GB894208A - Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variations - Google Patents
Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variationsInfo
- Publication number
- GB894208A GB894208A GB3376058A GB3376058A GB894208A GB 894208 A GB894208 A GB 894208A GB 3376058 A GB3376058 A GB 3376058A GB 3376058 A GB3376058 A GB 3376058A GB 894208 A GB894208 A GB 894208A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitance
- variations
- variable
- smallcapacitance
- relating
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
894,208. Inclinometers. MARDYKE ELECTRICS Ltd. Oct. 6, 1959 [Oct. 22, 1958], No. 33760/58. Class 40(1). [Also in Group XXXVI] An inclinometer comprises four plates P2 mutually at right-angles, on a base BS surrounding a pendulum P, the variation in capacitance between the pendulum and each of the plates P2 being indicative of the deflection relative to the base, and measured in four capacitance-responsive circuits each comprising a transistor beatfrequency oscillator variable in frequency by the capacitance between P, P2, which supplies a bandpass amplifier whose output is variable in response to the capacitance variations, and is rectified and amplified to operate an indicator. The oscillator may alternatively operate at a fixed frequency, and the band-pass amplifier is tuned by the variable capacitance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3376058A GB894208A (en) | 1958-10-22 | 1958-10-22 | Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3376058A GB894208A (en) | 1958-10-22 | 1958-10-22 | Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variations |
Publications (1)
Publication Number | Publication Date |
---|---|
GB894208A true GB894208A (en) | 1962-04-18 |
Family
ID=10357094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3376058A Expired GB894208A (en) | 1958-10-22 | 1958-10-22 | Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variations |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB894208A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2175397A (en) * | 1983-11-22 | 1986-11-26 | Honda Motor Co Ltd | Devices for detecting objects |
GB2238381A (en) * | 1989-10-17 | 1991-05-29 | Motoda Electronics | Detecting verticality and maintaining level |
FR2698519A1 (en) * | 1992-11-27 | 1994-06-03 | Pioneer France Mais Sa | Grain counting device for seeding in particular. |
-
1958
- 1958-10-22 GB GB3376058A patent/GB894208A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2175397A (en) * | 1983-11-22 | 1986-11-26 | Honda Motor Co Ltd | Devices for detecting objects |
GB2175397B (en) * | 1983-11-22 | 1990-01-17 | Honda Motor Co Ltd | Devices for detecting objects |
GB2238381A (en) * | 1989-10-17 | 1991-05-29 | Motoda Electronics | Detecting verticality and maintaining level |
GB2238381B (en) * | 1989-10-17 | 1994-03-30 | Motoda Electronics | Verticality detection and level maintenance |
FR2698519A1 (en) * | 1992-11-27 | 1994-06-03 | Pioneer France Mais Sa | Grain counting device for seeding in particular. |
WO1994012011A1 (en) * | 1992-11-27 | 1994-06-09 | S.A.R.L. Agrotique | Seed counter device, in particular for sowing machines |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8100725A1 (en) | Device for measuring the relative position of two objects | |
GB1266311A (en) | ||
GB856755A (en) | Improvements in apparatus for reading marks of magnetizable material on records | |
KR850006799A (en) | Signal strength indicator | |
GB894208A (en) | Improvements in or relating to circuit arrangements for measuring or detecting smallcapacitance variations | |
GB1396739A (en) | Proximity switch | |
GB2006442A (en) | Improvements in or Relating to Measuring Low Capacitances | |
US3761803A (en) | Electrostatic field strength measuring apparatus | |
GB969898A (en) | Deviation measuring and computing system | |
SE7901195L (en) | CIRCUIT FOR SATURATION OF THE CAPACITY DIFFERENCE BETWEEN TWO CAPACITORS | |
GB1070081A (en) | Improvements in or relating to apparatus for the direct measurement of capacitance | |
GB1150436A (en) | Oscillator Circuit for the Measurement of Capacitance Differences | |
JPS566117A (en) | Liquid-level detector | |
SU429326A1 (en) | DEVICE FOR MEASURING MOISTURE | |
SU396651A1 (en) | RAN \ NEGATIVE DEVICE FOR GEOELECTRIC EXPLORATION | |
SU122791A1 (en) | Amplitude Modulation Depth Gauge | |
GB639256A (en) | A capacity-balance system for locating or indicating the proximity of conducting bodies | |
JPS57106804A (en) | Measuring device for thickness of film | |
SU402792A1 (en) | Wetness | |
JPS56143978A (en) | Capacity type sensor | |
GB1307527A (en) | Apparatus for determining the coordinates of the centre of an approximately circular form | |
DZIUBENKO et al. | A device for capacitance and angle of losses measurements at ELF | |
GB859061A (en) | Frequency indicator | |
GB859593A (en) | A device for measuring variable mechanical quantities | |
JPS5328465A (en) | Electronic watch |