[go: up one dir, main page]

GB1396739A - Proximity switch - Google Patents

Proximity switch

Info

Publication number
GB1396739A
GB1396739A GB3722372A GB3722372A GB1396739A GB 1396739 A GB1396739 A GB 1396739A GB 3722372 A GB3722372 A GB 3722372A GB 3722372 A GB3722372 A GB 3722372A GB 1396739 A GB1396739 A GB 1396739A
Authority
GB
United Kingdom
Prior art keywords
coils
coil
inductive element
damage
circuit
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
Application number
GB3722372A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1396739A publication Critical patent/GB1396739A/en
Expired legal-status Critical Current

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

Landscapes

  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

1396739 Proximity sensor E HERMLE 9 Aug 1972 [10 Aug 1971] 37223/72 Heading G1N [Also in Division H3] A proximity sensor includes an inductive element with coils 10, 12 and a shallow coil 54 disposed over coils 10, 12 whereby physical damage to coils 10, 12 will also damage coil 54, the coils in a pot-core 14 forming an oscillatory circuit with capacitor 16 and transistor 18, the sensor including at least one supervisory circuit connected with coil 54 which provides a constant output signal provided coil 54, is not broken. A first supervisory circuit, Fig.1a (not shown), is connected between points aa of Fig.1, and provides the signal indicative of damage to the inductive element. In addition other circuits are operative to monitor (1) oscillations of the circuit falling below a prescribed amplitude (2) the supply voltage lying outside prescribed limits (3) the supply D.C. having an A.C. component in excess of a predetermined amplitude. It is stated that the sensor may utilize a capacitive element instead of an inductive element.
GB3722372A 1971-08-10 1972-08-09 Proximity switch Expired GB1396739A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712166021 DE2166021C3 (en) 1971-08-10 1971-08-10 Electronic proximity switch
DE19712140056 DE2140056C3 (en) 1971-08-10 1971-08-10 Contactless controllable proximity switch

Publications (1)

Publication Number Publication Date
GB1396739A true GB1396739A (en) 1975-06-04

Family

ID=25761575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3722372A Expired GB1396739A (en) 1971-08-10 1972-08-09 Proximity switch

Country Status (4)

Country Link
CH (1) CH544455A (en)
DE (2) DE2166021C3 (en)
FR (1) FR2149901A5 (en)
GB (1) GB1396739A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177216A (en) * 1985-07-05 1987-01-14 Baumer Electric Ag Proximity switch
DE4414748A1 (en) * 1994-04-20 1995-10-26 Pepperl & Fuchs Proximity sensor for contactless inductive or capacitive switch
DE19913872A1 (en) * 1999-03-26 2000-10-19 Siemens Ag Sensor with failure monitoring system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4433309A (en) * 1980-03-01 1984-02-21 Gebhard Balluff Fabrik Feinmechanischer Proximity switch with built-in test circuit
DE3110390A1 (en) * 1981-03-18 1982-10-07 Gebhard Balluff, Fabrik Feinmechanischer Erzeugnisse, 7303 Neuhausen TEST AND EVALUATION FOR PROXIMITY SWITCHES IN MACHINE CONTROLS
DE3209673C2 (en) * 1981-09-22 1984-07-05 Robert Ing.(grad.) 7995 Neukirch Buck Circuit arrangement for monitoring a switching device and the external conductors connected to it
DE3220111C1 (en) * 1982-05-28 1983-06-09 Honeywell Gmbh, 6050 Offenbach Monitoring device for proximity switches
DE3311781A1 (en) * 1983-03-31 1984-10-04 Weber Gesellschaft für Hüttenelektronik mbH, 2201 Kollmar Arrangement for checking the operation of inductive proximity switches
DE3914387A1 (en) * 1988-05-03 1989-11-16 Euchner & Co Safety proximity switch
DE4114110C1 (en) * 1991-04-30 1993-01-21 Gerno Soyck Gmbh, 5885 Schalksmuehle, De Inductive proximity sensor monitoring arrangement - has HF frequency generator divided into two oscillators, with evaluation of total current from DC source
DE4242164C2 (en) * 1992-09-30 1995-04-27 Hiss Eckart Safety sensor
DE19716914C1 (en) * 1997-04-23 1998-09-17 Siemens Ag Proximity switch with coil wire break recognition circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177216A (en) * 1985-07-05 1987-01-14 Baumer Electric Ag Proximity switch
GB2177216B (en) * 1985-07-05 1989-07-19 Baumer Electric Ag Proximity switch
DE4414748A1 (en) * 1994-04-20 1995-10-26 Pepperl & Fuchs Proximity sensor for contactless inductive or capacitive switch
DE19913872A1 (en) * 1999-03-26 2000-10-19 Siemens Ag Sensor with failure monitoring system
DE19913872C2 (en) * 1999-03-26 2001-07-12 Siemens Ag Failure monitoring system sensor

Also Published As

Publication number Publication date
FR2149901A5 (en) 1973-03-30
DE2166021B2 (en) 1978-01-05
DE2166021A1 (en) 1973-02-22
DE2166021C3 (en) 1978-09-07
DE2140056C3 (en) 1975-05-07
DE2140056A1 (en) 1973-02-22
DE2140056B2 (en) 1973-08-02
CH544455A (en) 1973-12-28

Similar Documents

Publication Publication Date Title
GB1396739A (en) Proximity switch
GB1127802A (en) Integrated circuit apparatus
ES2006169A6 (en) Circuit for operating a magneto-elastic sensor.
GB999858A (en) An endo-radio-sonde
GB1306207A (en)
SE324416B (en)
JPS6471211A (en) Multifrequency type static capacitance sensor
GB1330715A (en) Electronci oscillators
CH415807A (en) Installation for detecting variations in the capacitance of a capacitive circuit
GB1113864A (en) Method and means for measuring linear or angular displacement
GB1086621A (en) An improved colpitts oscillator
GB1093538A (en) Improvements in or relating to switched frequency oscillators
JPS5348131A (en) Oscillation type contactless igniting device
GB1093164A (en) Improvements in or relating to electric oscillators
IT949966B (en) SEMICONDUCTOR DEVICE FOR THE PRODUCTION OF ELECTRICAL OSCILLATIONS THAT AT HIGH FREQUENCY
GB1331902A (en) Inductive proximity switch
AT312744B (en) Transistor two-point control circuit for an inductive consumer
ES326923A1 (en) Electronic device for the measurement of small displacements. (Machine-translation by Google Translate, not legally binding)
GB1031958A (en) Improvements in or relating to d.c. voltage transformer apparatus
LUCIFREDI Capacitive transducers(Surveys of capacitive transducers and their circuit design)
GB1251417A (en)
GB1070842A (en) Improvements in or relating to high frequency circuit arrangements for capacity transducers
SU448471A1 (en) Converter of non-electrical quantities into electrical signals
GB1054248A (en) Proximity Detector
ZA757223B (en) A circuit arrangement for the evaluation of received oscillations of predetermined frequency

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee