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  2. Diode modelling - Wikipedia

    en.wikipedia.org/wiki/Diode_modelling

    Firstly, consider a mathematically idealized diode. In such an ideal diode, if the diode is reverse biased, the current flowing through it is zero. This ideal diode starts conducting at 0 V and for any positive voltage an infinite current flows and the diode acts like a short circuit. The I-V characteristics of an ideal diode are shown below:

  3. Shockley diode equation - Wikipedia

    en.wikipedia.org/wiki/Shockley_diode_equation

    The Shockley equation doesn't model this, but adding a resistance in series will. The reverse breakdown region (particularly of interest for Zener diodes) is not modeled by the Shockley equation. The Shockley equation doesn't model noise (such as Johnson–Nyquist noise from the internal resistance, or shot noise).

  4. PIN diode - Wikipedia

    en.wikipedia.org/wiki/PIN_diode

    At high frequencies, the PIN diode appears as a resistor whose resistance is an inverse function of its forward current. Consequently, PIN diode can be used in some variable attenuator designs as amplitude modulators or output leveling circuits. PIN diodes might be used, for example, as the bridge and shunt resistors in a bridged-T attenuator.

  5. Anderson's rule - Wikipedia

    en.wikipedia.org/wiki/Anderson's_rule

    In Anderson's idealized model the materials are assumed to behave as they would in the limit of a large vacuum separation, yet where the vacuum separation is taken to zero. It is that assumption that involves the use of the vacuum electron affinity parameter, even in a solidly filled junction where there is no vacuum.

  6. Idealization (philosophy of science) - Wikipedia

    en.wikipedia.org/wiki/Idealization_(philosophy...

    An example of the use of idealization in physics is in Boyle's Gas Law: Given any x and any y, if all the molecules in y are perfectly elastic and spherical, possess equal masses and volumes, have negligible size, and exert no forces on one another except during collisions, then if x is a gas and y is a given mass of x which is trapped in a vessel of variable size and the temperature of y is ...

  7. Donald Trump's latest branded venture is guitars that cost up ...

    www.aol.com/donald-trumps-latest-branded-venture...

    President-elect Donald Trump has endorsed a line of guitars, following up on the Bibles, sneakers, watches, photo books and cryptocurrency ventures launched during his third White House campaign.

  8. Lumped-element model - Wikipedia

    en.wikipedia.org/wiki/Lumped-element_model

    Representation of a lumped model consisting of a voltage source and a resistor. The lumped-element model (also called lumped-parameter model, or lumped-component model) is a simplified representation of a physical system or circuit that assumes all components are concentrated at a single point and their behavior can be described by idealized mathematical models.

  9. 270 Reasons Women Choose Not To Have Children - The ...

    data.huffingtonpost.com/2015/07/choosing...

    The number of childfree women is at a record high: 48 percent of women between the ages of 18 and 44 don’t have kids, according to 2014 Census numbers. The Huffington Post and YouGov asked 124 women why they choose to be childfree.

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