GB897505A - Improvements in or relating to electrical apparatus for determining the frequency response characteristic of an electrical component, circuit or system - Google Patents
Improvements in or relating to electrical apparatus for determining the frequency response characteristic of an electrical component, circuit or systemInfo
- Publication number
- GB897505A GB897505A GB36642/59A GB3664259A GB897505A GB 897505 A GB897505 A GB 897505A GB 36642/59 A GB36642/59 A GB 36642/59A GB 3664259 A GB3664259 A GB 3664259A GB 897505 A GB897505 A GB 897505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- degree
- potentiometers
- phase
- cos
- under test
- 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
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
897,505. Measuring frequency response. DE HAVILLAND AIRCRAFT CO. Jan. 30, 1961 [Oct. 28, 1959], No. 36642/59. Class 40(5). A four-phase oscillator feeds the 0 degree phase A cos #t to a component or system under test. The 0 degree and 180 degree phases are fed to a motor-driven potentiometer system 2 and the 90 degree and 270 degree phases to a similar system 3. The real and imaginary components B cos #t and C sin #t are compared with corresponding outputs X cos #t arid Y sin #t derived from the potentiometers 22 and the differences fed through phase-sensitive detectors 4, 5, comprising transistor 10, 11, switched by the appropriate oscillator phases, the outputs being fed back to the motors 24 to adjust the potentiometers 22 such that X = B and Y = C. D.C. potentiometers 23, linked to the potentiometers 22 provide outputs X, Y, indicating the properties of the component under test. A suitable four-phase oscillator is described (Fig. 7, not shown). Additional subsidiary circuits (Figs. 5 or 6, not shown) may be used when the output from the component under test includes harmonics of the test frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB36642/59A GB897505A (en) | 1959-10-28 | 1959-10-28 | Improvements in or relating to electrical apparatus for determining the frequency response characteristic of an electrical component, circuit or system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB36642/59A GB897505A (en) | 1959-10-28 | 1959-10-28 | Improvements in or relating to electrical apparatus for determining the frequency response characteristic of an electrical component, circuit or system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB897505A true GB897505A (en) | 1962-05-30 |
Family
ID=10389957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36642/59A Expired GB897505A (en) | 1959-10-28 | 1959-10-28 | Improvements in or relating to electrical apparatus for determining the frequency response characteristic of an electrical component, circuit or system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB897505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2217700A1 (en) * | 1972-10-04 | 1974-09-06 | Person Jean Michel |
-
1959
- 1959-10-28 GB GB36642/59A patent/GB897505A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2217700A1 (en) * | 1972-10-04 | 1974-09-06 | Person Jean Michel |
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