SU128938A1 - Device for measuring small phase angles of deviation from 90 ° phase shift of two alternating voltages - Google Patents
Device for measuring small phase angles of deviation from 90 ° phase shift of two alternating voltagesInfo
- Publication number
- SU128938A1 SU128938A1 SU634062A SU634062A SU128938A1 SU 128938 A1 SU128938 A1 SU 128938A1 SU 634062 A SU634062 A SU 634062A SU 634062 A SU634062 A SU 634062A SU 128938 A1 SU128938 A1 SU 128938A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phase
- deviation
- alternating voltages
- measuring small
- phase shift
- Prior art date
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
Насто щее изобретение относитс к устройствам дл измерени м лых фазовых углов отклонени от 90 сдвига фаз двух переменных напр жений , основанным на измерении выпр мленной геометрической суммы и разности сравниваемых напр жений по методу компенсации с применением потенциометра посто нного тока.The present invention relates to devices for measuring small phase angles of deviation from 90 phase shifts of two alternating voltages based on measuring the straightened geometric sum and the difference of the compared voltages by the compensation method using a DC potentiometer.
Предлагаемое устройство отличаетс от известных тем, что дл питани цепи рабочего тока потенциометра использовано выпр мленное напр жение, пропорциональное геометрической сумме сравниваемые напр жений.The proposed device differs from the known ones in that the straightened voltage proportional to the geometric sum of the compared voltages is used to power the working current circuit of the potentiometer.
Такое выполнение устройства обеспечивает повышение точности измерени .This embodiment of the device provides improved measurement accuracy.
На чертеже изображена электрическа схема предлагаемого устройства.The drawing shows the electrical circuit of the proposed device.
На исследуемую фазочувствительную схему / подаютс два напр жени , из которых одно подаетс непосредственно от источника пер, менного напр жени 2, а другое - через фазорегул тор 3. Фазорегул тором устанавливаетс такой сдвиг фаз между входными напр жени ми, чтобы выходное напр жение фазочувствительной схемы было равно дулю, что контролируетс гальванометром 4. При этом условии разность фаз входных напр жений будет равна 90 , где и - углова погреи ность фазочувствительной схемы.Two voltages are applied to the phase-sensitive circuit under study /, one of which is supplied directly from alternating current source 2 and the other through phase regulator 3. The phase regulator sets this phase shift between input voltages so that the output voltage of the phase-sensitive circuit was equal to the value that is controlled by the galvanometer 4. Under this condition, the phase difference of the input voltages will be equal to 90, where and is the angular distortion of the phase-sensitive circuit.
Входные напр жени схемы У параллельно через переключатели 5 и 6 поступают на катодные повторители 7 и 5. К выходам последних подключены две образцовые катушки взаимной индуктивности 9 и 10: одна - непосредственно, а друга - через переключатель //. Вторнчные обмотки катушек включены последовательно (дл фазочувствительной схемы синусного типа). Геометрическа сумма напр жений, снимаема со вторичных обмоток катушек индуктивностей 9 и 10, через фильтр нижних частот 12 поступает на выпр митель 13, а затем на вход потенциометра 14 посто нного тока.The input voltages of the Y circuit in parallel through switches 5 and 6 are fed to cathode repeaters 7 and 5. Two exemplary mutual inductance coils 9 and 10 are connected to the outputs of the latter: one directly, and the other through the switch //. The secondary windings of the coils are connected in series (for a phase-sensitive sine-type circuit). The geometric sum of the voltages removed from the secondary windings of the inductors 9 and 10 through the low pass filter 12 is fed to the rectifier 13, and then to the input of the DC potentiometer 14.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU634062A SU128938A1 (en) | 1959-07-16 | 1959-07-16 | Device for measuring small phase angles of deviation from 90 ° phase shift of two alternating voltages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU634062A SU128938A1 (en) | 1959-07-16 | 1959-07-16 | Device for measuring small phase angles of deviation from 90 ° phase shift of two alternating voltages |
Publications (1)
Publication Number | Publication Date |
---|---|
SU128938A1 true SU128938A1 (en) | 1959-11-30 |
Family
ID=48400119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU634062A SU128938A1 (en) | 1959-07-16 | 1959-07-16 | Device for measuring small phase angles of deviation from 90 ° phase shift of two alternating voltages |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU128938A1 (en) |
-
1959
- 1959-07-16 SU SU634062A patent/SU128938A1/en active
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