SU651330A1

SU651330A1 - Dc voltage supply source for radio electronic complex

Info

Publication number: SU651330A1
Application number: SU772444996A
Authority: SU
Inventors: Валериан Николаевич Скачко
Original assignee: Предприятие П/Я Р-6891
Priority date: 1977-01-10
Filing date: 1977-01-10
Publication date: 1979-03-05

Description

тор срабатывает и через его контакты замыкаетс цепь первичного питани блоков питани и датчиков блока защиты. Напр жени с выходов блока питани поступают на питаемую аппаратуру и датчики защиты. Сигнал «1 с чеек включени поступает также на вход реле времени, которое через чейку включени защиты выдает сигнал включени на датчики защиты с задержкой на врем входа блока питани в номинальный режим .The torus triggers and, through its contacts, closes the primary supply circuit of the power supply units and the sensors of the protection unit. The voltages from the outputs of the power supply unit are fed to the powered equipment and protection sensors. The signal "1" of the switch-on cells also goes to the input of the time relay, which, through the switch-on cell of the protection, sends a turn-on signal to the protection sensors with a delay for the time of the power supply unit entering the nominal mode.

В случае, если напр жение какого-либо блока питани отклонитс от номинального значени в большую или меньшую Сторону до порога срабатывани датчика защиты,In case the voltage of any power supply unit deviates from the nominal value to a higher or lower side, up to the threshold of the protection sensor,

контролирующего этот блок питани , датчик защиты выдает сигнал аварии на электрическую лампочку контролируемого им блок а питани и на чейку прин ти аварии блока управлени . control of this power supply unit, the protection sensor generates an alarm signal to the electric light of the power supply unit it controls and to the control unit receiving alarm cell.

На выходе чейки прин ти аварии по вл етс сигнал «1, который одновременно подаетс на входы чейки аварийного смещени , усилител сигнала аварии, а также на запрещающий вход усилител включени контактора. В результате этого загораютс лампочки индикации аварии, подключенные к выходу усилител сигнала аварии, выключаетс контактор, а от чейки аварийного смещени на датчики защиты поступает сигнал , запрещающий их работу. Этим обеспечиваетс исключение ложной индикации аварии электрическими лампочками исправных блоков питани , выходное напр жение которых при выключении контактора, уменьща сь до нул , становитс меньщим порогов срабатывани по минимальному пределудатчиков защиты, что может вызвать их срабатывание.At the output of the alarm receiving cell, a signal "1" appears, which simultaneously is fed to the inputs of the emergency displacement cell, the alarm signal amplifier, and the inhibiting input of the contactor switching amplifier. As a result, the alarm indication lamps, connected to the output of the alarm signal amplifier, turn on, the contactor is turned off, and a signal prohibits their operation from the emergency displacement cell to the protection sensors. This provides the elimination of false indication of the accident by electric lights of serviceable power supply units, the output voltage of which, when the contactor is turned off, decreasing to zero, becomes less than the tripping thresholds on the minimum limit sensors of protection, which may cause them to trip.

Таким образом происходит отключение всех блоков питани , если выходное напр жение одного из них отклонитс за заданные Пределы, т. е. осуществл етс группова защита . При этом производитс также светова индикаци случивщейс неисправности (аварии) и указание того блока питани , который отказал.Thus, all power supply units are disconnected if the output voltage of one of them deviates beyond the specified Limits, i.e., group protection is implemented. This also produces light indications of a malfunction (accident) and an indication of the power supply unit that failed.

То обсто тельство, что при отказе одного из блоков питани выключаютс все остальные , не во всех случа х приемлемо, иногда требуетс выключение только отказавщего блока - автономна защита. Автономна защита необходима, например, в случае применени дублировани блоков питани , когда из группы задублированных блоков питаНйЯдолжен выключитьс только отКазавщий , а остальные должны продолжать питание аппаратуры. В прототипе осуществить автономную защиту невозможно, так как сигналы аварии от всехдатчиков защиты свод тс на одну и ту же чейку прин ти The fact that if one of the power supply units fails, all the others are turned off, not in all cases acceptable, sometimes it is necessary to turn off only the failing unit — autonomous protection. Autonomous protection is necessary, for example, in the case of duplication of power supply units, when from the group of duplicated power supply units, only the replacing power supply unit must be turned off, and the rest must continue to power the equipment. In the prototype, it is impossible to carry out autonomous protection, since the accident signals from all protection sensors are reduced to the same receive cell.

