SU1270878A1

SU1270878A1 - Device for charging reservoir capacitor

Info

Publication number: SU1270878A1
Application number: SU833656917A
Authority: SU
Inventors: Владимир Леонидович Семенов
Original assignee: Предприятие П/Я М-5209
Priority date: 1983-09-16
Filing date: 1983-09-16
Publication date: 1986-11-15

Abstract

Изобретение может быть использовано в источниках питани импульсных ламп-вспышек. Цель изобретени повышение КПД. Достигаетс введением транзисторного ключа (К) 6. При подключении источника питани к шинам 4 и 7 открываетс К 1. Через первичную обмотку трансформатора (Т) 3 начинает протекать линейно нарастающий ток, а в магнитном поле Т 3 накапливаетс энерги . Открытое состо ние К 1 поддерживаетс током Цепи 2 управлени . Диод 8 заперт напр жением , наведенным во вторичной обмотке Т 3. По завершении роста тока ЭДС наводимые в обмотках Т 3, мен ют пол рность и через конденсатор 9 начинает протекать зар дный ток, отЛ рающий Кб, который, открыва сь,форсирует запирание К 1. По прекращении зар дного тока К 6 за счет инерi ционности процессов в нем некоторое врем остаетс в открытом состо нии, W а К 1 будет закрыт. После запирани К 6 процессы повтор ютс . 1 ил. to о 00 «sj 00The invention can be used in the power sources of flashlamps. The purpose of the invention is increased efficiency. This is achieved by inserting a transistor switch (K) 6. When the power source is connected to buses 4 and 7, K 1 is opened. A linear current begins to flow through the primary winding of the transformer (T) 3, and energy is accumulated in a magnetic field T 3. The open state of K 1 is maintained by the current of the control circuit 2. The diode 8 is blocked by the voltage induced in the secondary winding T 3. At the end of the current growth, the EMF induced in the windings T 3 change polarity and a charging current starts flowing through the capacitor 9, which causes the locking of K 1. Upon termination of the charge current K 6 due to the inertia of the processes in it, it remains in the open state for some time, W and K 1 will be closed. After locking the K 6 processes are repeated. 1 il. to about 00 "sj 00

Description

Изобретение относится к импульсной технике, а именно к устройствам для зарядки емкостных накопителей энергии, и может быть использовано в источниках питания импульсных лампвспышек .The invention relates to a pulse technique, and in particular to devices for charging capacitive energy storage devices, and can be used in flash lamp power sources.

Цель изобретения - повышение КПД устройства.The purpose of the invention is to increase the efficiency of the device.

На чертеже представлена принципиальная электрическая схема предлагаемого устройства.The drawing shows a circuit diagram of the proposed device.

Устройство для зарядки накопительного кондейсатора содержит первый транзисторный·ключ 1 с цепью 2 управления, коллектор которого подключен через первичную обмотку трансформатора 3 к первой шине 4 источника питания (не показан), соединенной через резистор 5 с базой первого транзисторного ключа 1 и коллектором второго транзисторного ключа 6, эмиттер которого подключен к второй шине 7 источника питания,соединенной с эмиттером первого транзисторного ключа 1, база которого 'соединена с выходом цепи 2 управления, вход которой связан с первичной обмоткой трансформатора 3, вторичная обмотка которого,включеннаясинфазно с его первичной обмоткой, подключена первым выводом через последовательно соединенные первый диод 8 и накопительный конденсатор 9 к второй шине 7 и аноду второго диода 10,точка соединения катода которого с вторым выводом вторичной обмотки трансформатора 3 подключена к базе второго транзисторного ключа 6.При этот первый диод 8 соединен с вторичной обмоткой трансформатора 3 катодом, а транзисторные ключи выполнены на транзисторах п-р-п типа. Цепь 2 управления выполнена, например, в виде транзистора 11 р-п-р типа, база которого соединена с коллектором'первого транзисторного ключа 1, база которого соединена с коллектором транзистора 11, эмиттер которого через резистивный элемент 12 подключен к первой шине·4.A device for charging a storage capacitor contains a first transistor · key 1 with a control circuit 2, the collector of which is connected through the primary winding of the transformer 3 to the first bus 4 of the power source (not shown) connected through the resistor 5 to the base of the first transistor switch 1 and the collector of the second transistor switch 6, the emitter of which is connected to the second bus 7 of the power source connected to the emitter of the first transistor switch 1, the base of which is connected to the output of the control circuit 2, the input of which is connected to the primary the winding of the transformer 3, the secondary winding of which is connected in phase with its primary winding, is connected by the first output through the first diode 8 and the storage capacitor 9 connected in series to the second bus 7 and the anode of the second diode 10, the cathode connection point with the second terminal of the secondary winding of the transformer 3 is connected to the base of the second transistor switch 6. When this first diode 8 is connected to the secondary winding of the transformer 3 by a cathode, and the transistor switches are made on transistors of the p-p-p type. The control circuit 2 is made, for example, in the form of a transistor 11 rpn type, the base of which is connected to the collector of the first transistor switch 1, the base of which is connected to the collector of transistor 11, the emitter of which is connected through the resistive element 12 to the first bus · 4.

