EP0582263B1 - Alimentation stabilisée pour courant continu - Google Patents

Alimentation stabilisée pour courant continu Download PDF

Info

Publication number
EP0582263B1
EP0582263B1 EP93112380A EP93112380A EP0582263B1 EP 0582263 B1 EP0582263 B1 EP 0582263B1 EP 93112380 A EP93112380 A EP 93112380A EP 93112380 A EP93112380 A EP 93112380A EP 0582263 B1 EP0582263 B1 EP 0582263B1
Authority
EP
European Patent Office
Prior art keywords
capacitor
voltage
power supply
transistor
supply unit
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.)
Revoked
Application number
EP93112380A
Other languages
German (de)
English (en)
Other versions
EP0582263A1 (fr
Inventor
Vinzenz Dr. Von Tscharner
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6464984&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0582263(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0582263A1 publication Critical patent/EP0582263A1/fr
Application granted granted Critical
Publication of EP0582263B1 publication Critical patent/EP0582263B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

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
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices for plural loads
    • 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
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices

Definitions

  • the present invention relates to a stabilized DC power supply according to the preamble of claim 1.
  • a generic DC power supply is known from US 3,581,187.
  • the desired stabilization of the output voltage is achieved by tapping the output voltage in a control loop, comparing it with a substantially constant voltage and using an operational amplifier or the like to generate a control signal from this voltage difference, which generates the Output voltage itself is affected.
  • control principle of the generic power supply is based on a feedback, in which the comparison signal is not independent of the output voltage generated by the power supply.
  • the object of the present invention is therefore to simplify a power supply unit of the generic type, in particular to manufacture it in a simpler circuitry and more suitable for large-scale production, and to prevent an adverse reaction of voltage fluctuations at the output of the power supply unit to the stabilization process.
  • a second capacitor is charged from the first capacitor as the lower part of a cascade, this being done via the transistor, preferably a field effect transistor.
  • the voltage on the second capacitor ie the output voltage of the power supply unit
  • the voltage on the second capacitor can thus be stabilized by charging the first capacitor and by the action of the transistor T.
  • a "transformer and rectifier” G1 supplies the necessary voltage in the form of half-waves and the required current for a cascade power supply unit 10.
  • the power of the rectifier G1 is sufficient to charge a first capacitor C1 to the maximum charging voltage Umax even under full load, which is preferably between 2 to 2/3 times the output voltage Uout.
  • the capacitor C1 is thus charged as the upper level of the cascade.
  • the duration of the charging is extended due to the large voltage drop across capacitor C1 during a half-wave. Thanks to these conditions, the "transformer and rectifier” G1 is loaded longer, but less heavily. The current flows more homogeneously, and the "transformer and rectifier” G1 can therefore be dimensioned smaller.
  • the capacitor C1 has a sufficient capacity so that when the maximum current Imax at the output of the power supply is drawn, the voltage at the capacitor C1 does not drop below a minimum value during the O-passage of the supply voltage. This minimum value is higher than the output voltage of the power supply unit 10.
  • the capacitance of the capacitor C1 should not be greater than absolutely necessary so that the voltage fluctuations on the capacitor C1 - which also depend essentially on a resistor R1 - are large at full load; due to these voltage fluctuations, the "transformer and rectifier" G1 is loaded longer and thus more homogeneously at full load. However, the voltage fluctuations must be within the tolerance limit of the selected capacitor type.
  • An independent reference voltage Uref is connected to the gate of transistor T. The voltage difference between the reference voltage applied to the gate and the voltage across the second capacitor C2 controls the current of the transistor T for recharging the second capacitor C2.
  • the opening of the transistor T is caused by the small voltage drop across the second capacitor C2 with respect to the reference voltage, but not by a feedback to the gate.
  • the current of the transistor T is derived as directly as possible from the "transformer and rectifier" G1 - except during the O-passage of the supply voltage, during which it is only taken from the first capacitor C1.
  • the voltage at the second capacitor C2 is stabilized in a voltage range which is sufficiently narrow for audio amplifier operation.
  • the independent reference voltage Uref is generated by a separate transformer and rectifier G2.
  • a stabilized power supply unit is preferably used, since the stability of the output voltage essentially depends on that of the reference voltage. Since the reference voltage at the gate of the transistor T is never heavily loaded, it does not change even under extreme loads (short circuit) at the output of the cascade power supply 10. Therefore, the output voltage returns to the setpoint immediately and without vibrations even after a short-term extreme load.
  • the resistor R1 mentioned above has two functions; firstly, it increases the voltage fluctuations on capacitor C1 and secondly, it limits the current through transistor T and prevents its destruction. Too much resistance also increases the power loss and should therefore be avoided. At any time, the possible charging current for the capacitor C2, which is limited by the resistor R1, must be greater than the maximum current required by the power supply 10.
  • the second capacitor or output capacitor C2 can be charged from the "transformer and rectifier" G1 and the capacitor C1 via the transistor T. Its capacity buffers short current peaks and high-frequency electricity requirements. This also compensates for the inertia of the control circuit, which can easily lead to phase shifts, at all frequencies. Capacities that are smaller - or equal - than - or else the same as - that of the first capacitor C1 have proven successful; the time (R1 * C1) should be between 0.5 and 5 milliseconds; this causes a high damping factor in audio amplifiers and a great spontaneity of the music.
  • the main advantage of the interaction in the cascade of the capacitors C1 and C2 and the transistor T or the FET is that the charge for the output current, in particular at full load, is largely derived directly from the transformer and not, as in conventional power supplies , is temporarily stored in the capacitors C1, C2; the capacitors C1, C2 are only heavily loaded for a short time, in particular during O-passage and rapid load changes, and have buffer properties.
  • the capacitors C1, C2 in the cascade power supply unit 10 are therefore also dimensioned much smaller than in conventional power supply units.
  • the start-up of the power supply 10 can be slowed down by a capacitor (not shown in the drawing) at the gate of the transistor T (for example to 0.05 to 1 sec). This protects the FET and at the same time increases the stability of the output voltage.
  • FIG. 2 shows a circuit with a second resistor R2 and a second transistor T2 and a section for a negative Uout, capacitors C'1, C'2 and resistors R'1, R'2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Amplifiers (AREA)

