GB751679A - Improvements in or relating to supply circuits - Google Patents
Improvements in or relating to supply circuitsInfo
- Publication number
- GB751679A GB751679A GB20866/54A GB2086654A GB751679A GB 751679 A GB751679 A GB 751679A GB 20866/54 A GB20866/54 A GB 20866/54A GB 2086654 A GB2086654 A GB 2086654A GB 751679 A GB751679 A GB 751679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- load
- base
- collector
- 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.)
- 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
- G05F1/46—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
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)
- Control Of Electrical Variables (AREA)
Abstract
751,679. Automatic voltage-control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 16, 1954 [July 18, 1953], No. 20866/54. Class 38 (4). The D.C. voltage applied to a load is stabilized by connecting a D.C. source to the load via the emitter/collector path of a junction transistor or via the collector/base path of a pointcontact transistor, and controlling the first transistor by a second transistor in accordance with the difference between load voltage and a reference voltage. In one embodiment, Fig. 1, the load 2 is supplied from a battery 1 via junction transistor 5 which has its base connected via resistor 7 to the collector of the second junction transistor 6. A reference source 3, having one pole common with the battery 1, is connected to the base of transistor 6, the collector of which is connected via resistor 7 to the base of transistor 5. Variations in load voltage are amplified by transistor 6 to control the base current of transistor 5 and hence the supply to the load. Resistor 8 serves to maintain the correct bias voltage for the base of transistor 5 and the collector of transistor 6. The reference source 3 may be shunted by a resistor 9 to carry the reverse current which would otherwise flow through the source 3. In a modification, Fig. 2 (not shown), the transistor 6 is replaced by one of opposite conductivity type, so that the resistors 7 and 8 of Fig. 1 may be dispensed with. In a second modification, Fig. 3, the load 2 is supplied from battery 1 via the collector/emitter path of transistor 5<SP>1</SP>, the base of which is again connected to the collector of transistor 6 which now has its base connected to the load and its emitter connected to the reference source. Resistors 7, 8 again provide bias. In a third modification, Fig. 4 (not shown) the transistor 6 of Fig. 3 is replaced by one of opposite conductivity. In a fourth modification, Fig. 5, the load 2 is supplied via the collector/base path of a point contact transistor 5<SP>11</SP>, the emitter of which is controlled by the junction transistor 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL751679X | 1953-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB751679A true GB751679A (en) | 1956-07-04 |
Family
ID=19825137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20866/54A Expired GB751679A (en) | 1953-07-18 | 1954-07-16 | Improvements in or relating to supply circuits |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE530485A (en) |
| DE (1) | DE1003820B (en) |
| FR (1) | FR1104688A (en) |
| GB (1) | GB751679A (en) |
| NL (1) | NL92533C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3023326A (en) * | 1958-01-06 | 1962-02-27 | North American Aviation Inc | Overload protection circuit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1116779B (en) * | 1958-10-16 | 1961-11-09 | Standard Elektrik Lorenz Ag | Circuit arrangement for current regulation |
| DE1100779B (en) * | 1960-10-29 | 1961-03-02 | Reinald Greiller | Electronic control circuit for DC voltage systems |
-
0
- NL NL92533D patent/NL92533C/xx active
- BE BE530485D patent/BE530485A/xx unknown
-
1954
- 1954-07-14 DE DEN9192A patent/DE1003820B/en active Pending
- 1954-07-16 GB GB20866/54A patent/GB751679A/en not_active Expired
- 1954-07-16 FR FR1104688D patent/FR1104688A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3023326A (en) * | 1958-01-06 | 1962-02-27 | North American Aviation Inc | Overload protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1003820B (en) | 1957-03-07 |
| BE530485A (en) | |
| NL92533C (en) | |
| FR1104688A (en) | 1955-11-23 |
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