FR2363238A1 - Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit - Google Patents

Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit

Info

Publication number
FR2363238A1
FR2363238A1 FR7625686A FR7625686A FR2363238A1 FR 2363238 A1 FR2363238 A1 FR 2363238A1 FR 7625686 A FR7625686 A FR 7625686A FR 7625686 A FR7625686 A FR 7625686A FR 2363238 A1 FR2363238 A1 FR 2363238A1
Authority
FR
France
Prior art keywords
push
electrical contacts
cmos integrated
inverter circuit
moving electrical
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
FR7625686A
Other languages
French (fr)
Other versions
FR2363238B1 (en
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to FR7625686A priority Critical patent/FR2363238A1/en
Publication of FR2363238A1 publication Critical patent/FR2363238A1/en
Application granted granted Critical
Publication of FR2363238B1 publication Critical patent/FR2363238B1/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

Abstract

A push-button actuated input is designed for low cost, mass production and avoids the need for moving electrical contacts. The push-button (3) is actuated to apply pressure to a piezo-electric crystal producing a signal over a load resistor (5). The output signal is coupled into a CMOS integrated circuit (6) with protective resistors (7, 9) and diode (10, 11). The circuit operates in an inverter (12) mode and generates an output if a threshold valve is exceeded. The protective diodes and resistors are sized to handle the range of signals generated from the crystal due to different contact pressures.
FR7625686A 1976-08-25 1976-08-25 Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit Granted FR2363238A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7625686A FR2363238A1 (en) 1976-08-25 1976-08-25 Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7625686A FR2363238A1 (en) 1976-08-25 1976-08-25 Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit

Publications (2)

Publication Number Publication Date
FR2363238A1 true FR2363238A1 (en) 1978-03-24
FR2363238B1 FR2363238B1 (en) 1982-01-29

Family

ID=9177127

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625686A Granted FR2363238A1 (en) 1976-08-25 1976-08-25 Push-button type switch without moving electrical contacts - has piezoelectric crystal with CMOS integrated inverter circuit

Country Status (1)

Country Link
FR (1) FR2363238A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247210A1 (en) * 1982-12-21 1984-07-05 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach DEVICE FOR INDICATING THE LOCATION OF A BODY, IN PARTICULAR A PISTON OF A PISTON ACCUMULATOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247210A1 (en) * 1982-12-21 1984-07-05 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach DEVICE FOR INDICATING THE LOCATION OF A BODY, IN PARTICULAR A PISTON OF A PISTON ACCUMULATOR
US4547637A (en) * 1982-12-21 1985-10-15 Gesellschaft Fur Hydraulik-Zubehor Mbh Piston operable switch

Also Published As

Publication number Publication date
FR2363238B1 (en) 1982-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse