Ayrton-Perry vikling

En Ayrton-Perry vikling (navngivet efter William Edward Ayrton og John Perry) er en type af bifilar viklingsmønster anvendt til vikling af metaltråd på spoleforme til at lave elektroniske komponenter. Ayrton-Perry viklings fordel er at den resulterende spole har lave værdier af parasitisk induktans og parasitisk kapacitans.^[1]^[2] Ayrton-Perry vikling med resistanstråd anvendes til at lave trådviklede radiofrekvens resistorer, som anvendes ved radiofrekvenser, hvor induktans og kapacitans er uønsket.

Ayrton-Perry viklingen laves af to separate tråde viklet i modsatte retninger langs en elektrisk isolerende spoleform og forbundet i parallel i hver ende. da der er det samme antal trådviklinger i hver retning, vil de magnetiske felter for de to spoleviklinger ophæv hinanden, så spolen har lille induktans; og da de nærliggende to trådes vindinger har omtrent den samme spænding, er der kun en lille parasitisk kapacitans mellem the vindingerne.

En ulempe er at fordi de to spolelængder er koblet i parallel, er en fire gange så lang en tråd (to gange længden af hver spole) nødvendig for en given resistans, sammenlignet med en enkelt spole.

Se også

Referencer

^ K. Padmanabhan, Electronic Components, Laxmi Publications, ISBN 81-7008-969-7, page 16
^ R. Malewski, J. H. Park, W. H. Heo, Low inductance winding installed around GIS core-conductor damps Very Fast Transient Overvoltages Citat: "...IV. ERC LOW-INDUCTANCE (AYRTON-PERRY) WINDING CALCULATION FOR THE GIS MODEL. A. Magnetic field pattern around the winding Ayrton-Perry winding is composed of two equal-length sections of the enameled wire wound clockwise and anti-clockwise as single layer on an insulating support. These two wires are connected in parallel Magnetic field pattern of Ayrton-Perry winding corresponds to that of a thin-wall tube that carries current in axial direction only. The axial component of the magnetic field is cancelled by the current circulating in clockwise and anticlockwise wound turns...", backup

[1] K. Padmanabhan, Electronic Components, Laxmi Publications, ISBN 81-7008-969-7, page 16

[2] R. Malewski, J. H. Park, W. H. Heo, Low inductance winding installed around GIS core-conductor damps Very Fast Transient Overvoltages Citat: "...IV. ERC LOW-INDUCTANCE (AYRTON-PERRY) WINDING CALCULATION FOR THE GIS MODEL. A. Magnetic field pattern around the winding Ayrton-Perry winding is composed of two equal-length sections of the enameled wire wound clockwise and anti-clockwise as single layer on an insulating support. These two wires are connected in parallel Magnetic field pattern of Ayrton-Perry winding corresponds to that of a thin-wall tube that carries current in axial direction only. The axial component of the magnetic field is cancelled by the current circulating in clockwise and anticlockwise wound turns...", backup

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