GB1129271A - Improvements in circuits incorporating saturable reactors - Google Patents
Improvements in circuits incorporating saturable reactorsInfo
- Publication number
- GB1129271A GB1129271A GB65/66A GB6566A GB1129271A GB 1129271 A GB1129271 A GB 1129271A GB 65/66 A GB65/66 A GB 65/66A GB 6566 A GB6566 A GB 6566A GB 1129271 A GB1129271 A GB 1129271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- reactors
- voltage
- short
- zero
- 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
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F9/00—Magnetic amplifiers
- H03F9/02—Magnetic amplifiers current-controlled, i.e. the load current flowing in both directions through a main coil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1881—Wiring diagrams for power supply, control or testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/08—Operation of gates; Combined operation of gates and signals
- B61L29/18—Operation by approaching rail vehicle or rail vehicle train
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
- B61L29/288—Wiring diagram of the signal control circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F9/00—Magnetic amplifiers
- H03F9/04—Magnetic amplifiers voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
Abstract
1,129,271. Controlled non-linear inductors. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. 3 Jan., 1966 [12 Jan., 1965], No. 65/66. Heading H3B. [Also in Division H2] In a circuit incorporating a D.C. controlled saturable reactor 1, 2 for controlling an A.C. supply, 6, to a load 5, short-circuits in the A.C. windings 3, 4 of the reactor are detected by monitoring the A.C. voltage across two auxiliary windings 10, 11 which falls to a low value when a short occurs. In Fig. 2 two saturable reactors each of the type shown in Fig. 1 are used for controlling the barrier at an automatic level crossing. The D.C. motor 13 for raising the barrier is supplied from A.C. line 14 through rectifier bridge 15 and reactors 16, 17. The auxiliary windings 10, 11 of the respective reactors are connected to two control windings of a magnetic logic element 19. When the flux in the toroid from the control windings is zero a voltage is induced in the secondary winding 21 when the primary winding of the toroid is energized from line 20. If a short-circuit is produced between the turns of one of the reactors, the resultant flux induced in the toroid is no longer zero due to a difference in voltages appearing across the two sets of auxiliary windings 10, 11, i.e. the voltage across the short-circuited reactor's windings 10, 11 falls to a low value. Logic element 19 becomes saturated and the voltage in the secondary winding 21 is reduced to zero resulting in the blocking of the level crossing release drive and the switching of the D.C. control current of the reactors to zero to cut off the supply to motor 13 to keep the barrier closed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE7595 | 1965-01-12 | ||
| BE658170A BE658170A (en) | 1965-01-12 | 1965-01-12 | Saturable reactors for safety circuits and circuits fitted with these reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1129271A true GB1129271A (en) | 1968-10-02 |
Family
ID=74667827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB65/66A Expired GB1129271A (en) | 1965-01-12 | 1966-01-03 | Improvements in circuits incorporating saturable reactors |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3389330A (en) |
| BE (1) | BE658170A (en) |
| CA (1) | CA804730A (en) |
| CH (1) | CH455928A (en) |
| DE (1) | DE1275140B (en) |
| ES (1) | ES361243A3 (en) |
| FR (1) | FR1463379A (en) |
| GB (1) | GB1129271A (en) |
| IN (1) | IN103333B (en) |
| IT (1) | IT778732B (en) |
| NL (1) | NL143860B (en) |
| ZA (1) | ZA6634B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387306A (en) * | 1981-06-22 | 1983-06-07 | General Signal Corporation | Vital contact checking circuit |
| US4600872A (en) * | 1982-07-06 | 1986-07-15 | Shepard Jr Francis H | Apparatus for variable speed drive of an induction motor from a fixed frequency AC source |
| EP0238516A1 (en) * | 1985-09-13 | 1987-09-30 | Hasler AG | Electric power converter |
| FR2633071B1 (en) * | 1988-06-16 | 1990-09-21 | Alsthom | STATUS VALIDATION DEVICE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE718555C (en) * | 1932-07-16 | 1944-12-01 | Siemens Ag | Device for contactless regulation of an alternating voltage |
| US2725519A (en) * | 1952-03-31 | 1955-11-29 | Westinghouse Electric Corp | Magnetic amplifier electrical position control system |
| US3064181A (en) * | 1956-09-04 | 1962-11-13 | Bell Telephone Labor Inc | Magnetic amplifier |
| US3270198A (en) * | 1963-03-28 | 1966-08-30 | Gen Signal Corp | Highway crossing systems |
-
0
- CA CA804730A patent/CA804730A/en not_active Expired
-
1965
- 1965-01-12 BE BE658170A patent/BE658170A/en unknown
- 1965-12-17 US US514558A patent/US3389330A/en not_active Expired - Lifetime
-
1966
- 1966-01-03 GB GB65/66A patent/GB1129271A/en not_active Expired
- 1966-01-03 ZA ZA660034A patent/ZA6634B/en unknown
- 1966-01-05 IN IN103333A patent/IN103333B/en unknown
- 1966-01-10 IT IT41766A patent/IT778732B/en active
- 1966-01-10 CH CH24466A patent/CH455928A/en unknown
- 1966-01-11 DE DEA51282A patent/DE1275140B/en not_active Withdrawn
- 1966-01-11 FR FR45421A patent/FR1463379A/en not_active Expired
- 1966-01-11 NL NL666600314A patent/NL143860B/en not_active IP Right Cessation
-
1968
- 1968-12-09 ES ES361243A patent/ES361243A3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES361243A3 (en) | 1970-08-16 |
| NL143860B (en) | 1974-11-15 |
| FR1463379A (en) | 1966-12-23 |
| IN103333B (en) | 1967-09-04 |
| IT778732B (en) | 1967-07-15 |
| US3389330A (en) | 1968-06-18 |
| CH455928A (en) | 1968-05-15 |
| DE1275140B (en) | 1968-08-14 |
| ZA6634B (en) | 1966-11-16 |
| NL6600314A (en) | 1966-07-13 |
| CA804730A (en) | 1969-01-21 |
| BE658170A (en) | 1965-07-12 |
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