KR940002241Y1 - Complementary current circuit - Google Patents

Complementary current circuit Download PDF

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KR940002241Y1
KR940002241Y1 KR2019890004036U KR890004036U KR940002241Y1 KR 940002241 Y1 KR940002241 Y1 KR 940002241Y1 KR 2019890004036 U KR2019890004036 U KR 2019890004036U KR 890004036 U KR890004036 U KR 890004036U KR 940002241 Y1 KR940002241 Y1 KR 940002241Y1
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transistor
current source
collector
current
emitter
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KR2019890004036U
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KR900017890U (en
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박용승
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금성반도체 주식회사
이만용
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/3432—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with bipolar transistors

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

내용 없음.No content.

Description

상보적인 전류원 회로Complementary Current Source Circuit

제 1 도는 본 고안의 회로도.1 is a circuit diagram of the present invention.

제 2 도는 본 고안의 전류원 변화 그래프.2 is a graph of the current source change of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

Rx: 가변저항 Q1-Q7: 트랜지스터R x : Variable resistor Q 1 -Q 7 : Transistor

R1-R3: 저항 I, I1, I2, Ix, Iy: 전류R 1 -R 3 : Resistance I, I 1 , I 2 , I x , I y : Current

본 고안은 상보적(相補的) 전류원 회로에 관한 것으로서, 가변저항의 저항값 변화량에 의해서 두 전류가 상대적으로 변화하도록 하여 이와 같이 상대적 전류원이 필요로 하는 회로에 유용하게 사용할 수 있도록 한것에 주안점을 둔 것이다.The present invention relates to a complementary current source circuit, in which two currents are changed relatively by the amount of change in the resistance value of the variable resistor so that the present invention can be usefully used in a circuit requiring a relative current source. I put it.

두 전류원을 필요로 하고 이 두 전류원이 상대적으로 변화되어 회로를 동작시켜야 하는 기기에서는 각각 별도의 제어회로를 구성하여 한측의 제어회로에서는 전류원을 증가시키고, 다른측의 제어회로에서는 전류원을 감소시켜야 하는데, 제어회로가 별도로 구성되므로서 각각의 제어량이 정확하지 못하게 됨에 따라서 한측은 증가기울기가 크고 다른측의 감소기울기는 작게 되는 문제점을 가지게 되고, 또한 각각 별도의 제어회로를 구성함으로서 회로가 복잡하여 생산원가를 상승시키게 되는 결점을 가지고 있었다.In a device that requires two current sources and the two current sources are changed relatively, each circuit must be operated so that separate control circuits must be configured to increase the current source in one control circuit and reduce the current source in the other control circuit. As the control circuit is configured separately, each control amount becomes inaccurate, so that one side has a problem that the increase slope is large and the decrease slope of the other side is small, and the circuit is complicated by forming a separate control circuit. Had a drawback of rising costs.

본 고안은 상기와 같은 종래의 문제점을 해결하고자 가변저항의 변화량에 따라서 두 전류원의 증가, 감소변화 기울기가 비례하도록 하고 간단한 단일 제어회로로서 변화기울기를 설정할 수 있게 하여 이와 같은 회로를 필요로 하는 기기에 생산원가를 절감하는데 기여할 수 있게 한다.The present invention is to solve the conventional problems as described above, so that the increase and decrease of the slope of the two current sources in proportion to the amount of change in the variable resistor and the change slope as a simple single control circuit equipment that requires such a circuit To reduce production costs.

또한 본 고안은 두 전류원이 상기와 같이 상대적으로 변화하는 양에 기울기가 같도록 하므로서, 이와 같은 회로를 필요로 하는 기기에 이용할시에 오차가 없이 정확한 동작수행이 가능하도록 한 것에 목적을 둔 것이다.In addition, the present invention aims at enabling two current sources to have the same inclination in a relatively varying amount as described above, so that accurate operation can be performed without errors when used in a device requiring such a circuit.

이하 첨부도면에 따라서 설명하면 상대적으로 전류원이 변화하는 것이 더욱 명백하여 질 것이다.In the following description, it will be more apparent that the current source changes relatively.

