GB1410380A - Tone control circuit - Google Patents

Tone control circuit

Info

Publication number
GB1410380A
GB1410380A GB5785872A GB5785872A GB1410380A GB 1410380 A GB1410380 A GB 1410380A GB 5785872 A GB5785872 A GB 5785872A GB 5785872 A GB5785872 A GB 5785872A GB 1410380 A GB1410380 A GB 1410380A
Authority
GB
United Kingdom
Prior art keywords
resistance
reactance
circuit
inverting
inputs
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
GB5785872A
Inventor
D Huszty
K Szabados
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.)
Elektroakusztikai Gyar
Original Assignee
Elektroakusztikai Gyar
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 Elektroakusztikai Gyar filed Critical Elektroakusztikai Gyar
Publication of GB1410380A publication Critical patent/GB1410380A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/025—Equalizers; Volume or gain control in limited frequency bands
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices

Landscapes

  • Networks Using Active Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

1410380 Amplifier circuits ELEKTROAKUSZTIKAI GYAR 14 Dec 1972 [15 Feb 1972] 57858/72 Heading H3W A tone control circuit comprises: an amplifier having inverting and non-inverting inputs; resistors R<1>1, R2 connecting the inputs respectively to earth; a feedback resistor R<1>2 connected between the output and the inverting input; and a potential divider P1 or P2 connected between the two inputs with its tapping point connected to earth via a resistance/reactance circuit. For low frequency control, Fig. 3, the resistance/reactance circuit includes inductive reactance L and a resistance capacitance circuit C1, R1 connected between a signal input terminal and the non-inverting amplifier input. For high frequency control, Fig. 8, the reactance is a capacitor C, and the resistance-capacitance circuit comprises a series resistor R1 and a shunt capacitor C2. For more complex control, various combinations of L, C, R may be used in the resistance-reactance circuit, and the resistance capacitance circuit may comprise series and shunt capacitance Fig. 16 (not shown), a number of potential dividers, each with its own resistance-reactance circuit may be connected in parallel, Figs. 12, 14 (not shown), and a number of such tone control circuits may be connected in parallel Figs. 18, 19 (not shown). The potential divider may comprise two fixed resistors Fig. 11 (not shown), and the input signal may be applied via a transformer.
GB5785872A 1972-02-15 1972-12-14 Tone control circuit Expired GB1410380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE2004A HU163256B (en) 1972-02-15 1972-02-15

Publications (1)

Publication Number Publication Date
GB1410380A true GB1410380A (en) 1975-10-15

Family

ID=10995426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5785872A Expired GB1410380A (en) 1972-02-15 1972-12-14 Tone control circuit

Country Status (13)

Country Link
US (1) US3816661A (en)
AT (1) AT341581B (en)
BG (1) BG20834A3 (en)
CA (1) CA983402A (en)
CS (1) CS188885B2 (en)
DD (1) DD98404A5 (en)
DE (1) DE2243608A1 (en)
FR (1) FR2172639A5 (en)
GB (1) GB1410380A (en)
HU (1) HU163256B (en)
PL (1) PL84703B1 (en)
SE (1) SE375420B (en)
SU (3) SU635903A3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511098C2 (en) * 1975-03-13 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for decoding a frequency-modulated stereo broadcast signal
US3980965A (en) * 1975-05-16 1976-09-14 Rockwell International Corporation Frequency response control circuit apparatus
JPS5340257A (en) * 1976-09-25 1978-04-12 Nippon Gakki Seizo Kk Tone control circuit
DE2739194C2 (en) * 1977-08-31 1982-10-21 Standard Elektrik Lorenz Ag, 7000 Stuttgart Circuit arrangement with an LF amplifier and a tone color setting arrangement for the high tones connected to its LF input
JPS56132804A (en) * 1980-03-22 1981-10-17 Sharp Corp Operational tone quality control circuit
IL61198A (en) * 1980-10-03 1982-08-31 Dohan David Amplification method for a stereo system and an arrangement for carrying out this method
US4538298A (en) * 1982-09-29 1985-08-27 Bose Corporation Fixed bandpass tone controlling
JPH0241934Y2 (en) * 1984-10-15 1990-11-08
JPH0712133B2 (en) * 1988-10-21 1995-02-08 三菱電機株式会社 Sound quality adjustment device
US5994956A (en) * 1998-05-06 1999-11-30 Concorso; James A. Inductive-capacitive feedback compensation for amplifier systems
US6078215A (en) * 1998-07-20 2000-06-20 Fiori, Jr.; David Impedance altering apparatus
US20080111607A1 (en) * 2006-11-10 2008-05-15 Hart Robert T Amplitude-linear differential phase shift circuit

Also Published As

Publication number Publication date
PL84703B1 (en) 1976-04-30
FR2172639A5 (en) 1973-09-28
SU593678A3 (en) 1978-02-15
SU635903A3 (en) 1978-11-30
US3816661A (en) 1974-06-11
ATA750972A (en) 1977-06-15
DD98404A5 (en) 1973-06-12
AT341581B (en) 1978-02-10
HU163256B (en) 1973-07-28
SE375420B (en) 1975-04-14
CS188885B2 (en) 1979-03-30
CA983402A (en) 1976-02-10
DE2243608A1 (en) 1973-10-11
SU580854A3 (en) 1977-11-15
BG20834A3 (en) 1975-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee