KR870000655Y1 - Power circuit - Google Patents

Power circuit Download PDF

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Publication number
KR870000655Y1
KR870000655Y1 KR2019840011848U KR840011848U KR870000655Y1 KR 870000655 Y1 KR870000655 Y1 KR 870000655Y1 KR 2019840011848 U KR2019840011848 U KR 2019840011848U KR 840011848 U KR840011848 U KR 840011848U KR 870000655 Y1 KR870000655 Y1 KR 870000655Y1
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South Korea
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power
transistor
battery
voltage
turned
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KR2019840011848U
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KR860006771U (en
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한형덕
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삼성전자주식회사
정재은
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

내용 없음.No content.

Description

밧데리의 전원 온/오프회로Battery power on / off circuit

제1도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.

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

BAT : 밧데리 CP : 전압비교기BAT: Battery CP: Voltage Comparators

S1: 전원스위치 ZD1: 제너다이오드S 1 : power switch ZD 1 : zener diode

V0: 전원출력단V 0 : Power output terminal

본 고안은 휴대용 전자제품에 내장된 밧데리를 사용함에 있어서, 밧데리 전원이 규정치이하로 되면 전원이 차단되는 동시에 전원오프시 전원손실이 없도록 된 밧데리의 전원 온/오프회로에 관한 것이다.The present invention relates to a battery power on / off circuit in which the battery is cut off when the battery power falls below a specified value and there is no power loss when the power is turned off when the battery is built in a portable electronic product.

일반적으로 소형이나 휴대용전자제품을 동작시키기 위해서는 내장된 밧데리에 의해 각회로부에 전원을 공급하게 되는 데, 특히 RAM과 같은 기억소자를 포함하고 있는 전자제품에 있어서의 정규전원공급이 필수 적이며, 이를 위하여 충전밧데리의 전원을 보조전원으로 사용하는 장치가 많이 소개되어 있으나 대부분 간단한 전원스위칭소자만을 사용하여 주전원과 밧데리 전원을 절환시키는 경우가 있었다.In general, in order to operate small or portable electronic products, power is supplied to each circuit part by built-in batteries. In particular, regular power supply is essential for electronic products including memory devices such as RAM. For this purpose, many devices using a rechargeable battery power source as an auxiliary power source have been introduced, but in most cases, a main power source and a battery power source were switched using only a simple power switching device.

그런데 내장된 밧데리를 전원으로 사용하고 있는 소형이나 휴대용 전자제품에 있어서의 전원스위치를 오프상태로 놓아도 밧데리의 전원이 누설되고, 또 전원을 차단하고자 릴레이를 사용한 회로를 사용하여 전원을 각회로부에 공급하게 하였다.However, even when the power switch is turned off in small or portable electronic devices that use a built-in battery as a power source, the battery power leaks and power is supplied to each circuit using a circuit using a relay to shut off the power. It was made.

본 고안은 원터취스위치인 전원스위치를 사용하여 온(ON) 위치나 오프(OFF)위치에 일시적으로 접촉시켜 밧데리의 전원을 온/오프시켜 소형이나 휴대용전자제품을 동작시키는데, 먼저 전원스위치를 온하면 전압비교기의 출력전압이 하이상태로서 트랜지스터를 턴온시켜 밧데리의 전원을 전원출력단으로 공급하는 한편, 전원스위치가 오프상태나 밧데리의 전원이 규정치이하로 되면 전압비교기의 출력전압이 로우상태로서 트랜지스터를 턴오프시켜 밧데리의 전원을 전원출력단으로 공급하지 못하도록 된 밧데리의 전원 온/오프회로를 제공함에 고안의 목적이 있다.The present invention uses a power switch, a one-touch switch, to temporarily contact the ON or OFF position to turn on / off the power of the battery to operate small or portable electronic products. When the output voltage of the voltage comparator is high, the transistor is turned on to supply the battery power to the power output terminal.If the power switch is turned off or the battery power is lower than the specified value, the voltage comparator output voltage is low and the transistor is turned on. An object of the present invention is to provide a battery power on / off circuit that is turned off so that battery power cannot be supplied to a power output terminal.

이하 본고안의 구성 및 작용, 효과를 예시도면에 의거하여 설명하면 다음과 같다. 본 고안은 밧데리(BAT)에 병렬의 저항(R1)과 트랜지스터(TR1)의 에미터를 연결하고, 트랜지스터(TR1)의 베이스에는 저항(R2)을 매개하여 전원스위치(S1)의 ON 단자와 트랜지스터(TR2)의 콜렉터를 각각 연결하며, 트랜지스터(TR1)의 콜렉터에는 직병렬의 저항(R5~R7)과 제너다이오드(ZD1)를 매개하여 전압비교기(CP)와 전원스위치(S1)의 OFF단자를 연결하고, 전압비교기(CP)의 출력단에는 병렬의 저항(R3)(R4)을 매개하여 트랜지스터(TR2)의 베이스를 연결시킨 구조로 되어 있다.Hereinafter, the configuration, operation, and effect of the present disclosure will be described based on the exemplary drawings. The present invention connects the parallel resistor (R 1 ) and the emitter of the transistor (TR 1 ) to the battery (BAT), and the power switch (S 1 ) through the resistor (R 2 ) at the base of the transistor (TR 1 ). Connect the ON terminal of and the collector of transistor TR 2 , respectively, and the collector of transistor TR 1 is a voltage comparator (CP) through a series-parallel resistor (R 5 ~ R 7 ) and zener diode (ZD 1 ). And the OFF terminal of the power switch S 1 , and the base of the transistor TR 2 are connected to the output terminal of the voltage comparator CP through a parallel resistor R 3 and R 4 . .

미설명부호 V0는 전원출력단을 나타낸다. 제1도는 상기한 구조로 되어있는 본 고안의 회로도로서 밧데리(BAT)가 내장된 소형이나 휴대용전자제품을 동작시키기 위해 원터취스위치인 전원스위치(S1)를 온(ON) 하면 전원스위치(S1)는 순간적으로 온(ON)되었다가 오프되지만 밧데리(BAT)의 전압이 저항(R1)(R2)에서 전압강하에 의해 드라이버용트랜지스터(TR1)의 베이스전류를 공급하므로 트랜지스터(TR1)가 턴온되어 전원출력단(V0)을 통해 소형이나 휴대용전자제품의 각회로부에 전원이 공급되는 한편, 트랜지스터(TR1)를 통한 전압이 저항(R3)와 제너다이오드(ZD1)에 의한 기준전압이 전압비교기(CP)의 (-)단자에 입력되는 동시에 저항(R6)(R7)에 의한 밧데리(BAT)의 전압이 (+)단자에 입력되므로 전압비교기(CP)의 출력전압이 하이상태로서 저항(R3)(R4)을 통해 트랜지스터(TR2)의 베이스에 인가된다.Reference numeral V 0 denotes a power output terminal. FIG. 1 is a circuit diagram of the present invention having the above-described structure. When the power switch S 1 , which is a one-touch switch, is turned on to operate a small or portable electronic product with a built-in battery BAT, the power switch S 1 ) is momentarily turned on and off, but since the voltage of the battery BAT supplies the base current of the driver transistor TR 1 due to the voltage drop in the resistors R 1 and R 2 , the transistor TR 1 ) is turned on to supply power to each circuit of small or portable electronics through the power output terminal (V 0 ), while the voltage through the transistor (TR 1 ) is applied to the resistor (R 3 ) and the zener diode (ZD 1 ). Voltage is inputted to the negative terminal of the voltage comparator CP, and the voltage of the battery BAT by the resistor R 6 and R 7 is input to the positive terminal. voltage is applied to the base of the transistor (TR 2) via a resistor (R 3) (R 4) a high level The.

그러면, 트랜지스터(XR2)는 턴온되어 트랜지스터(TR1)의 베이스전류를 공급하므로 밧데리(BAT)의 전원이 트랜지스터(TR1)의 에미터콜렉터를 통해 전원출력단(V0)에 공급되고 이로부터 소형이나 휴대용전자제품이 계속 동작된다.Then, the transistor (XR 2) is turned on is supplied to the base current of the transistor (TR 1) is supplied to the power output terminal (V 0) via the emitter-collector of the transistor (TR 1) the power of the battery (BAT) from which Small and portable electronics continue to operate.

한편, 사용자가 원터취스위치인 전원스위치(S1)를 오프(OFF)하면 트랜지스터(TR1)의 에미터-콜렉터를 통해 전원출력단(V0)으로 공급되던 밧데리(BAT)의 전원이 저항(R5)을 통해 전원스위치(S1)로 공급되므로 전압비교기(CP)의 (+)단자가 접지되고, 이에 따라 전압비교기(CP)의 출력신호가 로우상태로 저항(R3)(R4)을 통해 트랜지스터(TR2)의 베이스에 인가되어 턴오프되므로 트랜지스터(TR1)도 턴오프되어 전원출력단(V0)에 밧데리(BAT) 전원이 공급되지 않는다. (여기서 트랜지스터(TR2)의 콜렉터-에미터를 통한 미소누설전류이외에는 전원손실이 거의없음)On the other hand, when the user turns off the power switch S 1 , which is a one-touch switch, the power of the battery BAT supplied to the power output terminal V 0 through the emitter-collector of the transistor TR 1 becomes a resistor ( Since the positive terminal of the voltage comparator CP is grounded since the power is supplied to the power switch S 1 through R 5 ), the output signal of the voltage comparator CP is low and the resistor R 3 (R 4 ) is lowered. Since the transistor TR 1 is applied to the base of the transistor TR 2 and turned off, the transistor TR 1 is also turned off so that the battery BAT power is not supplied to the power output terminal V 0 . (There is almost no power loss except for the micro leakage current through the collector-emitter of the transistor TR 2 )

또한 전원출력단(V0)에 연결된 소형이나 휴대용전자제품의 전원으로 사용됨에 따라 밧데리(BAT) 전원이 점점 소모되어 규정치 이하로 되면 트랜지스터(TR1)의 에미터-콜렉터를 통한 규정치이하의 밧데리(BAT) 전원이 저항(R6)(R7)을 통해 전압비교기(CP)의 (+)단자에 공급되는 동시에 저항(R5)과 제너다이오드(ZD1)에 의한 기준전압이 전압비교기(CP)의 (-)단자에 인가되므로 전압비교기(CP)의 출력전압이 로우상태로서 저항(R3)(R4)을 통해 트랜지스터(TR2)의 베이스에 인가된다.In addition, when the battery (BAT) power is gradually consumed as it is used as a power source for small or portable electronic devices connected to the power output terminal (V 0 ), the battery is below the specified value through the emitter-collector of the transistor (TR 1 ). BAT) The power is supplied to the positive terminal of the voltage comparator CP through resistors R 6 and R 7 while the reference voltages of the resistor R 5 and the zener diode ZD 1 are converted into voltage comparators. Since the voltage is applied to the negative terminal of), the output voltage of the voltage comparator CP is applied to the base of the transistor TR 2 through the resistors R 3 and R 4 in a low state.

그러면, 트랜지스터(TR2)가 턴오프되므로 트랜지스터(TR1)도 턴오프되어 밧데리(BAT)의 전원이 전원출력단(V0)에 공급되지 않는다.Then, since the transistor TR 2 is turned off, the transistor TR 1 is also turned off so that the power of the battery BAT is not supplied to the power output terminal V 0 .

상기한 바와 같이 본고안은 원터취스위치인 전원스위치를 사용하여 온위치나 오프위치에서 일시적으로 접촉시켜 밧데리의 전원을 온/오프시키는 한편, 밧데리의 전원이 규정 이하로 되면 전원이 오프되고 또 전원오프시에는 트랜지스터의 콜렉터-에미터를 통한 미소누설전류이의 전원손실이 없는 장점이 있다.As described above, this paper uses a power switch, which is a one-touch switch, to temporarily turn on or off the battery by touching it in the on position or off position. When off, there is an advantage that there is no power loss of the micro leakage current through the collector-emitter of the transistor.

Claims (1)

밧데리(BAT)에 병렬의 저항(R1)과 트랜지스터(TR1)의 에미터를 연결하고, 트랜지스터(TR1)의 베이스에는 저항(R2)을 매개하여 전원스위치(S1)의 ON 단자와 트랜지스터(TR2)의 콜렉터를 각각연결하며, 트랜지스터(TR1)의 콜렉터에는 직병렬의 저항(R5~R7)과 제너다이오드(ZD1)를 매개하여 전압비교기(CP)와 전원스위치(S1)의 OFF단자를 연결하고, 전압비교기(CP)의 출력단에는 병렬의 저항(R3)(R4)을 매개하여 트랜지스터(TR2)의 베이스를 연결하여서 된 밧데리의 전원 온/오프회로.Connect the parallel resistor (R 1 ) and the emitter of the transistor (TR 1 ) to the battery (BAT), and the ON terminal of the power switch (S 1 ) via the resistor (R 2 ) at the base of the transistor (TR 1 ). And the collector of transistor (TR 2 ), respectively, and the collector of transistor (TR 1 ) is connected to the voltage comparator (CP) and the power switch through a series of parallel resistors (R 5 to R 7 ) and zener diode (ZD 1 ). Connect the OFF terminal of (S 1 ) and connect the base of the transistor (TR 2 ) to the output terminal of the voltage comparator (CP) by parallel resistor (R 3 ) (R 4 ) Circuit.
KR2019840011848U 1984-11-21 1984-11-21 Power circuit KR870000655Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019840011848U KR870000655Y1 (en) 1984-11-21 1984-11-21 Power circuit

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Application Number Priority Date Filing Date Title
KR2019840011848U KR870000655Y1 (en) 1984-11-21 1984-11-21 Power circuit

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KR860006771U KR860006771U (en) 1986-06-25
KR870000655Y1 true KR870000655Y1 (en) 1987-02-21

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KR2019840011848U KR870000655Y1 (en) 1984-11-21 1984-11-21 Power circuit

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