SU634183A1 - Electronic moisture-content meter - Google Patents

Electronic moisture-content meter

Info

Publication number
SU634183A1
SU634183A1 SU762377541A SU2377541A SU634183A1 SU 634183 A1 SU634183 A1 SU 634183A1 SU 762377541 A SU762377541 A SU 762377541A SU 2377541 A SU2377541 A SU 2377541A SU 634183 A1 SU634183 A1 SU 634183A1
Authority
SU
USSR - Soviet Union
Prior art keywords
diode
transistor
source
reference voltage
voltage
Prior art date
Application number
SU762377541A
Other languages
Russian (ru)
Inventor
Анатолий Никифорович Суковатицин
Original Assignee
Предприятие П/Я А-1297
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 Предприятие П/Я А-1297 filed Critical Предприятие П/Я А-1297
Priority to SU762377541A priority Critical patent/SU634183A1/en
Application granted granted Critical
Publication of SU634183A1 publication Critical patent/SU634183A1/en

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

Claims (2)

(54) ЭЛЕКТРОННЫЙ ВЛАГОМЕР 5 в момент отрицательной полуволны колебаний протекает ток, угол отсечки которого определ етс  напр жением смещени , приложенным к второму электроду диода. Основна  часть этого напр жени  образуетс  эа счет источника 6, опорного напр жени , сигнал которого передаетс  с помощью дополнительного транзистора 8. Поскольку этот т ранзистор включен в цепь диода 5 эмиттером, его входное сопрогивжние ,  вл ющеес  нагрузкой диода , оказываетс  чрезвычайно малым, что необходимо дл  достижени  линейности выходной характеристики влагомера. В то же врем  транзистор 8 имеет достаточно большое сопротивление и не нагрухсает источник 6 опорного напр жени так как подключен к нему базовым переходом Формула изобретени  Электронный влагомер, содержащий соединенные с общей шиной автогенератор перемен6 34 ого тока с параллельным колебательным контуром и первичным преобразователем на выходе , цепь из последовательно соеданенных конденсатора и диода, источник опорного напр жени  и регистрирующее устройство, отличающийс  тем, что, с целью повышени  точности измерени , он дополнительно снабжен транзистором, база которого соединена с выхо дом источника опорного напр жени , змиттер с общей точкой диода и конденсатора, а коллектор - с регистрирующим устройством, при этом эмиперно-базовый переход транзистора включен согласно с переходом диода. Источники информации, прин тые во внимание при экспертизе: 1. Измерительна  техника, № 7, 1972, с. 58-60. (54) ELECTRONIC MOISTURE 5 at the time of the negative half-wave of oscillations a current flows, the cut-off angle of which is determined by the bias voltage applied to the second diode electrode. The main part of this voltage is formed by the source 6, the reference voltage, the signal of which is transmitted by an additional transistor 8. Since this transistor is connected to the diode 5 circuit by the emitter, its input co-current, which is a diode load, is extremely small, which is necessary to achieve linearity of the output characteristics of the moisture meter. At the same time, the transistor 8 has a sufficiently large resistance and does not load the source 6 of the reference voltage as connected to it by a basic transition. Formula of the invention. An electronic moisture meter containing an auto-alternating current generator with a parallel oscillatory circuit and a primary converter at the output bus, a chain of successively connected capacitors and a diode, a source of reference voltage, and a recording device, characterized in that, in order to improve the measurement accuracy, it is It is equipped with a transistor, the base of which is connected to the output of a voltage source, a zmitter with a common point of a diode and a capacitor, and a collector - with a recording device, while the emitter-base transition of the transistor is connected according to the diode transition. Sources of information taken into account in the examination: 1. Measuring equipment, № 7, 1972, p. 58-60. 2.Авторское гаидетельсгво СССР № 316002, М.Кл. G 01 N 27/72, 1969.2. Author's USSR USSR No. 316002, M. Kl. G 01 N 27/72, 1969.
SU762377541A 1976-06-28 1976-06-28 Electronic moisture-content meter SU634183A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762377541A SU634183A1 (en) 1976-06-28 1976-06-28 Electronic moisture-content meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762377541A SU634183A1 (en) 1976-06-28 1976-06-28 Electronic moisture-content meter

Publications (1)

Publication Number Publication Date
SU634183A1 true SU634183A1 (en) 1978-11-25

Family

ID=20667458

Family Applications (1)

Application Number Title Priority Date Filing Date
SU762377541A SU634183A1 (en) 1976-06-28 1976-06-28 Electronic moisture-content meter

Country Status (1)

Country Link
SU (1) SU634183A1 (en)

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