제 1 도와 같이 가변저항(Rx)의 가변단자인 분압단자점에 저항(R1)을 거친 전류원(I1)을 트랜지스터(Q1) 베이스와 트랜지스터(Q2)의 콜렉터에 접속시키고, 상기 트랜지스터(Q1)의 콜렉터는 전원단자(Vcc)에 접속하고 그 출력을 트랜지스터(Q2, Q3, Q4)의 베이스에 연결하고 전류원(Ix)을 상기 트랜지스터(Q3)의 콜렉터에 인가시키고, 트랜지스터(Q2, Q3, Q4)의 에미터는 접지시켜 전류원 증가회로(1)를 구성한다.As shown in FIG. 1, a current source I 1 having passed through the resistor R 1 at the divided terminal point, which is a variable terminal of the variable resistor R x , is connected to the base of the transistor Q 1 and the collector of the transistor Q 2 . The collector of transistor Q 1 is connected to the power supply terminal Vcc and its output is connected to the base of transistors Q 2 , Q 3 , Q 4 and the current source I x is connected to the collector of transistor Q 3 . And the emitters of the transistors Q 2 , Q 3 and Q 4 are grounded to form the current source increasing circuit 1.

그리고 전원단자(Vcc)에 접속된 저항(R2)에 흐르는 전류원(I)이 상기 트랜지스터(Q4)의 콜렉터에 전류원(Ix)으로 흐르게 하고, 또한 저항(R3)을 거쳐 트랜지스터(Q6)의 콜렉터와 트랜지스터(Q5)의 베이스에 전류원(I2)으로 걸리도록 하고 상기 트랜지스터(Q5)의 콜렉터에 전원단자(Vcc)와 연결되도록 하고 트랜지스터(Q5)의 에미터 전원에 의해 트랜지스터(Q6)(Q7)가 도통되도록 베이스에 연결하고, 이 트랜지스터(Q7)의 콜렉터에 전류원(Iy)을 인가시킬 수 있도록 하고, 트랜지스터(Q6, Q7)의 에미터는 접지되도록 하고 전류원 감소회로(2)를 구성한다.The current source I flowing through the resistor R 2 connected to the power supply terminal Vcc causes the collector of the transistor Q 4 to flow into the current source I x , and also through the resistor R 3 , the transistor Q to the emitter off the collector and the transistor (Q 5), a current source (I 2) as to take, and the transistor (Q 5), a power supply terminal (to be connected to the Vcc) and a transistor (Q 5) to the collector of the base of the 6) by a transistor (Q 6) (Q 7) is conductive for connection to the base, and to be able to apply a current source (I y) to a collector of the transistor (Q 7), the transistor (Q 6, Q 7) emitter of It is grounded and the current source reduction circuit 2 is constructed.

따라서, 상기 전류원(Ix)(Iy)이 가변저항(Rx)의 변화량에 따라서 상대적으로 변화하도록 한다.Therefore, the current source I x (I y ) is relatively changed according to the change amount of the variable resistor R x .

그리고 제 2 도는 상기 전류원(Ix)(Iy)이 전압 전류변화량에 따라서 변화하는 그래프를 나타낸 것이다.2 shows a graph in which the current source Ix (I y ) changes according to the voltage current change amount.

이와 같은 회로로서 구성된 본 고안은 가변저항(Rx)의 조정으로 저항(R1)에 걸리는 분압전압이 가변되는데 이 저항(R1)에 흐르는 전류가 변화하게 된다.In the present design such a circuit is configured there is the divided voltage across the resistor (R 1) to the adjustment of the variable resistance (R x) is a variable current flowing to the resistance variation (R 1).

트랜지스터(Q1)의 베이스에 흐르는 전류는 매우 적은 전류이므로 이 베이스 전류를 무시하면 트랜지스터(Q2)에 흐르는 콜렉터 전류는 상기 전류(I1)와 같게 되고, 또한 트랜지스터(Q2)(Q3)(Q4)의 베이스에 에미터간의 전압이 같기 때문에 트랜지스터(Q3)(Q4)의 콜렉터 전류는 전류(I1)와 같게 된다.Since the current flowing through the base of the transistor Q 1 is very small, ignoring this base current, the collector current flowing through the transistor Q 2 becomes the same as the current I 1 , and the transistor Q 2 (Q 3 ). ) collector current of (Q 4) transistor (Q 3) (Q 4) because the base equal to the voltage between the emitter of the is equal to the current (I 1).

저항(R3)으로 흐르는 전류(I2)와 저항(R2)을 통해 흐르는 전류(I)의 관계는 I=Ix+I2가 되므로서 I2=I-Ix가 된다.The relationship between the current I 2 flowing through the resistor R 3 and the current I flowing through the resistor R 2 is I = I x + I 2 , resulting in I 2 = II x .

트랜지스터(Q5)의 베이스 전류를 무시하면, 트랜지스터(Q6)의 콜렉터전류와 전류(I2)는 같게 되고, 트랜지스터(Q6)(Q7)의 베이스와 에미터간 전압이 같기 때문에 콜렉터 전류 Iy는 전류(I2)와 같게 된다.If the base current of transistor Q 5 is ignored, the collector current of transistor Q 6 and current I 2 are equal, and the collector current is equal since the voltage between the base and emitter of transistor Q 6 (Q 7 ) is the same. I y becomes equal to the current I 2 .

