GB520693A - Improvements in or relating to electric measuring and testing apparatus - Google Patents
Improvements in or relating to electric measuring and testing apparatusInfo
- Publication number
- GB520693A GB520693A GB3103238A GB3103238A GB520693A GB 520693 A GB520693 A GB 520693A GB 3103238 A GB3103238 A GB 3103238A GB 3103238 A GB3103238 A GB 3103238A GB 520693 A GB520693 A GB 520693A
- Authority
- GB
- United Kingdom
- Prior art keywords
- volts
- rays
- amps
- light
- prisms
- 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
- 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
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
- G01D15/14—Optical recording elements; Recording elements using X-or nuclear radiation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
520,693. Indicating - apparatus. STANDARD TELEPHONES & CABLES, Ltd., BLACK, D. H., and FREMLIN, J. H. Oct. 27, 1938, No. 31032. [Class 106 (iv] [Also in Group XXXVI] Apparatus for recording the fluctuations of two interrelated variables comprises two mirror galvanometers G<SP>1</SP>, G<SP>2</SP> each having their movement angularly displaceable on a vertical axis, a prismatic system E being disposed in the path of the light rays between the mirrors for rotating the plane of deflection through 90 degrees so that the light spot moves over a recording surface or a scale 1 of rectangular coordinates. Electrostatic instruments can be employed, and the variables may be dependent or independent, and may comprise the relationships volts/volts, volts/amps, amps/amps, temperature/resistance and temperature/volts. In one arrangement for measuring anode current in relation to grid volts, the galvanometers are connected in the respective circuits and the grid bias is manually adjusted to control the light spot. Three prisms are located in the path of the rays between the galvanometer mirrors having their faces arranged so that the rays are turned through 90 degrees and leave the prisms in the same direction as they entered. The measurements of screen current in relation to anode current, and secondary emission, are referred to. The pencil or rays can be in the form of four rectangles and a central circle of light to facilitate reading on a recording surface which may be provided with a template curve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3103238A GB520693A (en) | 1938-10-27 | 1938-10-27 | Improvements in or relating to electric measuring and testing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3103238A GB520693A (en) | 1938-10-27 | 1938-10-27 | Improvements in or relating to electric measuring and testing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB520693A true GB520693A (en) | 1940-05-01 |
Family
ID=10316910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3103238A Expired GB520693A (en) | 1938-10-27 | 1938-10-27 | Improvements in or relating to electric measuring and testing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB520693A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020119A (en) * | 1958-04-17 | 1962-02-06 | Marchal Maurice | Apparatus for recording light spot traces on film |
US3045241A (en) * | 1957-03-18 | 1962-07-17 | Western Geophysical Co | Oscillographic camera |
US3799644A (en) * | 1971-06-09 | 1974-03-26 | G Street | Light-beam steering apparatus |
-
1938
- 1938-10-27 GB GB3103238A patent/GB520693A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3045241A (en) * | 1957-03-18 | 1962-07-17 | Western Geophysical Co | Oscillographic camera |
US3020119A (en) * | 1958-04-17 | 1962-02-06 | Marchal Maurice | Apparatus for recording light spot traces on film |
US3799644A (en) * | 1971-06-09 | 1974-03-26 | G Street | Light-beam steering apparatus |
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