GB1063710A - A protective circuit arrangement for a stabilised transistorised supply system - Google Patents
A protective circuit arrangement for a stabilised transistorised supply systemInfo
- Publication number
- GB1063710A GB1063710A GB4999063A GB4999063A GB1063710A GB 1063710 A GB1063710 A GB 1063710A GB 4999063 A GB4999063 A GB 4999063A GB 4999063 A GB4999063 A GB 4999063A GB 1063710 A GB1063710 A GB 1063710A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- transistor
- resistor
- diode
- excess
- 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
- 230000001681 protective effect Effects 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000001052 transient effect Effects 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
-
- 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)
- Protection Of Static Devices (AREA)
- Amplifiers (AREA)
Abstract
1,063,710. Protecting transistor circuits. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. Dec. 18, 1963 [Dec. 21, 1962], No. 49990/63. Heading H3T. [Also in Division G3] The series regulating transistor Tp of a voltage stabilizer is protected against excess voltage and current by a circuit comprising a further transistor TB, a Zener diode D2 connected to the base of transistor TB and responsive to excess current as detected by a resistor R3, and a Zener diode DZ which is responsive to the voltage drop across the transistor TP and which has its cathode connected to the cathode of diode D2 and to resistor R3 by way of a resistor R4 and its anode connected over a resistor R2 to the junction between a resistor R1 and a capacitor C in series across the supply voltage Ua. In operation, the voltage across the resistor R3 under excess current conditions causes the voltage Uc across the points B and E of the circuit to exceed the threshold voltage of the diode D2 which conducts to cut-off transistor Tp by way of transistor TB. Further, the voltage Uc is also a function of the voltage across resistor R4; this latter voltage arises when diode DZ conducts in response to an excess voltage Up across the transistor Tp, under which conditions the voltage Uc again exceeds the threshold voltage of diode D2 which functions to cut-off transistor Tp. Thus the arrangement is such that the maximum current in the circuit under both excess voltage and fault conditions is limited so that transistor Tp is not overloaded. The RC network R1, R2, C absorbs transient surges in the supply, whilst the capacitor C also acts automatically to reset the regulator on removal of overload conditions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR919481A FR1355575A (en) | 1962-12-21 | 1962-12-21 | Protection device for stabilized transistor power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1063710A true GB1063710A (en) | 1967-03-30 |
Family
ID=8793416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4999063A Expired GB1063710A (en) | 1962-12-21 | 1963-12-18 | A protective circuit arrangement for a stabilised transistorised supply system |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT248547B (en) |
| BE (1) | BE641435A (en) |
| DE (1) | DE1254746B (en) |
| FR (1) | FR1355575A (en) |
| GB (1) | GB1063710A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656553A (en) * | 1986-01-21 | 1987-04-07 | Comair Rotron, Inc. | Electronically programmable universal brushless DC fan with integral tracking and locked rotor protection |
| CN113824294A (en) * | 2021-08-31 | 2021-12-21 | 珠海格力电器股份有限公司 | Switch tube protection circuit and drive circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2976475A (en) * | 1957-04-08 | 1961-03-21 | Gen Electric | Electrical signal regulator |
| DE1072714B (en) * | 1958-02-13 | 1960-01-07 | Westinghouse Electric Corporation, East Pittsburgh, Pa. (V. St. A.) | Power supply protection circuit |
| US3048718A (en) * | 1959-01-13 | 1962-08-07 | Gen Motors Corp | Transient responsive protection circuit |
| FR1256489A (en) * | 1959-05-29 | 1961-03-17 | North American Aviation Inc | Short circuit protection device |
| DE1084820B (en) * | 1959-07-14 | 1960-07-07 | Licentia Gmbh | Short-circuit protection circuit for transistor power supplies |
-
1962
- 1962-12-21 FR FR919481A patent/FR1355575A/en not_active Expired
-
1963
- 1963-12-16 AT AT1006463A patent/AT248547B/en active
- 1963-12-17 DE DE1963C0031698 patent/DE1254746B/en active Pending
- 1963-12-18 GB GB4999063A patent/GB1063710A/en not_active Expired
- 1963-12-18 BE BE641435A patent/BE641435A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT248547B (en) | 1966-08-10 |
| BE641435A (en) | 1964-04-16 |
| FR1355575A (en) | 1964-03-20 |
| DE1254746B (en) | 1967-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3218542A (en) | Electronic circuit protector | |
| GB1284964A (en) | Automatically resetting voltage transient rpotection device | |
| US3246206A (en) | Voltage surge protector | |
| US3359434A (en) | Silicon controlled rectifier arrangement for improved shortcircuit protection | |
| US3109980A (en) | Short circuit protection device | |
| US3192441A (en) | Means for protecting regulated power supplies against the flow of excessive currents | |
| GB1031465A (en) | Alternating current overload protection circuits | |
| US3790856A (en) | Overvoltage protection circuit for dual outputs of opposite polarity | |
| US3405319A (en) | Series regulator with disabling network | |
| US4028737A (en) | Transient voltage protection circuit | |
| GB1257318A (en) | ||
| US3449634A (en) | Overvoltage protection device for regulated power supplies | |
| US4672585A (en) | Device for stopping the running of programs being executed in a microprocessor prior to the disappearance of the power supply voltage of the microprocessor | |
| GB1110123A (en) | Improvements relating to the protection of semi-conductor apparatus | |
| GB1063710A (en) | A protective circuit arrangement for a stabilised transistorised supply system | |
| GB1399498A (en) | Television receivers | |
| GB1262828A (en) | An installation comprising a current converter comprising semiconductor rectifier elements and a monitoring arrangement for the current converter | |
| GB1184079A (en) | Improvements in and relating to Surge Protection Circuits for Electrical Generators | |
| US3577035A (en) | Power transistor protection circuit | |
| US3106674A (en) | Regulator protection circuits | |
| GB1347007A (en) | Vehicle battery charging system | |
| US3344318A (en) | Semi-conductor power supply regulator and protective circuitry therefor | |
| GB960667A (en) | Voltage surge protector | |
| US3354378A (en) | Regulated power supply with overload and overvoltage protection | |
| GB1254711A (en) | Improvements relating to voltage transient protection |