.themodelrailroader.com for lots of helpful hint and tips.
Volvo Recalls 360,000 Cars for Speed-control Problem
Volvo earlier released a statement that it is recalling approximately 360,000 cars due to a problem in speed-controls that can cause the vehicle to lose power without any warning. The automaker added that the defect in the electronic throttle module in Volvo cars manufactured between 1999 and 2002 could throw engines into the so-called "limp home" mode having about 15 miles per hour as the maximum speed.
Said recall, which is ordered by the National Highway Traffic Safety Administration (NHTSA), applies to Volvo used parts found in the C70 and V70 models that are manufactured between 2001 and 2002. Other cars subject to recall are the S60 models manufactured between 2001 and 2002, and S70 and V70X models, which are manufactured between 1999 and 2000. Christer Gustafsson, spokesperson of the automaker said that Volvo has fixed the speed-control problem on about 165,000 vehicles of the recall total after sending out notices to owners in March.
The speed-control problem was first flagged by California's Air Resource Board. After said problem was reported and investigated by the NHTSA, the latter ordered a mandatory recall early this month. Gustafsson added, "Volvo owners who bring their cars to dealerships will have new software reinstalled for the throttle-control unit. We're already doing about 2,000 or 3,000 of these a week." In addition Gustafsson noted that "limp home" setting is the safety feature in Volvo cars. Said feature is designed to avoid unintended acceleration in case of a throttle malfunction.
Separately, the NHTSA also ordered recall of 128,000 DaimlerChrysler's Pacifica sport utility vehicles built between 2005 and 2006 due to software problem. Said software controls Chrysler car parts governing the fuel pump and powertrain control. According to NHTSA, the problem could cause the engine to stall in some cases. As part of the recall, the automaker will reprogram the powertrain controls and substitute the fuel pump on some Chrysler cars.
It can also be recalled that Toyota, a rival of GM, Ford and Chrysler, recalled 368,000 SUVs in July. The recall is all about the defective clip used in Toyota carpet. The defective carpet clip could hinder with brake usage and cause further road misfortunes.
About the Author
As a former news correspondent for an auto-related website, Stacey has gathered extensive knowledge and experience in the automotive industry. This 34 year old mother of two from Memphis is a genuine car lover.
How to control speed of CPU fan without any softwares.?
My processor is Intel Pentium 4 530, 3000 MHz (15 x 200) but it often makes me mad because it is very noisy. I know there are softwares that can control speed of CPU fan but I don't like it. I heard somebody said you can controls CPU fan without any softwares. How I do it?
You can control fan speed through your systems Bios.
Usually its a case of pressing F2 when you boot your pc up and then just navigate the menu's using the arrow keys and the enter key.
What can go wrong with your car's electronics that control speed, braking and other things
A complex array of sensors, wires and computer chips now control just about every critical function in your car, including acceleration, braking, shifting gears and even the door locks.
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