Claims (7)

  1. Alimentation stabilisée à tension continue, pour une utilisation dans le domaine audio, comportant :
    - un premier condensateur (C1) qui est connecté entre les raccordements de sortie d'un redresseur (G1),
    - un deuxième condensateur (C2) qui est monté entre les bornes de sortie de l'alimentation, et
    - un transistor (T) qui est monté entre un premier raccordement du deuxième condensateur (C1) et un premier raccordement du second condensateur (C2) de telle sorte que les deux premiers raccordements sont connectés l'un à l'autre lorsque le transistor est branché,
       caractérisée en ce que :
    - chacun des deuxièmes raccordements du premier (C1) et/ou du deuxièmes condensateur (C2) sont connectés directement l'un à l'autre, et
    - un raccordement de commande du transistor est relié pour l'alimentation par une tension de référence, qui est produite indépendamment d'une tension de sortie (Uout) mesurée par l'intermédiaire du deuxième condensateur (C2).
  2. Alimentation à tension continue selon la revendication 1, caractérisée en ce que la tension de référence est une tension constante stabilisée.
  3. Alimentation à tension continue selon la revendication 1 ou 2, caractérisée en ce que les condensateurs (C1;C2) et le transistor (T) sont dimensionnés de façon à ce qu'un courant soit commandé à travers le transistor entre les premiers raccordements en réaction à la différence de tension entre la tension de référence et la tension de sortie.
  4. Alimentation à tension continue selon une des revendications 1 à 3, caractérisée par une résistance (R1) montée sur le trajet entre le premier raccordement du premier (C1) et/ou du deuxième condensateur (C2) et le transistor (T).
  5. Alimentation à tension continue selon la revendication 4, caractérisée en ce que la résistance (R1) est connectée au premier raccordement du premier condensateur (C1), et en ce que la constante de temps (C1 x R1) du premier condensateur (C1) avec la résistance (R1) se situe entre 0,5 et 5 millisecondes.
  6. Alimentation à tension continue selon l'une des revendications 1 à 5, caractérisée en ce que le redresseur (G1) est dimensionné de façon à ce qu'il puisse charger le premier condensateur (C1) à une tension (Umax) qui s'élève à 2 à 3/2 fois la tension de sortie (Uout).
  7. Aimentation selon l'une des revendications 1 à 6, caractérisée par un condensateur monté entre la tension de référence et le raccordement de commande du transistor (T).
EP93112380A 1992-08-06 1993-08-03 Alimentation stabilisée pour courant continu Revoked EP0582263B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4226022 1992-08-06
DE4226022 1992-08-06

