EP0152582A2 - Régulateur électronique de tension - Google Patents

Régulateur électronique de tension Download PDF

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Publication number
EP0152582A2
EP0152582A2 EP84115212A EP84115212A EP0152582A2 EP 0152582 A2 EP0152582 A2 EP 0152582A2 EP 84115212 A EP84115212 A EP 84115212A EP 84115212 A EP84115212 A EP 84115212A EP 0152582 A2 EP0152582 A2 EP 0152582A2
Authority
EP
European Patent Office
Prior art keywords
transistor
voltage regulator
voltage
resistor
reference element
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
EP84115212A
Other languages
German (de)
English (en)
Other versions
EP0152582A3 (en
EP0152582B1 (fr
Inventor
Heribert Diplomingenieur Gorzel
Rolf Ingenieur Walsch (Grad.)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to AT84115212T priority Critical patent/ATE43926T1/de
Publication of EP0152582A2 publication Critical patent/EP0152582A2/fr
Publication of EP0152582A3 publication Critical patent/EP0152582A3/de
Application granted granted Critical
Publication of EP0152582B1 publication Critical patent/EP0152582B1/fr
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02Regulating voltage or current
    • G05F3/08Regulating voltage or current wherein the variable is DC
    • G05F3/10Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/18Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using Zener diodes

Definitions

  • the invention is based on an electronic voltage regulator according to the type specified in the preamble of claim 1.
  • the electronic voltage regulator according to the invention with the characterizing features of claim 1 has the advantage that it provides a largely constant output voltage, which is temperature-stable, based on the positive potential of the operating voltage source. Another advantage is that the voltage regulator according to the invention manages with a relatively low operating current.
  • An electronic voltage regulator according to the invention according to the figure has a voltage divider composed of three resistors R1, R2, R3 between its first connection 10, which is connected to the positive pole of the operating voltage source, and ground. Between the resistors R1 and R2 there is a first tap 11 which is connected to the base of a first transistor Tl of the pnp type. The emitter of the first transistor is connected firstly via a resistor R4 to the first connection 10 and secondly to the base of a second transistor T2 of the NPN type, the collector of which is also connected to the first connection 10.
  • the collector of the first transistor T1 and the emitter of the second transistor T2 lead together to the cathode of a reference element E, the anode of which is connected to a second tap 12 located between the resistors R2 and R3.
  • the circuit arrangement described above performs the following control functions. If, for example, the operating voltage U B for the voltage regulator rises, a higher current I S flows through the resistors Rl, R2, R3 of the voltage divider. The resulting higher voltage drop across resistor R2 controls the first transistor T1 in the conductive state. As a result, there is a current flow through the resistor R3 and the reference element E. The resulting voltage drop across the resistor R3 causes the potential to rise in the positive direction. The voltage available at the connections 13 and 14 thus remains largely constant with the appropriate dimensioning of the circuit arrangement.
  • the transistors T1 and T2 are a complementary pair of transistors, the base-emitter voltages U BE of which change in the opposite direction when the temperature changes.
  • Suitable complementary transistors are, for example, a transistor pair of the type BCW 61 D specially selected for this purpose for the transistor T1 and BCW 60 D for the transistor T2.
  • the reference element is preferably of the MPS 5010 type.
  • the resistance value of the resistor R1 is preferably equal to twice the resistance value of the resistor R2. If the voltage divider is supplemented accordingly, the voltage regulator can advantageously be used for supplying voltage to an integrated driver stage for a liquid crystal display (LCD display) which works according to the multiplex principle.
  • LCD display liquid crystal display

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Details Of Television Scanning (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Electrical Variables (AREA)
EP84115212A 1984-02-17 1984-12-12 Régulateur électronique de tension Expired EP0152582B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115212T ATE43926T1 (de) 1984-02-17 1984-12-12 Elektronischer spannungsregler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843405661 DE3405661A1 (de) 1984-02-17 1984-02-17 Elektronischer spannungsregler
DE3405661 1984-02-17

Publications (3)

Publication Number Publication Date
EP0152582A2 true EP0152582A2 (fr) 1985-08-28
EP0152582A3 EP0152582A3 (en) 1985-10-16
EP0152582B1 EP0152582B1 (fr) 1989-06-07

Family

ID=6227972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115212A Expired EP0152582B1 (fr) 1984-02-17 1984-12-12 Régulateur électronique de tension

Country Status (4)

Country Link
EP (1) EP0152582B1 (fr)
JP (1) JPH063565B2 (fr)
AT (1) ATE43926T1 (fr)
DE (2) DE3405661A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238890A (en) * 1989-10-24 1991-06-12 Samsung Electronics Co Ltd Circuit for stabilizing a reference voltage
EP1898391A1 (fr) * 2006-09-11 2008-03-12 Samsung SDI Co., Ltd. Affichage plasma et générateur de tension associé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131170A1 (de) * 1991-09-19 1993-03-25 Telefunken Electronic Gmbh Vorrichtung zur erzeugung von zwischenspannungen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1538440B2 (de) * 1966-11-23 1972-03-16 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltungsanordnung zur gleichspannungsstabilisierung nach art einer z diode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238890A (en) * 1989-10-24 1991-06-12 Samsung Electronics Co Ltd Circuit for stabilizing a reference voltage
EP1898391A1 (fr) * 2006-09-11 2008-03-12 Samsung SDI Co., Ltd. Affichage plasma et générateur de tension associé

Also Published As

Publication number Publication date
ATE43926T1 (de) 1989-06-15
DE3478650D1 (en) 1989-07-13
DE3405661A1 (de) 1985-08-22
JPS60189521A (ja) 1985-09-27
EP0152582A3 (en) 1985-10-16
JPH063565B2 (ja) 1994-01-12
EP0152582B1 (fr) 1989-06-07

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