SU1270883A1

SU1270883A1 - Function generator

Info

Publication number: SU1270883A1
Application number: SU833688694A
Authority: SU
Inventors: Владимир Михайлович Щелоков; Владимир Иванович Горячев; Олег Прокопьевич Лушов; Виктор Анатольевич Трусов
Original assignee: Организация П/Я В-8466
Priority date: 1983-11-24
Filing date: 1983-11-24
Publication date: 1986-11-15

Description

Изобретение относится к импульсной технике и может быть использовано, например, в устройствах автоматики.The invention relates to a pulse technique and can be used, for example, in automation devices.

Цель изобретения - обеспечение возможности формирования пилообразного напряжения одной полярности при высокой стабильности работы устройства с. одновременным повышением помехоустойчивости.The purpose of the invention is the ability to form a sawtooth voltage of one polarity with high stability of the device simultaneous increase in noise immunity.

На чертеже приведена структурная электрическая схема устройства.The drawing shows a structural electrical diagram of the device.

Устройство содержит последовательно соединенные первый, второй, третий и четвертый, управляемые ключи 1,2,3 и 4, пороговый элемент 5, прямой выход которого соединен с управляющим входом первого и третьего управляемых ключей 1 и 3, а инверсный выход - с управляющим входом второго и четвертого управляемых ключей 2 и 4,’первый конденсатор 6, первая обкладка которого соединена с. точкой соединения второго и третьего управляемых ключей 2 и 3, шину 7 источника питания, второй конденсатор 8, токостабилизирующий элемент 9, включенный между точкой соединения первого и второго управляемых ключей 1 и 2, вход первого управляемого ключа соединен с шиной 7 источника питания и первой обкладкой второго конденсатора 8, вторая обкладка которого соединена с входом порогового элемента 5 и первой обкладкой первого денсатора 6, вторая обкладка рого соединена с общей шиной ройства и выходом четвертого ляемого ключа 4. Пороговый элемент .содержит первый резистор 11, первый вывод которого соединен с входом порогового элемента 5,. второй вывод с входом первого элемента НЕ 12, выход которого соединен с входом второго элемента НЕ 13, соединен элемента мента НЕ с первым и через конденсатор 15 с выходом первого элемента НЕ 12, вход которого через второй резистор 16 соединен с выходом второго элемента НЕ 13.The device contains series-connected first, second, third and fourth, managed keys 1,2,3 and 4, a threshold element 5, the direct output of which is connected to the control input of the first and third controlled keys 1 and 3, and the inverse output is connected to the control input of the second and the fourth controlled keys 2 and 4, the first capacitor 6, the first lining of which is connected to. the connection point of the second and third controlled keys 2 and 3, the bus 7 of the power source, the second capacitor 8, a current stabilizing element 9 connected between the connection point of the first and second controlled keys 1 and 2, the input of the first controlled key is connected to the bus 7 of the power source and the first lining the second capacitor 8, the second lining of which is connected to the input of the threshold element 5 and the first lining of the first capacitor 6, the second lining of the horn is connected to the common busbar and the output of the fourth switch key 4. Threshold element .c contains the first resistor 11, the first output of which is connected to the input of the threshold element 5 ,. the second output with the input of the first element HE 12, the output of which is connected to the input of the second element HE 13, is connected to the first element HE and through the capacitor 15 to the output of the first element HE 12, the input of which through the second resistor 16 is connected to the output of the second element HE 13.

Устройство работает следующим образом.The device operates as follows.

Допустим торы 6 и емкости, жения на выходной конкото10 уступрав выход которого с вторым выходом порогового 5 и с входом третьего эле14, выход которого соединен выходом порогового элемента , интегрирующие конденса8 приблизительно равны по тогда после подачи напряшины питания потенциал на шине 17 устройства будетLet us assume tori 6 and capacities, the output of which 10 is controlled by the output of which is connected to the second output of the threshold 5 and to the input of the third eleme14, the output of which is connected by the output of the threshold element, the integrating condenses8 are approximately equal then, after applying the supply voltage, the potential on the device bus 17 will be

1270883 2 примерно равен половине напряжения питания, что недостаточно для срабатывания порогового элемента. В этот момент на выходной шине 18 будет низкий уровень и ключи 2 и 4 будут закрыты, а на выходной шине 19 высокий уровень и ключи 1 и 3 открыты.1270883 2 is approximately equal to half the supply voltage, which is not enough to trigger a threshold element. At this moment, the output bus 18 will be low and the keys 2 and 4 will be closed, and the output bus 19 will have a high level and the keys 1 and 3 are open.

Следовательно по цепи шина 7 питания устройства, ключ 1, токостабилизирующий элемент 9, ключ 3, интегрирующий конденсатор 6, общая шина 10 устройства подает ток, увеличивающий разность потенциалов на обкладках интегрирующего конденсатора 6.Therefore, along the circuit, the power supply bus 7 of the device, key 1, the current-stabilizing element 9, key 3, the integrating capacitor 6, the common bus 10 of the device supplies a current that increases the potential difference on the plates of the integrating capacitor 6.

