GB1453996A - Power supply and battery charging circuit for mains or battery operated electronic equipment - Google Patents
Power supply and battery charging circuit for mains or battery operated electronic equipmentInfo
- Publication number
- GB1453996A GB1453996A GB1694274A GB1694274A GB1453996A GB 1453996 A GB1453996 A GB 1453996A GB 1694274 A GB1694274 A GB 1694274A GB 1694274 A GB1694274 A GB 1694274A GB 1453996 A GB1453996 A GB 1453996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- battery
- equipment
- contacts
- voltage
- mains
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
1453996 Mains/battery supply systems; battery charging circuits SABA SCHWARZWAELDER APPARATE-BAU - ANSTALT AUGUST SCHWER SOEHNE GmbH 18 April 1974 [22 May 1973] 16942/74 Heading H2H A circuit for supplying power to equipment such as a portable television set from a mains supply, an external battery 3 or a built-in battery 17, comprises two change over contact assemblies 14, 15 and a voltage stabilizing circuit so that when the equipment is switched on a stabilized output voltage is supplied to the equipment and when the equipment is switched off an increased stabilized output voltage is supplied to charge the battery 17. When the equipment is switched on contacts a, b of the assemblies 14, 15 are closed and, assuming that a mains plug has not been inserted in a socket 1, contacts 22a, b are closed. A transistor 8, connected to a voltage divider 9, 10 and a zener diode 12, controls a transistor 7 which provides the equipment with a stabilized voltage derived from the battery 3 or 17. Alternatively, when the mains plug is inserted, contacts 22 b, c are closed to disconnect the battery 17 and supply the equipment with the stabilized voltage derived from a transformer 2 and a rectifier 6. When the equipment is switched off, the contacts b, c of the assemblies 14, 15 are closed and the output voltage is stabilized at a higher level by a voltage divider 18, 19 and a zener diode 20. This voltage charges the battery 17 via the closed contacts 15b, c and 22b, c. To prevent the battery 17 discharging through the contacts 22b, c, 15b, c, 14b, c and the voltage divider 18, 19 when the equipment is switched off and the mains plug is inserted but disconnected from the supply, transistors 25, 30 are provided, the transistors being non-conductive in these conditions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732325890 DE2325890C2 (en) | 1973-05-22 | 1973-05-22 | Mains and charging circuit for a battery-operated electronic device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1453996A true GB1453996A (en) | 1976-10-27 |
Family
ID=5881711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1694274A Expired GB1453996A (en) | 1973-05-22 | 1974-04-18 | Power supply and battery charging circuit for mains or battery operated electronic equipment |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE813802A (en) |
CH (1) | CH562526A5 (en) |
DE (1) | DE2325890C2 (en) |
DK (1) | DK136925C (en) |
FR (1) | FR2231142B1 (en) |
GB (1) | GB1453996A (en) |
NL (1) | NL7404825A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200804A (en) * | 1987-01-28 | 1988-08-10 | Combined Optical Ind Ltd | Alternative electrical power source system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3010304C2 (en) * | 1980-03-18 | 1982-06-24 | Prontor-Werk Alfred Gauthier Gmbh, 7547 Wildbad | Device with built-in voltage source |
DE3889669T2 (en) * | 1988-12-28 | 1994-09-01 | Bosch Gmbh Robert | TWO LEVEL OUTPUT CIRCUIT. |
-
1973
- 1973-05-22 DE DE19732325890 patent/DE2325890C2/en not_active Expired
-
1974
- 1974-04-09 NL NL7404825A patent/NL7404825A/xx unknown
- 1974-04-16 BE BE7000510A patent/BE813802A/en unknown
- 1974-04-18 GB GB1694274A patent/GB1453996A/en not_active Expired
- 1974-05-10 CH CH639974A patent/CH562526A5/xx not_active IP Right Cessation
- 1974-05-21 DK DK276474A patent/DK136925C/en active
- 1974-05-22 FR FR7417992A patent/FR2231142B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200804A (en) * | 1987-01-28 | 1988-08-10 | Combined Optical Ind Ltd | Alternative electrical power source system |
Also Published As
Publication number | Publication date |
---|---|
DE2325890C2 (en) | 1975-04-10 |
DE2325890B1 (en) | 1974-08-08 |
CH562526A5 (en) | 1975-05-30 |
FR2231142A1 (en) | 1974-12-20 |
FR2231142B1 (en) | 1979-03-09 |
BE813802A (en) | 1974-08-16 |
DK136925C (en) | 1978-05-22 |
DK136925B (en) | 1977-12-12 |
NL7404825A (en) | 1974-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |