SU894763A1

SU894763A1 - Device for control of pulse gas-discharge lamps

Info

Publication number: SU894763A1
Application number: SU802930901A
Authority: SU
Inventors: Николай Васильевич Акимов; Владимир Юрьевич Дубровка; Нина Леонидовна Иванова; Александр Борисович Калачов; Александр Иванович Кудинов; Юрий Александрович Кузьмин; Николай Федорович Макокин; Абдразан Морданович Мирзабеков; Виктор Егорович Панюшкин; Леонид Владимирович Родионов; Георгий Николаевич Сенилов
Original assignee: Московский Ордена Ленина Энергетический Институт
Priority date: 1980-04-25
Filing date: 1980-04-25
Publication date: 1981-12-30

Description

Изобретение относится к автоматике.The invention relates to automation.

Известно устройство для световой сигнализации, содержащее импульсную лампу, соединенную со вторичной обмоткой импульсного трансформатора, и источник питания, соединенный с первичной обмоткой импульсного трансформатора через контакты реле [Ϊ].A device for light signaling is known comprising a flash lamp connected to a secondary winding of a pulse transformer, and a power source connected to a primary winding of a pulse transformer via relay contacts [Ϊ].

Недостаток данного устройства низкая надежность, обусловленная наличием контактов реле. ¹ The disadvantage of this device is low reliability due to the presence of relay contacts. ¹

Наиболее близким является устройство для управления импульсными газоразрядными лампами, содержащее умножитель напряжения, подключенный к газоразрядным лампам, управляющие электроды которых соединены со вторичными обмотками импульсных трансформаторов, и мультивибратор, выходы которого подключены к управляющим электродам тиристоров, соединенных с умножителем напряжения и подключенных через конденсаторы к первичным обмоткам импульсных трансформаторов Г2].The closest is a device for controlling pulsed discharge lamps, containing a voltage multiplier connected to discharge lamps, the control electrodes of which are connected to the secondary windings of pulse transformers, and a multivibrator, the outputs of which are connected to the control electrodes of the thyristors connected to the voltage multiplier and connected through the capacitors to the primary windings of pulse transformers G2].

Известное устройство не обеспечивает необходимой надежности в работе, так как в нем возможен выход из строя тиристоров от мощных помех и наводок напряжения в соединительных проводах между лампами и блоком питания;The known device does not provide the necessary reliability in operation, since it is possible for thyristors to fail due to powerful interference and voltage pickups in the connecting wires between the lamps and the power supply;

Цель изобретения - повышение надежности устройства.The purpose of the invention is to increase the reliability of the device.

Поставленная цель достигается тем, что в устройство введены оптроны, ограничительные диоды, фильтры и делители напряжения, выходы мультивибратора соединены соответственно с.первыми 'входами оптронов, другие входы которых соединены с соответствующими конденсаторами, а выходы оптронов подключены к управляющим электродам тиристоров, третий выход умножителя напряжения соединен со входами фильтров, выход первого фильтра подключен через'соответствующие делители напряжения к конденсаторам, выходы других фильтров соединены через одни диоды с другими диодами, которые подключены параллельно фильтрам в обратном направлении и через тиристоры подключены к первичным обмоткам импульсных трансформаторов.This goal is achieved by the fact that optocouplers, limiting diodes, filters and voltage dividers are introduced into the device, the outputs of the multivibrator are connected respectively to the first 'inputs of the optocouplers, the other inputs of which are connected to the corresponding capacitors, and the outputs of the optocouplers are connected to the control electrodes of the thyristors, the third output of the multiplier voltage is connected to the inputs of the filters, the output of the first filter is connected through the corresponding voltage dividers to the capacitors, the outputs of the other filters are connected through one diode s with other diodes that are connected in parallel to the filters in the opposite direction and through the thyristors are connected to the primary windings of pulse transformers.

На чертеже представлена электрическая принципиальная схема устройства.The drawing shows an electrical schematic diagram of a device.

Устройство содержит газоразрядные лампы 1 и 2, основной накопительный конденсатор 3, умножитель напряжения, .состоящий из накопительных конденсаторов 4 - 9 и выпрямительных диодов 10 - 15, мультивибратор, собранный на транзисторах 16 и 17, тиристоры 18 и 19, оптроны 20 и 21, делители напряжения, состоящие из резисторов 22 и 23, резисторов 24 и 25, конденсаторов 26 и 27 , ограничительные диоды 28 и 29, конденсаторы 30 и 31 поджига, импульсные трансформаторы 32 и 33, ограничительные диоды 34 и 35 и фильтры, состоящие из конденсаторов 36 - 38, диода 39, резисторов 40 и 41, диода 42, резистора 43 и конденсатора 44.The device contains gas discharge lamps 1 and 2, a main storage capacitor 3, a voltage multiplier consisting of storage capacitors 4 to 9 and rectifier diodes 10 to 15, a multivibrator assembled on transistors 16 and 17, thyristors 18 and 19, optocouplers 20 and 21, voltage dividers consisting of resistors 22 and 23, resistors 24 and 25, capacitors 26 and 27, limit diodes 28 and 29, ignition capacitors 30 and 31, pulse transformers 32 and 33, limit diodes 34 and 35 and filters consisting of capacitors 36 - 38, diode 39, resistors 40 and 41, diode 42, re stories 43 and capacitor 44.

Предлагаемое устройство работает следующим образом.The proposed device operates as follows.

Заряд конденсатора 37 осуществляется по цепи плюс диода 11, диод 39, резистор АО, конденсатор 37, минус диода 10. Аналогично осуществляется заряд конденсатора 38 по цепи плюс диода 11, диод 42, резистор 43, конденсатор 38, минус диода 10. При разрядах основного конденсатора 3 на лампы 1 и 2 могут иметь место значительные падения напряжения (порядка сотен вольт), на плюсовых и минусовых проводах разъемов 30 и 31, соединяющих лампы 1 и 2 с умножителем напряжения. По существующим условиям эксплуатации в авиации минусовой провод является общим для цепей управления импульсными трансформаторами 32 и 33· Поэтому для исключения попадания упомянутых падений напряжения на тиристоры 18 и 19 последовательно с ними включены ограничительные диоды 28 и 29· Цепь зажигания лампы 2 состоит из конденсатора 37, ограничительного диода 28, тиристора 19, разъемов 30 и. 31 , и импульсного трансформатора 33. Конденсатор 36 является фильтром диода 39Для защиты тиристоров от пробоя они устанавливаются в обратной полярности и защищаются диодами.The capacitor 37 is charged along the circuit plus the diode 11, diode 39, resistor AO, the capacitor 37, minus the diode 10. Similarly, the capacitor 38 is charged along the circuit plus the diode 11, diode 42, resistor 43, the capacitor 38, minus the diode 10. When discharging the main of the capacitor 3 to lamps 1 and 2, significant voltage drops (of the order of hundreds of volts) can occur on the plus and minus wires of the connectors 30 and 31 connecting the lamps 1 and 2 with a voltage multiplier. According to the existing operating conditions in aviation, the negative wire is common for control circuits of pulse transformers 32 and 33 · Therefore, to prevent the mentioned voltage drops from reaching thyristors 18 and 19, limiting diodes 28 and 29 are connected in series with them. The ignition circuit of lamp 2 consists of a capacitor 37, limiting diode 28, thyristor 19, connectors 30 and. 31, and a pulse transformer 33. The capacitor 36 is a filter of the diode 39. To protect the thyristors from breakdown, they are installed in reverse polarity and protected by diodes.

Однако при обратной полярности тиристоров и при наличии сигнала управления мультивибратора относительно общего минуса с умножителя напряжения обе первичные обмотки трансформаторов соединены вместе, т.е. нет поочередной работы ламп. Следовательно, тиристоры в этом случае могут управляться от мультивибратора только взаимно изолированными сигналами. Такая изоляция сигналов обеспечивается с помощью оптронов 20 и 21.However, with the reverse polarity of the thyristors and in the presence of a multivibrator control signal with respect to the total minus from the voltage multiplier, both primary transformer windings are connected together, i.e. there is no alternate lamp operation. Therefore, the thyristors in this case can be controlled from the multivibrator only by mutually isolated signals. Such signal isolation is provided using optocouplers 20 and 21.

Аналогично работает схема и при поджигании лампы 1.The circuit works similarly when the lamp 1 is ignited.

Claims

The invention relates to automatics. A device for light signaling is known, which contains a flash lamp connected to the secondary winding of a pulse transformer and a power source connected to the primary winding of a pulse transformer through the PZ relay contacts. The disadvantage of this device is low reliability due to the presence of relay contacts. The closest is a device for controlling pulsed gas-discharge lamps, containing a voltage multiplier connected to gas-discharge lamps, the control electrodes of which are connected to the secondary windings of the pulse transformers, and a multivibrator, the outputs of which are connected to the control electrodes of the thyristors connected to a voltage multiplier and connected through capacitors to the primary windings of pulse transformers G2. The known device does not provide the necessary reliability in operation, since it is possible for the thyristors to fail from powerful interference and voltage interference in the connecting wires between the lamps and the power supply unit; The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that optocouplers, limiting diodes, filters and voltage dividers are introduced into the device, the outputs of the multivibrator are connected respectively to the first inputs of the optocouplers, the other inputs of which are connected to the corresponding capacitors, and the outputs of the optocouplers are connected to the control electrodes of the thyristors, the third output The voltage multiplier is connected to the filter inputs, the output of the first filter is connected through the corresponding voltage dividers to the capacitors, the outputs of the other filters are connected through one The diodes with other diodes, which are connected parallel to the filters in the reverse direction and are connected via thyristors to the primary windings of the pulse transformers. The drawing shows an electrical schematic diagram of the device. The device comprises gas-discharge lamps 1 and 2, a main storage capacitor 3, a voltage multiplier consisting of storage capacitors - 9 and rectifying diodes 10 - 15, a multivibrator assembled on transistors 16 and 17, thyristors 18 and 19. Optocouplers 20 and 21, voltage dividers consisting of resistors 22 and 23, resistors 2 and 25, capacitors 26 and 27, limiting diodes 28 and 29, ignition capacitors 30 and 31, pulse transformers 32 and 33, restrictive diodes 3 and 35 and fil ry consisting of the capacitors 36 - PO, diode 39, resistors; AO and il, diode k2, resistor and capacitor CH 4 The proposed device operates as follows. The capacitor 37 is charged along the circuit plus diode 11, diode 39, resistor 0, capacitor 37 minus diode 10, likewise carried out for row capacitor 38 along circuit plus diode 11, diode 2, resistor FROM, capacitor 38, minus diode 10 When discharging the main capacitor 3 to the lamps 1 and 2 there can be significant voltage drops (of the order of hundreds of volts), on the positive and negative wires of the connectors 30 and 31 connecting the lamps 1 and 2 with a voltage multiplier. Under current conditions of operation in aviation, the negative conductors are common for the control circuits of tt 32 and 33 pulse transmitters. Therefore, to prevent the occurrence of the mentioned voltage drops on the thyristors 18 and 19 in series with them, limiting diodes 28 and 29 are connected. 2 consists of a capacitor 37, a limiting diode 28, a thyristor 19, connectors 30 and. 31 and a pulse transformer 33. The capacitor B3 is a filter diode 39 In order to protect the thyristors from breakdown, they are installed in reverse polarity and protected by diodes. However, with the reverse polarity of the thyristors and the presence of the control signal of the multivibrator relative to the common minus of the voltage multiplier, the two primary windings of the transformers are connected together, i.e. no alternate lamp operation. Consequently, the thyristors in this case can be controlled from the multivibrator only by mutually isolated signals. This isolation of signals is provided by optocouplers 20 and 21. The circuit works similarly when the lamp 1 is ignited. Invention device for controlling pulsed gas discharge lamps containing a voltage multiplier, one output of which is connected to gas discharge lamps whose control electrodes connected to the secondary windings of pulse transformers, a multivibrator, the power circuit of which is connected to another output of a voltage multiplier, thyristors and capacitors, characterized in that, in order to increase negligence of the device, optocouplers, limiting diodes, filters and voltage dividers are introduced into it, the outputs of the multivibrator are connected respectively to the first inputs of the optocouplers, the other inputs of which are connected to the corresponding (capacitors, and the outputs of the optocouplers are connected to the control panel and the thyristors, the third output The voltage is connected to the inputs of the filters, the output of the first filter is connected through appropriate voltage dividers to the capacitors, the outputs of the other filters are connected through one limit switch ode with drugikm suppressor diodes, which are connected in parallel with the filters in the reverse direction and through the thyristors connected to the primary windings of the pulse transformers. Sources of information taken into account in the examination 1, USSR Author's Certificate No. 385303, G 08 B 5/38, 1971. 2, USSR Author Certificate W 288596, G 08 B 5/36, 1969 (prototype).