FR2394208A1 - Circuit de reglage de polarisation et de sensibilite pour transducteur - Google Patents
Circuit de reglage de polarisation et de sensibilite pour transducteurInfo
- Publication number
- FR2394208A1 FR2394208A1 FR787816888A FR7816888A FR2394208A1 FR 2394208 A1 FR2394208 A1 FR 2394208A1 FR 787816888 A FR787816888 A FR 787816888A FR 7816888 A FR7816888 A FR 7816888A FR 2394208 A1 FR2394208 A1 FR 2394208A1
- Authority
- FR
- France
- Prior art keywords
- transducer
- adjustment circuit
- sensitivity adjustment
- current
- polarization
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/06—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for operation by a null method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
L'invention concerne le traitement des signaux de sortie de transducteurs. Un circuit de réglage de polarisation et de sensibilité pour un transducteur 16 comprend notamment un amplificateur opérationnel 18 et un transistor à effet de champ 24. Grâce à l'impédance élevée de la grille du transistor 24, le courant qui circule dans la résistance de charge RL est exactement égal à la somme du courant Is qui provient du transducteur, et du courant IB qui traverse la résistance de polarisation RB . Application aux accéléromètres.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/804,419 US4125789A (en) | 1977-06-07 | 1977-06-07 | Biasing and scaling circuit for transducers |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2394208A1 true FR2394208A1 (fr) | 1979-01-05 |
FR2394208B1 FR2394208B1 (fr) | 1982-07-30 |
Family
ID=25188932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR787816888A Granted FR2394208A1 (fr) | 1977-06-07 | 1978-06-06 | Circuit de reglage de polarisation et de sensibilite pour transducteur |
Country Status (9)
Country | Link |
---|---|
US (1) | US4125789A (fr) |
JP (1) | JPS544159A (fr) |
CA (1) | CA1093164A (fr) |
DE (1) | DE2821938C3 (fr) |
FR (1) | FR2394208A1 (fr) |
GB (1) | GB1576668A (fr) |
IT (1) | IT1105358B (fr) |
SE (1) | SE431702B (fr) |
SU (1) | SU854282A3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0126867A2 (fr) * | 1983-04-02 | 1984-12-05 | Robert Bosch Gmbh | Dispositif pour le réglage dans la position zéro des sources de signaux, en particulier des capteurs |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53105334A (en) * | 1977-02-25 | 1978-09-13 | Nippon Soken | Nonnlinear calculating circuit |
US4257064A (en) * | 1980-02-19 | 1981-03-17 | Hughes Aircraft Company | Wideband linear video contrast control |
US4598251A (en) * | 1982-06-16 | 1986-07-01 | Rosemount Inc. | Frequency to current converter circuit |
DE3382176D1 (de) * | 1982-06-16 | 1991-04-04 | Rosemount Inc | Umwandlungsschaltung von frequenz nach strom. |
US4558239A (en) * | 1983-08-17 | 1985-12-10 | At&T Bell Laboratories | High impedance amplifier for an IC chip |
US4593213A (en) * | 1984-05-25 | 1986-06-03 | United Technologies Corporation | Current-limited MOSFET switch |
JPH0410149Y2 (fr) * | 1984-10-18 | 1992-03-12 | ||
JPH0191179U (fr) * | 1987-12-09 | 1989-06-15 | ||
US5012140A (en) * | 1990-03-19 | 1991-04-30 | Tektronix, Inc. | Logarithmic amplifier with gain control |
JP2867756B2 (ja) * | 1991-08-30 | 1999-03-10 | 日本電気株式会社 | 消費電力制御装置 |
FI99171C (fi) * | 1991-09-12 | 1997-10-10 | Nokia Mobile Phones Ltd | Kytkentä RSSI-signaalin lähtöjännitteen skaalaukseen |
US5438288A (en) * | 1993-05-28 | 1995-08-01 | National Semiconductor Corporation | High differential output impedance setter |
US9458450B2 (en) | 2012-03-15 | 2016-10-04 | Flodesign Sonics, Inc. | Acoustophoretic separation technology using multi-dimensional standing waves |
US9950282B2 (en) * | 2012-03-15 | 2018-04-24 | Flodesign Sonics, Inc. | Electronic configuration and control for acoustic standing wave generation |
