ES2077718T3 - CURRENT POWER SUPPLY CIRCUIT FOR AN AUDIO FREQUENCY AMPLIFIER. - Google Patents

CURRENT POWER SUPPLY CIRCUIT FOR AN AUDIO FREQUENCY AMPLIFIER.

Info

Publication number
ES2077718T3
ES2077718T3 ES91109455T ES91109455T ES2077718T3 ES 2077718 T3 ES2077718 T3 ES 2077718T3 ES 91109455 T ES91109455 T ES 91109455T ES 91109455 T ES91109455 T ES 91109455T ES 2077718 T3 ES2077718 T3 ES 2077718T3
Authority
ES
Spain
Prior art keywords
power supply
supply circuit
current power
audio frequency
frequency amplifier
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 - Lifetime
Application number
ES91109455T
Other languages
Spanish (es)
Inventor
Klaus Steiger
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Application granted granted Critical
Publication of ES2077718T3 publication Critical patent/ES2077718T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The power supply has a transformer with two sec. windings (1,2) with the same winding direction, each coupled to respective rectifiers (3,4) and charging or smoothing capacitors (5,6). The first sec. forms a lower drive voltage for a l.f. amplifier (7), and the second provides an upper drive voltage additively superimposed on the lower voltage. A switch (8,9) responds to the sensed (10) amplifier drive current to turn off the second voltage when the current' exceeds a set threshold, and to supply both voltages additively when the current's below the threshold.
ES91109455T 1990-06-20 1991-06-10 CURRENT POWER SUPPLY CIRCUIT FOR AN AUDIO FREQUENCY AMPLIFIER. Expired - Lifetime ES2077718T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4019637A DE4019637C1 (en) 1990-06-20 1990-06-20 Current supply circuit for LF amplifier of radio receiver - has two rectifying circuits for two sec. windings of mains transformer combinable by switch for higher output power

Publications (1)

Publication Number Publication Date
ES2077718T3 true ES2077718T3 (en) 1995-12-01

Family

ID=6408723

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91109455T Expired - Lifetime ES2077718T3 (en) 1990-06-20 1991-06-10 CURRENT POWER SUPPLY CIRCUIT FOR AN AUDIO FREQUENCY AMPLIFIER.

Country Status (4)

Country Link
EP (1) EP0462483B1 (en)
AT (1) ATE126371T1 (en)
DE (2) DE4019637C1 (en)
ES (1) ES2077718T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582263B1 (en) * 1992-08-06 1996-06-05 von Tscharner, Vinzenz, Dr. Regulated power supply for DC voltage
DE4232867A1 (en) * 1992-09-30 1994-03-31 Thomson Brandt Gmbh Power supply for an LF sound amplifier

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934189A (en) * 1972-02-20 1976-01-20 Tektronix, Inc. Power supply regulator high-line shunt bypass
JPS51122745A (en) * 1975-04-21 1976-10-27 Toshiba Corp Dc constant-voltage power source circuit
JPS5972807A (en) * 1982-10-20 1984-04-24 Matsushita Electric Ind Co Ltd Heat loss improving circuit
JPS6115214A (en) * 1984-06-30 1986-01-23 Nec Home Electronics Ltd Power supply circuit

Also Published As

Publication number Publication date
EP0462483B1 (en) 1995-08-09
EP0462483A2 (en) 1991-12-27
DE59106194D1 (en) 1995-09-14
DE4019637C1 (en) 1991-08-08
EP0462483A3 (en) 1992-09-30
ATE126371T1 (en) 1995-08-15

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