GB1006095A - Keying devices, particularly for electrical musical instruments - Google Patents

Keying devices, particularly for electrical musical instruments

Info

Publication number
GB1006095A
GB1006095A GB46239/61A GB4623961A GB1006095A GB 1006095 A GB1006095 A GB 1006095A GB 46239/61 A GB46239/61 A GB 46239/61A GB 4623961 A GB4623961 A GB 4623961A GB 1006095 A GB1006095 A GB 1006095A
Authority
GB
United Kingdom
Prior art keywords
impedance
transformers
controlled
series
coupled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB46239/61A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADOLF HEINRICH MICHEL
Original Assignee
ADOLF HEINRICH MICHEL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ADOLF HEINRICH MICHEL filed Critical ADOLF HEINRICH MICHEL
Publication of GB1006095A publication Critical patent/GB1006095A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
    • G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
    • G10H1/055—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements
    • G10H1/0555—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by switches with variable impedance elements using magnetic or electromagnetic means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9706—Inductive element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S84/00—Music
    • Y10S84/07—Electric key switch structure

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

1,006,095. Electrophonic musical instruments. A. H. MICHEL. Dec. 27, 1961 [Jan. 13, 1961], No. 46239/61. Addition to 974,760. Heading G5J. [Also in Division H3] In a keying circuit for an electrophonic musical instrument, circuits are coupled by transformers connected either in cascade or with their secondary windings in series. The transformer cores are soluble and are controlled by permanent magnets operated by keys. The impedance of an output winding is changed as the coupling between transformer windings changes. The coupling and the impedance being reduced or increased together. In Fig. 3, a signal source Tn is coupled to an output circuit V by transformers K 1 to K n which, as indicated, are controlled by permanent magnets. An additional core Z connected in series with secondary and primary windings of successive transformers may or may not be controlled by a permanent magnet. When transformers K 1 , K n are coupled and the impedance of output circuit V is high, the impedance of Z is reduced by saturation. In Fig. 4, the secondaries of transformers K 1 , K 2 are connected in series, only one of the transformers being controlled. A controlled impedance Z is connected across the secondaries. In the uncoupled condition of the keying device, the impedance of Z is low.
GB46239/61A 1961-01-13 1961-12-27 Keying devices, particularly for electrical musical instruments Expired GB1006095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0047686 1961-01-13

Publications (1)

Publication Number Publication Date
GB1006095A true GB1006095A (en) 1965-09-29

Family

ID=7305993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46239/61A Expired GB1006095A (en) 1961-01-13 1961-12-27 Keying devices, particularly for electrical musical instruments

Country Status (2)

Country Link
US (1) US3353030A (en)
GB (1) GB1006095A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845405A (en) * 2016-06-02 2016-08-10 福州大学 Discrete magnetic element coupling circuit and control method based on the circuit

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594488A (en) * 1968-03-18 1971-07-20 Nippon Musical Instruments Mfg Electronic musical system with magnetic field responsive switch and volume control
US3590134A (en) * 1968-03-29 1971-06-29 Nippon Musical Instruments Mfg Electronic musical system with magnetic field responsive switch and volume control
US3617600A (en) * 1968-03-30 1971-11-02 Nippon Musical Instruments Mfg Magnetic field responsive key switch device for producing attack effect in electronic musical instruments
US3598890A (en) * 1968-06-25 1971-08-10 Nippon Musical Instruments Mfg Electronic musical instrument with magneto-sensitive elements and movable permanent magnet providing glissando
JPS4815866B1 (en) * 1968-08-13 1973-05-17
US3708605A (en) * 1969-06-28 1973-01-02 Nippon Musical Instruments Mfg Magnetically operated keying device for an electronic musical instrument with touch responsive control
US3793532A (en) * 1970-01-26 1974-02-19 Vilinsky M Multiple pulse generator
US3637916A (en) * 1970-04-15 1972-01-25 Alvin S Hopping Electronic musical instrument employing differential transformer for signal coupling
JPS5040781Y2 (en) * 1971-02-25 1975-11-20
US3828643A (en) * 1973-02-20 1974-08-13 Chicago Musical Instr Co Scanner for electronic musical instrument
US4627292A (en) * 1984-07-03 1986-12-09 Randek Inc. AC transducers, methods and systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781503A (en) * 1953-04-29 1957-02-12 American Mach & Foundry Magnetic memory circuits employing biased magnetic binary cores
NL209920A (en) * 1955-08-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845405A (en) * 2016-06-02 2016-08-10 福州大学 Discrete magnetic element coupling circuit and control method based on the circuit
CN105845405B (en) * 2016-06-02 2018-06-12 福州大学 A kind of separate magnetic element termination power and its control method

Also Published As

Publication number Publication date
US3353030A (en) 1967-11-14

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