SU1439560A1 - Bipolar voltage stabilizer - Google Patents

Description

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The invention relates to electrical engineering and can be used in secondary sources of electrical power for electronic equipment.

The aim of the invention is to increase the stability of the output voltage.

The drawing shows the principle collector of the tenth transistor 23, the base of which is connected to the collector of transistor 9, and the emitter to the combined second collector and base of transistor 6, the base of transistor 11 is connected to the collector of transistor 10, and its emitter is connected to the base of the output transistor of the first regulating

electrical circuit of a two-pole p-jq compound transistor 1, emitter

of the eleventh transistor 24, the connection of the two-pole stabilizer constant to the second terminal of the resistor 15, the first voltage contains the first 1 and its base - to the junction point of the second 2 regulating composite transistors 17 and 18. In this case, the transistors, the first 3 and second 4 sources-j ry 1,5,6,7,11,12,13,23 and 24 and the input

20

current currents, first 5, second 6, third 7, fourth 8, fifth 9, sixth 10, seventh 11, eighth 12, ninth 13 transistors, first 14, second 15, third 16, fourth 17, fifth 18 resistors, the first output of the first current source 3 is connected to the first input bus 19 and to the collector circuit of the first regulating composite transistor 1, the second output of the source 25 in that the emitter junction area S is connected to the base of the first regulator - base of transistor 9 in N times larger than the dividing composite transistor 1 and than with the transistor 10, i.e. to the emitters of transistors 5-7 and 12, the bases of transistors 5-7 are combined, the first collector of transistor 5 is connected to the collector of transistor 8, the base of which is connected to the common bus, and the emitter is directly to the emitter of transistor 9 and through a resistor 14 to the emitter of transistor 10 and to the first pin of the resistor 15, the bases of the transistors 9 and 10 are combined and connected via the resistor 16 to the first output bus 20 and to the emitter circuit of the first regulating composite transistor 1, .a through resistors 17 and 18 to the second output bus 21 and to the emitter circuit second regulate composite transistor 2, the collector circuit of which is connected

the regulating transistor of the compound transistor 2 has one type of conductivity, and the remaining transistors have a second, opposite type of conductivity.

The static mode of the transistors 5-10 included in the combined source of the reference voltage and the amplifier of the error signal is provided

Then with equal points of emitters

of these transistors, the voltage difference emitter-base D Ugg j, o is determined by the formula

 ieBa1o Ch t1-P N, (1)

where m is the technological coefficient; QT-temperature potential. The alignment of the currents of the transistors 5-10 is accomplished by equalizing the collector potentials — the base of these transistors through the regulating transistor 1 and the matching transistors 11-13 and 23. Reference voltage

thirty

40

Un taking into account the expression (1) is defined -45

is out of proportion

Ug, .2U, g + (mq, lnN) (3R, j) / R ,, (2) where U, is the voltage emitter - base

Transistors 10 and 24. It is well known that choosing the right 3R | 5 / R 4 ratio can be achieved with thermal compensation U. The current consumption of the source of reference voltage has almost no effect

to the second input bus 22 and to the first output of source 4, and bases, and to the second output of source 4 and to the collector of transistor 11, the collector of transistor 9 is connected to a transistor collector 45

transistors 10 and 24. It is known that when choosing the correct ratio 3R | 5 / R) 4, it is possible to finish the thermal compensation U. The current consumption of the source of the reference voltage has almost no effect

the torus 6, and the collector of the transistor 10 - the output voltage, so to only

with the collector of the transistor 7. The transistors 5 and 6 are made two-collector, and the collector of transistor 12 is connected to the bus 22, and the base to the second collector of transistor 5 and to the emitter of transistor -13, the base of which is connected to the collector of transistor 8, and the collector .- to shared bus and

the fact that the area of the S emitter junction - the base of the transistor 9 is N times larger than that of the transistor 10, i.e.

the regulating transistor of the compound transistor 2 has one type of conductivity, and the remaining transistors have a second, opposite type of conductivity.

