SU789842A1

SU789842A1 - Voltage monitoring apparatus

Info

Publication number: SU789842A1
Application number: SU762414697A
Authority: SU
Inventors: Игорь Борисович Анисимов; Виталий Михайлович Лейко
Original assignee: Предприятие П/Я В-2203
Priority date: 1976-10-25
Filing date: 1976-10-25
Publication date: 1980-12-23

Description

Изобретение относится к измерительной технике и может быть использовано для контроля источников питания.The invention relates to measuring equipment and can be used to control power sources.

Известны двухпороговые устройст- 5 ва контроля напряжения, обеспечивающие допусковый контроль источников питания [ 1)и [2] .Two-threshold voltage control devices are known that provide tolerance control of power supplies [1) and [2].

Общим недостатке», известных двухпороговых устройств является ограни- Ю ченный диапазон регулирования зоны контроля.A common drawback of the known two-threshold devices is the limited range of regulation of the control zone.

Ближайшим техническим решением к предлагаемому изобретению является устройство контроля напряжения, со- 15 держащее¹· два пороговых каскада на транзисторах, включенных по схеме с общим эмиттером, с диодами в эмиттерных цепях, и источники опорных напряжений [2]. 20The closest technical solution to the present invention is a voltage control device 15 co holding ¹ · two threshold stage transistors, connected in a common emitter circuit, with diodes in the emitter circuits and voltage reference [2]. 20

Недостатком указанного устройства является узкий динамический диапазон контролируемых напряжений, обусловленный узким диапазоном регулирования зоны контроля, ограниченный парамет- 25 рами элементов схемы.The disadvantage of this device is the narrow dynamic range of the controlled voltages, due to the narrow range of regulation of the control zone, limited by the parameters of 25 circuit elements.

Цель изобретения — расширение динамического диапазона контролируемых напряжений и диапазона регулирования зоны контроля. 30The purpose of the invention is the expansion of the dynamic range of controlled voltages and the range of regulation of the control zone. thirty

Указанная.цель достигается тем, что в устройстве контроля напряжения, содержащем два пороговых каскада на транзисторах, включенных по схеме с общим эмиттером,с диодами в эмиттерных цепях, и источники опорных напряжений, один из источников опооного напряжения соединен с базой первого· транзистора, другой — с эмиттером второго транзистора, а источник контролируемого напряхеения· соединен одним из полюсов с одноименными полюсами источников опорного напряжения, а другим полюсом — с эмиттером первого и базой второго транзисторов, при этом коллекторы транзисторов через общий резистор подсоединены к шине питания.This goal is achieved by the fact that in a voltage control device containing two threshold stages on transistors connected in a circuit with a common emitter, with diodes in the emitter circuits, and voltage reference sources, one of the oponic voltage sources is connected to the base of the first transistor, the other - with the emitter of the second transistor, and the source of controlled voltage is connected by one of the poles with the same poles of the voltage sources, and the other pole with the emitter of the first and the base of the second transistor, collectors of transistors through a common resistor are connected to the power bus.

На фиг. 1 приведена принципиальная электрическая схема устройства контроля напряжения; на фиг. 2 — вариант выполнения блока источников опорных напряжений.In FIG. 1 shows a circuit diagram of a voltage control device; in FIG. 2 is an embodiment of a block of reference voltage sources.

Устройство контроля напряжения содержит два пороговых каскада на транзисторах 1 и 2, включенных по схеме с общим эмиттером, с диодами 3 и 4 соответственно в эмиттерных цепях, причем коллекторы транзисторов 1 и 2 объединены и подключены через резне тор 5 к соответствующему источнику питания 6, к другому полюсу которого подключены через диоды 3 и 4 эмиттеры транзисторов 1 и 2, и блок 7 источников опорных напряжений. ВыходThe voltage monitoring device contains two threshold stages on transistors 1 and 2, connected in a circuit with a common emitter, with diodes 3 and 4, respectively, in the emitter circuits, and the collectors of transistors 1 and 2 are combined and connected through a resonator 5 to the corresponding power source 6, the other pole of which is connected via diodes 3 and 4 to the emitters of transistors 1 and 2, and block 7 of the voltage reference sources. Exit

8. одного источника опорного напряжения соединен с базой первого транзистора, выход 9 другого источника опорного напряжения соединен с эмиттером второго транзистора, а источник контролируемого напряжения 10 соединен- одним из полюсов с одноименны ми полюсами источников опорных напряжений, объединенными общей шиной 11, а другим полюсом — с эмиттером первого и базой второго транзисторов. При этом выходной сигнал снимается с коллекторов транзисторов 1 и 2 и подается на блок индикации 12.8. one source of the reference voltage is connected to the base of the first transistor, the output 9 of another source of the reference voltage is connected to the emitter of the second transistor, and the source of the controlled voltage 10 is connected by one of the poles with the same poles of the sources of reference voltage, connected by a common bus 11, and the other pole - with the emitter of the first and the base of the second transistor. In this case, the output signal is removed from the collectors of transistors 1 and 2 and fed to the display unit 12.

