KR830000555Y1 - Receiver overheating protection circuit - Google Patents

Receiver overheating protection circuit Download PDF

Info

Publication number
KR830000555Y1
KR830000555Y1 KR2019810008509U KR810008509U KR830000555Y1 KR 830000555 Y1 KR830000555 Y1 KR 830000555Y1 KR 2019810008509 U KR2019810008509 U KR 2019810008509U KR 810008509 U KR810008509 U KR 810008509U KR 830000555 Y1 KR830000555 Y1 KR 830000555Y1
Authority
KR
South Korea
Prior art keywords
transistor
receiver
protection circuit
overheating protection
temperature
Prior art date
Application number
KR2019810008509U
Other languages
Korean (ko)
Inventor
최종덕
Original Assignee
삼성전자공업주식회사
강진구
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자공업주식회사, 강진구 filed Critical 삼성전자공업주식회사
Priority to KR2019810008509U priority Critical patent/KR830000555Y1/en
Application granted granted Critical
Publication of KR830000555Y1 publication Critical patent/KR830000555Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0822—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in field-effect transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K2017/0806—Modifications for protecting switching circuit against overcurrent or overvoltage against excessive temperature

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Protection Of Static Devices (AREA)
  • Amplifiers (AREA)

Abstract

내용 없음.No content.

Description

수신기의 과열 보호회로Receiver overheating protection circuit

첨부된 도면을 본 고안의 회로도이다.The accompanying drawings are circuit diagrams of the subject innovation.

본 고안은 통상의 라디오, 텔레비젼등의 수신기에 이용되는 과열보호회로에 관한 것이다.The present invention relates to an overheat protection circuit used in a receiver such as a conventional radio, television.

종래에는 과전류로인하여 수신기회로의 전력트랜지스터 및 SCR등의 소자에 과열이 발생할 경우 별도의 단열판을 부착하여 이를 보호하기 위한 장치는 있었으나, 과열로인한 수신회로의 특정부위가 파손되는것을 방지하기위한 자동보호회로가 없었다.Conventionally, there has been a device for protecting a device by attaching a separate insulation plate when overheating occurs in a device such as a power transistor and an SCR of a receiver circuit due to overcurrent, but it is an automatic method for preventing a specific part of a receiving circuit from being damaged due to overheating. There was no protection circuit.

본 고안은 상기와 같은 수신기회로의 특정부위에 과전류등에 의하여 온도가 상승하여서 기기 및 소자의 수명이 단축되거나 파손됨을 방지하기 위하여 안출된 것으로 이를 상세히 설명하면 다음과 같다.The present invention has been devised to prevent the life of the device and the device is shortened or damaged due to an increase in temperature due to an overcurrent in a specific portion of the receiver circuit as described above.

본 고안의 구성은 특정온도가 상승되는 부위의 온도를 감지하기 위한 다이오드(D1)를 특정부위에 부착한후 트랜지스터(T1,T2)로 구성된 차동증폭기의 트랜지스터(T1)베이스에 연결하고, 트랜지스터(T2)의 콜렉터에는 트랜지스터(T3)의 베이스 및 에미터를 연결하며, 트랜지스터(T3)의 콜렉터에는 트랜지스터(T5)(T4)의 콜렉터 및 베이스에 각기 연결하고, 트랜지스터(T5)의 에미터에는 컨덴서(C1)과 저항(R1)을 거쳐 LED(D2)에 연결하고, 트랜지스터(T3)의 콜렉터에 트랜지스터(T7)의 에미터를 연결하며, 이의 콜렉터 및 베이스에는 각기 릴레이(Ry),LED(D2) 및 트랜지스터(T6)의 콜렉터를 연결하여서 구성되며, 트랜지스터(T1)의 콜렉터 및 베이스에는 직류+10V가 인가되고, 에미터에는 직류-22V, 저항(R1)의 일측단자는 교류 32V, 트랜지스터(T7)의 에미터는 직류 +45V를 인가한다.The structure of the present invention attaches a diode (D 1 ) for sensing the temperature of a specific temperature rising part to a specific part and connects it to the base of the transistor (T 1 ) of a differential amplifier composed of transistors (T 1 , T 2 ). and, a transistor (T 2) and the collector is connected to the base and emitter of the transistor (T 3), and the collector of the transistor (T 3) is respectively connected to the collector and base of the transistor (T 5) (T 4) , The emitter of the transistor T 5 is connected to the LED D 2 via a capacitor C 1 and a resistor R 1 , and the emitter of the transistor T 7 is connected to the collector of the transistor T 3 . The collector and its base are connected to the collectors of relay Ry, LED D 2 and transistor T 6 , respectively, and the collector and base of transistor T 1 is applied with direct current + 10V and emitter in the DC -22V, one terminal of the resistor (R1) is AC 32V, the transistor (T 7) It is applied to emitter DC + 45V.

