CN106658316B - 一种动圈唱头消磁装置及方法 - Google Patents

一种动圈唱头消磁装置及方法 Download PDF

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CN106658316B
CN106658316B CN201611233883.6A CN201611233883A CN106658316B CN 106658316 B CN106658316 B CN 106658316B CN 201611233883 A CN201611233883 A CN 201611233883A CN 106658316 B CN106658316 B CN 106658316B
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coil
stylus
vibrating plate
moving
iron core
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CN106658316A (zh
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蒋鹏
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Hefei Feifan Sound Equipment Co ltd
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Hefei Feifan Sound Equipment Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

一种动圈唱头消磁装置，包括底座，其特征在于，所述底座上通过铰链连接有振动板，振动板的一端嵌入有唱针放入槽，振动板的另一端设有磁铁；磁铁的正上方设有铁芯，铁芯上缠绕有线圈，线圈接入可调节的交变电流。

Description

一种动圈唱头消磁装置及方法
技术领域
本发明属于黑胶唱机技术领域，尤其涉及一种动圈唱头消磁装置及方法。
背景技术
黑胶唱片作为一种声音和音乐的载体几乎占据了整个20世纪，直到1982年CD诞生。我国在1992年进入CD时代，黑胶生产线大量被淘汰，黑胶唱片的价格从30元左右跌至15元左右。但是由于收藏者的喜好，从1994年开始，黑胶唱片的价格逐渐回升，到1996年就突破百元。1998年国内最后一条黑胶生产线关闭，目前国内市场的黑胶唱片都是引进海外的，或者二手的。现在最便宜的黑胶唱片要六七十元钱，珍藏版本的可以上千。
MC唱头既动圈唱头(结构如图1所示)，其线圈铁芯由于一直处在固定磁场中，因而长期使用后铁芯会磁化，从而导致输出降低，音质劣化。而唱头里的磁铁又是重要的工作部件，因此传统的消磁器无法使用。需要开发精密、专用的消磁设备。
发明内容
为了克服现有技术中存在的不足，本发明公开了一种动圈唱头消磁装置及使用该装置消磁的方法。
本发明是通过如下技术方案实现的：
一种动圈唱头消磁装置，包括底座，所述底座上通过铰链连接有振动板，振动板的一端嵌入有唱针放入槽，振动板的另一端设有磁铁；磁铁的正上方设有铁芯，铁芯上缠绕有线圈，线圈接入可调节的交变电流。
一种动圈唱头消磁方法，包括以下步骤：
步骤一)将动圈唱头的唱针放置在唱针放入槽中，将动圈唱头输出端的两个接头短接，使唱头线圈形成闭合回路；
步骤二)向线圈通入交变电流，电流频率为50HZ，铁芯与磁铁作用，使振动板上下振动，带动唱针上下震动；
步骤三)调节交变电流的频率，使振动板的振动频率逐渐降低，动圈唱头的铁芯即被消磁；消磁全过程耗时8～10min。
与现有技术相比，本发明具有以下优点：
本发明的消磁装置巧妙、有效地解决了动圈唱头铁芯消磁的问题。操作简单、效率高。
附图说明
图1为动圈唱头示意图；
图2为实施例1结构示意图。
具体实施方式
实施例1
一种动圈唱头消磁装置，包括底座5，所述底座5上通过铰链连接有振动板4，振动板4的一端嵌入有唱针放入槽6，振动板4的另一端设有磁铁3；磁铁3的正上方设有铁芯2，铁芯2上缠绕有线圈1，线圈1接入可调节的交变电流。
一种动圈唱头消磁方法，包括以下步骤：
步骤一)将动圈唱头的唱针放置在唱针放入槽中，将动圈唱头输出端的两个接头短接，使唱头线圈形成闭合回路；
步骤二)向线圈通入交变电流，电流频率为50HZ；铁芯与磁铁作用，使振动板上下振动，带动唱针上下震动；
步骤三)调节交变电流的，使振动板的振动频率逐渐降低，动圈唱头的铁芯即被消磁。
本发明的工作原理为，震动板4与底座5通过铰链相连，形成一个跷跷板结构。而线圈1与线路部分相连，通入了交变电流的线圈与铁芯一起形成交变磁场，这个交变磁场就会吸引磁铁3产生固定频率的震动，而唱针放置于振动板4上的唱针放入槽，也就会带动唱针产生固定频率的震动，这将唱头的输出端短路，唱头线圈成为闭合线圈，唱头线圈在唱针的作用下在唱头的磁场中振动，使唱头铁芯上产生一个交变磁场。通过调节交变电流让振动板的振动逐渐减弱直至消失，从而让唱头线圈上的交变磁场逐步减弱并消失，就会对唱头线圈铁芯产生足够良好的消磁效果。
以上实施例仅用于说明本发明，但不用来限制本发明的范围，凡是依据本发明的技术实质对以下实例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (1)

