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  2. AC adapter - Wikipedia

    en.wikipedia.org/wiki/AC_adapter

    The X-connector here provides 3.5 and 2.5 mm phone plugs and two sizes of coaxial power connector Universal laptop power supply with adjustable voltage between 12 and 24 volts. External power adapters can fail, or can become separated from the product they are intended to power. Consequently, there is a market for replacement adapters.

  3. Coaxial power connector - Wikipedia

    en.wikipedia.org/wiki/Coaxial_power_connector

    4.00 1.70 9.5 B EIAJ-02 3.15–6.3 V Kobiconn 3219-EX Lumberg 1636 02 Kobiconn 0311-EX (inline) Used in Lenovo Flex 4 adapter. Used for Sony PSP Charger (Input: 100-240VAC, Output: 5VDC @ 1500mA for PSP 1000, 2000, 3000) 4.5 3.0 0.5 12 19.5v Newer HP and Dell laptop computers 4.75 1.70 9.5 C EIAJ-03 6.3–10.5 V Kobiconn 3220-EX Lumberg 1636 03

  4. IEC 62700 - Wikipedia

    en.wikipedia.org/wiki/IEC_62700

    IEC Technical Specification 62700: DC Power supply for notebook computer is an IEC specification of a common standard for external laptop computer AC adapters.Laptops and AC adapters following this standard will have interchangeable power supplies, which will enable easy reuse of used power supplies (thereby reducing electronic waste) and make buying a new compatible power supply for a laptop ...

  5. Right to repair - Wikipedia

    en.wikipedia.org/wiki/Right_to_repair

    The law established the right of consumers and independent repairers to get manuals, diagrams, and original parts from manufacturers, although The Verge, Engadget, and Ars Technica noted that the bill was made less vigorous by way of last-minute changes that provided exceptions to original equipment manufacturers. It will apply to electronic ...

  6. Polarity symbols - Wikipedia

    en.wikipedia.org/wiki/Polarity_symbols

    Diagram showing positive tip polarity on the left and negative tip polarity on the right. To read diagram: The center positive drawing on the left indicates that the center (also known as the tip) of the output plug is positive (+) and the barrel (ring) of the output plug is negative (−).

  7. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    [3] A trickle charger provides a relatively small amount of current, only enough to counteract self-discharge of a battery that is idle for a long time. Some battery types cannot tolerate trickle charging; attempts to do so may result in damage. Lithium-ion batteries cannot handle indefinite trickle charging. [4]

  8. Power supply unit (computer) - Wikipedia

    en.wikipedia.org/wiki/Power_supply_unit_(computer)

    At least two of Dell's business PCs introduced in 2013, the OptiPlex 9020 and Precision T1700, ship with 12 V–only power supplies and implement 5 V and 3.3 V conversion exclusively on the motherboard. Afterwards, Lenovo ThinkCentre M93P adopted 12 V–only PSU and performs 5 V and 3.3 V conversion exclusively on the IS8XM motherboard.

  9. Power electronics - Wikipedia

    en.wikipedia.org/wiki/Power_electronics

    An HVDC thyristor valve tower 16.8 m tall in a hall at Baltic Cable AB in Sweden A battery charger is an example of a piece of power electronics. Power grid designer in front of a newly installed 880kV thyristor valve array A PCs power supply is an example of a piece of power electronics, whether inside or outside of the cabinet.