SU676928A1 - Method of measuring frequency characteristic of thermoanemometric sensitive element - Google Patents
Method of measuring frequency characteristic of thermoanemometric sensitive elementInfo
- Publication number
- SU676928A1 SU676928A1 SU772531157A SU2531157A SU676928A1 SU 676928 A1 SU676928 A1 SU 676928A1 SU 772531157 A SU772531157 A SU 772531157A SU 2531157 A SU2531157 A SU 2531157A SU 676928 A1 SU676928 A1 SU 676928A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sensitive element
- thermoanemometric
- feedback amplifier
- frequency characteristic
- measuring frequency
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
(посто нную времени) усилител напр жени , например, с немощью корректируюндей емкости 6, добиваютс по влени автоколебаний в контуре регулировани . Значение корректирующей емкости однозначно определ ет частотную характеристику усилител напр жени , а следовательно, и частотную характеристику чувствительного элемента, так как автоколебани в контуре регулировани наступают при соотношении посто нных времени чувствительного элемента и усилител 3, равном двум.(constant time) voltage amplifier, for example, with the weakness of adjusting capacitance 6, achieve the appearance of self-oscillations in the control loop. The value of the correction capacitance unambiguously determines the frequency response of the voltage amplifier, and hence the frequency response of the sensitive element, since self-oscillations in the control loop occur at a ratio of constant time of the sensitive element and amplifier 3 equal to two.
Дл упрощени измерений элемент, регулирующий полосу пропускани усилител напр жени , можно проградуировать непосредственно в величинах граничной частоты , либо посто нной времени чувствительного элемента. В этом случае дл получени однозначности отсчета необходимо иметь одинаковую крутизну контура регулировани дл разных сопротивлений чувствительных элементов, что достигаетс с помощью соответствующей регулировки коэффициента усилени напр жени .In order to simplify the measurement, the element regulating the bandwidth of the voltage amplifier can be calibrated directly in terms of the cut-off frequency, or the time constant of the sensing element. In this case, to obtain unambiguity of reference, it is necessary to have the same steepness of the control loop for different resistances of the sensing elements, which is achieved by means of a corresponding adjustment of the voltage gain.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772531157A SU676928A1 (en) | 1977-10-14 | 1977-10-14 | Method of measuring frequency characteristic of thermoanemometric sensitive element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772531157A SU676928A1 (en) | 1977-10-14 | 1977-10-14 | Method of measuring frequency characteristic of thermoanemometric sensitive element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU676928A1 true SU676928A1 (en) | 1979-07-30 |
Family
ID=20727794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772531157A SU676928A1 (en) | 1977-10-14 | 1977-10-14 | Method of measuring frequency characteristic of thermoanemometric sensitive element |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU676928A1 (en) |
-
1977
- 1977-10-14 SU SU772531157A patent/SU676928A1/en active
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