이와같은 구성의 본 고안은 온도감지용 다이오드(D1)를 감지하고 자하는 특성부위에 부착하고 A점의 전위를 B점의 전위보다 원하는 온도에 상당하는 만큼 높게 조정하여 두면 평상시에는 트랜지스터(T1)가 동작하게 된다.The present invention of such a configuration is attached to a characteristic portion to sense the temperature sensing diode (D 1 ) and the potential of the point A is adjusted to correspond to the desired temperature higher than the potential of the point B so that the transistor (T) is normally used. 1 ) is activated.

이때, 수신기가 동작하므로서 다이오드(D1)가 부착된 부위의 온도가 상승하게되며, 이에따라 A점의 전위는 낮아지고 B점의 전위는 높아지게 된다.At this time, as the receiver operates, the temperature of the portion where the diode D 1 is attached increases, so that the potential of the point A is lowered and the potential of the point B is higher.

그러므로 온도감지용 다이오드(D1)가 부착된 부의의 온도가 기준치로 정해둔 온도보다 높아지면 B점의 전위가 A점의 전위보다 높게되어 트랜지스터(T2)가 동작한다. 트랜지스터(T2)가 동작하면 트랜지스터(T3,T4,T5)가 차례로 동작하고, 트랜지스터(T)는 OFF된다.Therefore, when the negative temperature to which the temperature sensing diode D 1 is attached becomes higher than the temperature set as the reference value, the potential of the point B becomes higher than the potential of the point A so that the transistor T 2 operates. When the transistor T 2 operates, the transistors T 3 , T 4 , and T 5 operate in sequence, and the transistor T is turned off.

그러므로 트랜지스터(T7) 또한 OFF되어, 교류 32V 전원이 LED(D2)에 인가되면서 불빛을 밝히고, 릴레이(RY)를 OFF시킨다.Therefore, the transistor T 7 is also turned off so that the AC 32V power is applied to the LED D 2 to illuminate the light and turn off the relay RY.

이때 릴레이(RY)에 의해 구동되는 스위치(S)를 스피커 입력단에 설치하여, 스피커 입력단이 오픈(open)됨으로 말미암아 수신기내부에 흐르는 전류가 급격히 감소되어 특정부위의 온도는 내려가고, 온도가 내려감에따라 A점의 전위가 올라가게되어, A점의 전위가 B점의 전위보다 높아질때 트랜지스터(T1)가 동작되어, 트랜지스터(T2)는 OFF, 트랜지스터(T3,T4,T5)가 OFF되며, 저항(R1) 및 컨덴서(C1)로 이뤄진 미분회로의 시정수기간이 지난후 트랜지스터(T6),(T7)가 동작하게되어LED (D2)가 꺼지면서 릴레이(RY)가 동작하게 되어 스위치(S)를 연결하므로 다시 정상동작을 진행하게 된다.At this time, the switch S driven by the relay RY is installed at the speaker input terminal, and the current flowing in the receiver is drastically reduced due to the speaker input terminal being opened, so that the temperature of the specific part is lowered and the temperature is lowered. As a result, the potential of the point A rises, and when the potential of the point A becomes higher than the potential of the point B, the transistor T 1 is operated so that the transistor T 2 is turned OFF and the transistors T 3 , T 4 , and T 5 . Is turned OFF, and after the time constant period of the differential circuit composed of resistor R 1 and capacitor C 1 , transistors T 6 and T 7 are operated so that LED D 2 turns off and relay RY ) Is activated and the switch (S) is connected so that the normal operation is performed again.

