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  2. Qi (standard) - Wikipedia

    en.wikipedia.org/wiki/Qi_(standard)

    As an example from the 2017 version 1.2.2 of the Qi specification (referenced above), the A2 reference Qi low-power transmitter has a coil of 20 turns (in two layers) in a flat coil, wound on a form with a 19 mm inner diameter and a 40 mm outer diameter, with a below-coil shield of soft iron at least 4 mm larger in diameter which gives an inductance of 24 ± 1 microhenries.

  3. IUoU battery charging - Wikipedia

    en.wikipedia.org/wiki/IUoU_battery_charging

    IUoU is a DIN -designation [ 1] (DIN 41773) for a lead-acid battery charging procedure that is also known as 3-stage charging, 3-phase charging, or 3-step charging. It consists of three phases (or stages), to be executed by a battery charger. The three phases are: I-phase (constant electric current ), Uo-phase (constant over- voltage ), and U ...

  4. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    A mobile phone plugged in to an AC adapter for charging. A battery charger, recharger, or simply charger, [ 1][ 2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage, current, for how long and what to do when charging is complete—depends on the size and type of the ...

  5. Charge pump - Wikipedia

    en.wikipedia.org/wiki/Charge_pump

    The Samsung Galaxy S23, which takes an input current of 3A, can charge its internal battery packs at 6A thanks to a 2:1 current pump. [3] Oppo's 240W SUPERVOOC goes further and uses three charge pumps in parallel (98% claimed efficiency [ 4 ] ) to go from 24V/10A to 10V/24A, which is then taken by two parallel battery packs.

  6. Elementary charge - Wikipedia

    en.wikipedia.org/wiki/Elementary_charge

    Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge. Thus, an object's charge can be exactly 0 e, or exactly 1 e, −1 e, 2 e, etc., but not ⁠ 1 / 2 ⁠ e, or −3.8 e, etc. (There may be exceptions to this statement, depending on how "object" is defined; see below.)

  7. JBL - Wikipedia

    en.wikipedia.org/wiki/JBL

    Website. jbl .com. JBL is an American audio equipment manufacturer [ 1] headquartered in Los Angeles, California, United States. JBL serves the home and professional market. The professional market includes studios, installed/tour/portable sound, music production, DJ, and cinema markets. The home market includes high-end home amplification ...

  8. Quick Charge - Wikipedia

    en.wikipedia.org/wiki/Quick_Charge

    A USB charger that supports QC3.0. Quick Charge ( QC) is a proprietary battery charging protocol developed by Qualcomm, used for managing power delivered over USB, mainly by communicating to the power supply and negotiating a voltage. Quick Charge is supported by devices such as mobile phones which run on Qualcomm system-on-chip (SoCs), and by ...

  9. NLGI consistency number - Wikipedia

    en.wikipedia.org/wiki/NLGI_consistency_number

    NLGI consistency numbers. Common greases are in the range 1 through 3. Those with a NLGI No. of 000 to 1 are used in low viscosity applications. Examples include enclosed gear drives operating at low speeds and open gearing. Grades 0, 1 and 2 are used in highly loaded gearing. Grades 1 through 4 are often used in rolling contact bearings.

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