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impedance-matching transformer

См. также в других словарях:

  • Impedance matching — In electronics, impedance matching is the practice of designing the input impedance of an electrical load (or the output impedance of its corresponding signal source) to maximize the power transfer and/or minimize reflections from the load.… …   Wikipedia

  • Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …   Wikipedia

  • transformer — /trans fawr meuhr/, n. 1. a person or thing that transforms. 2. Elect. an electric device consisting essentially of two or more windings wound on the same core, which by electromagnetic induction transforms electric energy from one set of one or… …   Universalium

  • Transformer types — Circuit symbols Transformer with two windings and iron core. Step down or step up transformer. The symbol shows which winding has more turns, but not usually the …   Wikipedia

  • Matching — F/A/V Arranging for the impedances presented by a load to be equal to the internal impedance of the generator. This is essential to avoid loss of power. In microphones, the loss results in poorer signal to noise ratio. Matching is done by means… …   Audio and video glossary

  • Cable impedance — When radio frequency signals are transmitted via coaxial cable or ribbon cable, the impedance of the cable is significant in determining the load placed on the source and the efficiency of the transmission.Provided the internal impedance of the… …   Wikipedia

  • Nominal impedance — in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of: The nominal value of …   Wikipedia

  • Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… …   Wikipedia

  • Balun — Pair of AC E 120 Ohm twisted pair (Krone IDC) to 75 Ohm coaxial cable balun transformers. Actual length is about 3cm …   Wikipedia

  • Beverage antenna — The Beverage Antenna is a relatively inexpensive but very effective long wire receiving antenna used by amateur radio, shortwave listening, and longwave radio DXers and military applications. Harold H. Beverage experimented with receiving… …   Wikipedia

  • Hybrid coil — at all four ports.s.Hybrids were also used in telephones to reduce the sidetone, or volume of micrphone output that was fed back to the earpiece. Without this, the phone user s own voice would be louder in the earpiece than the other party s.… …   Wikipedia

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