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  2. Henry (unit) - Wikipedia

    en.wikipedia.org/wiki/Henry_(unit)

    The henry (symbol: H) is the unit of electrical inductance in the International System of Units (SI). [1] If a current of 1 ampere flowing through a coil produces flux linkage of 1 weber turn, that coil has a self-inductance of 1 henry.‌ The unit is named after Joseph Henry (1797–1878), the American scientist who discovered electromagnetic induction independently of and at about the same ...

  3. Single-ended primary-inductor converter - Wikipedia

    en.wikipedia.org/wiki/Single-ended_primary...

    The single-ended primary-inductor converter (SEPIC) is a type of DC/DC converter that allows the electrical potential at its output to be greater than, less than, or equal to that at its input. The output of the SEPIC is controlled by the duty cycle of the electronic switch (S1).

  4. Induction coil - Wikipedia

    en.wikipedia.org/wiki/Induction_coil

    Antique induction coil used in schools from around 1900, Bremerhaven, Germany. An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil [1] after Heinrich Rühmkorff) is a type of transformer [2] [3] [4] used to produce high-voltage pulses from a low-voltage direct current (DC) supply.

  5. Weber (unit) - Wikipedia

    en.wikipedia.org/wiki/Weber_(unit)

    A change in flux of one weber per second will induce an electromotive force of one volt (produce an electric potential difference of one volt across two open-circuited terminals). Officially: Weber (unit of magnetic flux) — The weber is the magnetic flux that, linking a circuit of one turn, would produce in it an electromotive force of 1 volt ...

  6. Inductance - Wikipedia

    en.wikipedia.org/wiki/Inductance

    Mutually coupled inductors can equivalently be represented by a T-circuit of inductors as shown. If the coupling is strong and the inductors are of unequal values then the series inductor on the step-down side may take on a negative value. [32] This can be analyzed as a two port network.

  7. Toroidal inductors and transformers - Wikipedia

    en.wikipedia.org/wiki/Toroidal_inductors_and...

    Toroidal inductors and transformers are inductors and transformers which use magnetic cores with a toroidal (ring or donut) shape. They are passive electronic components , consisting of a circular ring or donut shaped magnetic core of ferromagnetic material such as laminated iron , iron powder, or ferrite , around which wire is wound.

  8. What your VHS tapes are worth now - AOL

    www.aol.com/news/2016-04-05-what-your-vhs-tapes...

    When's the last time you checked your collection of VHS tapes? You may not realize it, but those outdated tapes you probably have stored in your attic or storage unit could potentially be worth ...

  9. Inductor - Wikipedia

    en.wikipedia.org/wiki/Inductor

    An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when an electric current flows through it. [1] An inductor typically consists of an insulated wire wound into a coil.