الکتروموتور - موتور الکترونیکی چیست؟ - کاردان گیربکس

الکتروموتور - موتور الکترونیکی چیست؟

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نحوه کار یک موتور DC بر این اصل که قطب های هم نام آهنربا یکدیگر را دفع و قطب های غیر هم نام یکدیگر را جذب می کنند استوار است. سیم پیچی که از میان آن جریان الکتریکی عبور می کند، یک قطب مغناطیسی به وجود می آورد که مرکز آن با مرکز سیم پیچ یکی است. با قطع و وصل کردن جریان سیم پیچ قطب مغناطیسی آن نیز می تواند قطع و وصل شود و یا با تغییر جهت جریان؛ قطب مغناطیسی می تواند ۱۸۰ درجه تغییر جهت دهد. یک موتور DC ساده به طور معمول دارای یک سری آهن ربا بر روی استاتور و دو یا چند سری سیم پیچ در روی آرمیچر است که این سیم پیچ ها دور یک قطب آهنی و البته با ایزولاسیون پیچیده شده و انتهای آن به کوموتاتور متصل است.

آرمیچر شامل برینگ هایی است که آن را در وسط موتور و مرکز تولید قدرت موتور نگه می دارد. سیم پیچ های آرمیچر به چرخش خود دور آرمیچر ادامه می دهند و هم از سیم های تکی و یا موازی استفاده می کنند و می توانند چندین دور به دور دندانه های انباره بزنند ( Stack Tooth ).

Dc Electric Motor Cycle 2

مقدار جریان عبوری و تعداد دورهای سیم پیچ تعیین کننده ی قدرت میدان مغناطیسی به وجود آمده می باشد. تواتر روشن و خاموش شدن یک سیم پیچ خاص معین کننده این است که یک میدان الکترومغناطیسی موثر به کدام جهت حرکت می کنند. باروشن و خاموش کردن یک سیم پیچ به صورت منظم و پشت سرهم یک میدان دوار ساخته شود. این میدهان مغناطیسی چرخنده بر روی میدان های که در روی استاتور وجود دارد و این میدان ها ممکن است توسط یک آهنربای دائمی و یا سیم پیچ به وجود آید واکنس می دهند و باعث به وجود آمدن نیرویی که آرمیچر را به چرخش در می آورد می شود. موتورهای DC در توان های بالا معمولا توسط تزیق هوا به داخل آنها خنک می شوند.

کوموتاتور به هر یک از سیم پیچ های آرمیچر اجازه می دهد که در نوبت خود فعال شوند. جریانی که سیم پیچ ها را تغذیه میکند به طور معمول توسط دو جاروبک و یا ذغال که با کوموتاتور اتصال لغزشی دارند برقرار می شود.

با پیشرفت تکنولوژی موتورهای DC بدون فرچه و زغال ساخته شده اند که دارای مدارات الکتریکی مرتبط ، جهت روشن و خاموش کردن جریان سیم پیچ آرمیچر هستند. این موتورها فرچه و ذغالی ندارند تا فرسوده شده و یا تولید جرقه کنند. از این الکتروموتورها در مکانهایی که تولید نویز ایجاد مشکلات عدیده ای می کند استفاده می شود ( مانند بیمارستانها و مراکز پردازش داده)

تعداد قطب های استاتور و آرمیچر و چگونگی اتصال سیم پیچ ها به یکدیگر ( سری یا موازی ) فاکتور سرعت / گشتاور این موتور ها را مشخض می کند. سرعت یک موتور DC می تواند با تغییر ولتاژی که به آرمیچر می دهیم تغییر کند. استفاده از مقاومت متغیر در مدار آرمیچر و یا مدار میدان به ما اجازه ی کنترل سرعت را می دهد. موتور های مدرن DC معمولا با مدارات الکترونیکی قدرت کنترل می شوند که این مدارات ولتاژ را با بریدن و تنظیم زمان قطع و وصل تنظیم می کنند که دارای ولتاژ کار پایین تر و موثرتری نیز هستند.

الکتروموتورهای DC سری دارای گشتاور زیاد در سرعت های پایین هستند. از این الکتروموتور ها در کاربردهایی چون لوکوموتیو های برقی و دیزل الکتریکی ، ترامواها و دریل های برقی بزرگ استفاده می شود.