따라서 가변저항(Rx)에 의한 분압전압의 조정에 따라서 트랜지스터(Q3)의 콜렉터 전류(Ix)는 증가하고, I2=I-Ix=Iy이므로 트랜지스터(Q7)의 콜렉터 전류(Iy)는 감소하게 된다.Therefore, the collector current I x of the transistor Q 3 increases according to the adjustment of the divided voltage by the variable resistor R x , and since the collector current I of the transistor Q 7 is I 2 = II x = I y . y ) decreases.

즉, 가변저항(Rx)의 가변에 따라서 두 전류(Ix)(Iy)는 상대적으로 제 2 도와 같이 변화하게 된다.That is, the two currents I x (I y ) relatively change with the second degree according to the change of the variable resistor R x .

이와 같이 본 고안은 상보적으로 두 전류를 변화시킬 수 있게 되고, 동일 회로의 제어로 변화시킬 수 있게 되어 오차가 없이 정확한 상보전류를 얻을 수 있게 되므로, 이와 같은 회로를 필요로 하는 기기에 이용할시에 오동작의 염려를 줄이고 생산원가를 절감할 수 있게 된 것이다.As such, the present invention can change the two currents complementarily and can be changed by the control of the same circuit, so that accurate complementary current can be obtained without any error. This can reduce the risk of malfunction and reduce production costs.

Claims (1)

가변저항(Rx)의 가변량으로 변화시키는 제 1 전류원(I1)을 콜렉터에 전원단자(Vcc)이 연결된 트랜지스터(Q1)의 베이스와 트랜지스터(Q2)의 콜렉터에 접속시키고, 상기 트랜지스터(Q1)의 에미터는 트랜지스터(Q2, Q3, Q4)의 베이스에 접속시키며, 상기 트랜지스터(Q1)의 콜렉터에 변화시키고자 하는 제 1 가변전류원(Ix)을 연결하고 상기 트랜지스터(Q2, Q3, Q4)의 에미터를 접지시켜 상기 제 1 전류원(I1)에 비례하여 제 1 가변전류원(Ix)이 공급되도록 하고, 일정한 제 2 전류원(I)을 상기 트랜지스터(Q4)의 콜렉터에 접속함과 동시에 콜렉터와 전원단(Vcc)이 연결된 트랜지스터(Q5)의 베이스와 에미터가 접지된 트랜지스터(Q6)의 콜렉터에 접속시키고, 상기 트랜지스터(Q5)의 에미터를 에미터가 접지된 트랜지스터(Q7)와 상기 트랜지스터(Q6)의 베이스에 공통접속시키고, 변화시키고자 하는 제 2 가변전류원(Iy)을 상기 트랜지스터(Q7)의 콜렉터에 접속시켜 상기 제 1 전류원(I1)에 반비례하여 제 2 가변전류원(Iy)이 공급되도록 함을 특징으로 하는 상보적인 전류원 회로.The first current source I 1 , which is changed by the variable amount of the variable resistor R x , is connected to the base of the transistor Q 1 , in which the power supply terminal Vcc is connected to the collector, and the collector of the transistor Q 2 . The emitter of (Q 1 ) is connected to the base of transistors (Q 2 , Q 3 , Q 4 ), connects a first variable current source (I x ) to be changed to the collector of transistor (Q 1 ), and the transistor (Q 2, Q 3, Q 4) to ground the emitter of the first current source (I 1) in proportion to the first variable current source (I x) is to be supplied, a constant second current source (I) for the transistor of (Q 4) connected to the collector and at the same time the base and the emitter of the collector and a power supply terminal (Vcc) is connected to the transistor (Q 5) and connected to the collector of the grounded transistor (Q 6) of said transistor (Q 5) the emitter of an emitter grounded transistor (Q 7) of the said transistor (Q 6) Vespa And commonly connected to the switch, change and character second variable current source (I y) of the transistor (Q 7) a second variable current source (I y) was connected to the collector in inverse proportion to the first current source (I 1) of the Complementary current source circuit characterized in that the supply.
KR2019890004036U 1989-03-31 1989-03-31 Complementary current circuit KR940002241Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019890004036U KR940002241Y1 (en) 1989-03-31 1989-03-31 Complementary current circuit

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Application Number Priority Date Filing Date Title
KR2019890004036U KR940002241Y1 (en) 1989-03-31 1989-03-31 Complementary current circuit

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KR900017890U KR900017890U (en) 1990-10-05
KR940002241Y1 true KR940002241Y1 (en) 1994-04-11

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