GB1258176A - - Google Patents

Info

Publication number
GB1258176A
GB1258176A GB1258176DA GB1258176A GB 1258176 A GB1258176 A GB 1258176A GB 1258176D A GB1258176D A GB 1258176DA GB 1258176 A GB1258176 A GB 1258176A
Authority
GB
United Kingdom
Prior art keywords
input terminals
output
resistor
balanced
differential amplifier
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
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 filed Critical
Publication of GB1258176A publication Critical patent/GB1258176A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/08—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of piezoelectric devices, i.e. electric circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/70—Charge amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

1,258,176. Amplifying arrangements. VIBROMETER A.G. 9 Dec., 1969 [9 Dec., 1968; 13 Nov., 1969], No. 59947/69. Heading H3T. [Also in Division G1] A circuit for transmitting and amplifying the output signal of a piezo-electric sensor G, Fig. 1, which has a balanced output and is screened by a housing A from which an insulated and screened balanced lead SL extends, comprises an amplifier circuit V which is electrically insulated from earth and has two input terminals 3, 4 to which the signal leads are connected and also two output terminals 5, 6 to which the input terminals 7, 8 of a differential amplifier DV are connected, the differential amplifier- DV converting the difference between the signals applied to its input terminals to an asymmetrical voltage between its output terminal H and earth E. In the embodiment of Fig. 2 the amplifier circuit V is provided with negative feedback between corresponding output and input terminals, by means or capacitors C G and obtains a power supply from the voltage drop across a Zener diode Z: diode Z is connected between positive and negative supply terminals by means of field-effect transistor T whose gate is connected to the source electrode, and resistor R5. Differential amplifier DV is fed with signal via series resistors R1, R3, a negative feedback path being provided by resistor R2 and balancing potentiometer P, the arrangement being balanced by resistor R3. In a further embodiment, the amplifier circuit V comprises a pair of unbalanced amplifiers (Fig. 3, not shown).
GB1258176D 1968-12-09 1969-12-09 Expired GB1258176A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU1198368 1968-12-09
AU1063669 1969-11-13

Publications (1)

Publication Number Publication Date
GB1258176A true GB1258176A (en) 1971-12-22

Family

ID=25614255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1258176D Expired GB1258176A (en) 1968-12-09 1969-12-09

Country Status (1)

Country Link
GB (1) GB1258176A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374870A2 (en) * 1988-12-23 1990-06-27 Mitsubishi Denki Kabushiki Kaisha Acceleration sensor
DE4016690A1 (en) * 1989-05-24 1990-11-29 Mitsubishi Electric Corp ACCELERATOR
JP2017096886A (en) * 2015-11-27 2017-06-01 シチズンファインデバイス株式会社 Piezoelectric sensor
US10254894B2 (en) 2015-12-23 2019-04-09 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10282046B2 (en) 2015-12-23 2019-05-07 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10310659B2 (en) 2014-12-23 2019-06-04 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10318038B2 (en) 2014-12-23 2019-06-11 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10496210B2 (en) 2012-04-07 2019-12-03 Cambridge Touch Technologies Ltd. Pressure sensing display device
US10817116B2 (en) 2017-08-08 2020-10-27 Cambridge Touch Technologies Ltd. Device for processing signals from a pressure-sensing touch panel
US11093088B2 (en) 2017-08-08 2021-08-17 Cambridge Touch Technologies Ltd. Device for processing signals from a pressure-sensing touch panel

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374870A2 (en) * 1988-12-23 1990-06-27 Mitsubishi Denki Kabushiki Kaisha Acceleration sensor
EP0374870A3 (en) * 1988-12-23 1990-08-22 Mitsubishi Denki Kabushiki Kaisha Acceleration sensor
US5095751A (en) * 1988-12-23 1992-03-17 Mitsubishi Denki K.K. Acceleration sensor
DE4016690A1 (en) * 1989-05-24 1990-11-29 Mitsubishi Electric Corp ACCELERATOR
US10496210B2 (en) 2012-04-07 2019-12-03 Cambridge Touch Technologies Ltd. Pressure sensing display device
US10310659B2 (en) 2014-12-23 2019-06-04 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10318038B2 (en) 2014-12-23 2019-06-11 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
JP2017096886A (en) * 2015-11-27 2017-06-01 シチズンファインデバイス株式会社 Piezoelectric sensor
US10254894B2 (en) 2015-12-23 2019-04-09 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10282046B2 (en) 2015-12-23 2019-05-07 Cambridge Touch Technologies Ltd. Pressure-sensitive touch panel
US10817116B2 (en) 2017-08-08 2020-10-27 Cambridge Touch Technologies Ltd. Device for processing signals from a pressure-sensing touch panel
US11093088B2 (en) 2017-08-08 2021-08-17 Cambridge Touch Technologies Ltd. Device for processing signals from a pressure-sensing touch panel

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Legal Events

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