SU783771A1

SU783771A1 - Dc stabilizer

Info

Publication number: SU783771A1
Application number: SU792705648A
Authority: SU
Inventors: Игорь Львович Кольцов; Георгий Николаевич Гулякович
Original assignee: Предприятие П/Я В-8466
Priority date: 1979-01-04
Filing date: 1979-01-04
Publication date: 1980-11-30

Description

1one

Изобретение относитс к электротехнике и может примен тьс в интегральных схемах устройств электропитани узлов автоматики, вычислительной техники и средств св зи.The invention relates to electrical engineering and can be used in integrated circuits of power supply devices for automation units, computing equipment and communication facilities.

Известен стабилизатор посто нного тока,содержащий полевой транзистор, диоды и эммитерный повторитель l.A known DC stabilizer contains a field effect transistor, diodes and an emitter follower l.

Недостатком его . вл етс низка термостабильность из-за разброса пара метров полевого транзистора.The disadvantage of it. thermal stability is low due to the spread of the parameters of the field-effect transistor.

Известен также стабилизатор посто нного тока,содержащий полевой транзистор , между истоком и затвором которого включен резистор 2 J.Also known is a DC stabilizer containing a field-effect transistor, between the source and gate of which resistor 2 J. is connected.

Недостатком этого стабилизатора вл етс мала величина стабилизируемого тока, соответствующа нулевому температурному коэффициенту.The disadvantage of this stabilizer is a small amount of stabilized current, corresponding to a zero temperature coefficient.

Целью изобретени вл етс увели чение значени термостабильного тока.The aim of the invention is to increase the value of the thermostable current.

Поставленна цель достигаетс тем, что в стабилизатор посто нного тока дополнительно введены второй резистор и бипол рный транзистор, причем второй резистор включен последовательно . с первым резистором, а бипол рный транзистор подключен эмиттером к истО ку, ко.гитектором - к затвору полевого The goal is achieved by adding a second resistor and a bipolar transistor to the DC regulator, with the second resistor being connected in series. with the first resistor, and the bipolar transistor is connected by the emitter to the source, and the co-switch to the gate

транзистора, а базой - к точке соединени резисторов.transistor, and the base - to the point of connection of resistors.

Принципиальна электрическа схема устройства показана на чертеже.The circuit diagram of the device is shown in the drawing.

Стабилизатор посто нного тока содержит полевой 1, бипол рный 2 транзисторы , резисторы 3 и 4. Бипол рный транзистор 2, между переходами базаэмиттер и база-коллектор The DC stabilizer contains a field 1, bipolar 2 transistors, resistors 3 and 4. Bipolar transistor 2, between the base of the emitter and the base-collector

10 включенырезисторы 3 и 4, включен в цепь истока полевого транзистора 1. Точка соединени затвора полевого транзистора 1 с коллектором бипол рного транзистора 2 и сток полевого 10 includes resistors 3 and 4 included in the source circuit of the field-effect transistor 1. The point of connection of the gate of the field-effect transistor 1 with the collector of the bipolar transistor 2 and the field drain

15 транзистора вл ютс выходными выводами стабилизатора.The 15 transistors are output pins of the stabilizer.

Температурна компенсаци в стабилизаторе тока достигаетс при определенном отношении резисторов 3 и 4, Temperature compensation in the current stabilizer is achieved with a certain ratio of resistors 3 and 4,

20 которое может быть определено по формуле:20 which can be determined by the formula:

-(.О Гб.э-.5иБ.з - (. About Gb.e-.5iB.z

2525

-резисторы 3 и 4,.-resistors 3 and 4 ,.

где R.where R.

-напр жение отсечки полевого транзистора.- voltage cutoff of a field effect transistor.

Claims

30 and .. - temperature coefficient b. E is the voltage and voltage between the base and the emitter of the bipolar transistor. The magnitude of the thermostable current can be determined by the formula s. - the initial current of the field resistor. The proposed current stabilizer will be able to obtain full temperature compensation at a current higher (approx. A times) than with the known stabilizers and to simplify the adjustment, so in. At this point, the characteristics of the field-effect transistor are about 3 times more. DETAILED DESCRIPTION OF THE INVENTION A DC stabilizer comprising a field effect transistor between the TOKCSM and the gate of which includes a resistor which is different in that, in order to increase the value of the thermally stable current, a second resistor and a bipolar transistor are added to it, the second resistor being connected in series with the first resistor, the bipolar transistor is connected by the emitter to the source, the collector to the gate of the field-effect transistor to the base and to the connection point of the resistors. Sources of information taken into account during the examination 1. USSR author's certificate 325669, cl. H 02 M 3/335, 1972.

2. Shtilman V.I. Microelectronic voltage regulators. Kiev, Technique, 1976, p. 79, rice, 20, n.