KR940005922Y1 - Constant voltage tracking power circuit - Google Patents

Constant voltage tracking power circuit Download PDF

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KR940005922Y1
KR940005922Y1 KR92011935U KR920011935U KR940005922Y1 KR 940005922 Y1 KR940005922 Y1 KR 940005922Y1 KR 92011935 U KR92011935 U KR 92011935U KR 920011935 U KR920011935 U KR 920011935U KR 940005922 Y1 KR940005922 Y1 KR 940005922Y1
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power supply
voltage
regulator
variable
power
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KR92011935U
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KR940001710U (en
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류창복
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정장호
금성정보통신 주식회사
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current

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

Abstract

내용 없음.No content.

Description

0 볼트 부터 가변가능한 정전압 트래킹 전원회로Constant Voltage Tracking Power Circuit Adjustable from 0 Volts

제1도는 종래 기술의 정전압 트래킹 회로 블럭도.1 is a block diagram of a constant voltage tracking circuit of the prior art.

제2도는 본 고안의 정전압 트래킹 회로 블럭도.2 is a block diagram of a constant voltage tracking circuit of the present invention.

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

A : (+)전원회로 B : (-)전원회로A: (+) power circuit B: (-) power circuit

IC1,IC2: 레귤레이터 IC3: 전압비교기IC 1 , IC 2 : Regulator IC 3 : Voltage Comparator

TR1-TR4: 트랜지스터 VR1: 가변저항TR 1 -TR 4 : Transistor VR 1 : Variable resistor

D1: 제너다이오드D 1 : Zener Diode

본 고안은 전압비교기를 이용하여 0 볼트로부터 가변가능한 정전압트래킹 전원회로에 관한 것으로, 이것은 특히 전압비교기를 이용하여(+)(-)측 전원가변을 동시에 이루어지게 하는 단일전압 조정으로 (+)(-)측의 전압가변 오차를 줄이는데 적당하도록 한 트래킹 정전압 전원장치에 관한 것이다.The present invention relates to a constant voltage tracking power supply circuit that is variable from zero volts using a voltage comparator, which is a single voltage regulation that allows the power comparator to be made simultaneously using a voltage comparator. The present invention relates to a tracking constant voltage power supply suitable for reducing a voltage variation error on the negative side.

종래의 정전압 전원장치는 도면 제1도에서와 같이(+)(-)측에 정류부(10)(20)와 제어부(30)(40)와 비교부(50)(60)를 같은 형태로 갖는 2중화 회로로 구성되어 있으며 이러한 전원장치에서는 입력되는 교류 전원을 정류뷰(10)(20)에서 각각 +,-의 직류로 변환한 다음 비교부(50)(60)에서 기준전압에 의해 비교되는 차의 전압을 제어부(30)(40)에 가하여 출력전압을 제어하고 이때 (+)측과 (-)측은 동일한 회로를 사용하며 동작특성도 동일하나 극성이 반대로 된다.Conventional constant voltage power supply device has a rectifier 10, 20, the control unit 30, 40 and the comparator 50, 60 in the same form as shown in Figure 1 (+) (-) side In the power supply device, the input AC power is converted into a direct current of + and-in the rectifying views 10 and 20, and then compared by the reference voltage in the comparator 50 and 60. The output voltage is controlled by applying a difference voltage to the controllers 30 and 40. At this time, the (+) side and the (-) side use the same circuit and have the same operation characteristics but the polarity is reversed.

그러나 상기(+)(-) 정전압 전원장치 (+)측 비교부(50)의 전압 조정가변저항(VR1)과 (-)측 비교부(60)의 전압조정가변처항(VR2)을 각각 조정해야하는 번거로움이 있으며, 전압을 세팅할때에도 (+)측과 (-)측의 전압이 불균일하게 출력되는 점이 있고, 또한 기준전압회로에 제너다이오드를 사용하기 따문에 0 볼트부터 가변이 되지 않으며, 또 전원부를 제조시(+)(-)측의 부품이 이중으로 들어가서 제조원가가 높아지는 단점이 있었다.However, the (+) (-) constant-voltage power supply (+) side of the comparison unit 50, the voltage adjusting variable resistor (VR 1) and the (-) for the voltage adjusting variable cheohang (VR 2) on the side of the comparison unit 60, respectively, There is a hassle to adjust, there is a point that the voltage on the (+) side and (-) side is unevenly output even when setting the voltage. Also, since the zener diode is used in the reference voltage circuit, it cannot be changed from 0 volts. In addition, the manufacturing part of the power supply unit (+) (-) side has a disadvantage in that the manufacturing cost is increased by double.

