GB907189A - Improvements in or relating to proximity sensing electric switching devices - Google Patents
Improvements in or relating to proximity sensing electric switching devicesInfo
- Publication number
- GB907189A GB907189A GB500159A GB500159A GB907189A GB 907189 A GB907189 A GB 907189A GB 500159 A GB500159 A GB 500159A GB 500159 A GB500159 A GB 500159A GB 907189 A GB907189 A GB 907189A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferro
- movement
- capacitor
- short
- relating
- 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
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9515—Proximity switches using a magnetic detector using non-linear magnetic devices
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Magnetic Treatment Devices (AREA)
- Electronic Switches (AREA)
Abstract
907,189. Ferro-resonant circuits. BROOKHIRST IGRANIC Ltd. April 13, 1959 [Feb. 13, 1959], No. 5001/59. Class 40 (9). A series ferro-resonant circuit comprising a linear capacitor C and a saturable inductor S is triggered from a low to a high current state by movement of a permanent magnet towards the inductor or by relative movement between the permanent magnet and a magnetic shunt. The direction of movement is reversed to restore the current to its initial value, the extent of movement necessary being reduced by short-circuiting the capacitor through a transistor t. The ferro-resonant circuit may be energized from a 2 kc/s. supply, and a half-wave rectified output derived from the capacitor which is periodically short-circuited by a 50 c/s. supply applied to the transistor base by way of a saturating transformer T. The short-circuiting equipment may be common to a number of ferro-resonant circuits connected to terminals t<SP>2</SP>, t<SP>3</SP>.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB500159A GB907189A (en) | 1959-02-13 | 1959-02-13 | Improvements in or relating to proximity sensing electric switching devices |
FR792119A FR1219949A (en) | 1959-02-13 | 1959-04-15 | Electrical switchgear can be influenced in the vicinity |
BE577722A BE577722A (en) | 1959-02-13 | 1959-04-15 | Proximity sensitive switch or saturation winding. |
DEB52922A DE1119912B (en) | 1959-02-13 | 1959-04-20 | Contactless circuit that can be triggered by mechanical movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB500159A GB907189A (en) | 1959-02-13 | 1959-02-13 | Improvements in or relating to proximity sensing electric switching devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB907189A true GB907189A (en) | 1962-10-03 |
Family
ID=9787860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB500159A Expired GB907189A (en) | 1959-02-13 | 1959-02-13 | Improvements in or relating to proximity sensing electric switching devices |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE577722A (en) |
DE (1) | DE1119912B (en) |
FR (1) | FR1219949A (en) |
GB (1) | GB907189A (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069191B (en) * | 1958-07-15 | 1959-11-19 | WesÜnghousc Electric Corporation, East Pittsburgh, Pa. (V. St. A.) | Contactless switching device with a settable iron core choke |
-
1959
- 1959-02-13 GB GB500159A patent/GB907189A/en not_active Expired
- 1959-04-15 FR FR792119A patent/FR1219949A/en not_active Expired
- 1959-04-15 BE BE577722A patent/BE577722A/en unknown
- 1959-04-20 DE DEB52922A patent/DE1119912B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR1219949A (en) | 1960-05-20 |
BE577722A (en) | 1959-07-31 |
DE1119912B (en) | 1961-12-21 |
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