GB972643A - Improvements in or relating to electrical measuring circuit arrangements - Google Patents
Improvements in or relating to electrical measuring circuit arrangementsInfo
- Publication number
- GB972643A GB972643A GB4070761A GB4070761A GB972643A GB 972643 A GB972643 A GB 972643A GB 4070761 A GB4070761 A GB 4070761A GB 4070761 A GB4070761 A GB 4070761A GB 972643 A GB972643 A GB 972643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- peak
- condenser
- passed
- tube
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
- G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/86—Signal analysis
- G01N30/8603—Signal analysis with integration or differentiation
- G01N30/8606—Integration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
- G01R19/0053—Noise discrimination; Analog sampling; Measuring transients
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Algebra (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Electrochemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
972,643. Peak current measurement; integrating current; gas analyzing apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 14, 1961 [Nov.17, 1960], No. 40707/61. Headings G1N, G1Q and G1U. An arrangement for measuring the separate time integrals of current peaks occurring in a circuit having a high resistance includes integrators, to one of which current is supplied during a current peak, and a device for measuring the voltage across the said one integrator. Each integrator consists of one of a series of capacitors which are switched in and out of the circuit successively by a means automatically operated by voltage pulses derived by the differentiation of signals related to the current peaks. The current peaks may be produced by varying the degree of ionisation of a hydrogen flame 3, in which is arranged an electrode 4 energized by a battery 5. One peak charges a condenser 9 through a resistor 6 so that the total amount of current passed in the peak is integrated by the condenser, which integrated value is measured in the device 7. A differentiated pulse is produced from this by a network 16, 17, amplified in the device 18 and used to operate the switch 13 to allow a subsequent current pulse to charge a further condenser 10. The battery 5 may be replaced by a charged large capacity condenser (Fig. 4 not shown). The arrangement may be applied in a method of determining gas compositions, wherein a gas mixture is passed through a chromatographic tube in which differential absorption takes place. This separates the constituents of the gas so that different constituents emerge from the tube at different times, and are passed into the flame 3 through the tube 1, so that its degree of ionisation varies according to the amount of the constituent present.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL258076 | 1960-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB972643A true GB972643A (en) | 1964-10-14 |
Family
ID=19752703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4070761A Expired GB972643A (en) | 1960-11-17 | 1961-11-14 | Improvements in or relating to electrical measuring circuit arrangements |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH399014A (en) |
| GB (1) | GB972643A (en) |
| NL (2) | NL258076A (en) |
-
0
- NL NL129191D patent/NL129191C/xx active
- NL NL258076D patent/NL258076A/xx unknown
-
1961
- 1961-11-14 CH CH1320461A patent/CH399014A/en unknown
- 1961-11-14 GB GB4070761A patent/GB972643A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL258076A (en) | |
| CH399014A (en) | 1966-03-15 |
| NL129191C (en) |
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