US10704021B2 (en) | 2012-03-15 | 2020-07-07 | Flodesign Sonics, Inc. | Acoustic perfusion devices |
JP6286925B2 (ja) * | 2013-08-19 | 2018-03-07 | ヤマハ株式会社 | オーディオ信号処理装置 |
EP3092049A1 (fr) | 2014-01-08 | 2016-11-16 | Flodesign Sonics Inc. | Dispositif d'acoustophorèse avec double chambre acoustophorétique |
US11021699B2 (en) | 2015-04-29 | 2021-06-01 | FioDesign Sonics, Inc. | Separation using angled acoustic waves |
US11377651B2 (en) | 2016-10-19 | 2022-07-05 | Flodesign Sonics, Inc. | Cell therapy processes utilizing acoustophoresis |
US11708572B2 (en) | 2015-04-29 | 2023-07-25 | Flodesign Sonics, Inc. | Acoustic cell separation techniques and processes |
US11474085B2 (en) | 2015-07-28 | 2022-10-18 | Flodesign Sonics, Inc. | Expanded bed affinity selection |
US11459540B2 (en) | 2015-07-28 | 2022-10-04 | Flodesign Sonics, Inc. | Expanded bed affinity selection |
US11214789B2 (en) | 2016-05-03 | 2022-01-04 | Flodesign Sonics, Inc. | Concentration and washing of particles with acoustics |
US11085035B2 (en) | 2016-05-03 | 2021-08-10 | Flodesign Sonics, Inc. | Therapeutic cell washing, concentration, and separation utilizing acoustophoresis |
BR112020009889A2 (pt) | 2017-12-14 | 2020-11-03 | Flodesign Sonics, Inc. | acionador e controlador de transdutor acústico |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2174635A5 (fr) * | 1972-03-01 | 1973-10-12 | Auergesellschaft Gmbh | |
US3839648A (en) * | 1972-02-28 | 1974-10-01 | Tektronix Inc | Programmable function generation |
US3870906A (en) * | 1973-06-21 | 1975-03-11 | Us Navy | Ramp/hold circuit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3504267A (en) * | 1968-02-20 | 1970-03-31 | Bendix Corp | Voltage to frequency converter |
US3839647A (en) * | 1973-11-08 | 1974-10-01 | Litton Systems Inc | Transistor linearizer circuit |
-
1977
- 1977-06-07 US US05/804,419 patent/US4125789A/en not_active Expired - Lifetime
-
1978
- 1978-05-19 DE DE2821938A patent/DE2821938C3/de not_active Expired
- 1978-05-23 CA CA303,905A patent/CA1093164A/fr not_active Expired
- 1978-05-26 GB GB23502/78A patent/GB1576668A/en not_active Expired
- 1978-06-02 SE SE7806489A patent/SE431702B/sv not_active IP Right Cessation
- 1978-06-05 IT IT49701/78A patent/IT1105358B/it active
- 1978-06-06 JP JP6735978A patent/JPS544159A/ja active Granted
- 1978-06-06 FR FR787816888A patent/FR2394208A1/fr active Granted
- 1978-06-07 SU SU782628152A patent/SU854282A3/ru active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3839648A (en) * | 1972-02-28 | 1974-10-01 | Tektronix Inc | Programmable function generation |
FR2174635A5 (fr) * | 1972-03-01 | 1973-10-12 | Auergesellschaft Gmbh | |
US3870906A (en) * | 1973-06-21 | 1975-03-11 | Us Navy | Ramp/hold circuit |
Non-Patent Citations (2)
Title |
---|
EXBK/72 * |
EXBK/75 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0126867A2 (fr) * | 1983-04-02 | 1984-12-05 | Robert Bosch Gmbh | Dispositif pour le réglage dans la position zéro des sources de signaux, en particulier des capteurs |
EP0126867A3 (en) * | 1983-04-02 | 1987-10-07 | Robert Bosch Gmbh | Device for zeroing signal sources, especially sensor arrangements |
Also Published As
Publication number | Publication date |
---|---|
US4125789A (en) | 1978-11-14 |
CA1093164A (fr) | 1981-01-06 |
JPS544159A (en) | 1979-01-12 |
SU854282A3 (ru) | 1981-08-07 |
JPS6144360B2 (fr) | 1986-10-02 |
DE2821938A1 (de) | 1978-12-14 |
GB1576668A (en) | 1980-10-15 |
IT7849701A0 (it) | 1978-06-05 |
SE7806489L (sv) | 1978-12-05 |
IT1105358B (it) | 1985-10-28 |
DE2821938B2 (de) | 1980-03-27 |
FR2394208B1 (fr) | 1982-07-30 |
DE2821938C3 (de) | 1980-12-11 |
SE431702B (sv) | 1984-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |