DE2155076A1 - DC voltage converter with output voltage stabilized against fluctuations in the input voltage - Google Patents
DC voltage converter with output voltage stabilized against fluctuations in the input voltageInfo
- Publication number
- DE2155076A1 DE2155076A1 DE19712155076 DE2155076A DE2155076A1 DE 2155076 A1 DE2155076 A1 DE 2155076A1 DE 19712155076 DE19712155076 DE 19712155076 DE 2155076 A DE2155076 A DE 2155076A DE 2155076 A1 DE2155076 A1 DE 2155076A1
- Authority
- DE
- Germany
- Prior art keywords
- voltage
- transformer
- winding
- series
- input voltage
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
- H02M3/3385—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement with automatic control of output voltage or current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
Gleichspannungswandler mit gegeniiber Schwankungen der Eingangsspannung stabilisierter Ausgangsspannung.DC voltage converter with opposite fluctuations in the input voltage stabilized output voltage.
Die Erfindung betrifft einen Gleichspannungswandler mit gegenüber Schwankungen der Eingangsspannung stabilisierter Aus gangsspannung.The invention relates to a DC voltage converter with opposite Fluctuations in the input voltage of the stabilized output voltage.
Eine bekannte Ausführungsform löst dies durch eine parallel zum Ausgang liegende Zenerdiode. Dies hat den Nachteil, dass mit steigender Eingangsspannung der Strom durch die Zenerdiode und damit auch der Eingangsstrom proportional ansteigt und dadurch eine annihernd quadratisch anwachsende Leistung durch die Stabilisierung verbraucht wird. Bei sehr grosser Schwankungsbreite der Eingangsspannung erreicht die durch die Stabilisierung bedingte Verlustleistung Werte, die bis zum Mehrfachen der übertragenen Leistung ansteigen können. Dadurch wird auch der Transistor auf der Eingangsseite immer mehr belastet.A known embodiment solves this by a parallel to the output lying zener diode. This has the disadvantage that with increasing input voltage the current through the Zener diode and thus the input current increases proportionally and thereby an almost quadratically increasing power due to the stabilization is consumed. Achieved with a very large fluctuation range of the input voltage the power loss caused by the stabilization values that multiply the transferred power can increase. This also turns the transistor on the input side more and more burdened.
Eine weitere bekannte Ausführung erreicht die Stabilisierung durch eine galvanische Rgekkopplung von der Ausgangsseite an die Basis des Schalttransistors. Diese AusfUhrungsform ist nur dann verwendbar, wenn die galvanische Verbindung zwischen Eingangsseite und Ausgangsseite zulässig ist.Another known design achieves the stabilization by a galvanic coupling from the output side to the base of the switching transistor. This embodiment can only be used if the galvanic connection between Entry side and exit side is permitted.
Schliesslich ist noch bekannt, im Gleichspannungswandler vor der Wiede rglei chri chtung eine Schaltungsanordnung zur Impulsbreiteregelung vorzusehen. Diese Schaltungsanordnung ist aber relativ aufwendig.Finally, it is still known in the DC / DC converter before the Wiede Equivalent to provide a circuit arrangement for pulse width control. However, this circuit arrangement is relatively complex.
Aufgabe der Erfindung ist es, einen Gleiehspannungswandler mit gegenüber Sehwaakungen der Eingangsspannung stabilisierter Ausgangsspannung mit einem Transformator, einem zur Primärwicklung des Transformators in Serie geschalteten Schalttransistor, der durch die in einer Mittkopplungswicklung induzierte elektromotorische Kraft gesteuert ist, und einer der Sekundärwicklung des Transformators nachgeschalteten Gleichrichteranordnung anzugeben, der die Stabilisierung der Ausgangsspannung mit einfachen Mitteln mit nur linearer Steigerung der aufgenommenen Leistung bei steigender Eingangsspannung und ohne galvanische Verbindung von Eingangs- und Ausgangsseite erreicht, Erfindungsgemäss wird dies dadurch gelöst, dass eine Gegenkopplungs wicklung des Transformators und eine Zenerdiede in Serie zu dieser vorgesehen sind und diese Serienschaltung in Serie zur Mitkopplungswicklung liegt, wobei der die Durchbruchsspannung der Zenerdiode Übersteigende Teil der in der Gegenkopplungswicklung induzierten elektromotorischen Kraft der in der Mitkopplungswicklung des Transformators induzierten elektromotorischen Kraft überlagert ist und dieser entgegenwirkt und damit im wesentlichen das Yerhältnls der Offnungszeit zur Sperrzeit des Schalttransistors in Abhängigkeit von der Eingangsspannung ändert.The object of the invention is to provide a DC voltage converter with opposite Visual measurements of the input voltage of stabilized output voltage with a transformer, a switching transistor connected in series with the primary winding of the transformer, the electromotive force induced in a feedforward winding is controlled, and one of the secondary winding of the transformer downstream Specify rectifier arrangement that stabilizes the output voltage with simple means with only a linear increase in the power consumed with increasing Input voltage and without galvanic connection between input and output side achieved, according to the invention this is achieved in that a negative feedback winding of the transformer and a Zenerdiede in series with this are provided and this Series connection is in series with the positive feedback winding, where the breakdown voltage The excess of the Zener diode induced in the negative feedback winding electromotive force induced in the positive feedback winding of the transformer electromotive force is superimposed and this counteracts and thus essentially the ratio of the opening time to the blocking time of the switching transistor as a function of changes from the input voltage.