이때 수신기가 동작하는가 않는가의 여부를 LED(D2)에 의하여 확인할 수 있다.At this time, whether the receiver is operating or not can be confirmed by the LED (D 2 ).

이와같이 본 고안을 과열로인한 기기 및 전자소자에 부착하므로서 수신기의 특정부위가 과전류등에 따라 과열되어 파손하는것을 미연에 자동으로 방지할 수 있는 특징을 가진 것이다.Thus, by attaching the present invention to devices and electronic devices due to overheating, it is possible to automatically prevent certain parts of the receiver from being overheated and damaged by overcurrent.

Claims (1)

온도감지용 다이오드(D1)를 차동형증폭기(T1,T2)의 입력단(A)에 연결하고, 이 입력단(A,B)의 전압변화에 따라 트랜지스터(T3,T4,T5)가 동작하면서 트랜지스터(T6,T7)가 OFF되도록 연결하며, 이 동작으로 저항(R1), 컨덴서(C1)의 시정수 만큼 LED(D2)가 밝혀지거나 꺼지도록 연결하고, 또한 릴레이(RY)를OFF시켜서 스위치(S)를 끊도록 연결하여 저항(R1) 및 컨덴서(C1)의 시정수 기간이 끝난후 원상태로 릴레이(RY)를 복귀시켜 스위치(S)를 연결하도록 구성된 수신기의 과열보호회로.The temperature sensing diode (D 1 ) is connected to the input terminals (A) of the differential amplifiers (T 1 , T 2 ), and the transistors (T 3 , T 4 , T 5 ) according to the voltage change of the input terminals (A, B). the transistor while operating (T 6, T 7) that connects to oFF, the operation to the resistance (R 1), a capacitor as a time constant of (C 1) LED (D 2 ) is connected to be lit or turned off, and further relays It is configured to connect the switch S by returning the relay RY to the original state after the time constant period of the resistor R 1 and the capacitor C 1 is completed by connecting (RY) to turn off the switch S. Receiver overheating protection circuit.
KR2019810008509U 1981-12-15 1981-12-15 Receiver overheating protection circuit KR830000555Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019810008509U KR830000555Y1 (en) 1981-12-15 1981-12-15 Receiver overheating protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019810008509U KR830000555Y1 (en) 1981-12-15 1981-12-15 Receiver overheating protection circuit

Publications (1)

Publication Number Publication Date
KR830000555Y1 true KR830000555Y1 (en) 1983-04-13

Family

ID=19223527

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019810008509U KR830000555Y1 (en) 1981-12-15 1981-12-15 Receiver overheating protection circuit

Country Status (1)

Country Link
KR (1) KR830000555Y1 (en)

Similar Documents

Publication Publication Date Title
US5087871A (en) Power supply with inrush current limiter
KR910012851A (en) Integrated power level control and on / off function circuit
US4086503A (en) Control circuit initiating conduction of an opto-isolator unit
US3421005A (en) Ambient light controlled solid state relay
KR830000555Y1 (en) Receiver overheating protection circuit
US4841164A (en) Light-sensitive switch structure and method with inverse off/on ratio
CA1206639A (en) Current limiter for telephone signalling
US4149124A (en) Thermal protection of amplifiers
US3717796A (en) Relay power supply
GB2194108A (en) Circuit arrangement with a microprocessor
SU1238188A2 (en) Device for overload protection power source
US3549906A (en) Control circuit responsive to positive or negative transient signal or to power supply voltage decrease to fire scr
JPS56102124A (en) Electronic switch circuit
SU1679576A1 (en) Power supply source overload protection device
SU1649653A1 (en) Transistorized key
SU856001A1 (en) Timer
KR900009470Y1 (en) Overvoltage protective circuit
KR900004646Y1 (en) Loop current sensing circuit
SU1264329A1 (en) Switching device
RU1811001C (en) Transistorized switch
SU1520622A1 (en) Device for overload protection of power supply source from overloads and short circuits
SU1319247A1 (en) Device for current overload protection of load
SU1273905A1 (en) Bipolar voltage stabilizer
SU936160A1 (en) Device for overvoltage protection of electric power consumer
KR910004797Y1 (en) Over voltage protecting circuit