KR970010605B1 - Dc type power supply device - Google Patents

Dc type power supply device Download PDF

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Publication number
KR970010605B1
KR970010605B1 KR1019940024944A KR19940024944A KR970010605B1 KR 970010605 B1 KR970010605 B1 KR 970010605B1 KR 1019940024944 A KR1019940024944 A KR 1019940024944A KR 19940024944 A KR19940024944 A KR 19940024944A KR 970010605 B1 KR970010605 B1 KR 970010605B1
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South Korea
Prior art keywords
power
voltage
charging
power supply
input
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KR1019940024944A
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Korean (ko)
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KR960012671A (en
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허동영
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대우전자 주식회사
배순훈
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Priority to KR1019940024944A priority Critical patent/KR970010605B1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • H02M3/072—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate an output voltage whose value is lower than the input voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The dc power supply comprises; an ac power charging/discharging device that charges and discharges according to supplied ac input voltage; rectifying devices switching the input ac power and the discharge voltage of the ac power charging/discharging device and rectifying them; a smoothing device smoothing the discharge voltage of the ac power charging/discharging device; and a stabilizing device stabilizing the output voltage of the smoothing device and applying the voltage to the load. The invented dc power supply do not use a transformer and the output voltage is low, which results in light weight, low volume and low cost.

Description

직류형 전원공급장치DC power supply

제1도는 일반적인 직류형 전원공급장치의 구성을 보인 도면.1 is a view showing the configuration of a general DC power supply.

제2도는 본 발명에 따른 직류형 전원공급장치의 구성을 보인 도면.2 is a view showing the configuration of a direct current type power supply according to the present invention.

제3도는 제2도에 있어서, 각 부의 출력전압을 보인 파형도.FIG. 3 is a waveform diagram showing output voltages of respective parts in FIG.

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

11 : 교류 전원 충방전부 12 : 정형무11: AC power charging and discharging part 12: Hyeong-myung

13 : 평할부 14 : 안정화부13: flat part 14: stabilization part

L : 부하 D21,D22 : 다이오드L: Load D21, D22: Diode

본 발명은 직류형 전원공급장치에 관한 것으로서, 특히 출력전력이 낮고 전기적인 절연이 필요없는 경박탄소가 가능한 직류형 전원공급회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct current type power supply device, and more particularly, to a direct current type power supply circuit capable of light and thin carbon having low output power and requiring no electrical insulation.

일반적인 직류형 전원공급장치는 입력되는 교류전압을 변압기로 강압하여 정류회로, 평할회로, 안정화 회로를 통해 필요한 전압이 출력된다.In general DC power supply, the AC voltage inputted by the transformer is stepped down to output the required voltage through the rectifier circuit, the flat circuit, and the stabilization circuit.

즉, 일반적인 직류형 전원공급장치는 제1도에 도시된 바와같이, 입력되는 교류전원(AC)이 인가되어 2차측 코일에 전원이 인가되는 변압기(T)와, 변압기(T)의 2차측 코일에 여자된 전압을 전파 정류시키는 브리지 다이오드(BD)와, 브리지 다이오드(BD)에서 전파정류된 전압을 평할시키는 콘덴서(C1)와, 콘덴서(C)의 평할된 전압을 안정화시키는 레귤레이터(Rc)와, 레귤레이터(Rc)의 출력전압을 평할시킨 후 부하에 인가시키는 콘덴서(C2)로 구성된다.That is, in the general DC power supply device, as shown in FIG. 1, a transformer T to which an AC power input AC is applied to supply a power to a secondary coil, and a secondary coil of the transformer T are shown. A bridge diode BD for full-wave rectifying the excited voltage, a capacitor C1 for leveling the full-wave rectified voltage in the bridge diode BD, a regulator Rc for stabilizing the flattened voltage of the capacitor C, and And a capacitor C2 for applying the load to the load after leveling the output voltage of the regulator Rc.

이와같이 구성된 일반적인 직류형 전원공급장치에 있어서, 입력되는 교류전원(AC)이 인가되어 변압기(T)의 강압에 의해 2차측 코일에 여자되고, 2차측 코일에 여자된 브리지 다이오드(BD)에 인가되어 전파정류된다.In the general direct current type power supply configured as described above, the AC power input AC is applied and is excited to the secondary coil by the step-down of the transformer T, and is applied to the bridge diode BD excited to the secondary coil. It is full-wave rectified.

그리고, 브리지 다이오드(BD)에 의해 전파정류된 전압은 콘덴서(C1)에 의해 평할되고, 콘덴서(C1)의 평할된 전압은 레귤레이터(Re)에 인가되어 필요한 전원으로 변환된 후 안정화된다.The full-wave rectified voltage by the bridge diode BD is flattened by the capacitor C1, and the flattened voltage of the capacitor C1 is applied to the regulator Re to be converted into a required power source and then stabilized.

상기 레귤레이터(Re)에서 출력되는 전압은 콘덴서(C2)에 의해 평할된 후 부하에 인가되어 부하가 구동된다.The voltage output from the regulator Re is flattened by the capacitor C2 and then applied to the load to drive the load.

상기와 같이, 일반적인 직류형 전원공급장치는 변압기의 사용으로 무게가 무거울 뿐만 아니라 부피가 크고, 변환효율이 나쁘며, 부하에 인가되는 전압의 크기가 낮을 경우 전기적인 절연이 필요치 않더라도 전원공급장치의 효율을 높이기 위해 변압기를 반드시 사용하여야 하는 문제점이 있었다.As described above, the general DC power supply is not only heavy, heavy conversion efficiency, low conversion efficiency, and low power supply voltage, even if the electrical voltage is not required, the efficiency of the power supply device There was a problem that must use a transformer to increase the.

따라서, 본 발명은 이와같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 전기적인 절연이 필요없고 출력전력이 낮은 시스템을 위해 경박단소가 가능한 직류형 전원공급장치를 제공하고자 함에 있다.Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide a DC-type power supply capable of light and short and short for a system that does not require electrical insulation and low output power.

이와같은 본 발명의 목적은 입력되는 교류전원에 따라 충, 방전되는 교류전원 충방전부, 입력되는 교류전원 및 상기 교류전원 충방전부의 방전전압을 각각 반파 정류시키는 정류부, 교류전원 충방전부의 방전전압을 평할시키는 평할부와, 평할부의 출력전압을 일정하게 유지시켜 부하에 인가시키는 안정화부로 구성된 직류형 전원공급장치를 제공함으로써 달성될 수 있다.An object of the present invention as described above is the AC voltage charging and discharging unit for charging and discharging according to the input AC power, the rectifying unit for half-wave rectifying the discharge voltage of the input AC power and the AC power charging and discharging unit, respectively, the discharge voltage of the AC power charging and discharging unit The flattening can be achieved by providing a direct current type power supply comprising a flattening portion and a stabilizing portion which maintains the output voltage of the flattening portion to be applied to the load.

이하 본 발명에 따른 직류형 전원공급장치의 실시예를 첨부된 도면에 의거하며 보다 상세하게 설명한다.Hereinafter, an embodiment of a direct current type power supply device according to the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 따른 직류형 전원공급장치의 구성을 보인 도면으로서, 이에 도시된 바와같이, 콘덴서로 구성되어 입력되는 교류전원(Ac)을 충, 방전시키는 교류전원 충방전부(11)와, 다이오드(D21)(D22)로 구성되어 입력되는 교류전원(AC) 및 상기 교류전원 충방전부(11)의 방전전압을 각각 반파정류시키는 정류부(12), 콘덴서로 구성되어 교류전원 충방전부(11)의 방전전압을 평할시키는 평할부(13)와, 제너 다이오드로 구성되어 상기 평할부(13)의 출력전압을 일정하게 유지시켜 부하(L)에 인가시키는 안정화부(11)로 구성된다.2 is a view showing a configuration of a DC-type power supply device according to the present invention, as shown in the AC power charging and discharging unit 11 for charging and discharging the AC power (Ac) is composed of a capacitor, and AC power supply and discharge unit 11 composed of a diode (D21) and a D22, a rectifying unit (12) for half-wave rectifying the discharge voltage of the AC power supply and discharge unit (11) and a capacitor, respectively. And a stabilization section 11 composed of a zener diode and a stabilization section 11 for maintaining a constant output voltage of the flattening section 13 and applying it to the load L.

