GB1115588A - Circuit for automatically adjusting a load to different dc supply voltages - Google Patents
Circuit for automatically adjusting a load to different dc supply voltagesInfo
- Publication number
- GB1115588A GB1115588A GB5410866A GB5410866A GB1115588A GB 1115588 A GB1115588 A GB 1115588A GB 5410866 A GB5410866 A GB 5410866A GB 5410866 A GB5410866 A GB 5410866A GB 1115588 A GB1115588 A GB 1115588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- load
- circuit
- resistor
- supply voltages
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
- H02H11/007—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage involving automatic switching for adapting the protected apparatus to the supply voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P4/00—Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Control Of Direct Current Motors (AREA)
- Electronic Switches (AREA)
Abstract
1,115,588. Two or more saurees; control of electric motors. ITT INDUSTRIES Inc. 2 Dec., 1966 [6 Dec., 1965], No. 54108/66. Headings H2H and H2J. A load M such as a motor is energizable from one of two voltages through a resistor R v which is normally shunted by a transistor T s . When the higher voltage is applied to the circuit, a Zener diode Z breaks down, rendering a transistor T T conductive which cuts off transistor T s hence unshunting the resistor R v . Where the applied voltage changes gradually, e.g. when fed from a battery, a sharp transistion is effected by an optional resistor R R . The switching transistor T s may be replaced by a cascade arrangement of transistors, e.g. a Darlington pair. The arrangement may be adapted for more than two supply voltages.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEJ0029523 | 1965-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1115588A true GB1115588A (en) | 1968-05-29 |
Family
ID=7203628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5410866A Expired GB1115588A (en) | 1965-12-06 | 1966-12-02 | Circuit for automatically adjusting a load to different dc supply voltages |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE690745A (en) |
| DE (1) | DE1513214B2 (en) |
| GB (1) | GB1115588A (en) |
| NL (1) | NL6617158A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496941A (en) * | 1982-01-07 | 1985-01-29 | Restbury Limited | Switch protection device |
| GB2181311A (en) * | 1985-10-02 | 1987-04-15 | Sanyo Electric Co | Dual voltage electric heating apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE36775T1 (en) * | 1984-05-29 | 1988-09-15 | Siemens Ag | ARRANGEMENT FOR EXCITATION OF RELAYS. |
-
1965
- 1965-12-06 DE DE19651513214 patent/DE1513214B2/en active Pending
-
1966
- 1966-12-02 GB GB5410866A patent/GB1115588A/en not_active Expired
- 1966-12-06 BE BE690745D patent/BE690745A/xx unknown
- 1966-12-06 NL NL6617158A patent/NL6617158A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496941A (en) * | 1982-01-07 | 1985-01-29 | Restbury Limited | Switch protection device |
| GB2181311A (en) * | 1985-10-02 | 1987-04-15 | Sanyo Electric Co | Dual voltage electric heating apparatus |
| GB2181311B (en) * | 1985-10-02 | 1989-09-27 | Sanyo Electric Co | Electric heating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1513214B2 (en) | 1970-10-15 |
| NL6617158A (en) | 1967-06-07 |
| DE1513214A1 (en) | 1969-07-03 |
| BE690745A (en) | 1967-06-06 |
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