معرفی موتور DC و یک سیستم برق رسانی برای به حرکت درآوردن ماشین آلات باعث به وحود آمدن یک انقلاب صنعتی دیگر در دهه ی ۱۸۷۰ شد. موتورهای DC می توانند به صورت مستقیم به باطری های قابل شارژ کار کنند و این اصل نیروی پیش رانه اولین خودروهای الکتریکی و اتومبیل های مرکب امروزی و حتی دستگاه های بدوم سیم را تامین کرد. امروزه موتورهای DC کوچک هنوز در کاربردهایی چون اسباب بازی ها و پرتاب کننده های دیسک و یا در سایزهای بزرگ برای به کار انداختن غلتک های گردان فلزات در کارخانه های نورد و ماشین های کاغذ بری بزرگ مورد استفاده قرار می گیرند.

اگر توان خارجی به صورت مکانیکی به یک موتور DC داده شود این موتور به عنوان یک ژنراتور DC یا یک دینام کار می کند. از این خصوصیت برای شارژ باتری خودروهای الکتریکی و مرکب (هیبریدی) و قطار های برقی وقتی که اقدام به کاهش سرعت و ترمزگیری می کنند مورد استفاده قرار می گیرد. این پروسه را ترمز احیا کننده می نامند. در لوکوموتیوهای دیزل الکتریک نیز از موتور های DC به عنوان ژنراتور برای ترمزگیری استفاده می کنند که این انرژی در بسته های مقاومتی ( Resistor Stack) تلف می شود. اکنون در طراحی جدید بخشی از این انرژی را در باتری ها ذخیره می کنند.

خواندن 4445244 دفعه آخرین ویرایش در پنج شنبه, 03 اسفند 1396 00:05

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  • Purchasing Steroids online ارسال شده توسط Purchasing Steroids online پنج شنبه, 16 خرداد 1404 23:33

    We still don’t know precisely why this happens, but consultants know it is related to a respiratory misery response.

    Tren cough can usually be an uncontrollable coughing fit and is one of this steroid’s most irritating unwanted effects.
    One of the best methods to do this is to devour high
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    This differs from a tren cough, although a cough also can involve actual flu-type symptoms.

    Ideally, the second cycle stack is Check and Deca,
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    With a brief half-life, if virilization begins creating, you can give up
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    Males who run Nandrolone cycles will virtually all the time be delighted with the results.
    With Deca, we take the great with the dangerous, and it’s as much as you whether the positives outweigh the downsides.


    Trenbolone’s results on efficiency and physique are
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    Yes, with such highly effective positive effects can come some
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    Also known as Trenabol, Trenbolone Enanthate is the only one
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    It’s still bought and utilized by bodybuilders on the lookout for a longer-lasting ester than Tren Ace.
    This is the longest final ester of Trenbolone,
    with a half-life of about eleven days. The affiliation of Nandrolone with progestin receptors
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    These results, with out the use of secretion decreasing agents, disappear inside a month after discontinuation of
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    The finest and most trusted ones embody Humatrope,
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    So, how are you going to get these wide-ranging effects from another
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    There are several sorts of cycles, including bulking cycles for building
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    lean mass cycles for clear, sustainable gains. Every cycle usually includes a combination of anabolic steroids, usually paired with support dietary supplements and post-cycle therapy (PCT) to assist the
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    Deca-Durabolin is an injectable steroid and is considered one of the
    most popular anabolic steroids provided for sale
    in our steroids shop. As a result, bodybuilders and athletes will experience constructive results on connective and joint tissues, strengthening them during
    bulking, power gaining, and mass gaining cycles. Deca Durabolin, a distinguished anabolic steroid in the
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    multiple advantages, notably in muscle growth, recovery, and
    energy enhancement.
    Compounding pharmacies are another option, however NPP may be
    difficult to search out from these sources throughout
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    For many people, underground labs (UGLs) are the one place to supply NPP.
    Nonetheless, including Arimidex or Aromasin for progesterone is necessary for Deca as they work better at this
    job than Nolvadex. Users who don’t respond properly to Trenbolone will often turn to Deca instead, although the 2 compounds are quite completely different.


    Tren is an excellent recomp AAS that won’t cause water retention, and
    Tren’s results should offset any HGH-induced water retention. Muscle positive aspects, subsequently, might be maintainable post-cycle with little weight loss.
    Anticipate a tough, outlined physique, quick recovery, some fats loss, and incredible strength.
    Superior customers will often embrace Deca-Durabolin in both bulking
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    off-label use. Deca Durabolin is a protracted standing favourite among performance enhancing athletes, and whereas it's tremendously useful it's typically grossly misunderstood.