аварии; последн при срабатывании любого датчика выдает сигнал на запрещающийaccidents; Last when any sensor is triggered, it sends a signal to prohibit

ВХОД усилител включени контактора, а выход этого усилител св зан с обмоткой контактора , общего дл всех блоков питани и датчиков защиты.The input of the contactor switching amplifier, and the output of this amplifier is connected to the contactor winding common to all power supplies and protection sensors.

Обеспечение в известном устройстве только групповой защиты вл етс его неДостатком . Кроме того, недостатком вл етс невозможность обеспечени изол ции между выходами блоков питани , так как они св заны через датчики защиты, чейки прин ти аварии и аварийного смещени , и одновременное включение или выключение (со стороны чеек включени ) всех блоков питани в то врем , как при включении или вьщлючении некоторых радиоэлектронных комплексов требуетс последовательное включение или соотвественно выключение различных блоков питани в заданной,последовательности .Providing only group protection in a known device is not a Disadvantage. In addition, the disadvantage is that it is impossible to provide isolation between the outputs of the power supply units, since they are connected via protection sensors, alarm reception cells and emergency displacement, and simultaneously turning on or off all power supply units from the on cells, As with the on or off of some radio-electronic complexes, it is necessary to turn on or on to switch off various power supply units in sequence, in sequence.

Целью изобретени вл етс расщирение функциональных возможностей защиты, обеспечение программного включени и выключени вторичных стабилизированных блоков питани и обеспечение изол ции между выходами блоков питани .The aim of the invention is to extend the functionality of the protection, to provide software switching on and off of the secondary stabilized power supply units and to provide isolation between the outputs of the power supply units.

Поставленна цель достигаетс тем, чти в устройстве электропитани посто нного напр жени дл радиоэлектронного комплекса блок автоматического управлени выполнен по меньщей мере из двух аналогичных дл каждого вторичного ст,абилизированного блока питани и датчика защиты секций, кажда из которых собрана на двух транзисторах и трехтиристорыхоптронах, у которых светодиод первого оптрона подключен к выходу датчика защиты через первый резистор, светодиод второго оптрона и тиристор первогоThe goal is achieved by the fact that in the DC power supply device for the electronic complex the automatic control unit is made at least of two similar for each secondary station, an abilized power supply unit and a protection sensor for the sections, each of which is assembled on two transistors and three-triacrytocopters which the LED of the first optocoupler is connected to the output of the protection sensor via the first resistor, the LED of the second optocoupler and the thyristor of the first

совместно со вторым резистором образуют последовательную цепочку, подсоединенную к источнику питани , тиристор второго оптрона подключен к щине источника питани , к которой подсоединены светодиод этого оптрона , коллектор первого транзистора, обща точка входов вторичных стабилизированных блоков питани и тиристор третьего оптрона , второй конец тиристора второго оптрона одновременно подсоединен через Два последовательно включенных разв зывающих диода защиты к управл ющему входу вторичного стабйлизированного блока питани и через третий резистор - к базе первого транзистора , соединенной, кроме того, через разв зывающий диод индикации с коллектором второго транзистора, база которого черезtogether with the second resistor form a series circuit connected to a power source, the thyristor of the second optocoupler is connected to the power supply terminal to which the LED of this optocoupler is connected, the collector of the first transistor, the common inputs of the secondary stabilized power supply units and the thyristor of the third optocoupler, the second end of the second optocoupler thyristor simultaneously connected via two series-connected protection diodes to the control input of the secondary stabilized power supply unit and ithout third resistor - to the base of the first transistor is connected, in addition, through the indicating decoupling diode to the collector of the second transistor, whose base through