Устройство работает следующим об разом.The device operates as follows.

При номинальном значении контроли- 20 руемого напряжения и,_о , т.е. когда U_e 7 и<₀ 7 U,, на базу транзистора и эмиттер транзистора 2 поданы потенциалы источников опорных напряжений (полярность которых совпадает с полярностью контролируемого напряжения) , обеспечивающие запирание транзисторов. Пусть контролируется, например, напряжение положительной полярности, тогда при и_й 7 U _?о 7 U₉ __ транзистор 1 будет закрыт вследствие того,что напряжение Ug на его базе больше напряжения Ц,_о, приложенного к его эмиттеру,а трансформатор 2 будет также закрыт,так как напряжение U_1Oна его базе больше напряжения Uq, приложенного к его эмиттеру.At a nominal value of 20 controlled voltage and, _о , i.e. when U _e 7 and < ₀ 7 U ,, the potentials of the reference voltage sources (the polarity of which coincides with the polarity of the controlled voltage) are applied to the base of the transistor and emitter of transistor 2, which ensure the transistors are locked. Let controlled by, for example, the voltage of positive polarity, then when and _th 7 _{U? About} 7 U ₉ __ transistor 1 will be closed due to the fact that the voltage Ug at its base more strain C, _O applied to its emitter, and the transformer 2 will also is closed, since the voltage U _1O at its base is greater than the voltage Uq applied to its emitter.

При выходе контролируемого напряжения за установленные пределы открывается один из транзисторов. Если U„„ 7 U_o, то открывается транзистор 40 1,· если U₄₀ < (J,, №&- открывается-транзистор- 1·-, если U_1O < - U* , то открывается транзистор 2.When the controlled voltage goes beyond the set limits, one of the transistors opens. If U „„ 7 U _o , then transistor 40 1 opens, · if U ₄₀ <(J ,, No. & - opens-transistor-1 · -, if U _1O <- U *, then transistor 2 opens.

Предлагаемое устройство может быть использовано .также и для конроля напря^ жения отрицательной полярности при изменении полярности источников опорного напряжения без каких-либо передёлок в схеме. Необходимо лишь, чтобы полярность источников опорных и конт- „ ротируемого напряжения была одинако- ^эивой.The proposed device can be used. Also for monitoring voltage of negative polarity when changing the polarity of the voltage sources without any alterations in the circuit. It is only necessary that the polarity of the sources of support and kont- "which is rotated voltage was identical ^ee howl.

Поскольку устанавливаемые пороги не .зависят от параметров элементов, а определяются внешними источниками опорных напря>хений, предлагаемое устройство обеспечивает возможность контроля напряжений в широком динамическом диапазоне и _во_зможность регулирования в широком диапазоне зоны контроля .Since the set thresholds do not depend on the parameters of the elements, but are determined by external sources of reference voltages, the proposed device provides the ability to control stresses in a wide dynamic range and the possibility of regulation in a wide range of the control zone.

Для обеспечения раздельной регулировки порогов при наличии одного опорного стабилизатора напряжения могут быть использованы два резистивных делителя напряжения, крайними выводами подключенные к выходам опорного стабилизатора. Средние выводы резистивных делителей будут являться выходами источников опорных напряжений.To ensure separate adjustment of the thresholds in the presence of one reference voltage stabilizer, two resistive voltage dividers can be used, with the extreme leads connected to the outputs of the reference stabilizer. The average outputs of the resistive dividers will be the outputs of the reference voltage sources.

На фиг. 2 изображен вариант выполнения источника опорных напряжений для случая, если необходимо иметь раздельную регулировку порогов с использованием одного опорного стабилизатора 13. Такая регулировка обеспечивается потенциометрами 14 и 15.In FIG. 2 shows an embodiment of a reference voltage source for the case where it is necessary to have separate threshold adjustment using one reference stabilizer 13. This adjustment is provided by potentiometers 14 and 15.