Publications (2)

Publication Number Publication Date
EP0582263A1 EP0582263A1 (fr) 1994-02-09
EP0582263B1 true EP0582263B1 (fr) 1996-06-05

Family

ID=6464984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93112380A Revoked EP0582263B1 (fr) 1992-08-06 1993-08-03 Alimentation stabilisée pour courant continu

Country Status (2)

Country Link
EP (1) EP0582263B1 (fr)
DE (1) DE59302801D1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270158B (de) * 1961-04-19 1968-06-12 Fritz Hellige & Co G M B H Fab Schaltung zur Stabilisierung einer Speisespannung mit einem Schutz gegen Einschaltstromspitzen
US3581187A (en) * 1969-06-23 1971-05-25 Metrodynamics Corp Regulated dc power supply
EP0399598A3 (fr) * 1989-05-22 1991-03-06 Koninklijke Philips Electronics N.V. Convertisseur courant alternatif courant continu
DE4019637C1 (en) * 1990-06-20 1991-08-08 Loewe Opta Gmbh, 8640 Kronach, De 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

Also Published As

Publication number Publication date
EP0582263A1 (fr) 1994-02-09
DE59302801D1 (de) 1996-07-11

Similar Documents

Publication Publication Date Title
DE69423488T2 (de) Spannungsregler
DE60003276T2 (de) Gleichstrom/Gleichstrom Umwandler und Verfahren zum Betrieb eines Gleichstrom/Gleichstrom Umwandlers
DE69814250T2 (de) Spannungsregelung mit Lastpolstabilisation
DE19882350B4 (de) Gleichspannungskonverter mit Sollwertspannungssteuerung der Ausgansspannung
DE102005055160A1 (de) Regelschaltung zur Strom- und Spannungregelung in einem Schaltnetzteil
DE3634979A1 (de) Anordnung zur erhoehung der ausgangsleistung eines mit niedriger spannung betriebenen verstaerkers, insbesondere fuer autoradios
DE2617444A1 (de) Stabilisierte stromversorgung
DE2406258B1 (de) Schaltung zur automatischen Dynamik-Kompression oder -Expansion
EP1249925A2 (fr) Convertisseur courant continu - courant continu
DE2305291A1 (de) Signalregelschaltung
EP0582263B1 (fr) Alimentation stabilisée pour courant continu
DE69120555T2 (de) Breitband-Signalverstärker
EP0749059A2 (fr) Borne de contact de télécommunication avec régulateur de tension
EP0862271A2 (fr) Circuit comparateur
DE19755164B4 (de) Leistungsstufe eines Verstärkers/Senders
DE3213506C1 (de) Schaltungsanordnung mit einem Differenzverstaerker
DE4007953C2 (de) Gleichspannungswandler mit geschalteten Kondensatoren
DE3624391C2 (fr)
DE4235048A1 (de) Vorrichtung mit einem Netzgerät für Gleichspannung
DE4330996A1 (de) Steuereinrichtung für einen elektrischen, insbesondere einen induktiven Verbraucher
DE10027013A1 (de) Verfahren zur Ladung bzw. Entladung von piezoelektrischen Bauelementen
DE10350597B4 (de) Verfahren und Schaltungsanordnung zur Amplituden-Regelung eines oszillatorischen Signals
DE10124114A1 (de) Schaltungsanordnung zur Spannungsstabilisierung
DE2711520C3 (de) Belastungsschaltung für eine Signalquelle
DE1487395A1 (de) Regelbarer Verstaerker

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19940805

17Q First examination report despatched

Effective date: 19940905

18D Application deemed to be withdrawn

Effective date: 19950316

D18D Application deemed to be withdrawn (deleted)
GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19960605

Ref country code: FR

Effective date: 19960605

REF Corresponds to:

Ref document number: 59302801

Country of ref document: DE

Date of ref document: 19960711

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960831

EN Fr: translation not filed
PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26 Opposition filed

Opponent name: INTERESSENGEMEINSCHAFT FUER RUNDFUNKSCHUTZRECHTE G

Effective date: 19970305

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970801

Year of fee payment: 5

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971023

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980803

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20000108