четвертый резистор св зана с элементом индикации и вторым выводом тиристора третьего оптрона, эмиттер первого транзистора через светодиод третьего оптрона и п тый резистор подключен к противоположной щине источника питани , соединенной, кроме того, с эмиттером второго транзистора, а обща точка тиристора первого и светодиода второго оптронов, как и управл ющийthe fourth resistor is connected to the display element and the second output of the third optocoupler thyristor, the emitter of the first transistor through the third optocoupler LED, and the fifth resistor are connected to the opposite side of the power supply connected to the emitter of the second transistor, and the common point of the first and second LEDs optocouplers, as well as managing

вход вторичного стабилизированного блока питани , через схему ИЛИ на двух диодах соединены с выходами чеек местного и внешнего включени , с которыми св зан также, управл ющий вход реле времени, выход которого соединен с разрешающими входами всех датчиков защиты, причем общие точки каждого из двух последовательно включенных разв зывающих диодов защиты и выводы разв зывающих диодов индикации, св занные с коллекторами транзисторов всех секций блока автоматического управлени , соедин ютс между собой двум различными щинами, кроме того, реле времени выполнено в виде отдельных узлов реле времени дл каждого из указанных блоков, выход каждого из которых соединен с разр ещающим входом соответствующего датчика защиты , причем управл ющий вход каждого вторичного стабилизированного блока питани и соответствующего узла реле времени вместе с общей точкой тиристора первого и светодиода второго оптронов через соответ. ствующую дополнительно введенную схему ИЛИ на трех диодах подключены к относ щемус к данной секции блока автоматического управлени выходу программного блока, состо щего из двух по числу указанных блоков питани ключей, каждый из которых включен между одним из выходов блока автоматического управлени и щиной источника пйтаБи , соединенной с общей точкой выходов вторичных стабилизированных блоков питани , а выходы чеек местного и внещнего включени через дополнительно введенные диоды св заны с общими точками диодов схем ИЛИ каждой секции блока автоматического управлени , причем в каждую секцию блока автоматического управлени введен оптронный диод, фотодиод которого подключен к управл ющему входу указанного блока питани , а светодиод оптронного диода последовательно с резистором образуют цепочку, один конец которой подключен к общей точке разв зывающего диода з.ащиты и диода схемы ИЛИ, а второй - к щине источника питани , св занной с эмиттером второго транзистора.the input of the secondary stabilized power supply unit, through the OR circuit on two diodes, is connected to the outputs of the local and external switching cells, to which the control input of the time relay, the output of which is connected to the enabling inputs of all protection sensors, is also connected, the common points of each of two the connected protection diodes and the outputs of the indicating indication diodes connected to the collectors of the transistors of all sections of the automatic control unit are interconnected in two different ways besides oh, the time relay is made as separate time relay nodes for each of these blocks, the output of each of which is connected to the disabling input of the corresponding protection sensor, the control input of each secondary stabilized power supply unit and the corresponding time relay node along with the common point of the thyristor of the first and the LED of the second optocouplers respectively. An additionally introduced circuit OR on three diodes is connected to a section of this automatic control unit, the output of a program block consisting of two by the number of specified key supply units, each of which is connected between one of the outputs of the automatic control unit and the power source of the power supply unit connected with a common point of output of the secondary stabilized power supply units, and the outputs of the local and external switching cells through the additionally introduced diodes are connected with the common points of the diodes of the circuits OR each This section of the automatic control unit, in each section of the automatic control unit, an optocoupler diode is inserted, the photodiode of which is connected to the control input of the specified power supply unit, and the diode of the optocoupler diode in series with a resistor form a chain, one end of which is connected to the common point of the decoupling diode 3. The shield and diode of the OR circuit, and the second to the power supply terminal connected to the emitter of the second transistor.

На фиг. 1 схематично представлено устройство электропитани посто нного напр жени дл радиоэлектронного комплекса, с реализацией групповой или автономной защиты; на фиг. 2 - то же, с обеспечением программного включени и выключени блоков питани со стороны программного блока; на фиг. 3 - то же с изол цией между выходами блоков питани .FIG. Figure 1 shows schematically a power supply device for direct voltage for an electronic complex with the implementation of group or autonomous protection; in fig. 2 - the same, with software for switching the power supply units on and off from the program unit side; in fig. 3 is the same with insulation between the outputs of the power supply units.

