EP0462314B1 - Circuit pour alimenter des charges mises à la terre avec courant indépendant de la charge - Google Patents
Circuit pour alimenter des charges mises à la terre avec courant indépendant de la charge Download PDFInfo
- Publication number
- EP0462314B1 EP0462314B1 EP90120362A EP90120362A EP0462314B1 EP 0462314 B1 EP0462314 B1 EP 0462314B1 EP 90120362 A EP90120362 A EP 90120362A EP 90120362 A EP90120362 A EP 90120362A EP 0462314 B1 EP0462314 B1 EP 0462314B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- voltage
- circuit arrangement
- independent current
- earthed
- 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
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
-
- 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 invention relates to a circuit arrangement for supplying an earthed consumer with an impressed current representing a measured value according to the preamble of the claim.
- DD PS 240 086 describes a circuit arrangement for supplying a consumer in accordance with the preamble of the claim.
- the inputs of a control amplifier are supplied with the setpoint voltage forming a measured value and an actual value voltage, the actual value voltage being tapped at a current measuring resistor through which the impressed current flows.
- FIG. 1 An arrangement known from "Semiconductor Circuit Technology", 1971, page 340 from Tietze / Schenk is shown in FIG. 1. It consists of a control amplifier with a differential stage 2 and a controllable current source 1. The control amplifier supplies an impressed current I which is dependent on a setpoint voltage 3 and flows through the load 5 of a consumer.
- the circuit arrangement forms a control circuit in which the actual value voltage 7 is used at a current measuring resistor 4 as a feedback control variable. For consumers which are connected to earth 8 on one side, there is the problem that the actual value voltage 7 representing the measured value is superimposed by a common mode signal which can fluctuate over a wide voltage range.
- the invention has for its object to design the circuit arrangement of the type mentioned in such a way that the reaction of the common mode voltage caused by the burden on the consumer to the control amplifier is minimized.
- the object is achieved according to the invention in a circuit arrangement of the type mentioned at the outset with the measures specified in the characterizing part of the claim.
- the principle of the floating reference point is used here.
- the reference potential for the setpoint voltage and the control amplifier is adjusted so that it corresponds to the voltage drop across the consumer burden. Due to this virtual reference potential, the actual value voltage 7 is free of common mode via the measuring resistor for the control amplifier.
- the floating power supply is realized by a voltage regulator, the reference potential of which is the voltage at the load of the consumer.
- FIG. 2 shows the basic circuit diagram of an embodiment of the invention.
- a differential stage 2 and a voltage-controlled current source 1 together form a control amplifier.
- the control amplifier supplies an impressed current I which is dependent on a setpoint voltage 3 and which flows through the load 5 of a consumer and causes a voltage drop U there.
- the consumer is connected to ground 8 on one side.
- a current measuring resistor 4 is connected electrically in series with the burden 5.
- the current I causes a voltage drop across the current measuring resistor 4, the actual value voltage 7, which is supplied to the non-inverting input of the differential stage 2.
- the voltage U falling across the load 5 of the consumer is fed to the input of a high-impedance impedance converter 6 with the gain one.
- the potential at the output of the impedance converter 6 at the switching point 9 is led to the inverting input of the differential stage 2 and it also serves as a reference potential for the setpoint voltage 3.
- This circuit-technical measure has the effect that the potential at the switching point 9 for the closed control loop and the setpoint voltage 3 , which represents the respective measured value, corresponds to the voltage U at the load 5 of the consumer.