1.一种动圈唱头消磁装置的动圈唱头消磁方法，其特征在于，所述的动圈唱头消磁装置包括底座，所述底座上通过铰链连接有振动板，振动板的一端嵌入有唱针放入槽，振动板的另一端设有磁铁；磁铁的正上方设有铁芯，铁芯上缠绕有线圈，线圈接入可调节的交变电流；消磁方法包括以下步骤：
步骤一）将动圈唱头的唱针放置在唱针放入槽中，将动圈唱头输出端的两个接头短接，使唱头线圈形成闭合回路；
步骤二）向线圈通入交变电流，电流频率为50HZ，铁芯与磁铁作用，使振动板上下振动，带动唱针上下震动；
步骤三）调节交变电流的频率，使振动板的振动频率逐渐降低，动圈唱头的铁芯即被消磁；消磁全过程耗时8~10min。
CN201611233883.6A 2016-12-28 2016-12-28 一种动圈唱头消磁装置及方法 Expired - Fee Related CN106658316B (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219904A (ja) * 1986-03-22 1987-09-28 Tech Res & Dev Inst Of Japan Def Agency 渦電流磁界消去装置
US4851945A (en) * 1986-10-10 1989-07-25 Joseph F. Fritsch Demagnetizing device having an oscillating permanent magnet
DE10052151A1 (de) * 1999-12-17 2001-06-28 Samsung Electro Mech Vibrationslautsprecher
CH707443A2 (de) * 2013-01-14 2014-07-15 Albert Maurer Entmagnetisierverfahren.
CN105744450A (zh) * 2014-12-25 2016-07-06 铁三角有限公司 动圈式立体声拾音头
CN105810228A (zh) * 2016-05-18 2016-07-27 合肥市菲凡音响有限责任公司 一种磁力定位的气浮唱盘
CN206272846U (zh) * 2016-12-28 2017-06-20 合肥市菲凡音响有限责任公司 一种动圈唱头消磁装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219904A (ja) * 1986-03-22 1987-09-28 Tech Res & Dev Inst Of Japan Def Agency 渦電流磁界消去装置
US4851945A (en) * 1986-10-10 1989-07-25 Joseph F. Fritsch Demagnetizing device having an oscillating permanent magnet
DE10052151A1 (de) * 1999-12-17 2001-06-28 Samsung Electro Mech Vibrationslautsprecher
CH707443A2 (de) * 2013-01-14 2014-07-15 Albert Maurer Entmagnetisierverfahren.
CN105744450A (zh) * 2014-12-25 2016-07-06 铁三角有限公司 动圈式立体声拾音头
CN105810228A (zh) * 2016-05-18 2016-07-27 合肥市菲凡音响有限责任公司 一种磁力定位的气浮唱盘
CN206272846U (zh) * 2016-12-28 2017-06-20 合肥市菲凡音响有限责任公司 一种动圈唱头消磁装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
碟片磁力终结者——古河多用途消磁器RL-30;何必;《实用影音技术》;19991215(第2期);34-35 *

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