Устройство содержит по меньщей мере два, имеющих по выходам общую точку вторичных стабилизированных блока l иThe device contains at least two, having on outputs a common point of the secondary stabilized block l and

1питани , к выходу каждого из которых подключен соответствующий датчик 2 или1 power, to the output of each of which is connected the corresponding sensor 2 or

2защиты, реле 3 и 3 времени, чейки местного 4 и внешнего 5 включени , источник 6 питани , блок 7 автоматического управлени , выполненный из по меньщей мере двух аналогичных секций 8 и 9, кажда из которых собрана на транзисторах 10, 11 и 10 1Г и оптронах .121, i2 131, 13 , 14 и 14 причем светодиод оптрона 12 или 12 подключен к выходу датчика 2 или 2 защиты, через резистор 15 или , светодиод оптрона 13 или тиристор оптрона 12 или 12 совместно с резистором 16 или 1 б образуют последовательную цепочку, подключенную к источнику 6 питани , второй конец тиристора оптрона 13 или 13 одновременно подключен через последовательно включенные разв Зывающие диоды 17, 17 и 18, 18 защиты к2 protection, relays 3 and 3 times, local 4 and external 5 switching cells, power supply 6, automatic control unit 7, made of at least two similar sections 8 and 9, each of which is assembled with transistors 10, 11 and 10 1Г and Optocouplers .121, i2 131, 13, 14, and 14 wherein the LED of the optocoupler 12 or 12 is connected to the output of the sensor 2 or 2 of the protection, through the resistor 15 or the LED of the optocoupler 13 or the thyristor of the optocoupler 12 or 12 together with the resistor 16 or 1 b form a serial the chain connected to the power source 6, the second end of the thyristor of the optocoupler 13 or 1 3 is simultaneously connected via series-connected development diodes 17, 17 and 18, 18 protection to

управл ющему входу вторичного стабилизированного блока 1 или 1 питани и через резистор 19 или 19 - к базе транзистора 10 или , соединенной, кроме того, через разв зывающий диод 20 или индикации с коллектором транзистора 11 или 11 ,a control input of the secondary stabilized power supply unit 1 or 1 and through a resistor 19 or 19 to the base of the transistor 10 or, connected, in addition, through an isolating diode 20 or indication to the collector of transistor 11 or 11,

база которого через резистор 21 или 21 соединена элементом 22 или 22 индикации, эмиттер транзистора 10 или через светодиод оптрона 14 или 14 и резистор 23 или 23 подключен к шине источника 6 питани , обща точка тиристора оптрона 12 или 12 и светодиода оптрона 13 или 13 и управл ющий вход вторичного стабилизированного блока питани через схему ИЛИ на диодах 24, и 25, соединены с выходами чеек местного 4 и внещнего 5the base of which through the resistor 21 or 21 is connected by the display element 22 or 22, the emitter of the transistor 10 or through the LED of the optocoupler 14 or 14 and the resistor 23 or 23 is connected to the bus of the power supply 6, the common point of the thyristor of the optocoupler 12 or 12 and the LED of the optocoupler 13 or 13 and the control input of the secondary stabilized power supply is connected via OR circuit to diodes 24, and 25 to the outputs of the local 4 and external 5 cells

0 включени , кроме того, устройство содержит дополнительную схему ИЛИ из указанных диодов 24, и 25, и диода 26. или 26 (фиг. 2), программный блок, состо щий из ключей 27 и , каждый из которых включен между одним из выходов бло5 ка автоматического управлени и шиной источника 6 питани , а выходы чеек местного 4 и внешнего 5 включени через диоды 28 и 28 соединены с общими точками диодов схем ИЛИ каждой секции блока автоматического управлени , оптронный диод 29 или 29, фотодиод которого подключен к управл ющему входу блока 1 или питани , а светодиод оптронного диода последовательно с резистором 30 или образуют цепочку, один конец которой подключен к0, in addition, the device contains an additional OR circuit from the indicated diodes 24, and 25, and diode 26. or 26 (Fig. 2), a program block consisting of keys 27 and each of which is connected between one of the outputs of the block The automatic control and bus power supply 6, and the outputs of the local 4 and external switching 5 cells through diodes 28 and 28 are connected to common points of the OR circuit diodes of each section of the automatic control unit, an optocoupler diode 29 or 29, the photodiode of which is connected to the control input of the unit 1 or power, and the LED optocoupler diode in series with resistor 30 or form a chain, one end of which is connected to