- the potential at the node 9 is always tracked by the impedance converter 6 so that the differential voltage 2 of the actual value voltage 7 is not superimposed by common mode signals.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
- Control Of Voltage And Current In General (AREA)
Claims (1)
- Dispositif de commande pour alimenter un utilisateur mis à la terre avec un courant (I) indépendant de la charge et représentant une valeur de mesure, comportant un amplificateur de réglage (1, 2), dont les entrées sont alimentées par une tension de valeur prescrite (3) formant la valeur de mesure, ainsi que par une tension de valeur effective (7), et comportant une résistance de mesure de courant (4) traversée par le courant (I) indépendant de la charge, sur laquelle est prélevée la tension de valeur effective (7),
caractérisé en ce que la tension (U) tombant à la charge (5) de l'utilisateur est transmise à l'entrée d'un transformateur d'adaptation d'impédance (6) à haute impédance, et en ce que le potentiel (9) existant à la sortie du transformateur d'adaptation d'impédance (6) forme le potentiel de référence pour l'amplificateur de réglage (1, 2) et la tension de valeur prescrite (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3938460 | 1989-11-20 | ||
DE3938460A DE3938460C1 (fr) | 1989-11-20 | 1989-11-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0462314A2 EP0462314A2 (fr) | 1991-12-27 |
EP0462314A3 EP0462314A3 (en) | 1992-01-29 |
EP0462314B1 true EP0462314B1 (fr) | 1994-09-28 |
Family
ID=6393844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90120362A Revoked EP0462314B1 (fr) | 1989-11-20 | 1990-10-24 | Circuit pour alimenter des charges mises à la terre avec courant indépendant de la charge |
Country Status (5)
Country | Link |
---|---|
US (1) | US5138248A (fr) |
EP (1) | EP0462314B1 (fr) |
JP (1) | JPH0612498B2 (fr) |
CN (1) | CN1025082C (fr) |
DE (2) | DE3938460C1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5604430A (en) * | 1994-10-11 | 1997-02-18 | Trw Inc. | Solar array maximum power tracker with arcjet load |
US6239997B1 (en) * | 2000-09-01 | 2001-05-29 | Ford Motor Company | System for connecting and synchronizing a supplemental power source to a power grid |
US6919650B2 (en) * | 2002-05-31 | 2005-07-19 | Ballard Power Systems Corporation | Hybrid synchronization phase angle generation method |
DE10257632B4 (de) * | 2002-12-09 | 2005-03-03 | Zentrum Mikroelektronik Dresden Ag | Verfahren zur Signalausgabe durch AS-i-Transmitter in As-i Einheiten eines AS-i Bussystems |
CN103294090A (zh) * | 2013-05-24 | 2013-09-11 | 南京化工职业技术学院 | 直流信号发生器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3546564A (en) * | 1968-11-25 | 1970-12-08 | Us Air Force | Stabilized constant current apparatus |
US3735240A (en) * | 1971-10-15 | 1973-05-22 | Motorola Inc | Integrated circuit current regulator with differential amplifier control |
JPS603098A (ja) * | 1983-06-20 | 1985-01-09 | 株式会社日立製作所 | 電圧電流変換回路 |
DD240086A1 (de) * | 1985-08-05 | 1986-10-15 | Berlin Treptow Veb K | Spannungs-strom-wandler |
GB2182788B (en) * | 1985-11-08 | 1989-12-28 | Plessey Co Plc | Voltage regulator circuit |
DE3715886A1 (de) * | 1987-05-13 | 1988-11-24 | Philips Patentverwaltung | Steuerbare konstantstromquelle |
JP2710326B2 (ja) * | 1988-01-31 | 1998-02-10 | 日本電気株式会社 | 駆動回路 |
DE3815979A1 (de) * | 1988-05-10 | 1989-11-23 | Philips Patentverwaltung | Stromversorgungseinrichtung |
-
1989
- 1989-11-20 DE DE3938460A patent/DE3938460C1/de not_active Expired - Lifetime
-
1990
- 1990-10-24 DE DE59007348T patent/DE59007348D1/de not_active Revoked
- 1990-10-24 EP EP90120362A patent/EP0462314B1/fr not_active Revoked
- 1990-11-12 CN CN90109078A patent/CN1025082C/zh not_active Expired - Fee Related
- 1990-11-15 US US07/614,617 patent/US5138248A/en not_active Expired - Fee Related
