SU122791A1 - Amplitude Modulation Depth Gauge - Google Patents

Amplitude Modulation Depth Gauge

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Publication number
SU122791A1
SU122791A1 SU613999A SU613999A SU122791A1 SU 122791 A1 SU122791 A1 SU 122791A1 SU 613999 A SU613999 A SU 613999A SU 613999 A SU613999 A SU 613999A SU 122791 A1 SU122791 A1 SU 122791A1
Authority
SU
USSR - Soviet Union
Prior art keywords
modulation depth
amplitude modulation
depth gauge
voltage
detectors
Prior art date
Application number
SU613999A
Other languages
Russian (ru)
Inventor
А.Н. Вирский
Original Assignee
А.Н. Вирский
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. Вирский filed Critical А.Н. Вирский
Priority to SU613999A priority Critical patent/SU122791A1/en
Application granted granted Critical
Publication of SU122791A1 publication Critical patent/SU122791A1/en

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  • Measurement Of Current Or Voltage (AREA)

Description

Известны измерители глубины амплитудной модул ции, в которых дл  непосредственного определени  отношени  амплитуд положительного и отрицательного полупериодов модзлирующей частоты к амплитуде напр жени  несущей частоты использована балансно-компенсационна  схема.Amplitude modulation depth gauges are known in which a balance-compensation circuit is used to directly determine the ratio of the amplitudes of the positive and negative half-periods of the modulating frequency to the amplitude of the carrier voltage.

Недостаток подобных измерителей глубины амплитудной модул ции состоит в том, что они не дают возможности обеспечить достаточно высокую точность измерени , так как при измерении модул ции «вверх и «вниз чувствительность схемы измен етс , вследствие чего градуировка потенциометра, включенного в цепь компенсационного напр жени , нарушаетс .The disadvantage of such amplitude modulation depth gauges is that they do not allow for sufficiently high measurement accuracy, since when measuring the modulation "up and" down, the sensitivity of the circuit changes, resulting in the graduation of the potentiometer included in the compensation voltage circuit, violated.

В предлагаемом устройстве эти недостатки устранены тем, что в нем дл  выпр млени  исследуемого сигнала используют два детектора, причем при измерении тубины модул ции «вниз использован один, а при из.черении глубины модул ции «вверх - оба детектора. Дальнейшее повышение чувствительности измерител  достигнуто применением в качестве индикатора нул  электронно-лучевой трубки.In the proposed device, these drawbacks are eliminated by the fact that it uses two detectors to rectify the signal under investigation, and, when measuring the modulus tubin, one is used down, and when the modulation depth is up, both detectors are used. A further increase in the sensitivity of the meter is achieved by using a cathode ray tube as an indicator.

Блок-схема описываемого устройства приведена на чертеже.The block diagram of the described device is shown in the drawing.

Модзлированное напр жение высокой частоты от передатчика или генератора подведено через входное устройство 1 к двум детекторам высокой частоты 2 и 3, включенным по схеме удвоени  напр жени . Детектор 2 работает в случае измерени  модул ции «вниз, а детекторы 2 и 3 - в случае измерени  модул ции «вверх.The modulated high-frequency voltage from the transmitter or generator is connected through the input device 1 to two high-frequency detectors 2 and 3, switched on according to the voltage doubling circuit. Detector 2 operates in the case of modulation measurement “down,” and detectors 2 and 3, in the case of measurement modulation “up.

На нагрузках детекторов высокой частоты, одинаковых по величине , выдел етс  выпр мленное пульсируюшее напр жение различной пол рности .The loads of high frequency detectors, which are the same in magnitude, produce a rectified pulsed voltage of different polarity.

В качестве индикатора компенсации используют электронно-лучевую трубку 4, на вертикальные пластины которой подаютс  одновременно два напр жени  - переменна  составл юша  пульсирующего напр жени  и посто нна  составл юща  пульсирующего напр жени  с нижней части нагрузки потенциометра 5, представл юща  собой компенсационное напр жение.A cathode ray tube 4 is used as an indicator of compensation, on the vertical plates of which two voltages are applied simultaneously - the variable is the component of the pulsating voltage and the constant component of the pulsating voltage from the lower part of the load of the potentiometer 5, which is a compensation voltage.

SU613999A 1958-11-22 1958-11-22 Amplitude Modulation Depth Gauge SU122791A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU613999A SU122791A1 (en) 1958-11-22 1958-11-22 Amplitude Modulation Depth Gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU613999A SU122791A1 (en) 1958-11-22 1958-11-22 Amplitude Modulation Depth Gauge

Publications (1)

Publication Number Publication Date
SU122791A1 true SU122791A1 (en) 1958-11-30

Family

ID=48394432

Family Applications (1)

Application Number Title Priority Date Filing Date
SU613999A SU122791A1 (en) 1958-11-22 1958-11-22 Amplitude Modulation Depth Gauge

Country Status (1)

Country Link
SU (1) SU122791A1 (en)

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