SU72987A1 - AC frequency measurement method - Google Patents

AC frequency measurement method

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Publication number
SU72987A1
SU72987A1 SU3371A SU339642A SU72987A1 SU 72987 A1 SU72987 A1 SU 72987A1 SU 3371 A SU3371 A SU 3371A SU 339642 A SU339642 A SU 339642A SU 72987 A1 SU72987 A1 SU 72987A1
Authority
SU
USSR - Soviet Union
Prior art keywords
frequency
measurement method
active
frequency measurement
resistance
Prior art date
Application number
SU3371A
Other languages
Russian (ru)
Inventor
А.Н. Фюрстенберг
Original Assignee
А.Н. Фюрстенберг
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by А.Н. Фюрстенберг filed Critical А.Н. Фюрстенберг
Priority to SU3371A priority Critical patent/SU72987A1/en
Application granted granted Critical
Publication of SU72987A1 publication Critical patent/SU72987A1/en

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Description

СПОСОБ ИЗМЕРЕНИЯ ЧАСТОТЫ ПЕРЕМЕнфг0 9 А 3 р. METHOD OF MEASURING THE FREQUENCY OF FREQUENCIES 9 A 3 p.

За влено 27 июл  1945 г. за Л 339642 I || - Народный Комиссариат св зи СССР I ЕХгИТЧЕСКД ;It was filed on July 27, 1945 for L 339642 I || - People's Commissariat of Communications of the USSR I EHGITCHESKDS;

Известны способы измерени  частоты перемениог ГТСпгтгMethods are known for measuring the frequency of a variable.

В описываемом способе переменный ток, частоту которого необходимо измерить, подводитс  к разветвлению, представл ющему собой смешанную цепь, состо щую из одного индуктивного и трех активных сопротивлений. О частоте тока суд т по величине активного переменного сопротивлени , обусловливающего равенство падений (напр жений на активных сопротивлени х в ветв х.In the described method, the alternating current, the frequency of which is to be measured, is supplied to a branching, which is a mixed circuit consisting of one inductive and three active resistances. The current frequency is judged by the magnitude of the active variable resistance, which determines the equality of the drops (voltages across the active resistances in the branches x).

Принципиальна  схема предлагаемого способа измерени  приведена на чертеже.A schematic diagram of the proposed measurement method is shown in the drawing.

Напр жение измер емой частоты через усилитель низкой частоты и через фильтрующую цепь Lф -Rф подаетс  на параллельную цепь, состо щую из эталонного активного сопротивлени  Ry; и эталонной индуктивности LN , последовательно с которыми соответственно включены активные сопротивлени  Ri и RsПри равенстве падени , напр жений на сопротивлени х Ri и R2 частота тока определитс  из пропорции: zг i -;-;; .The voltage of the measured frequency through the low-frequency amplifier and through the filter circuit Lf-RF is fed to a parallel circuit consisting of a reference active resistance Ry; and the reference inductance LN, in series with which, respectively, the active resistances Ri and Rs are included. In case of equal fall, the voltages on the resistances Ri and R2, the current frequency is determined from the proportion: z i i -; - ;; .

тр,е Zi Ryi-{-Jш L -полное сопротивление катушки переменномуTr, e Zi Ryi - {- Jш L - full coil resistance to alternating

току.current.

Остальна  часть схемы не имеет непосредственного отнощени  к описываемому способу и служит дл  измерени  напр жений на сопротивлени х 1 и методом лампового вольтметра.The rest of the circuit is not directly related to the described method and serves to measure the voltages across the resistances 1 and the lamp voltmeter method.

Предмет изобретени Subject invention

Способ измерени  частоты переменного тока, отличающийс  тем, что ток подают к разветвлению, одна ветвь которого составлена из посто нного активного и посто нного индуктивного сопротивлени , соединенных последовательно, а втора  ветвь - также из соединенных последовательно посто нного активного и переменного активного сопротивлений , и о частоте тока, подведенного к разветвлению, суд т по величине переменного активного сопротивлени , обусловливающего одинаковые падени  напр жени  на посто нных активных сопротивлени х в обеих ветв х.A method for measuring an alternating current frequency, characterized in that a current is supplied to a branching, one branch of which is composed of constant active and constant inductive resistance connected in series, and the second branch also of connected in series constant active and variable active resistance, and the frequency of the current applied to the ramification is judged by the magnitude of the variable resistance, which causes the same voltage drop across the constant resistance in both branches x.

А. Н. Фюрстенберг A.N. Furstenberg

I БГ БТ{10ТГ1-/,I BG BT {10TG1- /,

/,R/, R

2 2

ишш пт пish fri fr

,RSRS

ллт лгпгиги ттlt lgpgygy tt

0ia I 0 00ia I 0 0

+ /5, - I ,+ / 5, - I,

55д55d

SU3371A 1945-07-27 1945-07-27 AC frequency measurement method SU72987A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU3371A SU72987A1 (en) 1945-07-27 1945-07-27 AC frequency measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU3371A SU72987A1 (en) 1945-07-27 1945-07-27 AC frequency measurement method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
SU731924824A Addition SU622942A2 (en) 1973-05-29 1973-05-29 Mechanism of levelling walking excavator ski

Publications (1)

Publication Number Publication Date
SU72987A1 true SU72987A1 (en) 1947-11-30

Family

ID=52693785

Family Applications (1)

Application Number Title Priority Date Filing Date
SU3371A SU72987A1 (en) 1945-07-27 1945-07-27 AC frequency measurement method

Country Status (1)

Country Link
SU (1) SU72987A1 (en)

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