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  2. Isolation transformer - Wikipedia

    en.wikipedia.org/wiki/Isolation_transformer

    An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety reasons or to reduce transients and harmonics. [1]

  3. Galvanic isolation - Wikipedia

    en.wikipedia.org/wiki/Galvanic_isolation

    Galvanic isolation is a principle of isolating functional sections of electrical systems to prevent current flow; no direct conduction path is permitted. [1] [2] Energy or information can still be exchanged between the sections by other means, such as capacitive, inductive, radiative, optical, acoustic, or mechanical coupling.

  4. Transformer types - Wikipedia

    en.wikipedia.org/wiki/Transformer_types

    A rotary (rotatory) transformer is a specialized transformer that couples electrical signals between two parts that rotate in relation to each other—as an alternative to slip rings, which are prone to wear and contact noise. They are commonly used in helical scan magnetic tape applications.

  5. Power dividers and directional couplers - Wikipedia

    en.wikipedia.org/wiki/Power_dividers_and...

    In figure 17 a circuit is shown which is meant for weak coupling and can be understood along these lines: A signal is coming in one line pair. One transformer reduces the voltage of the signal the other reduces the current. Therefore, the impedance is matched. The same argument holds for every other direction of a signal through the coupler.

  6. Transformer - Wikipedia

    en.wikipedia.org/wiki/Transformer

    In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits.A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core.

  7. Toroidal inductors and transformers - Wikipedia

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

    Transformer designers attempt to minimize the electric field coupling. For the rest of this section, ∇ ϕ {\displaystyle \nabla \phi \,} will assumed to be zero unless otherwise specified. Stokes theorem applies, [ 12 ] so that the path integral of A is equal to the enclosed B flux, just as the path integral B is equal to a constant times the ...

  8. Impedance matching - Wikipedia

    en.wikipedia.org/wiki/Impedance_matching

    To match electrical impedances, engineers use combinations of transformers, resistors, inductors, capacitors and transmission lines. These passive (and active) impedance-matching devices are optimized for different applications and include baluns , antenna tuners (sometimes called ATUs or roller-coasters, because of their appearance), acoustic ...

  9. Distribution transformer - Wikipedia

    en.wikipedia.org/wiki/Distribution_transformer

    Transformers designed for below-grade installation can be designed for periodic submersion in water. [14] Distribution transformers may include an off-load tap changer, which slightly adjusts the ratio between primary and secondary voltage to bring the customer's voltage within the desired range on long or heavily loaded lines. [citation needed]

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