    Like HGH, Trenbolone also increases IGF-1, making this combination a perfect match for mass-gaining and fat-loss goals.
    If you’re taking doses of 8iu or more, splitting it into two every day injections just isn't uncommon. Keep Away From
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    – this may help keep away from fatigue or drowsiness.

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    Invited to work in the Usa, Baulieu was noticed in 1961 by Gregory Pincus,
    generally recognized as the daddy of the contraceptive capsule,
    who satisfied him to give attention to sex hormones.

    He was the primary to synthesize the natural product physostigmine, and was a pioneer in the industrial
    large-scale chemical synthesis of the human hormones progesterone and testosterone from plant sterols such as stigmasterol and sitosterol.
    Percy Julian was a skilful chemist who first succeeded in synthesizing
    many advanced molecules similar to steroids from crops.
    With the limited instruments obtainable in the Thirties Julian was the first to synthesize physostigmine, an important and sophisticated to supply
    drug used to treat glaucoma. Julian was inducted into the Nationwide Inventors Corridor of Fame for his Preparation of Cortisone (National Inventors Hall of Fame, 2014).

    The fear surfaced that Luftwaffe pilots were being given such
    a drug to allow them to tolerate hypoxia and fly at altitudes of 40,000 feet or more.
    Though these rumors had been undoubtedly unfaithful, the specter of a steroid-enhanced enemy grabbed the
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    Remarkably, the primary precedence was the
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    Percy Julian attended De Pauw University (A.B., 1920) and Harvard
    University (M.A., 1923) and studied beneath Ernst Späth,
    who synthesized nicotine and ephedrine, at the University of
    Vienna (Ph.D., 1931). Julian additionally taught chemistry at Fisk College,
    West Virginia State Faculty for Negroes, and Howard
    and De Pauw universities earlier than, in 1936, directing research into soybeans at the Glidden Company in Chicago.

    He grew to become director of chemical substances development there earlier than leaving in 1953 to
    discovered his personal companies. Julian went on to become
    director of research on the Glidden Company, a paint and polish
    manufacturer. He developed a course of for isolating and preparing soybean protein, which could be used to coat and size paper, to create
    cold water paints, and to measurement textiles.
    It had been identified for lots of of years that castration resulted
    within the loss of sure secondary male intercourse characteristics.
    The first inkling as to the reason for these adjustments were provided
    in 1849 by a prevention of the regression of the comb and wattles of capons by
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    The outcomes were appropriately interpreted that the testis secreted a substance into the blood to control the
    development and upkeep of the male characteristics.

    These developments gave rise to a broad variety of anabolic steroids, each tailored for particular performance and physique
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    In The Meantime researchers in plenty of countries were seeking innovative and cost-effective methods to synthesize steroids,
    including cortisone and the sex hormones.
    The medical usefulness of cortisone in rheumatology stays controversial 50 years after
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    Hench tried hard to limit untimely publicity outside the confines of the
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    However, a medical correspondent from the Big Apple Occasions gained entry to a personal meeting
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    Throughout the Nineteen Forties, the Soviet Union and Japanese Bloc international
    locations similar to Germany, started utilizing testosterone derivatives with their Olympic and newbie weightlifters.
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    rule the Olympic standings. The U.S. knew that they must do the identical
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    The giants of bodybuilding from various eras haven't solely sculpted their physiques
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    We’ll take an in-depth look at how these legends have
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    health objectives. Overall, it is clear that steroids have come a great distance since their invention, and
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    The extra persons are educated on the risks and proper use,
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    will turn into. In professional sports activities, steroid use was additionally on the
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    of these sports. The response from the western bloc was quick; Dr.
    John Ziegler, who worked with the Usa Olympic group, obtained a testosterone analog with fewer unwanted effects.

    Percy Lavon Julian was the oldest of the six youngsters ofJames Sumner
    and Elizabeth Lena (Adams) Julian. His mom was a school instructor, and
    his father, originally a instructor, took a job as a railway mail clerk shortly after
    Percy was born. For two years he served as an teacher in chemistry at Fisk University, then began graduate study at Harvard
    University, the place he acquired his A.M. He then served as professor of chemistry, for one year
    at West Virginia State College for Negroes and for 2 years
    at Howard University. Throughout the last ten years of his life, Julian devoted much of his vitality to the civil rights movement.
    This group helped to boost money for the authorized protection of black people throughout the nation. Over the years, Julian acquired honorary degrees
    from a dozen universities and served on the boards of numerous skilled,
    scientific, and civic organizations.

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