5 общей точке разв зывающего диода 18 или защиты и диода 25 или 25 схемы ИЛИ, а другой - к щине источника питани , соединенной с эмиттером транзистора 11 или 11.5 to the common point of the isolation diode 18 or the protection and the diode 25 or 25 of the OR circuit, and the other to the power supply terminal connected to the emitter of the transistor 11 or 11.

Claims

With the formation of group protection, as shown in FIG. 1-3, the common points of the isolation diodes 17 or 17 of the protection and the diodes 18 or 18 of the circuits OR A and A are interconnected by a bus. Also, 55 are interconnected, but by a different bus, common points of the disconnecting diodes 20 and 20 of the display and collectors of the transistors 11 and 11 are points B and B if it is necessary for any unit; Since the power supply operated in the autonomous protection mode, points A and B of the section of the automatic control unit related to this power supply unit are not connected to the buses connecting the similar points of the other sections. In the case when all power units must operate in autonomous protection mode, all points A and A, B and B are not interconnected. The device works as follows. If, when the primary voltage is applied to the inputs of the secondary stabilized power supply units 1 and l and the power supply source 6 intended for powering the automatic control unit of the time relay and switching cells, these cells 4 and 5 or the software block (Figs. 2, 3) do not flow the inhibit signal, the power supply units will immediately start working, and the relay 3 or 3 times, starting from the moment of supplying the primary voltage, will work out the activation delay of the protection sensors. In the power supply device for the electronic complex (Fig. 1), the delay is made at the time of output to the nominal mode of that power supply unit for which this process is the longest, and in the power supply device for the electronic complex (Fig. 2, 3). The delays of each of the relays 3 and 3 times are made individually in accordance with the output time to the nominal mode of the power supply unit to which it relates. In the case when a prohibit signal is received from one of the switch-on cells or from the program block when the primary power is applied to the inputs of the blocks 1 and power supply 6 and the power source 6, then the power blocks 1 and 1 and the time relay do not turn on, because: 1) the inputs of the power supply units 1 and 1 in the device for the electronic complex of FIG. 1 is short-circuited through the diodes 25 and 25 by the switch cells 4 and 5, in the device for the power supply of the radioelectronic complex of FIG. 2 - either by the contacts of the program block through diodes 25 and 25, or by switching cells through the same Diodes and Diodes 28 and 28, or finally, by photodiodes 19 and 29 optocouplers (Fig. 3), through the LEDs of which, if a prohibition signal is present, a current passes through the circuit : source 6 - diodes 25 and (and 28 and 28, if the prohibition proceeds from cells 4 and 5) - resistors 30 and 2) the control input of the time relay 3 will be short-circuited directly by cell 4 or 5, and in the power supply device for the radio electronic complex in FIG. The 2 or 3 control inputs of the relay 3 and 3 times will be short-circuited either by the keys 27 and 27 of the program block via diodes 26 and 26, or by cells 4 and 5 through the same diodes 26 and diodes 28 and. But if, in the future, the switching authority, which issued the prohibition of operation, removes it, then immediately the power supply units 1 and I will start to enter the nominal voltage mode, and the time relay will work out the protection activation delay. When a device fails during operation, leading to a voltage deviation of some of its power supply units, for example, the first one beyond the specified limits, the protection sensor 2 triggers, the LED of the optocoupler 12 illuminates its thyristor and along the circuit: source 6 - thyristor of the optocoupler 12 - LED the optocoupler 13 will pass a current causing the thyristor of the optocoupler 13 to turn on and short-circuited (in the power supply device for the electronic complex of Figs. 1 and 2) through the thyristor the decoupling diodes 17 and 18 of the control input of the power supply unit 1, ultate which the latter is turned off. In the power supply device for the electronic complex of FIG. 3, the control input is short-circuited by the photodiode 29 of the optocoupler through the LED of which and further along the circuit: the resistor 30, the diodes 17 and 18, and the thyristor of the optocoupler 13 will receive current. If the failed power supply unit 1 operates in group protection with other power supply units (their points A are connected), they are also switched off, as the thyristor of the optocoupler 13 decoupling diode 17 of section 8 of the automatic control unit 7 and the diodes 18 and 18 of other sections short-circuit them the control inputs are directly in the power supply device for the electronic complex (Fig. 1 and 2) and by means of optocoupler diodes 29 and 29 in the power supply device for the electronic complex (Fig. 3). The switching-on thyristor of the optocoupler 13, besides turning off the power supply units (the first and others working with it in group protection), through the resistor 19 will transmit the potential of its collector to the base of transistor 10 and this transistor will start to conduct current through the led of the optocoupler 14 and the resistor 23. The thyristor of the