GB1075419A - Improvements in voltage regulated power supplies - Google Patents
Improvements in voltage regulated power suppliesInfo
- Publication number
- GB1075419A GB1075419A GB1399966A GB1399966A GB1075419A GB 1075419 A GB1075419 A GB 1075419A GB 1399966 A GB1399966 A GB 1399966A GB 1399966 A GB1399966 A GB 1399966A GB 1075419 A GB1075419 A GB 1075419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- voltage
- output voltage
- transistor
- march
- 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
- 230000001105 regulatory effect Effects 0.000 title abstract 2
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
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
- G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
- G05F1/573—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector
- G05F1/5735—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector with foldback current limiting
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)
Abstract
1,075,419. Automatic control of current and voltage. INTERNATIONAL STANDARD ELECTRIC CORPORATION. March 30, 1966 [March 30, 1965], No. 13999/66. Heading G3R. In a voltage regulator of the series transistor type, the impedance of regulating transistors Q1 Q4, connected as a Darlington pair, is controlled by a negative feedback loop including Zener diode Z and transistors Q3, Q2, Q5 so that the output voltage is maintained constant up to a predetermined value of load current, Q5 being saturated. If the current increases further the output of voltage drops sharply causing Q2 to saturate and limit the current through Q1; the regulator then supplies a constant current and there is no feedback round the loop. A still further decrease in load resistance causes a further fall in voltage so that Q5 is lifted out of saturation reducing the drive to Q1, Q4 so that the output voltage falls rapidly to zero because of the positive feedback now provided. The output voltage is set by adjustment of potentiometer R4, and the short circuit current is determined by resistor R10 which is connected in series with an overload alarm lamp L across transistor Q1. A reset switch S is provided so that normal operating conditions can be restored when the overload is removed. A modified arrangement, using one transistor instead of the Darlington pair, is described with reference to Fig. 2 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU56981/65A AU284822B2 (en) | 1965-03-30 | Improvements in voltage regulated power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1075419A true GB1075419A (en) | 1967-07-12 |
Family
ID=3742467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1399966A Expired GB1075419A (en) | 1965-03-30 | 1966-03-30 | Improvements in voltage regulated power supplies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1075419A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2469031A1 (en) * | 1979-10-30 | 1981-05-08 | Thomson Csf | Protector for current limited power supplies - uses changing resistance of diode in output current path to produce rapid recirculating current at high output |
| GB2308467B (en) * | 1995-12-19 | 1999-12-29 | Contec Ltd | Low cost power supply regulator |
| DE4114073C3 (en) * | 1991-04-30 | 2001-07-05 | Bosch Gmbh Robert | Circuit arrangement for stabilizing a voltage |
-
1966
- 1966-03-30 GB GB1399966A patent/GB1075419A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2469031A1 (en) * | 1979-10-30 | 1981-05-08 | Thomson Csf | Protector for current limited power supplies - uses changing resistance of diode in output current path to produce rapid recirculating current at high output |
| DE4114073C3 (en) * | 1991-04-30 | 2001-07-05 | Bosch Gmbh Robert | Circuit arrangement for stabilizing a voltage |
| GB2308467B (en) * | 1995-12-19 | 1999-12-29 | Contec Ltd | Low cost power supply regulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1062603A (en) | Current regulator | |
| GB1214574A (en) | Improvements in or relating to voltage current regulating circuits | |
| GB1075419A (en) | Improvements in voltage regulated power supplies | |
| GB1144480A (en) | Constant electrical power regulator | |
| GB940086A (en) | Improvements in or relating to voltage monitoring devices | |
| GB1126951A (en) | A voltage regulated supply circuit | |
| GB918466A (en) | Improvements in voltage-regulated power supplies incorporating current limiting circuits | |
| JPS57103522A (en) | Power supply device | |
| GB1248668A (en) | D.c. voltage regulator | |
| GB1064942A (en) | Improvements in and relating to electric power supply apparatus | |
| GB1123076A (en) | Improvements in or relating to power supply regulation | |
| GB1187312A (en) | Improvements relating to the Stabilisation of Electrical Power-Supply Systems | |
| JPS6419967A (en) | Switching control type power device | |
| JPS5717233A (en) | Input circuit | |
| GB1048035A (en) | Improvements in or relating to power supply circuits | |
| GB912616A (en) | Improvements in or relating to circuitarrangementsfor supplying a voltage of constant value to a load | |
| GB966323A (en) | Improvements in electronic regulating devices | |
| GB1174488A (en) | Improvements relating to Voltage Regulators. | |
| GB917640A (en) | Improvements in or relating to electric circuits employing transistors | |
| GB935938A (en) | Improvements in or relating to on-off regulators including a bridge circuit | |
| GB861974A (en) | Improvements in or relating to voltage stabilised electric power supplies | |
| GB1012980A (en) | D.c. voltage control with load current limitations | |
| GB889026A (en) | Improvements in or relating to voltage regulators | |
| GB872933A (en) | Improvements in or relating to voltage regulators | |
| GB1099014A (en) | Improvements in or relating to electrical pulse-stabilising circuits |