FR2455818A1 - Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge - Google Patents

Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge

Info

Publication number
FR2455818A1
FR2455818A1 FR7911360A FR7911360A FR2455818A1 FR 2455818 A1 FR2455818 A1 FR 2455818A1 FR 7911360 A FR7911360 A FR 7911360A FR 7911360 A FR7911360 A FR 7911360A FR 2455818 A1 FR2455818 A1 FR 2455818A1
Authority
FR
France
Prior art keywords
network
amplifier
circuit
esp
parallel complementary
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.)
Granted
Application number
FR7911360A
Other languages
English (en)
Other versions
FR2455818B1 (fr
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
Priority to FR7911360A priority Critical patent/FR2455818A1/fr
Publication of FR2455818A1 publication Critical patent/FR2455818A1/fr
Application granted granted Critical
Publication of FR2455818B1 publication Critical patent/FR2455818B1/fr
Granted 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
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • 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
    • H03K17/96—Touch switches
    • H03K17/964—Piezo-electric touch switches
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element

Abstract

IL S'AGIT D'EXPLOITER LES VARIATIONS DE LA CHARGE ELECTRIQUE INDUITE SUR LES ELECTRODES A ET B D'UN CONDENSATEUR C DE FAIBLE CAPACITE 1PF CONTENANT UN ELECTRET 1, VARIATIONS DUES A UN PARAMETRE EXTERIEUR. ON A RECOURS A UN PREMIER CIRCUIT 2 COMPRENANT DEUX TRANSISTORS A EFFET DE CHAMP 3, 4 DE TYPES DE CONDUCTION DIFFERENTS ET MONTES DE FACON COMPLEMENTAIRE ET L'ON BRANCHE LE CONDENSATEUR C A TRAVERS UNE RESISTANCE R AUX BORNES D'AU MOINS UNE DIODE D ELLE-MEME BRANCHEE ENTRE LE POINT G COMMUN AUX GRILLES DES DEUX TRANSISTORS ET LE POINT COMMUN O DU MONTAGE. APPLICATIONS PREFEREES: TOUCHES DE CLAVIERS, DOSIMETRES D'IRRADIATIONS IONISANTES.
FR7911360A 1979-05-04 1979-05-04 Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge Granted FR2455818A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7911360A FR2455818A1 (fr) 1979-05-04 1979-05-04 Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7911360A FR2455818A1 (fr) 1979-05-04 1979-05-04 Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge

Publications (2)

Publication Number Publication Date
FR2455818A1 true FR2455818A1 (fr) 1980-11-28
FR2455818B1 FR2455818B1 (fr) 1983-05-20

Family

ID=9225080

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911360A Granted FR2455818A1 (fr) 1979-05-04 1979-05-04 Perfectionnements aux dispositifs pour exploiter les variations de charge d'un condensateur de faible capacite contenant un dielectrique charge

Country Status (1)

Country Link
FR (1) FR2455818A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519490A1 (fr) * 1981-12-31 1983-07-08 Thomson Csf Generateurs piezoelectriques d'impulsions electriques
EP0343685A2 (fr) * 1988-05-27 1989-11-29 Makash - Advanced Piezo Technology Interrupteur piezoélectrique
WO2011067089A1 (fr) * 2009-12-04 2011-06-09 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager doté d'un dispositif de commande et procédé de commande d'un appareil ménager

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668698A (en) * 1970-12-17 1972-06-06 Northern Electric Co Capacitive transducer
FR2124518A1 (fr) * 1971-02-04 1972-09-22 Sony Corp
US3823550A (en) * 1972-01-14 1974-07-16 Time Computer Solid state watch display switch
DE2317221A1 (de) * 1973-04-06 1974-10-17 Licentia Gmbh Kontaktloser schalter
US4099074A (en) * 1975-03-06 1978-07-04 Sharp Kabushiki Kaisha Touch sensitive electronic switching circuitry for electronic wristwatches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668698A (en) * 1970-12-17 1972-06-06 Northern Electric Co Capacitive transducer
FR2124518A1 (fr) * 1971-02-04 1972-09-22 Sony Corp
US3823550A (en) * 1972-01-14 1974-07-16 Time Computer Solid state watch display switch
DE2317221A1 (de) * 1973-04-06 1974-10-17 Licentia Gmbh Kontaktloser schalter
US4099074A (en) * 1975-03-06 1978-07-04 Sharp Kabushiki Kaisha Touch sensitive electronic switching circuitry for electronic wristwatches

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519490A1 (fr) * 1981-12-31 1983-07-08 Thomson Csf Generateurs piezoelectriques d'impulsions electriques
EP0083528A1 (fr) * 1981-12-31 1983-07-13 Thomson-Csf Générateurs piézoélectriques d'impulsions électriques
EP0343685A2 (fr) * 1988-05-27 1989-11-29 Makash - Advanced Piezo Technology Interrupteur piezoélectrique
EP0343685A3 (fr) * 1988-05-27 1991-02-06 Makash - Advanced Piezo Technology Interrupteur piezoélectrique
WO2011067089A1 (fr) * 2009-12-04 2011-06-09 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager doté d'un dispositif de commande et procédé de commande d'un appareil ménager

Also Published As

Publication number Publication date
FR2455818B1 (fr) 1983-05-20

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Legal Events

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CL Concession to grant licences
ST Notification of lapse