GB1169711A - Improvements relating to the Measurement of Resistivity - Google Patents
Improvements relating to the Measurement of ResistivityInfo
- Publication number
- GB1169711A GB1169711A GB2115066A GB2115066A GB1169711A GB 1169711 A GB1169711 A GB 1169711A GB 2115066 A GB2115066 A GB 2115066A GB 2115066 A GB2115066 A GB 2115066A GB 1169711 A GB1169711 A GB 1169711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- probes
- current
- pulse
- resistivity
- 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
- 238000005259 measurement Methods 0.000 title 1
- 239000000523 sample Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 2
- 239000004065 semiconductor Substances 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
Classifications
-
- 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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
1,169,711. Measuring resistivity. SOUTH LONDON ELECTRICAL EQUIPMENT CO. Ltd. May 12, 1967 [May 12, 1966], No.21150/66. Heading G1U. In measuring resistivity, e.g. of a semiconductor material f, current pulses are passed through the material via probes i and the voltage between two other probes d is converted into a reading of resistivity in a digital voltmeter c. The leading edge of each pulse in a pulse train 2 supplied by a pulse generator a triggers a second pulse generator g which produces pulses longer than the pulses 2 but shorter than the recurrence period thereof, and the output pulses of the generator g cause a unit h to deliver pulses of stabilized constant current of the same duration to the probes i. The stabilized current is produced by a comparator circuit l which equalizes the current across a precision resistor m and a stabilized voltage V derived from a potential divider j and a Zener diode. The voltmeter c is respectively triggered and reset by the leading and trailing edges of the pulses in a pulse train 1, this being the inverse of train 2, and averages out the voltages across the probes d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2115066A GB1169711A (en) | 1966-05-12 | 1966-05-12 | Improvements relating to the Measurement of Resistivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2115066A GB1169711A (en) | 1966-05-12 | 1966-05-12 | Improvements relating to the Measurement of Resistivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1169711A true GB1169711A (en) | 1969-11-05 |
Family
ID=10158043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2115066A Expired GB1169711A (en) | 1966-05-12 | 1966-05-12 | Improvements relating to the Measurement of Resistivity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1169711A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816812A (en) * | 1973-04-19 | 1974-06-11 | G Alber | Portable apparatus for measuring load resistance |
| FR2417779A1 (en) * | 1978-02-21 | 1979-09-14 | Teradyne Inc | ELECTRICAL WIRING PLATE ANALYSIS DEVICE INTENDED TO IDENTIFY A FAULTY INTEGRATED CIRCUIT |
| US4178543A (en) * | 1978-02-23 | 1979-12-11 | Teradyne, Inc. | Analyzing electrical circuit boards |
| GB2215064A (en) * | 1988-01-30 | 1989-09-13 | Gen Electric Co Plc | Testing printed circuit boards |
| US4887025A (en) * | 1987-01-09 | 1989-12-12 | Fiat Auto S.P.A. | Method and apparatus for the non-destructive checking of spot welds between metal sheets produced by electric welding |
| US5115200A (en) * | 1984-10-22 | 1992-05-19 | Societe Nationale Industrielle Aerospatiale | Method and apparatus for testing the impedance of two electrically conducting members using two pairs of electrodes in which the spacing of the pairs is adjustable and the electrodes are independently axially slidable |
-
1966
- 1966-05-12 GB GB2115066A patent/GB1169711A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816812A (en) * | 1973-04-19 | 1974-06-11 | G Alber | Portable apparatus for measuring load resistance |
| FR2417779A1 (en) * | 1978-02-21 | 1979-09-14 | Teradyne Inc | ELECTRICAL WIRING PLATE ANALYSIS DEVICE INTENDED TO IDENTIFY A FAULTY INTEGRATED CIRCUIT |
| US4179652A (en) * | 1978-02-21 | 1979-12-18 | Teradyne, Inc. | Analyzing electrical circuit boards |
| US4178543A (en) * | 1978-02-23 | 1979-12-11 | Teradyne, Inc. | Analyzing electrical circuit boards |
| US5115200A (en) * | 1984-10-22 | 1992-05-19 | Societe Nationale Industrielle Aerospatiale | Method and apparatus for testing the impedance of two electrically conducting members using two pairs of electrodes in which the spacing of the pairs is adjustable and the electrodes are independently axially slidable |
| US4887025A (en) * | 1987-01-09 | 1989-12-12 | Fiat Auto S.P.A. | Method and apparatus for the non-destructive checking of spot welds between metal sheets produced by electric welding |
| GB2215064A (en) * | 1988-01-30 | 1989-09-13 | Gen Electric Co Plc | Testing printed circuit boards |
| GB2215064B (en) * | 1988-01-30 | 1992-06-10 | Gen Electric Co Plc | Testing printed circuit boards |
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