По цепи шина 7 питания устройства, ключ 1, токостабилизирующий элемент 9, ключ 2, интегрирующий конденсатор 8, шина 7 питания устройства пойдет ток, уменьшающий разность потенциалов на обкладках интегрирующего конденсатора 8. Это приведет к линейному нарастанию напряжения на выходной шине 17 устройства до тех пор, пока не произойдет срабатывание порогового элемента 5, пороги срабатывания которого определяются отношением резисторов 11 и 16. Переключающий фронт импульса с выхода элемента. НЕ 14 передается на точку соединения элементов НЕ 12 и 13, где, дифференцируясь, ускоряет процесс срабатывания всего порогового элемента 5. После переключения порогового элемента 5 на выходной шине 19 устройства устанавливается низкий, а на шине 18 высокий уровень, ключи 1 и 3 закрываются, а ключи 2 и 4 открываются. Следовательно, по цепи шина 7 питания устройства, интегрирующий конденсатор 8, ключ 2, токостабилизирующий элемент 9, ключ 4, общая шина устройства пойдет ток, увеличивающий разность потенциалов на обкладках интегрирующего конденсатора 8, а по цепи общая· шина устройства, ключ 4, токостабилизирующий элемент. 9, ключ 2, интегрирующий конденсатор 6, общая шина устройства пойдет ток, уменьшающий разность потенциалов на обкладках интегрирующего конденсатора 6. Это приведем к линейному снижению напряжения на выходной шине 17 устройства до тех пор, .пока не произойдет обратное срабатывание порогового элемента 5. Далее процесс циклически повторяется.The circuit is connected to the power supply bus 7 of the device, key 1, the current-stabilizing element 9, key 2, the integrating capacitor 8, the power supply bus 7 of the device will receive a current that reduces the potential difference on the plates of the integrating capacitor 8. This will lead to a linear increase in voltage on the output bus 17 of the device to those until the triggering of the threshold element 5, the thresholds of which are determined by the ratio of resistors 11 and 16. The switching front of the pulse from the output of the element. NOT 14 is transmitted to the connection point of elements NOT 12 and 13, where, differentiating, accelerates the response of the entire threshold element 5. After switching the threshold element 5 on the output bus 19 of the device, it is set low and on bus 18 a high level, keys 1 and 3 are closed, and keys 2 and 4 open. Therefore, through the circuit, the device’s power bus 7, integrating the capacitor 8, key 2, the current stabilizing element 9, key 4, the common bus of the device will go current increasing the potential difference on the plates of the integrating capacitor 8, and the general · device bus, key 4, the current stabilizing circuit element. 9, key 2, integrating capacitor 6, the common bus of the device will flow current, reducing the potential difference on the plates of the integrating capacitor 6. This will lead to a linear decrease in voltage on the output bus 17 of the device until the reverse operation of the threshold element 5. Next the process is cyclically repeated.

Так как скорость увеличения и уменьшения напряжения в точке соединения интегрирующих конденсаторов и 8 определяется одним и тем же током, проходящим через токостабилизирующий элемент 9 и не зависящим от разницы падений напряжений на ключах, амплитуда треугольного напряже- 5 ния на выходной шине 19 устройства определяется разностью между порогами срабатывания и отпускания порогового элемента 5 и не зависит от напряжения . питания, импульсная помеха на шинах ¹⁰питания порогового элемента устройства прикладывается синфазно к его входу через два интегрирующих конденсатора 6 и 8 устройства, что не вызывает преждевременного переклю- 15 чения генератора от помехи по питанию. В данном устройстве имеет место формирование однополярного пилообразного напряжения с высокой симметрией выходных треугольного и противофазных 20 прямоугольных сигналов, что является достижением поставленной цели.Since the rate of increase and decrease of voltage at the junction point of the integrating capacitors and 8 is determined by the same current passing through the current-stabilizing element 9 and not depending on the difference in the voltage drops across the keys, the amplitude of the triangular voltage 5 on the output bus 19 of the device is determined by the difference between thresholds of operation and release of the threshold element 5 and is independent of voltage. power supply, impulse noise on the power supply bus ¹⁰ of the threshold element of the device is applied in phase to its input through two integrating capacitors 6 and 8 of the device, which does not cause the generator to switch prematurely from interference on the power supply. In this device, there is the formation of a unipolar sawtooth voltage with high symmetry of the output triangular and antiphase 20 rectangular signals, which is the achievement of the goal.