Claims

The invention relates to a measurement technique and can be used to control power sources. Two-threshold voltage control devices are known, which provide for tolerance control of 1Di 2 power sources. A common disadvantage of the known two-threshold devices is the limited control range of the control zone. The closest technical solution to the present invention is a voltage control device containing two threshold stages on transistors connected in a circuit with a common purpose, with (diodes in the main circuits, and sources of reference voltages 2. The disadvantage of these devices is narrow dynamic range of controlled voltages due to a narrow range of regulated control zones, limited by the parameters of the circuit elements. The purpose of the invention is to expand the dynamic range of controlled voltages and to The control range of the control zone. The indicated target is achieved by the fact that in a voltage control device containing two threshold stages on transistors connected in a common emitter circuit with diodes in emitter circuits, and sources of reference voltages, one of the sources THE SUPPORTING VOLTAGE is connected to the base of the first transistor, the other is connected to the emitter of the second transistor, and the source of the controlled voltage is connected by one of the poles to the poles of the same source of the reference voltage, and the other pole to the emitter of the first and DNAase second transistors, the collectors of transistors through a resistor connected to the common power schine. FIG. 1 is a circuit diagram of a voltage monitor; in fig. 2 shows an embodiment of a block of sources of reference voltages. The voltage control device contains two threshold stages on transistors G and 2, connected according to a common emitter circuit, with diodes 3 and 4, respectively, in smiter circuits, the collectors of transistors 1 and 2 being combined and connected via a chopper 5 to the corresponding power source 6, to the other pole of which the emitters of transistors 1 and 2 are connected via diodes 3 and 4, and block 7 of sources of reference voltages. Output 8. one source of the reference voltage is connected to the base of the first transistor, output of the other source of the reference voltage is connected to the emitter of the second transistor, and the source of the controlled voltage 10 is connected — one of the poles to the same poles of the reference voltage sources — combined by a common bus 11, and the other pole - with the emitter of the first and the base of the second transistors. The output signal is removed from the collectors of transistors 1 and 2 and fed to the display unit 12. The device operates as follows. At the nominal value of the controlled voltage, and, d, i.e. when 7 7 U, j, the potentials of the sources of the reference voltages (the polarity of which coincides with the polarity of the controlled voltage) are applied to the base of transistor 1 and the emitter of transistor 2, ensuring the locking of the transistors. Let the voltage of a positive polarity be controlled, for example, then at Ug 7 and, t, 7 and transistor 1 will be closed due to the fact that the voltage Ug at its base is greater than the voltage and applied to its emitter, and transformer 2 will also be closed because the voltage at its base is greater than the voltage Vt) applied to its emitter. When the monitored voltage exceeds the set limits, one of the transistors opens. If 7 Ug, then transistor 1 opens. if P ,, fco-open-eistor, if -U ", then transistor 2 opens. The proposed device can be used. also for controlling the voltage of negative polarity when the polarity of the sources of reference voltage changes without alteration in the scheme. It is only necessary that the polarity of the sources of the reference and controlled voltage be the same. Since the thresholds to be set depend on the parameters of the elements and are determined by the external sources of the reference voltages, the proposed device provides the ability to control voltages in a wide dynamic range. range and control capability in a wide range of control zones. In order to provide separate adjustment of thresholds with one voltage regulator, two resistive voltage dividers can be used, with extreme terminals connected to the outputs of the reference stabilizer. The middle pins of the resistive dividers will be the outputs of the sources of the reference voltage Pa. Figure 2 shows an embodiment of a source of reference voltages for the case if it is necessary to have separate thresholds adjustment using one reference stabilizer 13. Such adjustment is provided by potentiometers 14 and 15. Claims of the invention A voltage control device comprising two threshold stages on transistors connected in accordance with a common emitter, from a diode in emitter circuits, and sources of reference voltages, characterized in that, in order to broaden the dynamic range of monitored voltages and diameters the control zone is controlled, one of the sources of the reference voltage is connected to the base of the first transistor, the other is connected to the emitter of the second transistor, and the source of the controlled voltage is connected to one of the poles from the poles of the reference voltage sources and the other to the emitter of the first and the base of the second transistors, while the collectors of the transistors are connected via a common resistor to the power bus. Sources of information taken into account in the examination 1. Issues of radio electronics, series OT, vol. 21, 1969, p. 76, fig.3.

2. Electricity, 1969, 12, ris4. (prototype). .