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ayhda88r
Posted: Mon 16:50, 21 Oct 2013
Post subject: hollister outlet sale Five Steps to Selecting the
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Five Steps to Selecting the Right Switch for Your ProjectArticle Summary: Often one of the last components considered, selecting the correct switch is important when designing electronic equipment. Awareness of the various options is critical to choosing the best switch for an application. [url=http://www.jeremyparendt.com/Hollister-b5.php]hollister france[/url]
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When selecting a switch, you can ensure that the most appropriate switch is chosen if you take these factors into consideration.
End user requirements:
The designer should consider the conditions under which a switch will be used. For example, whether the user requires an on/on switch or an on/off switch, and if illumination or legends are required to indicate the status are both things that should be considered.
The ease of use of the various switch design types and sizes available need to be questioned during the selection process. A good rule of thumb is that the switch that not only meets the other requirements, but is easy [url=http://www.par5club.com/louboutin.php]louboutin pas cher[/url] to use, should be chosen.
Engineering specifications:
The engineering aspects of the switch must be assessed in order to ensure that it is able to carry out the expected functions. The load characteristic is an important aspect of any switch selection and will impact the type of switch that can be chosen. Factors like size are important. Switches can be standard, miniature, or sub miniature. Also consider mounting limitations like PC mount, surface mount, solder or fast connect when selecting a switch for your application.
It also matters whether the switch is a momentary switch or continuous contact [url=http://www.thehygienerevolution.com/hollister.php]hollister[/url] or maintained switch. A momentary switch keeps the circuit closed or open for a very short period of time while the continuous or maintained switch keeps it open or closed for long periods of time.
The type of contact material is another factor to be considered when choosing a switch. Silver is the most commonly [url=http://www.mxitcms.com/abercrombie/]abercrombie milano[/url] used material for the contacts as it is a good conductor and hence has low resistance. Gold is generally used when switching is performed at logic level (1-100mA).
The longevity and quality of a switch is another important factor. Low quality switches cost less initially but maintenance and replacement costs can make it more costly [url=http://www.turtle.or.jp/cgi-bin/aska.pl/otto/kreger/dzhenet/tiuson/tipi/liu]hollister Avoiding Vague Ante[/url] in the end. Momentary switches have longer life as compared to maintained switches.
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Another common type of switch is the rotary switch where the switch is rotated to choose a particular circuit combination and is available in wide range of sizes and types. It may be sub-miniature dip rotary, very large or heavy duty rotary. It [url=http://www.r30.co.jp/cgi-bin/aska.cgi/aska.cg%3C/b%3E%3C/span%3E%3C/small%3E%3C%3C/aska.cgi]barbour online shop Some Guid[/url] may also be enclosed or open deck type and have many stop positions and poles.
A type of rotary switch is a key lock switch, which can be of low, medium or high security. There are also many key options, sizes and circuits available in key lock switches.
Slide actuated switches are a special type of switch used in certain applications. They are also available in several sizes, key choices and circuit functions.
Toggle switches, rockers and paddle switches are also available in many different sizes and [url=http://www.gotprintsigns.com/abercrombiepascher/]abercrombie soldes[/url] ratings. They may also be momentary or maintained, illuminated or non-illuminated. In addition they can also have 2 or 3 positions.
Standards and government regulations:
Does your application require that switches be certified by UL and CSA? Ratings like the UL94V specifies the fire retardant characteristics of a switch while TV5 and TV8 ratings are related to the arc proof characteristics. These ratings are aimed at ensuring that the switches meet the needs of a given application.
Ratings like the IP [url=http://www.tagverts.com/barbour.php]barbour online shop[/url] rating helps in choosing the right type of switch for a given application. For example, IP 65 rated switches provide protection against dust and high pressure water sprays while an IP 67 rated switch is protected from temporary immersion up to 1m deep water.
Compliance with relevant standards and government regulations is another issue to be considered. Acts like the Resource Conservation and Recovery Act (RCRA), the Clean Water Act and the Clean Air Act (CAA) are some of the regulations to be followed. In addition, European countries follow regulations like RoHS and Waste Electrical Electronic Equipment (WEEE) that limit the use of hazardous chemicals in manufacture of goods.
Operating [url=http://www.giuseppezanottipaschere.com]giuseppe zanotti soldes[/url] environment:
The condition of the environment or surroundings under which the switch operates is also an important consideration when deciding on a particular type of switch. Factors like temperature, humidity, dust etc. influence the working of a switch. Applications like medical devices, marine equipment, harsh industrial environment, [url=http://www.teatrodeoro.com/hollisterde.php]hollister[/url] construction / mining etc. require special type of switches suited to the environment under which the equipment operates.
Using these guidelines can aid you in making the correct choice of switch for an application. By following them, you can quickly come to a conclusion about whether a switch is suited for a particular application or not. Remember that switches are an important part of any application. Making the correct choice of switch will save time and money by avoiding unnecessary maintenance or replacement later and enhance customer satisfaction.
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