이와같이 구성된 본 발명에 따른 직류형 전원공급장치에 있어서, 우선, 제3도에 도시된 구간(T1) 동안 입력되는 교류전원(AC)은 교류전원 충방전부(11)의 콘덴서에 방전되고, 콘덴서의 방전이 완료된 후에는 교류전원 충방전부(11)의 방전전압(Vc)은 정류부(12)의 다이오드(D21)에 인가되어 다이오드(D21)이 도통된다.In the DC power supply according to the present invention configured as described above, first, the AC power AC input during the section T1 shown in FIG. 3 is discharged to the capacitor of the AC power charge / discharge unit 11, and the After the discharge is completed, the discharge voltage Vc of the AC power charging / discharging unit 11 is applied to the diode D21 of the rectifying unit 12 to conduct the diode D21.

즉, 교류전원 충방전부(11)의 방전전압(Vc)은 다이오드(D21)를 통해 평할부(13)의 콘덴서에 인가됨과 동시에 부하(L)에 인가되어 제3도에 도시된 바와같이, 입력되는 교류전원(AC)에 대해 평할부(13)의 충전전압(Vc) 만큼 낮게 부하(L)에 인가된다.That is, the discharge voltage Vc of the AC power charging and discharging unit 11 is applied to the capacitor of the flat portion 13 through the diode D21 and simultaneously applied to the load L, so that the input as shown in FIG. It is applied to the load L as low as the charging voltage (Vc) of the flat portion 13 with respect to the alternating current (AC).

한편, 시간이 경과하여 제3도에 도시된 구간(T2)이 되어 평할부(13)의 충전이 완료되어 교류전원 충방전부(11)의 충전전압(Vc)과 평할부(13)의 충전전압(Vc)이 입력되는 교류전원(AC)보다 높게 되면, 정류부(12)의 다이오드(D21)가 차단되고, 교류전원 충방전부(11)의 충전전압(Vc)가 입력되는 교류전압(AC) 보다는 낮으므로 정류부(12)의 다이오드(D22)도 차단된다. 즉, 교류전원 충방전부(11)의 충전전압(Vc)는 제3도에 도시된 바와같이, 그대로 유지된다.On the other hand, as time elapses, the section T2 shown in FIG. 3 is completed, and the charging of the flat portion 13 is completed, so that the charging voltage Vc of the AC power charging / discharging portion 11 and the charging voltage of the flat portion 13 are completed. When Vc is higher than the AC power input AC, the diode D21 of the rectifying unit 12 is cut off, and the charging voltage Vc of the AC power charging / discharging unit 11 is lower than the AC voltage AC input. Since it is low, the diode D22 of the rectifying part 12 is also cut off. That is, the charging voltage Vc of the AC power charging / discharging unit 11 is maintained as shown in FIG.

또한, 시간이 경과하여 제3도에 도시된 구간(T3) 동안 입력되는 교류전원(AC)이 교류전원 충방전부(11) 에 충전전압(Ve) 보다 낮아지면, 정류부(12)의 다이오드(D22) 가 도통되므로, 교류전원 충방전부(11) 의 충전전압(Vc)이 제3도에 도시된 바와같이 감소하게 된다.In addition, when time passes and the AC power AC input during the section T3 shown in FIG. 3 is lower than the charging voltage Ve in the AC power charging / discharging unit 11, the diode D22 of the rectifying unit 12 may be ) Is conducted, the charging voltage (Vc) of the AC power charging and discharging portion 11 is reduced as shown in FIG.