- 1990-11-20 JP JP2312994A patent/JPH0612498B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59007348D1 (de) | 1994-11-03 |
CN1051990A (zh) | 1991-06-05 |
CN1025082C (zh) | 1994-06-15 |
EP0462314A3 (en) | 1992-01-29 |
JPH0612498B2 (ja) | 1994-02-16 |
DE3938460C1 (fr) | 1991-02-07 |
US5138248A (en) | 1992-08-11 |
JPH03175511A (ja) | 1991-07-30 |
EP0462314A2 (fr) | 1991-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69725322T2 (de) | Spannung-strom-umsetzer für hochfrequente anwendungen | |
DE102015204518B4 (de) | Offset-Kompensation für einen VDS-Ausgleicher in einer Stromerfassungsschaltung | |
DE959561C (de) | Negativer Impedanzwandler mit Transistoren | |
EP0462314B1 (fr) | Circuit pour alimenter des charges mises à la terre avec courant indépendant de la charge | |
CH427025A (de) | Verfahren zum Betrieb einer Schaltung mit einer Wheatstone'schen Brücke | |
DE2852567C2 (de) | Verstärker mit einem ersten und einem zweiten Verstärkerelement | |
DE3834880A1 (de) | Verfahren zum unterdruecken von stoersignalen bei einem ueber ein stellglied gleichspannungsversorgten verbraucher sowie anordnung und anwendung | |
DE2853829A1 (de) | Differenzverstaerkeranordnung | |
DE2023842C3 (de) | Trennschaltung | |
DE102004060212A1 (de) | Pegelumsetzer | |
DE2932051A1 (de) | Schaltungsanordnung zur umwandlung einer physikalischen groesse in ein gleichstromsignal | |
DE3942936A1 (de) | Breitbandverstaerkerstufe mit steuerbarer verstaerkung | |
DE2938346C2 (de) | Stromversorgungsschaltung | |
DE102013013528A1 (de) | Leistungsverstärkerschaltung | |
DE3724980A1 (de) | Spannungswiederholerschaltung fuer eine ohmsche komponente aufweisende last mit kompensation der oberwellenverzerrung | |
EP0687397B1 (fr) | Amplificateur electrique de puissance et procede permettant de le faire fonctionner | |
DE2650583A1 (de) | Abschwaechungsschaltung | |
DE1762561C3 (de) | In seiner Verstärkung regelbarer mehrstufiger gleichstromgekoppelter Verstärker | |
DE3926599A1 (de) | Schaltungsanordnung fuer die analogsignal-frequenz-wandlung | |
DE2947663A1 (de) | Verstaerker mit auf o v bezogenem gleichspannungseingang und auf o v bezogenem gleichstromausgang | |
AT397010B (de) | Strom- und spannungsregelschaltung für elektronische schnittstellenschaltungen in anwendung bei fernsprechvermittlungsanlagen | |
DE102004026460A1 (de) | Temperaturkompensierte Meßschaltungsanordnung mit einer magnetoresistiven Sensorbrücke sowie Abgleichverfahren zum Abgleich deren Temperaturkompensation | |
AT216055B (de) | Negativer Impedanzwandler | |
DE2318255A1 (de) | Schaltungsanordnung mit veraenderlicher verstaerkung | |
DE3206192A1 (de) | Verfahren und vorrichtung zur automatischen nullpunktkorrektur bei messeinrichtungen |
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 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT NL |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT NL |
|
17P | Request for examination filed |
Effective date: 19920414 |
|
17Q | First examination report despatched |
Effective date: 19940310 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19941012 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19941013 Year of fee payment: 5 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19941031 Year of fee payment: 5 |
|
REF | Corresponds to: |
Ref document number: 59007348 Country of ref document: DE Date of ref document: 19941103 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19941121 Year of fee payment: 5 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19941201 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: SIEMENS AG Effective date: 19950628 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: SIEMENS AG |
|
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: 19950928 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 950928 |
|
NLR2 | Nl: decision of opposition |