optocoupler 14 turns on and The display element 22 will start to operate (in this case, the light will come on), indicating the occurrence of the accident (and automatic shutdown) of the power supply unit, in this case the first one. If the indication of a common malfunction by a single bulb is also required, regardless of which power supply unit failed (as in the known device), then this device is easy to implement by collecting common anode points of the thyristors of optocouplers 14 and 14 and light bulbs through the diode circuit OR to the common element indications (light bulb). Electricity lamps may not necessarily be used as display elements, other elements, such as digital indicators, can be used to indicate the number of the failing power supply unit. In order to exclude the operation of the display elements connected to sections 8 and 9 of the automatic control unit 7 of other power supply units operating in group protection with a failing power supply unit and for this reason also turned off (false indication), resistors 21 are inserted into the automatic control unit and 21, the transistors 11 and 11 and the decoupling indication diodes 20 and 20, the common collector points of the transistors 11 and P and the diodes 20 and 20 (points B and) are interconnected. When the thyristor of the optocoupler 14 (here, as before, it is considered that the power supply unit 1 failed), the transistor 11, the base of which is connected through the resistor 21 to this thyristor, opens and enters the saturation mode and through the diodes 20 and 20 of those sections of the automatic control points B and B of which are interconnected, connect the bases of transistors 10 and 10 to the positive terminal of source 6 and the operation of these transistors will therefore become impossible, and therefore there will be no current through the LEDs of optocouplers 14 and 14 when the thyristors are turned on PTONs 13 and 13. Therefore, the thyristors of the optocouplers 14 and 14 of the automatic control unit section of the power supply units operating in the group protection, except those related to the failed power supply unit, are not included. The latter is explained by the fact that although the saturated transistor 11 will eliminate the current of the LED of the optocoupler 14, its thyristor will no longer need to be illuminated from the side of the LED. Switching off the power supply for the electronic complex (in all variants), possibly both by removing the primary power supply, and from the side of the local and external switching cells. The alternate switching off of the power supply units of the power supply device for the electronic complex is possible from the side of the program block (Fig. 2 and 3). When the power supply for the radio-electronic complex is turned off, both by the program block and from cells 4 and 5, the problem of eliminating false indications again arises, at least for the display element related to the power supply being turned off during a software shutdown or that power supply unit the voltage of which disappears faster than that of others with a general shutdown. This is due to the fact that as a result of the disappearance of the output voltage of the power supply unit (s), the protection sensor (s) will operate (operate) and one of the display elements will turn on. Thus, switching off the power supply unit (s) will occur, but the indication will show that one of the power supply units is faulty, i.e. it can be seen that the false indication exclusion circuitry here is ineffective since it prevents only secondary indications, and the signal from that protection sensor, which is earlier than others, is considered reliable. However, the construction of an automatic control unit adopted in a power supply device for an electronic complex makes it possible to easily solve this problem. A false indication at shutdown is eliminated by connecting the common points of the thyristors of the optocouplers 12 and 12 and the LEDs through the diodes 24 and 24 to the outputs of the program block and the switch-on cells. Diodes 24 and 24, 25 and 25.a in the power supply device for the electronic complex (Fig. 2 and .3) are also diodes 26 and 26, in each section of the automatic control unit they form an OR circuit, the diodes 24 and 24 of which through the included software keys the block or switching cells create a circuit for shunting the LEDs to prevent the illumination of their thyristors when turning on the thyristors of the optocouplers 12 and 12, which excludes the inclusion of the optocouplers 14 and 14, and therefore the display elements connected to their thyristors. Claims 1. A constant voltage power supply device for an electronic complex containing at least two outputs having a common point of a secondary stabilized power supply unit, the output of each of which is connected to a corresponding protection sensor, a time relay, local and external switching cells, elements indications by the number of secondary stabilized power supply units, a power source and an automatic control unit, characterized in that, in order to be expanded; No protection functionality, the automatic control unit is made of at least two similar sections for each secondary stabilized power supply unit and a protection sensor, each of which is assembled on two transistors and three thyristor optocouplers, in which the first optocoupler LED is connected to the output of the protection sensor via the first the resistor, the LED of the second optocoupler and the thyristor of the first together with the second

