GB654394A - Improvements in methods of and means for comparing or measuring the constants of electric circuit elements - Google Patents
Improvements in methods of and means for comparing or measuring the constants of electric circuit elementsInfo
- Publication number
- GB654394A GB654394A GB34780/47A GB3478047A GB654394A GB 654394 A GB654394 A GB 654394A GB 34780/47 A GB34780/47 A GB 34780/47A GB 3478047 A GB3478047 A GB 3478047A GB 654394 A GB654394 A GB 654394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- inductance
- value
- condenser
- measuring
- 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 Resistance Or Impedance (AREA)
Abstract
654,394. Inductance, capacitance and Q-value measuring. MERCIER, M. A. Dec. 30, 1947, No. 34780. Convention date, Jan. 9, 1942. [Class 37] A variable oscillator feeds a tuned circuit which includes the element to be measured, the output being applied to a detector adapted to indicate the maximum value of output, the tuned circuit comprising a fixed component, an adjusting component and a vernier adjusting component. A. variable oscillator 0 modulated by a tone frequency from H supplies a circuit formed by an unknown inductance Lx in parallel with a condenser C, a variable condenser C1 and a vernier condenser C2, and the oscillator is varied until it supplies oscillations of the frequency to which the circuit Lx, C, C1 and C2 is resonant, as shown by maximum response at T or E; the value of the inductance is then read from the dial of the oscillator M. To measure variations of further inductances, they are each inserted in place of Lx and the oscillator M maintained constant while C2 is varied to produce maximum response, C2 being calibrated to indicate percentage variation. The inductance may be replaced by an unknown condenser, and the condensers by suitable inductances, Fig. 2, not shown. The circuits for measuring inductance or capacity may be connected at will to the oscillators and detector circuits, Fig. 3, not shown. If the power of the oscillator is maintained constant, inductances and capacities of similar value may be tested for their quality, i.e. their resistance, by comparison of the value of the maxima indicated at T or E. The oscillator M preferably has a series of adjacent ranges, Fig. 4, not shown.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR654394X | 1942-01-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB654394A true GB654394A (en) | 1951-06-13 |
Family
ID=9006459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34780/47A Expired GB654394A (en) | 1942-01-09 | 1947-12-30 | Improvements in methods of and means for comparing or measuring the constants of electric circuit elements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB654394A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602711A (en) * | 1992-01-03 | 1997-02-11 | British Nuclear Fuels Plc | Apparatus for monitoring inductance |
-
1947
- 1947-12-30 GB GB34780/47A patent/GB654394A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602711A (en) * | 1992-01-03 | 1997-02-11 | British Nuclear Fuels Plc | Apparatus for monitoring inductance |
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