The static mode of the transistors 5-10 included in the combined source of the reference voltage and the amplifier of the error signal is provided

the fact that the area of the S emitter junction - the base of the transistor 9 is N times larger than that of the transistor 10, i.e.

Then with equal points of emitters

of these transistors, the voltage difference emitter-base D Ugg j, o is determined by the formula

 ieBa1o Ch t1-P N, (1)

where m is the technological coefficient; QT-temperature potential. The alignment of the currents of the transistors 5-10 is accomplished by equalizing the collector potentials — the base of these transistors through the regulating transistor 1 and the matching transistors 11-13 and 23. Reference voltage

U-n taking into account the expression (1) is defined -

is out of proportion

Ug, .2U, g + (mq, lnN) (3R, j) / R ,, (2) where U, is the voltage emitter - base

Transistors 10 and 24. It is well known that choosing the right 3R | 5 / R 4 ratio can be achieved with thermal compensation U. The current consumption of the source of reference voltage has almost no effect

its small part (base current of transistor 24) flows through the output voltage divider. The temperature compensation of the base current of the transistor 1: a 24 is carried out in proportion to the change in the current gain of the transistor and the static current of the transistors 5-10.

The bipolar voltage regulator operates as follows.

The voltage increment on the output bus 20 of the voltage stabilizer le-the output voltage divider (resistors 14 and 15), the error signal amplifier (transistors 5-10) and the matching transistors 13 and 12 are transmitted to the base of the control transistor 1. Conductance of the transistor 1 is varied so as to compensate for the initial change in output voltage. When the voltage across the output bus 21 changes, the stabilization process is similar, with the only difference that the matching element is a transistor 1 1,

- Thus, this bipolar

The voltage regulator has a higher output voltage stability compared to the prototype by compensating for the instability of the reference voltage associated with a change in the current consumption by the amplifier of the error signal passing through the output voltage divider.

Claims (1)

Invention Formula A dual voltage regulator containing the first and second regulating composite transistors, the first and second current sources, nine transistors, five resistors, the first output of the first current source connected to the first input bus and the collector circuit of the first regulating transistor, the base of which is connected to the second output of the first source, and to the emitters of the first, second, third transistors, the bases of which are combined, the collector of the first transistor is connected to the collector of the fourth transistor, the base of which is connected to the common bus, and the emitter is directly to the emitter of the pth transistor and through the first resistor to the emitter of the sixth transistor and to the first output of the second resistor, the base of the fifth and sixth transistors are combined and through treQ 5 five 0 five 0 five 0 The third resistor is connected to the first output bus and to the emitter circuit of the first regulating composite transistor, and through the fourth and fifth resistors to the second output bus and to the emitter circuit of the second regulating composite transistor, whose collector circuit is connected to the second input bus and to the first output of the second the current source, and the base to the second, the output current BTOpqro and to the collector of the seventh transistor, the collector of the fifth transistor is connected to the collector of the second transistor, and the collector of the sixth transistor is connected to The first transistor, the first, second, third, seventh, as well as the input transistors of the second regulating composite transistor have one type of conduction, a quarter, fifth, sixth, and also the transistors of the first regulating composite transistor have the opposite type of conductivity, differing from that, in order to increase the stability of the output voltage, the tenth and eleventh transistors are introduced into it, and the first and second transistors are made two-collector, and the emitter of the eighth transistor is connected n to the emitter of the first transistor, the collector to the second input bus, and the base to the second collector of the first transistor and to the emitter of the ninth transistor whose base is connected to the collector of the fourth transistor, and the collector to the ten transistor The emitter of which is connected to the combined second collector and the base of the second transistor, the base of the seventh transistor is connected to the collector of the sixth transistor, the emitter is connected to the base of the output transistor of the first regulating composite transistor, the emitter is single The tenth transistor is connected to the second output of the second resistor, the base is connected to the junction point of the fourth and fifth resistors, with the eighth, ninth, tenth and eleventh transistors having pn-p-type conductivity.