Claims

The invention relates to a pulse technique and can be used, for example, in automation devices. The purpose of the invention is to provide the possibility of forming a saw-tooth voltage of one polarity with a high stability of the device while at the same time improving noise immunity. Hell, a hedgehog shows a structural electrical circuit of the device. The device contains serially connected first, second, third and fourth, controllable keys 1,2,3 and 4, threshold element 5, the direct output of which is connected to the control input of the first and third controllable keys 1 and 3, and the inverters are inverted with the control input of the second and fourth controlled switches 2 and 4, the first capacitor 6, the first plate of which is connected to the connection point of the second and third controlled switches 2 and 3, the bus 7, the power source, the second capacitor 8, the current stabilizing element 9, is connected between junction point The first and second controlled switches 1 and 2, the input of the first controlled switch is connected to the power supply bus 7 and the first lining of the second capacitor 8, the second lining of which is connected to the input of the threshold element 5 and the first lining of the first capacitor 6, the second facing of which is connected with the common busbar K) of the device and the output of the fourth controlled key 4. The threshold element .contains the first resistor 11, the first terminal of which is connected to the input of the threshold element 5e, the second terminal to the input of the first element NOT 12, the output of which one with the input of the second element HE 13, the output of which is connected to the second output of the threshold element 5 and to the input of the third element NOT 14, the output of which is connected to the first output of the threshold eh1.meit 5 and through the capacitor 15 with the output of the first element NO 12, the input of which through the second resistor 16 is connected to the output of the second element NOT 13. The device operates as follows. Suppose that the integrating co-sensors of tori 6 and 8 are approximately equal in capacity, then after applying voltage to the power supply lines, P: J :( on the output bus 17 of the device will be approximately equal to half the supply voltage, which is not enough to trigger the threshold element. At this point the output bus 18 will be low and the keys 2 and 4 will be closed, and the output bus 19 will have a high level and the keys 1 and 3. They will open the power supply bus 7, the key 1, the current-stabilizing element 9, the key 3, the integrating capacitor 6, common tire 10 mouth The device supplies a current that increases the potential difference across the plates of the integrating capacitor 6. The device power bus 7, key 1, current stabilizing element 9, key 2, integrating capacitor 8, and device power bus 7 will reduce the potential difference across the plates of the integrating capacitor 8. This will lead to a linear increase in voltage on the output bus 17 of the device until the threshold element 5 is triggered, the thresholds of which are determined by the ratio of resistors 11 and 16. reklyuchayuschy the pulse output from the element. The HE 14 is transmitted to the junction point of the HE elements 12 and 13, where, differentiating, it accelerates the process of triggering the entire threshold element 5. After switching the threshold element 5 on the output bus 19 of the device, a low level is set and on the bus 18 a high level, keys 1 and 3 are closed, and keys 2 and 4 are opened. Consequently, the circuit bus 7 power device, integrating a capacitor 8, a key 2, a current stabilizing element 9, a key 4, a common bus device will receive a current that increases the potential difference across the plates of an integrating capacitor 8, and a common bus, a device bus, a key 4, current-stabilizing element 9, switch 2, the integrating capacitor 6, the common device bus, the current will go, reducing the potential difference across the plates of the integrating capacitor 6. This will lead to a linear decrease in voltage. output bus 17 of the device until the threshold element 5 reverses until the process is completed. Then the process repeats cyclically. Since the rate of increase and decrease in voltage at the connection point of the integrating capacitors 6 and B is determined by the same current passing through the current-stabilizing element 9 and not dependent on the difference of voltage drops on the keys, the amplitude of the triangular voltage on the output bus 19 of the device is determined by the difference between the run and release thresholds of the threshold element 5 and does not depend on the supply voltage; the impulse noise on the power buses of the threshold element of the device is applied in phase to its input two times later. egriruyuschih capacitor 6 and 8 of the device that is not vyzshaot premature switching the generator from interfering nutrition. In this device, the formation of a unipolar sawtooth voltage with high symmetry of the output triangular and antiphase rectangular signals, which is the achievement of the goal. Claim 1. Functional generator containing serially connected first, second, third and fourth controlled keys, the threshold element of the direct output of which is connected to the control inputs of the first and third controlled keys, and the inverse output with control inputs of the second and fourth controllable keys, the first capacitor, the first plate of which is connected to the connection point of the second and third controllable keys, power supply bus, is determined by the fact that, t: and forming a sawtooth voltage of one polarity with high stability: operation of the device with simultaneous increase in noise immunity, a second capacitor, a current stabilizing element, inserted between the connection point of the first and second controlled keys and the connection point of the third and fourth controlled keys, the input of the first the control key is connected to the power supply bus and to the first lining of the second capacitor, the second lining of which is connected to the input of the threshold element and to the first one adkoy first capacitor, the second plate of which is connected to the common bus of the device and the output of the fourth controllable switch.

2. The generator according to claim 1, about aphids and the fact that the threshold element contains the first resistor, the first output of which is connected to the input of the threshold element, the second output - with the input of the first element NOT, the output of which is connected t by the input of the second element NOT, the output of which is connected to the second output of the threshold element and the input of the third element NOT, the output of which is connected to the first output of the threshold element and through a capacitor to the output of the first element NOT whose input through the second resistor is connected to the output of the second element NOT.