그리고, 시간이 다시 경과되어 제3도에 도시된 구간(T4)가 되면, 입력되는 교류전원(AC)이 다시 증가되어 정류부(12)의 다이오드(D22)가 차단되므로, 교류전원 충방전부(11)의 충전전압(Ve)은 제3도에 도시된 바와같이, 일정하게 유지된다.When the time elapses again and becomes the section T4 shown in FIG. 3, the input AC power AC is increased again to cut off the diode D22 of the rectifier 12, and thus the AC power charge / discharge unit 11 The charging voltage Ve of Fig. 3) is kept constant, as shown in FIG.

즉, 상기 교류전원 충방전부(11)의 충전전압(Vc)는 입력되는 교류전원(AC)과 평할부(13)의 충전전압(Vc) 차로 그대로 유지되며, 부하(L)에 인가되는 전압은 안정화부(14)의 제너 다이오드에 의해 일정하게 유지된다.That is, the charging voltage Vc of the AC power charging / discharging unit 11 is maintained as the difference between the AC power AC input and the charging voltage Vc of the flat part 13, and the voltage applied to the load L is It is kept constant by the zener diode of the stabilization part 14.

상기에서 설명한 바와같이, 본 발명에 따른 직류형 전원공급장치에 있어서, 입력되는 교류전원(AC)이 증가하기 시작하면, 교류전원 충방전부(11)의 콘덴서의 충전전압(Vc)는 정류부(12)의 다이오드(D21)를 통해 평할부(13)의 콘덴서에 인가됨과 동시에 부하(L)에 인가되고, 입력되는 교류전원(AC)이 감소하게 되어 교류전원 충방전부(11)의 콘덴서의 충전전압(Vc)과 같게 되면, 정류부(12)의 다이오드(D22)가 도통되므로 교류전원 충방전부(11)의 충전전압(Vc)이 입력되는 교류전원(AC)과 동일하게 감소하게 된다.As described above, in the direct current type power supply device according to the present invention, when the input AC power AC starts to increase, the charge voltage Vc of the capacitor of the AC power charge / discharge unit 11 is rectified. It is applied to the capacitor of the flat portion 13 through the diode (D21) at the same time is applied to the load (L), the input AC power AC is reduced to the charging voltage of the capacitor of the AC power charging and discharging unit 11 When it becomes equal to (Vc), the diode (D22) of the rectifying section 12 is turned on, so that the charging voltage (Vc) of the AC power charging and discharging unit 11 is reduced in the same manner as the AC power source AC is input.

이상에서 설명한 바와 같이, 본 발명에 직류형 전원공급장치는 변압기를 사용하지 않고, 부하가 필요한 전원이 저전압이 출력되므로, 가벼우며 부피가 작고, 가격이 저렴한 효과가 있다.As described above, the DC-type power supply device according to the present invention does not use a transformer, and since a low voltage is outputted from a power source requiring a load, there is an effect that is light, small in volume, and low in price.

Claims (2)

입력되는 교류전원에 따라 충·방전되는 교류전원 충방전 수단과, 상기 입력되는 교류전원 및 상기 교류전원 충방전 수단의 방전전압을 각각 스위칭시킨 후 정류시키는 정류수단과, 상기 교류전원 충방전 수단의 방전전압을 평할시키는 평할 수단과, 상기 평할수단의 출력전압을 일정하게 유지시켜 부하에 인가시키는 안정화 수단으로 구성됨을 특징으로 하는 직류형 전원공급장치.AC power charging and discharging means charged and discharged according to the input AC power, rectifying means for rectifying after switching the discharge voltage of the input AC power and the AC power charging and discharging means, respectively, and the AC power charging and discharging means And a stabilization means for leveling the discharge voltage and a stabilization means for maintaining a constant output voltage of the leveling means and applying it to a load. 제 1 항에 있어서, 교류전원 충방전 수단은 입력되는 교류전원에 따라 충방전되는 콘덴서로 구성됨을 특징으로 하는 직류형 전원공급장치.The direct current type power supply according to claim 1, wherein the AC power charging / discharging means is composed of a capacitor charged and discharged according to the input AC power.
KR1019940024944A 1994-09-30 1994-09-30 Dc type power supply device KR970010605B1 (en)

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KR970010605B1 true KR970010605B1 (en) 1997-06-28

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