FR2292242B1 - - Google Patents
Info
- Publication number
- FR2292242B1 FR2292242B1 FR7535599A FR7535599A FR2292242B1 FR 2292242 B1 FR2292242 B1 FR 2292242B1 FR 7535599 A FR7535599 A FR 7535599A FR 7535599 A FR7535599 A FR 7535599A FR 2292242 B1 FR2292242 B1 FR 2292242B1
- Authority
- FR
- France
- 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
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
- G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude
-
- 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
- H03K17/951—Measures for supplying operating voltage to the detector circuit
-
- 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
- H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
- H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
- H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB50629/74A GB1531217A (en) | 1974-11-22 | 1974-11-22 | Proximity switch |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2292242A1 FR2292242A1 (en) | 1976-06-18 |
FR2292242B1 true FR2292242B1 (en) | 1982-07-09 |
Family
ID=10456687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7535599A Granted FR2292242A1 (en) | 1974-11-22 | 1975-11-21 | PROXIMITY CONTACTOR |
Country Status (5)
Country | Link |
---|---|
CA (1) | CA1060115A (en) |
FR (1) | FR2292242A1 (en) |
GB (1) | GB1531217A (en) |
IT (1) | IT1051270B (en) |
ZA (1) | ZA756924B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3041840C2 (en) * | 1980-11-06 | 1989-01-12 | Honeywell Gmbh, 6050 Offenbach | Two-wire feed circuit |
GB2180938B (en) * | 1985-09-24 | 1990-02-28 | Square D Co | Low leakage, a c proximity switch circuit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1924279C3 (en) * | 1969-05-13 | 1975-06-12 | Hans 4330 Muelheim Turck | Two-pole thyristor switching device for AC circuits |
FR2148789A5 (en) * | 1971-08-02 | 1973-03-23 | Crouzet Sa |
-
1974
- 1974-11-22 GB GB50629/74A patent/GB1531217A/en not_active Expired
-
1975
- 1975-11-03 CA CA239,202A patent/CA1060115A/en not_active Expired
- 1975-11-04 ZA ZA00756924A patent/ZA756924B/en unknown
- 1975-11-21 FR FR7535599A patent/FR2292242A1/en active Granted
- 1975-11-21 IT IT69884/75A patent/IT1051270B/en active
Also Published As
Publication number | Publication date |
---|---|
ZA756924B (en) | 1976-10-27 |
IT1051270B (en) | 1981-04-21 |
FR2292242A1 (en) | 1976-06-18 |
CA1060115A (en) | 1979-08-07 |
GB1531217A (en) | 1978-11-08 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |