SU792592A1

SU792592A1 - Circuit breaking device

Info

Publication number: SU792592A1
Application number: SU782684368A
Authority: SU
Inventors: Алексей Данилович Кудряшов; Леонид Витальевич Рюмин
Original assignee: Предприятие П/Я В-2168
Priority date: 1978-11-14
Filing date: 1978-11-14
Publication date: 1980-12-30

Description

Изобретение относится к радиотехнике и может использоваться в абонентских телефонных устройствах для нормированного прерывания шлейфа.The invention relates to radio engineering and can be used in subscriber telephone devices for normalized loop interruption.

Известно устройство для прерывания $ цепи, содержащее первый и второй резисторы, первый и второй конденсаторы, тиристор, стабилитрон, переключатель, а также источник питания, положительный полюс которого соединен с первой кием— мой приемника сигнала, вторая клемма которого соединена с первой клеммой нагрузки,, вторая клемма которой соединена с анодом тиристора, при ©том первые выводы первого и второго конденсаторов, а также первый вывод первого ревистора соединены с катодом тиристора ЕЦ·A device for interrupting a $ circuit containing the first and second resistors, the first and second capacitors, a thyristor, a zener diode, a switch, and also a power source, the positive pole of which is connected to the first cue — my signal receiver, the second terminal of which is connected to the first terminal of the load, , the second terminal of which is connected to the thyristor anode, while the first terminals of the first and second capacitors, as well as the first terminal of the first resistor are connected to the cathode of the thyristor EC ·

Однако известное устройство облада- ²⁰ вт недостаточной точностью. ·However, the known device has ²⁰ watts of insufficient accuracy. ·

Цель изобретения - повышение точности прерывания цепи.The purpose of the invention is to increase the accuracy of circuit interruption.

Для этого в устройство для прерывания цепи, содержащее первый и второй резисторы, первый и второй ; конденсаторы, тиристор; стабилитрон, переключатель, а также источник питания, положительный полюс которого соединен с первой клеммой приемника сигнала, вторая клемма которого соединена с первой клеммой нагрузки, вторая жлемма которой соединена с анодом тиристора, при этом первые выводы первого и второго конденсаторов, а также первый вывод первого резистора соединены с катодом тиристора, введен блок начального запуска, первая клемма которого соединена с первой клеммой нагрузки, а вторая клемма блока начального запуска соединена с управляющим электродом тиристора, второй вывод первого резистора соединен с управляющим электродом тиристора и первой базой 'введенного'однопереходного транзистора, эмиттер которого соединен с вторым выводом первого конденсатора и первым -выводом второго резистора, второй вы792592 вод которого соединен с второй базой однопереходного транзистора и через раэ> мыкающий контакт переключателя с вторым выводом второго конденсатора,при этом замыкающий контакт переключателя соединен с первой клеммой нагрузки, а стабилитрон соединен параллельно второму конденсатору.To do this, in a device for interrupting a circuit containing the first and second resistors, the first and second; capacitors, thyristor; a zener diode, a switch, as well as a power source, the positive pole of which is connected to the first terminal of the signal receiver, the second terminal of which is connected to the first terminal of the load, the second terminal of which is connected to the anode of the thyristor, while the first leads of the first and second capacitors, as well as the first lead of the first resistors are connected to the thyristor cathode, an initial start-up block is introduced, the first terminal of which is connected to the first load terminal, and the second terminal of the initial start-up block is connected to the thyristor control electrode ora, the second output of the first resistor is connected to the control electrode of the thyristor and the first base of the "introduced" single-junction transistor, the emitter of which is connected to the second output of the first capacitor and the first to the output of the second resistor, the second input of which is connected to the second base of the single-junction transistor and through contact of the switch with the second terminal of the second capacitor, while the make contact of the switch is connected to the first terminal of the load, and the zener diode is connected in parallel with the second capacitor.

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

Устройство для прерывания цепи содержит тиристор 1, блок 2 управления включением тиристора, состоящий из первого 3 и второго 4 резисторов, первого конденсатора 5 и однопереходного транзистора 6, приемник 7 сигнала, нагрузку 8, блок 9 начального,запуска, источник 10 питания, второй конденсатор 11, стабилитрон 12 и переключатель 13.The device for interrupting the circuit contains a thyristor 1, a thyristor on-board control unit 2, consisting of the first 3 and second 4 resistors, the first capacitor 5 and the single-junction transistor 6, the signal receiver 7, the load 8, the initial, start-up block 9, the power supply 10, the second capacitor 11, zener diode 12 and switch 13.

Устройство для прерывания цепи работает следующим образом.A device for interrupting a circuit operates as follows.

Тиристор 1 приводится в исходное открытое состояние блоком 9.Thyristor 1 is brought to the initial open state by block 9.

В исходном состоянии тиристор 1 открыт, второй конденсатор 11 разряжен, переключатель 13 находится в указанном на чертеже положении. Цепь тока образована последовательно соединенными источником 10, приемником 7, нагрузкой 8 и открытым тиристором 1. При срабатывании переключателя 13 второй конденсатор 11 шунтирует цепь тока тиристора 1, который, выключаясь, разрывает цепь тока через нагрузку 8, и ток теперь проходит черев переключатель 13 и после заряда второго конденсатора 11через стабилитрон 12. Процесс заряда второго конденсатора 11 при соответствующих значениях емкости второго конденсатора 11 и Сопротивлений приемника 7 и нагрузки 8 протекает в течение времени кратковременного замыкания контакт тов переключателя 13.In the initial state, the thyristor 1 is open, the second capacitor 11 is discharged, the switch 13 is in the position indicated in the drawing. The current circuit is formed by series-connected source 10, receiver 7, load 8 and open thyristor 1. When the switch 13 is activated, the second capacitor 11 shunts the current circuit of thyristor 1, which, turning off, breaks the current circuit through load 8, and the current now passes through switch 13 and after charging the second capacitor 11 through the zener diode 12. The process of charging the second capacitor 11 with the corresponding values of the capacitance of the second capacitor 11 and the Resistance of the receiver 7 and load 8 proceeds for a short time contact closure switch 13.

При возврате контактов переключателя 13 в исходное состояние разрывается цепь тока через линию свяви и черев приемник 7, в то же время напряжение с второго конденсатора 11 подается на блок 2. Через интервал времени, определяемый блоком 2, с него выдается импульс напряжения включения на тиристор 1, который, ’ открываюсь, замыкает цепь тока на нагрузку 8. Устройство приходит в исходное состояние после полного разряда второго конденсатора 11 на блок 2 через нормально замкнутые контакты переключателя 13.When the contacts of the switch 13 return to their initial state, the current circuit breaks through the connection line and through the receiver 7, at the same time, the voltage from the second capacitor 11 is supplied to block 2. After a time interval determined by block 2, an on-pulse voltage pulse is output to thyristor 1 , which, “opens, closes the current circuit to load 8. The device comes to its original state after the second capacitor 11 is completely discharged to block 2 through the normally closed contacts of switch 13.

В блоке 2 при подаче напряжения первый конденсатор 5 начинает ааряжаться черев второй резистор 4.. При достижении на первом конденсаторе 5 напряжения включения однопереходного транзистора 6 последний, открываясь, пропускает через свой р—И переходток разряда первого конденсатора 5 на первый резистор 3 и на управляющий переход тирис10 тора 1, подключенный параллельно первому резистору 3. Проходящий черев управляющий электрод ток включает тиристор 1.In block 2, when a voltage is applied, the first capacitor 5 starts to charge through the second resistor 4 .. When the voltage on the first capacitor 5 reaches the turn-on voltage of the single-junction transistor 6, the last, opening, passes through its p — And the discharge transition of the first capacitor 5 to the first resistor 3 and to the control the transition of thyristor 10 of torus 1, connected in parallel with the first resistor 3. The current passing through the control electrode includes thyristor 1.