the resistor form a series circuit connected to the power source, the thyristor of the second optocoupler is connected to the power supply source, to which the LED of this optocoupler is connected, the collector of the first transistor, the common input point of the secondary stabilized power supply units and the thyristor of the third optocoupler, the second end of the thyristor of the second optocoupler is simultaneously connected through two in series connected protection diodes to the control input of the secondary stabilized power supply and through the third resistor - The base of the first transistor is connected, furthermore, via the display indication diode to the collector of the second transistor, the base of which through the fourth resistor is connected to the display element and the second output of the third optocance thyristor, the emitter of the first transistor is connected to the fifth resistor and the fifth resistor to the opposite power supply bus connected, furthermore, to the emitter of the second transistor, and the common point of the thyristor of the first and the LED of the second optocoupler, as well as the control input of the secondary stabilizer power supply unit, through the OR circuit on two diodes, is connected to the outputs of the local and external switching cells, to which the control input of the time relay is also connected, the output of which is connected to the enabling inputs of all protection sensors, and the common points of each of the two successively connected The protection diodes and outputs of the indicating indication diodes associated with the collectors of the transistors of all sections of the automatic control unit are interconnected by two different sections.

2. The device according to claim 1, characterized in that, in order to provide software switching on and off of the secondary stabilized power supply units, the time relay is made as separate time relay nodes for each of said blocks, the output of each of which is connected to

the enabling input of the corresponding protection circuit, the control input of each secondary stabilized power supply unit and the corresponding time relay node along with the common point of the thyristor

the first and LEDs of the second optocouplers are connected through an appropriately introduced OR circuit on three diodes to a section of this automatic control unit connected to the output of a program block consisting of two by the number of specified key supply units each of which is switched between one of the outputs of the automatic control unit and a power supply width connected to the common point of the outputs of the secondary stabilized power supply units, and the outputs of the local and external power cells through the additional e diodes coupled to common points diode OR circuits each section of the automatic control unit.

3. The device according to PP. 1 and 2, characterized in that, in order to provide insulation between the outputs of the secondary stabilized power supply units, in each section of the automatic control unit is inserted

an optocoupler diode, the photodiode of which is connected to the control input of the indicated power supply unit, and the diode of the optocoupler diode in series with the resistor forms a chain, one end of which is connected to the common point of the protection protection diode

and the OR circuit diode, and the second to the power source bus connected to the emitter of the second transistor.

Sources of information taken into account in the examination

I. Etzion M. and Rozen S. High-speed protection circuit of a transistor stabilized power source. Electronic Engineering, 1963, V 35, I, No. 419, p. 38-40.

2. Pirogov F.I. Management System

power sources of radio equipment on semiconductor logic elements. Questions of radio electronics, series OT, 1969, no. 21, p. 98-110.

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