AT196759B - Schaltungsanordnung für Alarmgeräte nach Art von Kapazitätsrelais mit einem auf einem Kennlinienknick arbeitenden Oszillator - Google Patents

Schaltungsanordnung für Alarmgeräte nach Art von Kapazitätsrelais mit einem auf einem Kennlinienknick arbeitenden Oszillator

Info

Publication number
AT196759B
AT196759B AT196759DA AT196759B AT 196759 B AT196759 B AT 196759B AT 196759D A AT196759D A AT 196759DA AT 196759 B AT196759 B AT 196759B
Authority
AT
Austria
Prior art keywords
relays
capacitance
manner
circuit arrangement
alarm devices
Prior art date
Application number
Other languages
English (en)
Inventor
Josef Ing Paar
Original Assignee
Josef Ing Paar
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 Josef Ing Paar filed Critical Josef Ing Paar
Application granted granted Critical
Publication of AT196759B publication Critical patent/AT196759B/de

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
    • H03K17/955—Proximity switches using a capacitive detector
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Amplifiers (AREA)
AT196759D 1954-12-09 1955-08-29 Schaltungsanordnung für Alarmgeräte nach Art von Kapazitätsrelais mit einem auf einem Kennlinienknick arbeitenden Oszillator AT196759B (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE196759X 1954-12-09
DE1136663X 1954-12-09
DEP13166A DE962818C (de) 1954-12-09 1954-12-10 Schwingtransistor-Impedanzbrueckenanordnung

Publications (1)

Publication Number Publication Date
AT196759B true AT196759B (de) 1958-03-25

Family

ID=68290580

Family Applications (1)

Application Number Title Priority Date Filing Date
AT196759D AT196759B (de) 1954-12-09 1955-08-29 Schaltungsanordnung für Alarmgeräte nach Art von Kapazitätsrelais mit einem auf einem Kennlinienknick arbeitenden Oszillator

Country Status (3)

Country Link
AT (1) AT196759B (de)
DE (1) DE962818C (de)
FR (1) FR1136663A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1175124B (de) * 1961-03-06 1964-07-30 Siemens Ag Elektrische Raumschutzanlage
DE1220289B (de) * 1961-02-10 1966-06-30 Siemens Ag Empfangsschaltung fuer auf rasche Zustandsaenderungen, vorzugsweise Kapazitaets-aenderungen, ansprechende Alarmeinrichtungen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070126A3 (de) * 1981-07-01 1984-04-04 Seltrust Engineering Limited Personennäherungssensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653282A (en) * 1952-06-28 1953-09-22 Foxboro Co Electric motor follow-up system for measuring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220289B (de) * 1961-02-10 1966-06-30 Siemens Ag Empfangsschaltung fuer auf rasche Zustandsaenderungen, vorzugsweise Kapazitaets-aenderungen, ansprechende Alarmeinrichtungen
DE1175124B (de) * 1961-03-06 1964-07-30 Siemens Ag Elektrische Raumschutzanlage

Also Published As

Publication number Publication date
DE962818C (de) 1957-05-23
FR1136663A (fr) 1957-05-16

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