GB1011749A - Energization circuits for inductive devices - Google Patents
Energization circuits for inductive devicesInfo
- Publication number
- GB1011749A GB1011749A GB21578/62A GB2157862A GB1011749A GB 1011749 A GB1011749 A GB 1011749A GB 21578/62 A GB21578/62 A GB 21578/62A GB 2157862 A GB2157862 A GB 2157862A GB 1011749 A GB1011749 A GB 1011749A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- current
- inductor
- cut
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/04—Modifications for accelerating switching
- H03K17/041—Modifications for accelerating switching without feedback from the output circuit to the control circuit
- H03K17/04113—Modifications for accelerating switching without feedback from the output circuit to the control circuit in bipolar transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/02—Shaping pulses by amplifying
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/24—Relay circuits using discharge tubes or semiconductor devices
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Nonlinear Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electronic Switches (AREA)
- Amplifiers (AREA)
Abstract
1,011,749. Switching inductive loads. TELETYPE CORPORATION. June 5, 1962 [July 5, 1961], No. 21578/62. Heading H3T. A circuit for energizing an inductor in response to a signal provides a steady potential across the inductor while the current therein is increasing and then holds the current at a steady value when a predetermined magnitude is reached. The invention is described in connection with the selector magnet of a teleprinter which is to be controlled by signals having mark and space periods. In the space period transistor 11 is cut off by the absence of signal on its base, and transistor 15 is thus conducting. Transistor 19 is cut off by the voltage drop across voltage-sensitive resistors 30, 31. Transistor 48 is conducting, while transistor 60 is cut off by the voltage drop across 64. The input circuit of transistor 11 has ohmic resistors 25, 26 and voltage-sensitive resistors 27, 28 which are switchable to cater for different magnitudes and datum levels of the mark signal applied at 23. When a mark signal appears it turns on transistor 11 and cuts off transistor 15 through lead 16, thus reducing the voltage drop across 30. Transistor 19 now conducts and current is able to flow through the inductor 45 via transistors 48 and 19. As soon as this current starts, the base and emitter of transistor 60 go more positive to extents that enable this transistor to conduct; transistor 49 is then cut off since its base potential is maintained first by capacitor 73 and then by clamping diode 74 in conjunction with resistors 71 and 72. Thus the rising current through the inductor is carried by transistor 60 instead of 48. When, however, the emitter of 50 becomes sufficiently positive transistor 48 will conduct again and cut off 60, the inductor current now being through transistor 48 and high resistance 54. The circuit is stabilized during the period of rising inductor current by positive feedback through diode 57 which holds transistor 15 cut off. At the end of the "mark" period, the input signal cuts off transistor 11 and thus turns on transistor 15. The collector voltage of 15 is transferred via diode 65 to the base of transistor 19 and cuts it off (together with diode 55), thus opening the path of current through the inductor. The back E.M.F. across the inductor causes diodes 55 and 66 to conduct and drives the collector of 19 and the base of 15 more negative via diode 57, ensuring that the latter is held conducting. During this changeover period transistor 48 remains conducting and transistor 60 remains cut off. NPN transistors can be used instead of PNP. The voltage-sensitive resistors 27, 28, 30, 31 act as current-limiters for surges and provide a fixed voltage drop; they comprise PN and NP junctions in parallel. Specification 556,700 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US121923A US3205412A (en) | 1961-07-05 | 1961-07-05 | Selector magnet driver |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1011749A true GB1011749A (en) | 1965-12-01 |
Family
ID=22399554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21578/62A Expired GB1011749A (en) | 1961-07-05 | 1962-06-05 | Energization circuits for inductive devices |
Country Status (7)
Country | Link |
---|---|
US (1) | US3205412A (en) |
BE (1) | BE619782A (en) |
CH (1) | CH420253A (en) |
DE (1) | DE1146099B (en) |
GB (1) | GB1011749A (en) |
NL (1) | NL279663A (en) |
SE (1) | SE300835B (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3268776A (en) * | 1962-11-21 | 1966-08-23 | Western Electric Co | Driver for pulsing inductive loads |
US3339120A (en) * | 1963-02-13 | 1967-08-29 | Ncr Co | Electrical drive circuit |
US3466507A (en) * | 1966-06-02 | 1969-09-09 | Friden Inc | Drive circuit |
US3579052A (en) * | 1968-09-21 | 1971-05-18 | Nippon Denso Co | System for driving a. d. c. electromagnet |
BE759189A (en) * | 1969-11-28 | 1971-05-21 | Cit Alcatel | CURRENT CONTROL CIRCUIT IN INDUCTIVE LOAD |
US4012751A (en) * | 1970-05-08 | 1977-03-15 | Prontor-Werk Alfred Gauthier Gmbh | Photographic camera with electromagnetic actuator of the shutter segments |
US3660730A (en) * | 1970-12-16 | 1972-05-02 | Design Elements Inc | Solenoid drive circuit |
US4417201A (en) * | 1971-04-01 | 1983-11-22 | The Bendix Corporation | Control means for controlling the energy provided to the injector valves of an electrically controlled fuel system |
DE2132717A1 (en) * | 1971-07-01 | 1973-01-18 | Bosch Gmbh Robert | ACTUATION CIRCUIT FOR HIGH SWITCHING SPEED SOLENOID VALVES, IN PARTICULAR A HYDRAULIC CONTROL DEVICE |
DE2133704A1 (en) * | 1971-07-07 | 1973-01-25 | Bosch Photokino Gmbh | TRIGGER DEVICE FOR MOVEMENT CAMERAS |
US3791278A (en) * | 1971-07-19 | 1974-02-12 | Polaroid Corp | Photographic apparatus with solenoid powered instrumentalities |
USRE31391E (en) * | 1971-10-04 | 1983-09-20 | Motorola, Inc. | Voltage and current regulator with automatic switchover |
DE2223376C3 (en) * | 1972-05-12 | 1975-01-23 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Protective circuit arrangement for a shadow transistor in the inductive load circuit |
IT1001997B (en) * | 1973-11-28 | 1976-04-30 | PILOTING CIRCUIT FOR PRINTING ELECTROMAGNET | |
US4453652A (en) * | 1981-09-16 | 1984-06-12 | Nordson Corporation | Controlled current solenoid driver circuit |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2452070A (en) * | 1945-01-25 | 1948-10-26 | Raytheon Mfg Co | Resistance welding forging pressure control |
NL208690A (en) * | 1955-07-06 | |||
US3021454A (en) * | 1958-04-11 | 1962-02-13 | Bendix Corp | Control circuit for electromagnetic devices |
US3101441A (en) * | 1958-08-04 | 1963-08-20 | Motorola Inc | Transistor voltage regulator |
US3045150A (en) * | 1958-10-13 | 1962-07-17 | Leach Corp | Time delay circuit |
US3026454A (en) * | 1959-12-01 | 1962-03-20 | Hughes Aircraft Co | Current driving circuit |
US3084310A (en) * | 1959-12-14 | 1963-04-02 | Square D Co | Control circuit |
US3116441A (en) * | 1960-02-19 | 1963-12-31 | Itt | Circuit for maintaining a load energized at decreased power following energization |
US3123746A (en) * | 1961-01-10 | 1964-03-03 | figure |
-
0
- NL NL279663D patent/NL279663A/xx unknown
-
1961
- 1961-07-05 US US121923A patent/US3205412A/en not_active Expired - Lifetime
-
1962
- 1962-06-05 GB GB21578/62A patent/GB1011749A/en not_active Expired
- 1962-07-03 SE SE7409/62A patent/SE300835B/xx unknown
- 1962-07-03 CH CH798762A patent/CH420253A/en unknown
- 1962-07-04 BE BE619782A patent/BE619782A/en unknown
- 1962-07-05 DE DET22414A patent/DE1146099B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CH420253A (en) | 1966-09-15 |
SE300835B (en) | 1968-05-13 |
BE619782A (en) | 1962-11-05 |
DE1146099B (en) | 1963-03-28 |
US3205412A (en) | 1965-09-07 |
NL279663A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1011749A (en) | Energization circuits for inductive devices | |
US2892101A (en) | Transistor time delay circuit | |
GB753014A (en) | Semiconductor electric signal translating devices | |
GB1198134A (en) | Circuit Testing Apparatus | |
US3911353A (en) | Current stabilizing arrangement | |
GB1029765A (en) | Inductor energizing circuit | |
US3050636A (en) | High speed transistor switch | |
US3641407A (en) | Inductor surge protection for transistors | |
US4220877A (en) | Temperature compensated switching circuit | |
US4539492A (en) | Darlington transistor circuit | |
US3153729A (en) | Transistor gating circuits | |
US3217237A (en) | Voltage regulator employing a voltage divider havin gan intermediate point at a reference potential | |
US3235775A (en) | Selector magnet driver | |
US3078393A (en) | Driver for inductive load | |
US3585407A (en) | A complementary transistor switch using a zener diode | |
US3215858A (en) | High speed transistor switching circuit | |
US3192399A (en) | Amplifier-switching circuit employing plurality of conducting devices to share load crrent | |
US3049630A (en) | Transformer-coupled pulse amplifier | |
US2794856A (en) | Transistorized keying and mark-hold unit | |
US3187196A (en) | Trigger circuit including means for establishing a triggered discrimination level | |
US4052660A (en) | Dc series voltage regulator with gating means for output to remain off until regulation level is reached | |
US4096429A (en) | Voltage and current regulator for generating systems | |
US3482134A (en) | Electrical pulse bootstrap circuit | |
US3609398A (en) | High-speed integrated logic circuit | |
US4675548A (en) | Antisaturation circuit for TTL circuits having TTL input and output compatibility |