본 고안은 상기의 문제점들을 개선하기 위해 안출한 것으로서, 이것은 특히 조정가능한 레귤레이터와 부전원레귤레이터를 이용하여 비교전압을 0 볼트부터가변가능한 전원 회로를 구성하면서 동시에 상기 전원회로의 (+)측과 반대되어 작동되는 부분에 전압비교기를 이용하므로써 (+)전원과 동시 가변 가능한 부전원을 얻을 수 있게 하는 전원트래킹 회로를 특징으로 하는 것으로서, 이를 첨부도면에 의해상세히 설명하면 다음과 같다.The present invention has been devised to solve the above problems, and this is in particular the configuration of a power supply circuit whose variable voltage can be changed from 0 volts using an adjustable regulator and a negative power supply regulator, while at the same time opposite to the positive side of the power supply circuit. It is characterized by a power tracking circuit that can be obtained by using a voltage comparator in the operating part to be able to simultaneously (+) power supply and a variable power supply, which will be described in detail by the accompanying drawings.

즉 도면 제2도에서와 같이 교류전원(AC)을 (+)(-)직류로 변환하기 위한 정류회로(1)의 (+)측에 기준전위의 조정이 가능한 레귤레이터(Adjustable Regulator:IC2)와 이 레굴레이터(IC2)로 제어되는 스위칭 트랜지스터(TR1)를 연결하고, 상기 정류회로(1)의 (-)측에 부전원레귤레이터(IC1)를 연결하여 그(-)전원을 제너다이오드(D1)와 가변저항(VR1)에 의해 상기 조정가능한 레귤레이터의 기준단자(VREF)에 공급되게 하여서 (+)전원회로(A)를 구성하며, 한편 상기 스위칭 트랜지스터(TR1)로 출력되는 (+)측 전원을 기준전압(VGND)으로 비교하는 전압기교기(IC3)를 사용하여 상기 정류회로(1)의 (-)측 전원을 스위칭하는 스위칭 트랜지스터(TR2)를 제어하게 하여 (-)전압을 얻는 (-)전원회로(B)의 구성으로 한다.That is, as shown in FIG. 2, a regulator capable of adjusting the reference potential on the (+) side of the rectifying circuit 1 for converting the AC power source (+) to (+) (-) direct current (Adjustable Regulator: IC 2 ). by connecting the sub-power regulator on the side (IC 1) that - with the regul concentrator (IC 2) connected to a switching transistor (TR 1) controlled and of the rectifier circuit (1) () (-) Zener power a diode (D 1) and hayeoseo by a variable resistor (VR 1) to be supplied to the reference terminal (VREF) of the adjustable regulator (+) constitute the power supply circuit (a), while output to the switching transistor (TR 1) The switching transistor TR 2 for switching the negative power of the rectifier circuit 1 is controlled by using a voltage comparator IC 3 that compares the positive power to the reference voltage VGND. It is set as the structure of the negative power supply circuit B which acquires a negative voltage.

그리고 상기 스위칭 출력보호를 위한 보호회로로서 트랜지스터(TR2)(TR1)가 구비된다.In addition, a transistor TR 2 (TR 1 ) is provided as a protection circuit for the switching output protection.

이와 같이 구성되는 본 고안의 동작은 다음과 같다.The operation of the present invention configured as described above is as follows.

우선 교류입력(AC)으로 부터 정류회로(1)를 거쳐(+)(-)의 직류전원을 얻게되면 입력된 (+)측 직류전원은 기준전위 조정이 가능한 레귤레이터(IC2)와 가변저항(VR1)으로 설정된 정전압 전원으로 출력제어 기능을 하는 스위칭 트랜지스터(TR1)에 의해 제어되어 (+)측으로 출력하게 된다.First, if the DC power of (+) (-) is obtained from the AC input (AC) through the rectifier circuit (1), the input (+) side DC power supply is the regulator (IC 2 ) and the variable resistor ( VR 1 ) is controlled by the switching transistor TR 1 having an output control function to output a positive voltage to the (+) side.

