FR2258070A1 - Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary - Google Patents

Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary

Info

Publication number
FR2258070A1
FR2258070A1 FR7400929A FR7400929A FR2258070A1 FR 2258070 A1 FR2258070 A1 FR 2258070A1 FR 7400929 A FR7400929 A FR 7400929A FR 7400929 A FR7400929 A FR 7400929A FR 2258070 A1 FR2258070 A1 FR 2258070A1
Authority
FR
France
Prior art keywords
loudspeaker
primary
amplifier
potentiometer
transformer circuit
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.)
Granted
Application number
FR7400929A
Other languages
French (fr)
Other versions
FR2258070B1 (en
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.)
OLIVERES CHARLES FR
Original Assignee
OLIVERES CHARLES FR
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 OLIVERES CHARLES FR filed Critical OLIVERES CHARLES FR
Priority to FR7400929A priority Critical patent/FR2258070A1/en
Publication of FR2258070A1 publication Critical patent/FR2258070A1/en
Application granted granted Critical
Publication of FR2258070B1 publication Critical patent/FR2258070B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

The hi-fi loudspeaker circuit has the speaker (2) coupled across a transformer's primary winding (3) and the output of the input amplifier (4) coupled to a tapping on this primary. The high impedance secondary winding (6) is bridged by a variable resistor (7). For example: the primary has 100 turns; the secondary has 2000 turns; and the part of the primary across the amplifier's output has 50 turns. (The speaker's impedance is 16 ohms, the amplifier's 4 ohms and the secondary's 8 k ohms). The variable resistor may be replaced by various switch arrangements, and the loudspeaker and amplifier may either be interchanged or connected symmetrically to the primary winding.
FR7400929A 1974-01-11 1974-01-11 Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary Granted FR2258070A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7400929A FR2258070A1 (en) 1974-01-11 1974-01-11 Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7400929A FR2258070A1 (en) 1974-01-11 1974-01-11 Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary

Publications (2)

Publication Number Publication Date
FR2258070A1 true FR2258070A1 (en) 1975-08-08
FR2258070B1 FR2258070B1 (en) 1979-01-26

Family

ID=9133373

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7400929A Granted FR2258070A1 (en) 1974-01-11 1974-01-11 Hi-fi loudspeaker transformer circuit - has amplifier and loudspeaker across primary and potentiometer across secondary

Country Status (1)

Country Link
FR (1) FR2258070A1 (en)

Also Published As

Publication number Publication date
FR2258070B1 (en) 1979-01-26

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse