KR950003488Y1 - Power circuit for inrush current - Google Patents
Power circuit for inrush current Download PDFInfo
- Publication number
- KR950003488Y1 KR950003488Y1 KR2019900001700U KR900001700U KR950003488Y1 KR 950003488 Y1 KR950003488 Y1 KR 950003488Y1 KR 2019900001700 U KR2019900001700 U KR 2019900001700U KR 900001700 U KR900001700 U KR 900001700U KR 950003488 Y1 KR950003488 Y1 KR 950003488Y1
- Authority
- KR
- South Korea
- Prior art keywords
- power supply
- resistor
- inrush current
- triac
- circuit
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 트라이액(TRIAC) 2 : 스위칭용 전원(SMPS)1: TRIAC 2: Switching Power Source (SMPS)
3 : 부하 4 : 돌입 전류제한 회로3: load 4: inrush current limiting circuit
F : 휴즈 SW : 파워스위치F: Fuse SW: Power Switch
BD : 정류회로 R1-R3: 저항BD: Rectifier Circuit R 1- R 3 : Resistance
D : 다이오드 C : 콘덴서D: Diode C: Capacitor
TS : 트래스TS: Tras
본 고안은 각종 전자기기를 구동시키고자 전원을 인가할 때 순간적으로 발생하는 과전류로부터 전자기기를 보호할 수 있는 돌입전류제한회로에 관한 것이다.The present invention relates to an inrush current limiting circuit that can protect electronic devices from instantaneous overcurrent generated when power is applied to drive various electronic devices.
종래의 각종 전자기기 전원공급회로는 제1도에서와 같이 돌입전류 제한회로(4)를 사용치 않고 부하에 전원을 공급하였다.Various conventional electronic device power supply circuits supply power to a load without using the inrush current limiting circuit 4 as shown in FIG.
따라서 이러한 전원공급 회로는 인입되는 전압이 휴즈(F)와 파워스위치(SW)를 경유하여 정류회로(BD)에서 정류된후 저항(R1)으로 흐르고 콘덴서(C)에 의해 평탄한 직류전압이 출력되어 스위칭용 전원(2)을 구동시킴으로서 전자기기인 부하(3)를 동작시키게 되나 파워스위치(SW) 온(on)시에 순간적으로 발생하는 과전류에 기인되어 저항(R1)에는 상당한 열이 발생되므로 수와트(W)의 저항을 사용함으로서 전류 손실이 클 뿐만아니라 안정된 전류를 공급할 수 없는 문제점이 발생하게 된다. 따라서 본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서 일반적인 전원공급회로에 트라이액과 저항 및 다이오드로서 돌입전류 제한회로를 부가하여 순간적으로 발생되는 과전류로 부터 보호하고 안정된 전원을 공급함으로서 각종 전자 기기의 신뢰성 향상에 기여코져 하는데 본 고안의 목적이 있는 것이다.Therefore, such a power supply circuit flows into the resistor R 1 after the incoming voltage is rectified in the rectifying circuit BD via the fuse F and the power switch SW, and a flat DC voltage is output by the capacitor C. By driving the switching power supply 2 to operate the load (3), which is an electronic device, due to the overcurrent generated instantaneously when the power switch (SW) on (on) is generated a considerable heat generated in the resistor (R 1 ) Therefore, by using the resistance of several watts (W), not only the current loss is large, but also a problem that cannot supply a stable current occurs. Therefore, the present invention was devised to solve the above problems, and by adding inrush current limiting circuits as triacs, resistors, and diodes to general power supply circuits, it protects against overcurrent generated instantaneously and supplies stable power. The purpose of the present invention is to contribute to improving the reliability of the device.
이하 첨부된 도명에 의해 상세히 설명하면 다음과 같다.When described in detail by the accompanying drawings as follows.
제1도에서와 같이 휴즈(F) 파워스위치(SW) 정류회로(BD) 및 저항(R1), 스위칭용 전원(2), 그리고 트랜스(TS)로 이루어진 통상의 전원공급회로에 있어서 정류회로(BD)의 출력단자와 저항(R1) 사이에 트라이액(1) T2단자를 연결하고 상기 트라이액(1)의 게이트(G)측은 다이오드(D)와 저항(R3)을 거쳐 스위칭용 전원(2)의 일측단에 접속함과 동시에 저항(R2)을 통하여 트라이액(1)의 T1 단자와 스위칭용전원(2) 타측단에 연결한 돌입 전류제한회로(4)를 구성하여서된 것이다.As shown in FIG. 1, a rectifier circuit in a conventional power supply circuit including a fuse (F) power switch (SW) rectifier circuit (BD) and a resistor (R 1 ), a switching power supply (2), and a transformer (TS). The triac (1) T 2 terminal is connected between the output terminal of the (BD) and the resistor (R 1 ), and the gate (G) side of the triac (1) is switched through the diode (D) and the resistor (R 3 ). The inrush current limiting circuit 4 is connected to one end of the power supply 2 and connected to the T1 terminal of the triac 1 and the other end of the switching power supply 2 through a resistor R 2 . It is.
상기와 같은 구성으로 이루어진 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention made of the configuration as described above are as follows.
먼저 파워스위치(SW)를 접속하면 인입되는 전압이 정류회로(BD)에서 정류과정을 거쳐 초기에는 저항(R1)을 경유한후 콘덴서(C)에 의해 안정된 직류전압이 출력되어 스위칭용 전원(2)을 동작시키게 되면 상기 스위칭용전원(2)으로부터 네가티브(-)펄스가 출력되는데 이의 신호가 저항(R3)과 다이오드(D)를 통해 트라이액(1)의 게이트(G)단자가 인가하게 됨에 따라 트라이액(1)은 턴 온상태가 되어 정류회로(BD)의 출력 전압은 트라이액(1) T2단자에서 T1단자로 흘러 스위칭용전원(2)에 계속 공급하게 되므로 트랜스(TS)의 유기전압으로 인해 부하(3)가 동작한다. 따라서 저항(R1)에는 스위칭용전원(2)을 구동하는 초기전압만 흐르고 나머지는 트라이액(1)을 통해 스위칭용 전원(2)을 구동케 함으로서 순간적인 과전류에 의해 저항(R1)의 발열을 방지하여 전류손실을 없애고 부하(3)측에 안정된 전류를 공급할 수 있는 것이다.First, when the power switch (SW) is connected, the incoming voltage is rectified in the rectifier circuit (BD), and initially through the resistor (R 1 ), a stable DC voltage is outputted by the capacitor (C), thereby switching power supply ( When 2) is operated, a negative (-) pulse is output from the switching power supply 2 so that its signal is applied to the gate (G) terminal of the triac (1) through the resistor (R3) and the diode (D). As the triac (1) is turned on, the output voltage of the rectifier circuit (BD) flows from the triac (1) T 2 terminal to the T 1 terminal and is continuously supplied to the switching power supply (2). The induced voltage of) causes the load 3 to operate. Therefore, the resistance (R 1) has a resistance (R 1) by a momentary overcurrent remainder flows only the initial voltage for driving the switching power supply (2) is by Kane driving the power source (2) for switching through the triac (1) By preventing heat generation, current loss can be eliminated and stable current can be supplied to the load (3) side.
이상에서 상술한 바와같이 적용하는 본 고안은 일반적으로 사용되는 전원공급회로에 트라이액(1)과 저항(R2)(R3) 및 다이오드(D)로서 이루어진 돌입전류 제한회로(4)를 부가하여 저항(R1)의 발열로 인한 전류 손실을 없애고 부하(3)에 안정된 전원을 공급할 수 있는 유용한 고안인 것이다.The present invention applied as described above adds the inrush current limiting circuit (4) consisting of a triac (1), a resistor (R 2 ) (R 3 ) and a diode (D) to a commonly used power supply circuit. By eliminating the current loss due to the heating of the resistor (R 1 ) is a useful design that can supply a stable power to the load (3).
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900001700U KR950003488Y1 (en) | 1990-02-16 | 1990-02-16 | Power circuit for inrush current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900001700U KR950003488Y1 (en) | 1990-02-16 | 1990-02-16 | Power circuit for inrush current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910015956U KR910015956U (en) | 1991-09-25 |
| KR950003488Y1 true KR950003488Y1 (en) | 1995-05-02 |
Family
ID=19296017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900001700U KR950003488Y1 (en) | 1990-02-16 | 1990-02-16 | Power circuit for inrush current |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950003488Y1 (en) |
-
1990
- 1990-02-16 KR KR2019900001700U patent/KR950003488Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR910015956U (en) | 1991-09-25 |
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