이때 기준전원 조정이 가능한 레귤레이터(IC2)의 기준전압(약1.2볼트)은 부전원 레귤레이터(IC1)와 제너다이오드(D1)에 의해 음전위(-1.2볼트)로 떨어져서 그 기준전압은 0 볼트까지 내려가게 되므로 (+)측에서 얻어지는 출력을 0 볼트로부터 가변가능하게 되는 것이다.At this time, the reference voltage (approximately 1.2 volts) of the regulator (IC 2 ) that can adjust the reference power is dropped to the negative potential (-1.2 volts) by the negative power regulator (IC 1 ) and the zener diode (D 1 ), and the reference voltage is 0 volts. As it goes down, the output obtained from the (+) side becomes variable from 0 volts.

한편 상기에서 가변저항(VR1)및 레귤레이터(IC1)에 의해 (+)측으로 전위가 가변되면 기준출력점인 접지단(VGND)에서는 그에 상응하는(-)측 전위가 발생하게 되므로 전압비교기(IC2)에 의해 (+)측 출력전압을 접지와 비교하여 그 차(음전위)를 검출하여 (-)측 제어기인 트랜지스터(TR2)에 전압을 걸어 음전위를 제어하게 하므로써 (+)측과 정반대인 (-)전압을 얻게 되는 것이다.On the other hand, if the potential is changed to the (+) side by the variable resistor VR 1 and the regulator IC 1 , a corresponding (−) side potential is generated at the ground terminal VGND which is a reference output point. IC 2 ) compares the positive output voltage with ground, detects the difference (negative potential), and applies negative voltage to transistor (TR 2 ), a negative controller, to control the negative potential. You will get a negative voltage.

따라서 본 고안은 기준전위 조정이 가능한 레귤레이터를 부전원 레률레이터로 단속하여 0 볼트로부처 가변이 가능하므로 다양한 전원부하에 사용가능하고 또, 하나의 가변저항기로 (+)(-) 전원을 동시에 가변할 수 있으므로 조작이 간편하고 윤용도중 (+)측과 (-)측의 전원 평형을 쉽게 유지할 수 있는 유용한 고안인 것이다.Therefore, the present invention can be used for various power loads because the regulator which can adjust the reference potential is controlled by the negative power regulator and can be changed to 0 volts, and it is possible to simultaneously change the positive and negative power with one variable resistor. It is easy to operate and it is a useful design that can easily maintain the power balance of (+) side and (-) side during lubrication.

Claims (1)

0 볼트부터 가변하는 트래킹 전원장치에 있어서, 기준전위가 조정되는 레귤레이터(IC2)의 기준전압 조정단자(VREF)에 제너다이오드(D1)와, 가변저항(VR1)을 통해 부전원 레귤레이터(IC1)의 (-)전원을 공급하여 비교전위를 0 볼트로부터 동작되도록 하여 (+)측 출력제어기인 트랜지스터(TR1)를 제어하도록 연결하여서된 (+)전원회로(A)와, 상기 가변저항(VR1)으로 동시 가변되게 하기위해 (+)전원회로(A)의 출력에 반대되어 작동되는 부분에 전압비교기(IC2)를 연결하여 그 전압차로 (-)측 출력제어기인 트랜지스터(TR3)를 제어하도록 연결하여서 된 (-)전원회로 (B)로 구성되는 것을 특징으로 하는 정전압 트래킹 전원회로.In the tracking power supply device from zero volt variable, and the reference voltage adjusting terminal (VREF) of the regulator (IC 2) that the reference potential is adjusted a Zener diode (D 1), the sub-power regulator through a variable resistor (VR 1) ( (+) Power supply circuit (A) connected to supply transistor (-) of IC 1 to operate the comparison potential from 0 volt to control transistor (TR 1 ), which is a (+) output controller, and the variable Connect the voltage comparator (IC 2 ) to the part that is operated opposite to the output of the positive power supply circuit (A) so as to be simultaneously variable with the resistor (VR 1 ), and the transistor (TR) which is the output controller of the negative (-) side with the voltage difference. 3 ) a constant voltage tracking power supply circuit comprising a (-) power supply circuit (B) connected to control.
KR92011935U 1992-06-30 1992-06-30 Constant voltage tracking power circuit KR940005922Y1 (en)

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KR92011935U KR940005922Y1 (en) 1992-06-30 1992-06-30 Constant voltage tracking power circuit

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Application Number Priority Date Filing Date Title
KR92011935U KR940005922Y1 (en) 1992-06-30 1992-06-30 Constant voltage tracking power circuit

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KR940001710U KR940001710U (en) 1994-01-03
KR940005922Y1 true KR940005922Y1 (en) 1994-08-29

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