GB900259A - Improvements in and relating to voltage regulation and current limitation circuits - Google Patents
Improvements in and relating to voltage regulation and current limitation circuitsInfo
- Publication number
- GB900259A GB900259A GB1536560A GB1536560A GB900259A GB 900259 A GB900259 A GB 900259A GB 1536560 A GB1536560 A GB 1536560A GB 1536560 A GB1536560 A GB 1536560A GB 900259 A GB900259 A GB 900259A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- voltage
- current
- resistor
- zener diode
- 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
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
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
- G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
- G05F1/38—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Rectifiers (AREA)
Abstract
900,259. Automatic voltage control systems. FELTEN & GUILLEAUME FERNMELDEANLAGEN G.m.b.H. May 2, 1960 [May 2, 1959], No. 15365/60. Class 38 (4). In an automatic voltage control and current limitation system for a transductor controlled rectifier arrangement employing a transistorized differential amplifier device, a Zener diode is used to produce a constant reference voltage and the emitter-collector path of a transistor controlled by a direct voltage derived from the load current is connected in parallel with the Zener diode. As shown, control windings 8, 9 of a transductor, not shown, are energized from the output voltage through the emitter-collector paths of transistors 1, 2 and a common resistor 4. The base electrode of transistor 1 is connected to a tapping of a voltage divider 5, 6 across the output voltage and the base electrode of transistor 2 is connected to a junction of a Zener diode 3 with a resistor 7. At the desired output voltage the voltages at bases of the transistors are equal and the control windings 8, 9 are equally energized. When the output voltage rises the transistor 1 is biased so that the current in the control winding 8 decreases. The reduced voltage across the resistor 7 causes a reduction in the current through the resistor 4 to alter the bias to the transistor 2 so that the current through the control winding 9 is also reduced, so tending to maintain the output voltage constant. In parallel with the Zener diode 3 is connected the emitter-collector path of a transistor 10 biased by the voltage drop across a resistor 11 carrying the output current. When the load current reaches a predetermined value the Zener diode current falls to zero and the bias to transistor 2 is determined by the collector voltage of the transistor 10 to limit the load current.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF28365A DE1106851B (en) | 1959-05-02 | 1959-05-02 | Circuit arrangement for voltage regulation and current limitation in transductor-regulated rectifier arrangements by means of a transistor push-pull circuit in which a Zener diode is used to generate a constant comparison voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB900259A true GB900259A (en) | 1962-07-04 |
Family
ID=7092854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1536560A Expired GB900259A (en) | 1959-05-02 | 1960-05-02 | Improvements in and relating to voltage regulation and current limitation circuits |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1106851B (en) |
| GB (1) | GB900259A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1178941B (en) * | 1963-04-19 | 1964-10-01 | Deutsche Bundespost | Circuit arrangement for starting up and operating a gas discharge lamp operated with direct current with a constant current |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE469175A (en) * | 1945-11-16 | |||
| US2634394A (en) * | 1951-01-29 | 1953-04-07 | Asea Ab | Means for making a regulator alternatively responsive to voltage and current |
-
1959
- 1959-05-02 DE DEF28365A patent/DE1106851B/en active Pending
-
1960
- 1960-05-02 GB GB1536560A patent/GB900259A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1106851B (en) | 1961-05-18 |
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