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تمامی مطالب نوشته شده توسط SIMooRGH.M

  1. بله شما درست میفرمایید ولی به نظرم همه خانم ها زیبانا
  2. کجا؟ حتما شبیه لولوهه دیگه ببرش بابا چطوری با دهن کجی؟ میبردت خوب برین یه جایه خوف نمیرین برو بزن:w00:
  3. پش سر من؟:167: یعنی چی اخه؟:w00::w00: برین کمی درس بخونین مگه نزدیک اتحانا نیست . . . چی کار به امار مردم دارین:167:
  4. منم اشتپ تایپیشو نیدم مشخصا امروز غذا سلفی خوردی
  5. امروز دانشگاه امن و امان بود فقط انتشارات صفی داشت بیاوو ببین
  6. ببخشید فک کنم اونا باید از شما معذرت خواهی میکردن که مزاحمتون شدن
  7. حقتونه خو ولی نامردی کردینا واس چی در رفتین
  8. SIMooRGH.M

    Varicap or varactor diode

    حتما توضیح باشه ولی فک کنم ترجمش نکنم بهتر باشه
  9. فیلا که هوا گرمه من امروز یونی نبودم شماها بودین؟
  10. SIMooRGH.M

    Varicap or varactor diode

    Varactor circuits It is impossible to show all the circuits in which varactor / varicap diodes may be used. However it is worth providing one example to show how these diodes may be used in a typical circuit. Effectively a capacitor is replaced with the varactor diode, but it is necessary to also ensure that the tune voltage, i.e. the voltage used to set the capacitance of the diode can be inserted into the circuit, and that no voltages such as bias voltages from the circuit itself can affect the varactor diode. Voltage controlled oscillator using a varactor diode
  11. SIMooRGH.M

    Varicap or varactor diode

    Varactor or varicap circuit symbol The varactor diode or varicap diode is shown in circuit diagrams or schematics using a symbol that combines the diode and capacitor symbols. In this way it is obvious that it is being used as a varacor or varicap capacitor rather than a rectifying diode. Circuit symbol for a varactor diode / varicap diode When operated in a circuit, it is necessary to ensure the varactor diode remains reverse biased. This means that the cathode will be positive with respect to the anode, i.e. the cathode of the varactor will be more positive than the an
  12. SIMooRGH.M

    Varicap or varactor diode

    Operation of a variable capacitor They key to understanding how a varactor or varicap diode works is to look at what a capacitor is and what can change the capacitance. As can be seen from the diagram below, a capacitor consists of two plates with an insulating dielectric between them. The capacitance of the capacitor is dependent upon the area of the plates - the larger the area the greater the capacitance, and also the distance between them - the greater the distance the smaller the level of capacitance. A reverse biased diode has no current flowing between the P-type area a
  13. SIMooRGH.M

    Varicap or varactor diode

    Varactor or varicap diodes are used mainly in radio frequency (RF) circuits to be able to provide a capacitance that can be varied by changing a voltage in an electronics circuit. This can be used for tuning circuits including radio frequency oscillators and filters. Although both names: varactor and varicap diode are used, they are both the same form of diode. The name varactor meaning variable reactor, or reactance, and varicap meaning variable capacitance (vari-cap).
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