Electrodynamic transducer with longitudinally moving magnet
First Claim
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1. An electrodynamic transducer converting mechanical oscillations into electric signals and vice versa, comprising:
- (a) a coil having n pairs of sections, the members of each pair being wound in opposite directions;
(b) a magnet subdivided into separate parts and being placed into said coil and arranged for movement in a longitudinal direction;
(c) like poles of two adjacent ones of said separate parts of said magnet being arranged facing each other, said like poles being located in one of said members of said pairs of said sections of said coil; and
(d) an actuator mechanically coupled to said magnet.
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Abstract
According to the invention, the electrodynamic transducer comprises a coil with a pair of sections wound in opposite directions. Placed inside the coil is a magnet capable of moving in a longitudinal direction. The unlike poles of the magnet are located in different sections of the coil. The magnet is mechanically coupled to an actuator. The stereophonic and monophonic pickup heads and the electrodynamic microphone are built around said electrodynamic transducer.
37 Citations
42 Claims
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1. An electrodynamic transducer converting mechanical oscillations into electric signals and vice versa, comprising:
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(a) a coil having n pairs of sections, the members of each pair being wound in opposite directions; (b) a magnet subdivided into separate parts and being placed into said coil and arranged for movement in a longitudinal direction; (c) like poles of two adjacent ones of said separate parts of said magnet being arranged facing each other, said like poles being located in one of said members of said pairs of said sections of said coil; and (d) an actuator mechanically coupled to said magnet. - View Dependent Claims (2)
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3. A stereophonic pickup head comprising:
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(a) two playback channels;
a first electrodynamic transducer converting mechanical oscillations into electric signals for each said playback channel;(b) a coil of each said first electrodynamic transducer having a pair of sections the members of said pair being wound in opposite directions; (c) a magnet of each said electrodynamic transducer subdivided into separate parts and being mounted inside said coil and being arranged for longitudinal displacement therein;
like poles of two adjacent ones of said separate parts of said magnet being arranged facing each other;
said like poles arranged in one of said members of said pair of sections of said coils; and(d) a stylus holder having a stylus secured therein; (e) said magnet of each said first electrodynamic transducer being mechanically coupled to said stylus holder. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A stereophonic pickup head comprising:
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(a) two playback channels;
a first electrodynamic transducer converting mechanical oscillations into electric signals in each said playback channel;(b) a coil of each said first electrodynamic transducer having n pairs of sections the members of each pair being wound in opposite directions; (c) a hollow magnetic circuit of said first electrodynamic transducer encompassing said coil; (d) a magnet of each said first electrodynamic transducer subdivided into separate parts and being arranged inside said coil for longitudinal movement;
like poles of two adjacent ones of said separate parts of said magnet being arranged facing each other said like poles arranged in one of said members of said pairs of said sections of said coil;(e) a stylus holder having a stylus secured therein; (f) said magnet mechanically coupled to said stylus holder. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A stereophonic pickup head comprising:
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(a) two playback channels;
each having a first electrodynamic transducer for converting mechanical oscillations into electric signals in the respective playback channel;(b) a coil of each said first electrodynamic transducer having n pairs of sections wound in opposite directions; (c) a magnet of each said first electrodynamic transducer placed inside said coil and being arranged for longitudinal movement;
said magnet being formed in separate parts;
like poles of two adjacent ones of said separate parts of said magnet arranged facing each other and occuring in the area of said one section of said coil;(d) a stylus holder having a stylus secured therein, each of said electrodynamic transducers being located at a distance from said stylus holder; and (e) two flexible rods, whereby each of said magnets is mechanically coupled to said stylus holder. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A stereophonic pickup head, comprising:
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(a) two playback channels;
a first electrodynamic transducer converting mechanical oscillations into electric signals in each said playback channel;(b) a coil of each said first electrodynamic transducer having n pairs of sections wound in opposite directions; (c) a hollow magnetic circuit of said first electrodynamic transducer encompassing said coil; (d) a magnet of each said first electrodynamic transducer placed inside said coil being arranged for longitudinal movement therein;
said magnet being formed of separate parts;
the like poles of two adjacent said parts of said magnet arranged facing each other and positioned in the area of said one section of said coil;(e) a stylus holder having a stylus secured therein; and (f) said magnet mechanically coupled to said stylus holder. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. A monophonic pickup head comprising:
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(a) an electrodynamic transducer converting mechanical oscillations into electric signals; (b) a coil of said electrodynamic transducer having a pair of sections wound in opposite directions; (c) a magnet of said electrodynamic transducer divided into separate parts and being placed inside said coil and being arranged for longitudinal movement therein;
like poles of two adjacent ones of said separate parts of said magnet being arranged facing each other;
said like poles being arranged in one of said sections of said coil;(d) a hollow magnetic circuit of said electrodynamic transducer encompassing said coil; (e) a stylus holder having a stylus secured therein; (f) said magnet mechanically coupled to said stylus holder.
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39. A monophonic pickup head comprising:
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(a) an electrodynamic transducer converting mechanical oscillations into electric signals; (b) a coil of said electrodynamic transducer having n pairs of sections wound in opposite directions; (c) a magnet of said electrodynamic transducer arranged inside said coil longitudinal movement therein;
said magnet being formed of separate parts;
like poles of two adjacent ones of said parts of said magnet arranged facing each other and located in the area of said one section of said coil;(d) a hollow magnetic circuit of said electrodynamic transducer encompassing said coil; (e) a stylus holder having a stylus secured therein; (f) said magnet mechanically coupled to said stylus holer.
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40. An electrodynamic microphone comprising:
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(a) an electrodynamic transducer converting mechanical oscillations into electric signals; (b) a coil of said electrodynamic transducer having n pairs of sections wound in opposite directions; (c) a magnet of said electrodynamic transducer formed of separate parts and arranged inside said coil for longitudinal movement therein;
like poles of two adjacent ones of said parts of said magnet arranged facing each other and located in the area of said one section of said coil;(d) a diaphragm mechanically coupled to one of said unlike poles of said magnet; (e) a centring element mechanically coupled to the other unlike pole of said magnet.
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41. An electrodynamic microphone comprising:
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(a) an electrodynamic transducer converting mechanical oscillations into electric signals; (b) a coil of said electrodynamic transducer having a pair of sections wound in opposite directions; (c) a magnet of said electrodynamic transducer formed of separate parts and being arranged inside said coil for longitudinal movement therein;
said separate parts of said like poles arranged facing each other in one of said sections of said coil;(d) a hollow magnetic circuit of said electrodynamic transducer encompassing said coil; (c) a diaphragm mechanically coupled to one of said like poles of said magnet; and (f) a centering element mechanically coupled to the other like pole of said magnet.
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42. An electrodynamic microphone comprising:
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(a) an electrodynamic transducer converting mechanical oscillations into electric signals; (b) a coil of said electrodynamic transducer having n pairs of sections wound in opposite directions; (c) a magnet of said electrodynamic transducer formed of separate parts and arranged inside said coil for longitudinal movement therein;
each of said separate parts of said magnet having unlike poles;
like poles of the two adjacent parts of said magnet arranged facing each other and located in the area of one of the members of one of said pairs of said coil;(d) a hollow magnetic circuit of said electrodynamic transducer encompassing said coil; (e) a diaphragm mechanically coupled to one of said unlike poles of said magnet; and (f) a centering element mechanically coupled to the other unlike pole of said magnet.
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Specification