Устройство для зарядки накопительного конденсатора работает следующим образом.A device for charging a storage capacitor operates as follows.

При подключении источника питания к шинам 4 и 7 открывается первый транзисторный ключ 1 током, протекающим через резистор 5. При этом через первичную обмотку транс.формаWhen the power supply is connected to the buses 4 and 7, the first transistor switch 1 opens with the current flowing through the resistor 5. At the same time, the trans form is through the primary winding

2.70878 тора 3 начинает протекать линейно нарастающий ток, а в магнитном поле трансформатора накапливается энергия. Открытое состояние ключа 1 под5 держивается током, протекающим через цепь 2 управления. При этом диод 8 заперт напряжением, наведенным на вторичной обмотке трансформатора 3. По завершении роста тока, протекаю10 щего через первичную обмотку трансформатора 3, ЭДС, наводимые в его обмотках, меняют полярность на противоположную, и через конденсатор 9 начинает протекать зарядный ток, 15 отпирающий транзисторный ключ 6,который, открываясь, форсирует запирание ключа 1. По прекращении зарядного -тока ключ 6 за счет инерционности процессов в нем будет некоторое вре20 мя .оставаться в открытом состоянии, а ключ 1 будет закрыт. После запирания ключа 6 описанные процессы повторяются.2.70878 of torus 3, a linearly increasing current begins to flow, and energy accumulates in the magnetic field of the transformer. The open state of key 1 is maintained by current flowing through control circuit 2. In this case, the diode 8 is closed by the voltage induced on the secondary winding of the transformer 3. Upon completion of the growth of the current flowing through the primary winding of the transformer 3, the EMF induced in its windings reverse the polarity, and a charging current begins to flow through the capacitor 9, unlocking 15 transistor switch 6, which, when opened, forces the locking of key 1. Upon termination of the charging current, switch 6 will remain open for a while due to the inertia of the processes in it, and switch 1 will be closed. After locking the key 6, the described processes are repeated.

Claims

I The invention relates to a pulse technique, namely, devices for charging capacitive energy stores, and can be used in the power sources of flashlamps. The purpose of the invention is to increase the efficiency of the device. The drawing shows a circuit diagram of the proposed device. The device for charging the storage capacitor contains a first transistor; a key 1 with a control circuit 2, the collector of which is connected through the primary winding of the transformer 3 to the first bus 4 of a power source (not shown) connected through a resistor 5 to the base of the first transistor switch 1 and collector The second transistor switch 6, the emitter of which is connected to the second power supply bus 7 connected to the emitter of the first transistor switch 1, the base of which i is connected to the output of control circuit 2, the input of which is connected to the primary but the winding of the transformer 3, the secondary winding of which is connected in phase with its primary winding, is connected by the first output through a series of connected first diode 8 and a storage capacitor 9 to the second bus 7 and the anode of the second diode 10, the connection point of the cathode of which with the second output of the secondary winding transformer 3 is connected to the base of the second transistor key 6. When this first diode 8 is connected to the secondary winding of the transformer 3 by the cathode, and the transfer keys are made on n-type transistors. The control circuit 2 is made, for example, in the form of a transistor 11 of a pnp type, the base of which is connected to the collector of the first transistor switch 1, the base of which is connected to the collector of transistor 11, the emitter of which is connected to the first bus 4. The device for charging the storage capacitor operates as follows. When the power source is connected to buses 4 and 7, the first transistor switch 1 is opened by the current flowing through the resistor .5. At the same time, the primary current of the transformer 8J of the torus 3 begins to flow linearly with the growth of the 1st current, and energy accumulates in the magnetic field of the transformer. The open state of the key 1 is maintained by the current flowing through the control circuit 2. In this case, the diode 8 is blocked by the voltage induced on the secondary winding of the transformer 3. When the current flowing through the primary winding of the transformer 3 is completed, the electromotive voltage induced in its windings changes polarity to the opposite, and the charge current flows through the capacitor 9 , an unlocking transistor switch 6, which, when opened, forces the locking of key 1. Upon the termination of the charge current, the key 6 due to the inertia of the processes in it will take some time in the open state and the key 1 will be closed. After locking the key 6, the processes described are repeated. The invention is a device for charging a storage capacitor comprising a first transistor switch with a control circuit, the collector of which is connected through the primary winding of a transformer to the first power supply bus connected through a resistor to the base of the first transistor switch, the emitter of which is connected to the second power supply bus, the first output of the secondary winding of the transformer is connected through a series-connected first diode and a storage capacitor to one electrode of the second diode, and ba for the first transistor switch connected to the output of the control circuit, the input of which is connected with the primary winding of the transformer, characterized in that, in order to increase efficiency, a second transistor switch is inserted into it, the collector of which is connected to the base of the first transistor switch, the emitter is connected to the second rail power supply, and the base to the second output of the secondary winding of the transformer and another electrode of the second diode, connected counter-parallel to the base-emitter junction of the second transistor switch, the first and second diodes connecting They are connected to a storage capacitor with like electrodes, the first and second transistor switches are made 12708784 on transistors of the same conductivity type, and the primary and secondary windings of the transformer are turned on in-phase