SU1273904A1

SU1273904A1 - D.c.voltage stabilizer

Info

Publication number: SU1273904A1
Application number: SU853866174A
Authority: SU
Inventors: Геннадий Алексеевич Утин; Яков Маркович Пикман
Original assignee: Предприятие П/Я Г-4954
Priority date: 1985-03-13
Filing date: 1985-03-13
Publication date: 1986-11-30

Abstract

Изобретение относитс к электротехнике , в частности к источникам вторичного электропитани . Цель изобретени - повьшение надежности. Токоограничительный элемент 9 в виде лампы накаливани , тиристор 11 и токозадающий резистор 12 выполн ют роль цепи запуска. В нормальном режиме тиристор 11 открыт, по лампе элемента 9 течет ток, ее свечение сигнализирует о нормальном режиме. При ,коротком замыкании регулирующий транзистор 1 запираетс из-за триггерного эффекта самозащиты. Выключенное состо ние заблокировано, ток через регулирующий элемент 1 почти равен нулю. Тиристор 11 остаетс включенным, ток через элемент 9 продолжает протекать. 1 з.п.ф-лы, 1 ил. (/)The invention relates to electrical engineering, in particular to sources of secondary power supply. The purpose of the invention is to increase reliability. A current-limiting element 9 in the form of an incandescent lamp, a thyristor 11 and a current-carrying resistor 12 perform the role of a trigger circuit. In normal mode, the thyristor 11 is open, current flows through the lamp of element 9, and its luminescence signals the normal mode. In the event of a short circuit, the control transistor 1 is closed due to the trigger effect of self-defense. The off state is blocked, the current through regulating element 1 is almost zero. The thyristor 11 remains on, the current through the element 9 continues to flow. 1 hp ff, 1 ill. (/)

Description

Изобретение относится к электро- этом выключенное состояние будет затехнике и может быть использовано в источниках вторичного электропитания.The invention relates to an electrical off state will be a technician and can be used in secondary power sources.

Цель изобретения - повышение надежности. 5The purpose of the invention is to increase reliability. 5

На чертеже представлена принципиальная электрическая схема стабилизатора постоянного напряжения.The drawing shows a circuit diagram of a DC voltage stabilizer.

Стабилизатор содержит регулирующий транзистор 1, включенный между 10 входным 2 и выходным 3 выводами, опорный элемент 4 и резистор 5 нелинейного делителя напряжения, резисторы 6 и 7 линейного делителя напряжения, усилитель постоянного тока на тран- 15 зисторе 8, токоограничительный элемент 9, выполненный в виде лампы накаливания, общую шину 10, тиристор 11 и токозадающий резистор 12.The stabilizer includes a control transistor 1 connected between 10 input 2 and output 3 outputs, a reference element 4 and a resistor 5 of a nonlinear voltage divider, resistors 6 and 7 of a linear voltage divider, a DC amplifier on transistor 8, a current limiting element 9, made in in the form of an incandescent lamp, a common bus 10, a thyristor 11 and a current-setting resistor 12.

Стабилизатор работает следующим 20 образом.The stabilizer operates as follows 20.

При подаче напряжения питания на входной вывод 2, от него через лампу 9, резистор 7, переход база-эмиттер транзистора 8 и резистор 5 поте- 25 чет ток запуска, под действием которого транзисторы 1 и 8 откроются. При отсутствии аварийной ситуации выходным напряжением на выходном выводе 3 тиристор 11 будет открыт, по зо лампе 9 потечет ток накала и лампа загорится, сигнализируя о режиме стабилизации. Если лампа не горит, значит тиристор 11 не открылся, что свидетельствует об отсутствии на выводе 3 положительного потенциала,т.е. о коротком замыкании на выходе и необходимости его устранения.When a supply voltage is applied to input terminal 2, from it through a lamp 9, a resistor 7, the base-emitter junction of the transistor 8 and the resistor 5 flow, the trigger current flows, under which transistors 1 and 8 open. In the absence of an emergency, the output voltage at the output terminal 3 of the thyristor 11 will be open, the glow current will flow through the lamp 9 and the lamp will light up, signaling the stabilization mode. If the lamp does not light, then the thyristor 11 has not opened, which indicates the absence of a positive potential at terminal 3, i.e. about a short circuit at the output and the need to eliminate it.

При возникновении короткого замыкания в процессе работы стабилизато- ₄θ ра транзистор 1 запирается вследст- . вие триггерного эффекта защиты, которым обладает стабилизатор. При блокировано и ток через регулирующий элемент почти равен нулю. Тиристор остается включенным, обеспечивая ток через элемент 9.If a short circuit occurs during operation of the stabilizer ₄ θ pa, the transistor 1 is locked after. vie trigger effect of protection, which has a stabilizer. When blocked, and the current through the control element is almost zero. The thyristor remains on, providing current through element 9.

Благодаря введенным средствам осуществляется запуск стабилизатора, при этом цепь запуска на номинальный режим влияния не оказывает, отсутствие в цепи запуска контактных групп повышает надежность.Thanks to the introduced means, the stabilizer is launched, while the start circuit does not affect the nominal mode, the absence of contact groups in the start circuit increases reliability.

Claims

The invention relates to electrical engineering and can be used in secondary power supply sources. The purpose of the invention is to increase reliability. The drawing shows a circuit diagram of a constant voltage stabilizer. The stabilizer contains a regulating transistor 1 connected between the input 2 and output 3 pins, an ad hoc element 4 and a resistor 5 of a nonlinear voltage divider, resistors 6 and 7 of a linear voltage divider, a DC amplifier on a transistor 8, a current limiting element 9, made in as an incandescent lamp, a common bus 10, a thyristor 11 and a current-setting resistor 12. The stabilizer operates as follows. When the supply voltage is applied to the input pin 2, from it through the lamp 9, the resistor 7, the base-to-emit transition of the transistor 8 and the resistor 5 receives the starting current, under the action of which the transistors 1 and 8 will open. In the absence of an emergency, the output voltage at the output terminal 3 of the thyristor 11 will be open, the heating current will flow through the lamp 9 and the lamp will light to indicate stabilization mode. If the lamp does not light up, then the thyristor 11 did not open, which indicates the absence of a positive potential at pin 3, i.e. a short circuit at the output and the need to eliminate it. If a short circuit occurs during the operation of the stabilizer, transistor 1 is closed due to the triggering effect of the protection that the stabilizer has. In this case, the off state will be blocked and the current through the regulating element is almost zero. The thyristor remains on, providing current through the element 9. Thanks to the input means, the stabilizer is started, and the trigger circuit does not affect the nominal mode, the absence of contact groups in the trigger circuit increases reliability. Claim 1. A DC voltage regulator containing a control transistor connected by an emitter, a collector and a base, respectively, to the input terminal, output terminal and output of the DC amplifier, the inputs of which are separately connected to the middle terminals of the nonlinear and linear voltage dividers connected to the common bus, and its supporting element and one of the linear divider resistors - to the output terminal, characterized in that, in order to increase reliability, current limits are introduced into it The main element, the thyristor and the current-setting resistor i are connected to the current-limiting element between the input terminal and another linear divider resistor, between which and the common bus is connected a thyristor, the control electrode of which is connected to the output terminal through the current-giving resistor.

2. A stabilizer according to Claim 1, characterized in that the current-limiting element is designed as a glow lamp.