Die Erfindung wird anhand des in der Figur dargestellten Prinzipschaltbildes eines AusfUhrungsbeispiels eines erfindungsgemässen Gleichspannungswandlers näher erläutert.The invention is based on the basic circuit diagram shown in the figure of an exemplary embodiment of a DC voltage converter according to the invention explained.
Der Transformator Tr besitzt vier Wicklungen, die Primärwicklung W 1, die Mitkopplungswieklung W 2, die Gegenkopplungswicklung W 3 und die Sekundärricklung W 4. In Serie zur Primärwicklung W 1 ist der Schalttransistor T mit seinem Emitterwiderstand R 2 geschaltet. Er wird durch die in der Mitkopplungswicklung W 2 induzierte elektromotorische Kraft an seiner Basis gesteuert. Der Kondensator C 1 dienst als Startkondensator, der Widerstand R 1 zur Basisruhestromeinstellung. Zwischen die Basis und den Emitter des Transistors T ist die Easisschutzdiode D 1 geschaltet.The transformer Tr has four windings, the primary winding W. 1, the positive feedback W 2, the negative feedback winding W 3 and the secondary winding W 4. In series with the primary winding W 1 is the switching transistor T with its emitter resistor R 2 switched. It is driven by the electromotive force induced in the positive feedback winding W 2 Force controlled at its base. The capacitor C 1 serves as a starting capacitor, the Resistor R 1 for basic quiescent current setting. Between the base and the emitter of the transistor T, the Easisschutzdiode D 1 is connected.
Diese Schaltungsanordnung für die Primärseite eines Gleichspannungswandlers ist bekannt. Erfindungsgemäss wird nun zur Stabilisierung der Ausgangsspannung gegenüber Schwankungen der Eingangsspannung der die Durcbbruchsspannung der Zenerdiode ZD übersteigende Teil der in der Gegenkopplungswicklung W 9 induzierten elektromotorischen Kraft der in der Mitkopplungswicklung W 2 induzierten elektromotorischen Kraft überlagert. Er wirkt dieser entgegen und bewirkt damit im wesentlichen eine Änderung des Vexhäitnisses der Öffnungszeit zur Sperrzeit des Schalttransistors T in Abhängigkeit von der Eingangsspannung.This circuit arrangement for the primary side of a DC voltage converter is known. According to the invention is now used to stabilize the output voltage Fluctuations in the input voltage of the breakdown voltage of the Zener diode ZD Exceeding part of the electromotive induced in the negative feedback winding W 9 Superimposed on the force of the electromotive force induced in the positive feedback winding W 2. It counteracts this and thus essentially changes the ratio the opening time to the blocking time of the switching transistor T as a function of the input voltage.
An die Sekundärwicklung W 4 des Transformators Tr ist eine Spannungsverdopplerschaltung, bestehend aus den Kondensatoren C 2 und C 3 und den Dioden D 2 und D 3, angeschaltet. An Stelle der in der Figur dargestellten Spannungsverdopplerschaltung kann auch eine andere Gleichrichterschaltung, z.B. eine Vollweg- oder eine Einweggleichrichterschaltung, verwendet werden.A voltage doubler circuit is connected to the secondary winding W 4 of the transformer Tr consisting of the capacitors C 2 and C 3 and the diodes D 2 and D 3, switched on. Instead of the voltage doubler circuit shown in the figure, another rectifier circuit, e.g. a full-wave or half-wave rectifier circuit, be used.
Am Ausgang ist der Lastwiderstand ß angeschlossen.The load resistance ß is connected to the output.
1 Patentanspruch 1 B1. Zeichnung mit 1 Fig.1 claim 1 B1. Drawing with 1 Fig.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1009370A AT305435B (en) | 1970-11-10 | 1970-11-10 | DC / DC converter with output voltage stabilized against fluctuations in the input voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2155076A1 true DE2155076A1 (en) | 1972-05-18 |
Family
ID=3619836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712155076 Pending DE2155076A1 (en) | 1970-11-10 | 1971-11-05 | DC voltage converter with output voltage stabilized against fluctuations in the input voltage |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT305435B (en) |
| DE (1) | DE2155076A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047103A1 (en) * | 1979-11-29 | 1982-07-15 | Klaus Dipl.-Ing. 6239 Eppstein Becker | Supply circuit for motor in electric razor - has adjustable zener diode in base circuit of transistor switch |
| EP0072661A2 (en) * | 1981-08-17 | 1983-02-23 | Compower Corporation | Switching power supply |
| DE3413207A1 (en) * | 1983-04-11 | 1984-10-18 | N.V. Philips' Gloeilampenfabrieken, Eindhoven | POWER SUPPLY SWITCHING |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5631115A (en) * | 1979-08-22 | 1981-03-28 | Hitachi Ltd | Switching power source |
-
1970
- 1970-11-10 AT AT1009370A patent/AT305435B/en not_active IP Right Cessation
-
1971
- 1971-11-05 DE DE19712155076 patent/DE2155076A1/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047103A1 (en) * | 1979-11-29 | 1982-07-15 | Klaus Dipl.-Ing. 6239 Eppstein Becker | Supply circuit for motor in electric razor - has adjustable zener diode in base circuit of transistor switch |
| EP0072661A2 (en) * | 1981-08-17 | 1983-02-23 | Compower Corporation | Switching power supply |
| EP0072661A3 (en) * | 1981-08-17 | 1983-12-21 | Compower Corporation | Switching power supply |
| DE3413207A1 (en) * | 1983-04-11 | 1984-10-18 | N.V. Philips' Gloeilampenfabrieken, Eindhoven | POWER SUPPLY SWITCHING |
Also Published As
| Publication number | Publication date |
|---|---|
| AT305435B (en) | 1973-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHA | Expiration of time for request for examination |