Simulerings software: Split Coil

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Split Coil

Printed From: SpeakerBuilder
Category: Software
Forum Name: Simulerings software
Forum Discription: Her kan du diskutere alt inden for simulerings software som LspCAD og lign.
URL: http://forum.speakerbuilder.dk/forum_posts.asp?TID=154
Printed Date: 27 Apr 2024 at 18:48
Software Version: Web Wiz Forums 9.56a - http://www.webwizforums.com

Topic: Split Coil

Posted By: syncroniq
Subject: Split Coil
Date Posted: 25 Aug 2009 at 13:25

Hey,

Fandt jo desværre ud af at min ide til to spoler i et gab var opfundet. Faktisk helt tilbage i 1969.

The Coil

In the woofer range large displacements are necessary, which would lead to a long and therefore heavy moving coil. These in turn would be much too slow for fast movements with their mass.

The solution is both simple and clever, but nevertheless producible only under the most difficult conditions: Two voice coils, mounted mechanically in series and switched electrically in parallel, using aluminium wire on an aluminium backing and copper strip leads, produce the solution of an overall long, but nevertheless extremely light driving coil. This is unique for a wide-band transducer in spite of a possible displacement of ± 3,5 mm and a total weight of only 0.4 grammes. A further advantage of this design is the drastic reduction in non-linearities, which are common with larger displacements.

In addition this arrangement of a double voice coil, for which Manger received a patent as far back as 1969, considerably suppresses the natural resonance.

Det bliver brugt i Mangers dødstjerne enhed:

Men patentet må være udløbet (?) så man må vel gerne bruge ideen.

Replies:

Posted By: syncroniq
Date Posted: 25 Aug 2009 at 14:23

Hey,

Her er patentet.

http://v3.espacenet.com/publicationDetails/mosaics?CC=NL&NR=7310370A&KC=A&FT=D&date=19740129&DB=EPODOC&locale=en_be - http://v3.espacenet.com/publicationDetails/mosaics?CC=NL&NR=7310370A&KC=A&FT=D&date=19740129&DB=EPODOC&locale=en_be

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Posted By: bknielsen
Date Posted: 25 Aug 2009 at 22:22

Jeg er temmelig sikker (99.7%) på, at du altid gerne må bruge idéerne i et patent til dig selv (ikke kommerciel brug), også selvom det ikke er udløbet.

I det givne tilfælde er du i sikker havn også til kommerciel brug, når det er fra 69, med mindre der findes et andet patent, som forfiner idéen, og som ikke er udløbet endnu.

Det er set, at man genbeskytter sine idéer ved at forfine og tage patent igen - Ganske vist skal man jo over den tærskel der hedder opfindelseshøjde (så det er ikke nok at male magneten i motoren rød ;-) )

Posted By: ham_den_lange
Date Posted: 26 Aug 2009 at 09:58

Et patent er noget mærkeligt noget. Det giver dig i princippet kun ret til at forhindre andre i at producere din ide.