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  2. Brushless DC electric motor - Wikipedia

    en.wikipedia.org/wiki/Brushless_DC_electric_motor

    Brushless motors are found in many modern cordless tools, including some string trimmers, leaf blowers, saws (circular and reciprocating), and drills/drivers. The weight and efficiency advantages of brushless over brushed motors are more important to handheld, battery-powered tools than to large, stationary tools plugged into an AC outlet.

  3. Commutator (electric) - Wikipedia

    en.wikipedia.org/wiki/Commutator_(electric)

    Parts: (A) commutator, (B) brush, (C) rotor windings, (D) stator (field) windings, (E) brush guides, (F) electrical connections. A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.

  4. Cooper Wiring Devices - Wikipedia

    en.wikipedia.org/wiki/Cooper_Wiring_Devices

    The company is the successor to both Arrow-Hart & Hegeman and Eagle Electric, both of which Cooper Industries had acquired. The Arrow-Hart brand is still used by Cooper Wiring Devices for some of their commercial products. Cooper Wiring's key competitors today include Hubbell, Leviton, Legrand and Lutron Electronics Company.

  5. Hart's inversors - Wikipedia

    en.wikipedia.org/wiki/Hart's_inversors

    Hart's first inversor, also known as Hart's W-frame, is based on an antiparallelogram.The addition of fixed points and a driving arm make it a 6-bar linkage. It can be used to convert rotary motion to a perfect straight line by fixing a point on one short link and driving a point on another link in a circular arc.

  6. Highway Addressable Remote Transducer Protocol - Wikipedia

    en.wikipedia.org/wiki/Highway_Addressable_Remote...

    The HART Communication Protocol (Highway Addressable Remote Transducer) is a hybrid analog+digital industrial automation open protocol. Its most notable advantage is that it can communicate over legacy 4–20 mA analog instrumentation current loops, sharing the pair of wires used by the analog-only host systems.

  7. Belichick says he's had 'good conversations' with UNC ... - AOL

    www.aol.com/belichick-says-hes-had-good...

    Former New England Patriots coach and six-time Super Bowl champion Bill Belichick said Monday he had “a couple of good conversations” with North Carolina Chancellor Lee Roberts amid his ...

  8. Pruning shears - Wikipedia

    en.wikipedia.org/wiki/Pruning_shears

    Professional pruning shears often have replaceable blades. There are three different blade designs for pruning shears: anvil, bypass and parrot-beak. Anvil pruners have only one blade, which closes onto a flat surface; unlike bypass blades it can be sharpened from both sides and remains reliable when slightly blunt.

  9. Hart Racing Engines - Wikipedia

    en.wikipedia.org/wiki/Hart_Racing_Engines

    Brian Hart Ltd., also known as Hart and Hart Racing Engines, was a motor racing engine manufacturer that participated in 157 Formula One Grands Prix, powering a total of 368 entries. Founded in 1969 by British engineer Brian Hart , Hart initially concentrated on servicing and tuning engines from other manufacturers for various independent ...

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