Claims

The invention relates to radio. Ke n can be used in subscriber telephone devices for normalized interruption of the loop. A device for interrupting a circuit is known, comprising first and second resistors, first and second capacitors, a thyristor, a zener diode, a switch, and a power source, the positive terminal of which is connected to the first signal receiver terminal, the second terminal of which is connected to the first load terminal. the terminal of which is connected to the thyristor anode, with it the first pins of the first and second coders, and the first pins of the first resistor are connected to the cathode of the thyristor 1. However, the known device fails chnostyu. The purpose of the invention is to increase the accuracy of the circuit interruption. For WTO, a circuit breaker device comprising first and second resistors, first and second; capacitors, thyristor; - zener diode, a switch, as well as a power source, the positive pole of which is connected to the first terminal of the signal receiver, the second terminal of which is connected to the first kagruaki terminal, the second "lemma of which is connected to the thyristor anode, with the first pins of the first and second capacitors as well as the first terminal of the first resistor is connected to the thyristor cathode, a start-up block is inserted, the first terminal of which is connected to the first load terminal, and the second terminal of the start-up block is connected to the control A thyristor control electrode, the second terminal of the first resistor is connected to the thyristor control electrode and the first base of the entered unijunction transistor, the emitter of which is connected to the second pin of the first capacitor and the first pin of the second resistor, the second pin of which is connected to the second base of the unijunction transistor and through rve a switching contact of the switch with the second output of the second capacitor, while the closing contact of the switch is connected to the first load terminal and the zener diode is connected in parallel to v rum capacitor. The drawing shows a structural electrical circuit of the proposed device. The device for interrupting the circuit contains a thyristor 1, a thyristor turn-on control unit 2 consisting of the first 3 and second 4 resistors, the first capacitor 5 and the single junction transistor 6, the signal receiver 7, the load 8, the initial startup block 9, the power supply 10, the second the capacitor 11, the zener diode 12 and the switch 13. The device for interrupting the circuit operates as follows. The thyristor 1 is reset to the initial open state by the block 9. In the initial state, the thyristor 1 is open, the second capacitor 11 is discharged, the switch 13 is in the position indicated on the drawing. The current circuit is formed by the series-connected source 10, receiver 7, load 8 and open thyristor 1. When the switch 13 is triggered, the second capacitor 11 shunts the current circuit of the thyristor 1, which, when turned off, breaks the circuit through the load 8, and the current now passes through switch 13 and after charging the second capacitor 11 through the zener diode 12. The process of charging the second capacitor 11 with the corresponding values of the capacitance of the second capacitor 11 and the Resistances of the receiver 7 and the load 8 takes place during a short time contac comrade alternating closing switch 13. When switch contacts 13 return to the initial state of the current circuit is broken through the communication line and via at emnik 7, at the same time with the voltage of the second capacitor 11 is supplied to blo

2. At the time interval determined by block 2, a pulse of switching voltage is output from it to thyristor 1, which. opened, closes the circuit on the narrauca 8. The device comes to the depletion state after the full discharge of the second, 5 capacitor 11 to blszh 2 through the normally closed switch-contacts. bodies 13. In block 2, when the voltage is applied, the first capacitor 5 begins to charge through the second resistor 4. When the first capacitor 5 reaches the same voltage, the single transistor 6 is turned on, the last one opens through its p-j junction of the first capacitor 5 to the first resistor 3 and to the thyristor 1 control junction connected in parallel with the first resistor

3. A current passing through a control electrode includes a thyristor 1. Claims An circuit interruption device comprising first and second resistors, first and second capacitors, a thyristor, a zener diode, a switch, and a power source, the positive pole of which is connected to the first terminal of the receiver the signal, the second terminal of which is connected to the first terminal of the load, the second terminal of which is connected to the anode of the thyristor, with the first terminals of the first and second capacitors, as well as the first terminal of the first resistor with a thyristor cathode, characterized in that, in order to improve circuit interruption accuracy, an initial startup unit is inserted in it, the first terminal of which is connected to the first load terminal, and the second terminal of the initial startup unit is connected to the thyristor control electrode, the second terminal of the first resistor connected to the control electrode of the thyristor and the first base of the inserted unijunction transistor, whose emitter is connected to the second terminal of the first capacitor and the first terminal of the second resistor, the second terminal of which is co Inonii with the second base unijunction tran ican .i chereva break contact switch to a second terminal of the second capacitor ,, wherein the closure yuschy contact switch connected to the first terminal of the load, and a zener diode connected in parallel to a second kondensaIstochniki information. into account in the examination 1. The patent of Germany Ns 2432454, cl. H 03 K 17/72, published 1976 (prototype).