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  2. Load cell - Wikipedia

    en.wikipedia.org/wiki/Load_cell

    S-type load cells; used in tension applications where you will find static and dynamic loads. Compression load cells; used in truck scales, large platform scales, weighbridges and hopper scales. Ring Torsion load cells; used in high accuracy hoppers, silos, platforms and pallet scales.

  3. Ragone plot - Wikipedia

    en.wikipedia.org/wiki/Ragone_plot

    Ragone plot showing specific energy versus specific power for various energy-storing devices. A Ragone plot (/ r ə ˈ ɡ oʊ n iː / rə-GOH-nee) [1] is a plot used for comparing the energy density of various energy-storing devices.

  4. Maximum power transfer theorem - Wikipedia

    en.wikipedia.org/wiki/Maximum_power_transfer_theorem

    It is a common misconception to apply the theorem in the opposite scenario. It does not say how to choose the source resistance for a given load resistance. In fact, the source resistance that maximizes power transfer from a voltage source is always zero (the hypothetical ideal voltage source), regardless of the value of the load resistance.

  5. Contact resistance - Wikipedia

    en.wikipedia.org/wiki/Contact_resistance

    Electrical contact resistance is also called interface resistance, transitional resistance, or the correction term. Parasitic resistance is a more general term, of which it is usually assumed that contact resistance is a major component. William Shockley [1] introduced the idea of a potential drop on an injection electrode to explain the ...

  6. Per-unit system - Wikipedia

    en.wikipedia.org/wiki/Per-unit_system

    In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity. . Calculations are simplified because quantities expressed as per-unit do not change when they are referred from one side of a transformer to t

  7. Electrical resistivities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistivities_of...

    As quoted in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition.CRC Press. Boca Raton, Florida, 2003; Section 4, Properties of the Elements and Inorganic Compounds; Physical Properties of the Rare Earth Metals

  8. Electrical load - Wikipedia

    en.wikipedia.org/wiki/Electrical_load

    The input resistance of the load stands in series with Rs. Whereas the voltage source by itself was an open circuit , adding the load makes a closed circuit and allows charge to flow. This current places a voltage drop across R S {\displaystyle R_{S}} , so the voltage at the output terminal is no longer V S {\displaystyle V_{S}} .

  9. Power rating - Wikipedia

    en.wikipedia.org/wiki/Power_rating

    The conditions are specified in standards such as IEC 61215, IEC 61646 and UL 1703; specifically, the light intensity is 1000 W/m 2, with a spectrum similar to sunlight hitting the Earth's surface at latitude 35° N in the summer (airmass 1.5) and temperature of the cells at 25 °C. The power is measured while varying the resistive load on the ...