GB228337A - Improvements relating to frequency meters for electric currents - Google Patents
Improvements relating to frequency meters for electric currentsInfo
- Publication number
- GB228337A GB228337A GB213324A GB213324A GB228337A GB 228337 A GB228337 A GB 228337A GB 213324 A GB213324 A GB 213324A GB 213324 A GB213324 A GB 213324A GB 228337 A GB228337 A GB 228337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- electric currents
- improvements relating
- circuit
- frequency meters
- 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
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
228,337. Cheetham, G. A., and Metropolitan-Vickers Electrical Co., Ltd. Jan. 26,1924. Frequency, measuring.-In an induction meter, having two electromagnets 2, 3 acting in opposition on the movable member and connected respectively through a resistance 6 and inductance 7 to the circuit under test, a condenser 8 is placed in series with the inductance and electromagnet 3. Preferably the condenser has such a value that resonance occurs at a frequency near the normal frequency of the circuit. For instance, the normal frequency of the circuit may be 60 cycles, and the resonance frequency 80 cycles. The instrument thus has a very open space in the region of normal frequency. Specification 16342/10 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB213324A GB228337A (en) | 1924-01-26 | 1924-01-26 | Improvements relating to frequency meters for electric currents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB213324A GB228337A (en) | 1924-01-26 | 1924-01-26 | Improvements relating to frequency meters for electric currents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB228337A true GB228337A (en) | 1925-02-05 |
Family
ID=9734170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB213324A Expired GB228337A (en) | 1924-01-26 | 1924-01-26 | Improvements relating to frequency meters for electric currents |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB228337A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3286160A (en) * | 1962-10-25 | 1966-11-15 | Hitachi Ltd | Frequency bridge |
-
1924
- 1924-01-26 GB GB213324A patent/GB228337A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3286160A (en) * | 1962-10-25 | 1966-11-15 | Hitachi Ltd | Frequency bridge |
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