KR900003374Y1 - Checking circuit of thermometer using thermistor - Google Patents
Checking circuit of thermometer using thermistor Download PDFInfo
- Publication number
- KR900003374Y1 KR900003374Y1 KR2019860022023U KR860022023U KR900003374Y1 KR 900003374 Y1 KR900003374 Y1 KR 900003374Y1 KR 2019860022023 U KR2019860022023 U KR 2019860022023U KR 860022023 U KR860022023 U KR 860022023U KR 900003374 Y1 KR900003374 Y1 KR 900003374Y1
- Authority
- KR
- South Korea
- Prior art keywords
- transistor
- led
- resistor
- emitting diode
- dummyster
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 특정온도 검지회로도.1 is a specific temperature detection circuit diagram of the present invention.
*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
가 : 휘스톤브리지 나 : 차동증폭기A: Wheatstone Bridge B: Differential amplifier
Th : 더미스터 Vr : 가변저항Th: Dummyster Vr: Variable resistor
TR1, TR2: 트랜지스터 LED1, LED2: 발광다이오드TR 1 , TR 2 : Transistor LED 1 , LED 2 : Light Emitting Diode
R1-R8: 저항R 1 -R 8 : resistance
본 고안은 더미스터를 이용한 특정온도 검지회로에 관한 것으로 특히 더미스터와 가변저항을 이용한 휘스톤 브리지에 차동증폭기를 연결하여 차동증폭기의 온, 오프 동작으로 발광 다이오드를 점등시켜 줌으로써 특징은 도를 검지할 수 있도록한 특정온도 검지회로에 관한 것이다.The present invention relates to a specific temperature detection circuit using a dummyster. In particular, a differential amplifier is connected to a Wheatstone bridge using a dummyster and a variable resistor to turn on a light emitting diode by turning on and off the differential amplifier. It relates to a specific temperature detection circuit that enables it.
종래의 특정온도 검지회로는 회로구성이 복잡하고, 이에 따른 부품수 증가를 인하여 기기의 가격을 상승시키는 문제점을 가지고 있어 실용적이지가 못한 결점이 있었다.The conventional specific temperature detection circuit has a drawback that is not practical because of the complicated circuit configuration and the increase in the number of parts due to the increase in the number of parts.
본 고안은 상기와 같은 결점을 해결하기 위하여 휘스톤 브리지에 더미스터를 연결하여 더미스터의 온도에 따른 저항값의 변화를 어떤 특정한 온도로 설정하여 이 설정된 온도에서 민감하게 변화하는 온도를 포착하는 휘스톤브리지와 차동증폭기를 이용해서 특정온도를 검지할 수 있게한 것으로, 이하 첨부된 도면에 의하여 본 고안을 상세히 설명하면 다음과 같다.The present invention connects the dummyster to the Wheatstone bridge in order to solve the above-mentioned drawback, and sets the change of the resistance value according to the dummyster temperature to a certain temperature to capture the temperature that changes sensitively at this set temperature. By using a stone bridge and the differential amplifier to detect a specific temperature, the present invention will be described in detail by the accompanying drawings as follows.
더미스터(Th) 저항(R2)(R1) 가변저항(VR)으로 구성된 휘스톤브리지(가)의 접점(C)은 저항(R5)을 통하여 전원단자(Vcc)에 연결하고 휘스톤브리지(가)의 접점(A)은 트랜지스터(RT1)(TR2) 저항(R6)(R7)(R8) 발광다이오드(LED1) (LED2)로 구성된 차동증폭기(나)의 트랜지스터(TR1)의 베이스단자에 연결하며 상기 휘스톤브리지(가)의 접점(B)은 차동증폭기(나)의 트랜지스터(TR2)의 베이스단자에 연결하여 된것으로 상기와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.The MR (Th), resistor (R 2) (R 1), contact (C) of the Wheatstone bridge (A) consisting of a variable resistor (VR) is connected to the power supply terminal (Vcc) through a resistor (R 5) and Wheatstone The contact point A of the bridge A is a transistor (RT) of a differential amplifier (I) consisting of a transistor (RT 1 ) (TR 2 ) resistor (R 6 ) (R 7 ) (R 8 ) light emitting diode (LED 1 ) (LED 2 ). contact point (B) of the transistor (TR 1) (a) connected to the base terminal and the Wheatstone bridge is of the subject innovation are configured as described above with doengeot connected to the base terminal of the transistor (TR 2) of the differential amplifier (B) The following describes the working effect.
먼저 휘스톤브리지(가)의 저항(R2)(R4)은 같은 저항 값으로 하고 가변저항(VR)과 더미스터(Th)는 실온에서 접점(B)보다 접점(A)의 전압이 더 걸리도록 설정하여 놓고 가변저항(VR)은 특정 온도에 맞도록 가변시켜 높은 다음 전원단자(Vcc)로부터 전원이 인가되면 전원은 저항(R5)(R4)을 통하여 트랜지스터(TR1)이 베이스 단자에 인가되고 이 인가된 전원에 의하여 차동증폭기(나)의 트랜지스터(TR1)는 온 되며 따라서 전원 단자(Vcc)의 전원은 저항(R6)을 통하여 트랜지스터(TR1) 및 저항(R5)에 인가되어 흘러나가게 되므로 발광다이오드(LED1)의 에노우드에는 저전위가 되어 발광다이오드(LED1)는 점등되지 않는 반면에 발광다이오드(LED2)의 에노우드에는 전원단자(Vcc)로부터 전원이 저항(R7)을 통하여 고전위가 인가되어 도통되면서 트랜지스터(TR1)로 흘러나가게 되어 발광다이오드(LED2)는 점등되어 정상 온도임을 알려주게 된다.First, the resistance (R 2 ) (R 4 ) of the Wheatstone Bridge is the same resistance value, and the variable resistor (VR) and the dummyster (Th) have a higher voltage at the contact point (A) than the contact point (B) at room temperature. If the power is applied from the next higher power supply terminal (Vcc), the power is supplied to the transistor (TR 1 ) through the resistor (R 5 ) (R 4 ). The transistor TR 1 of the differential amplifier I is turned on by the applied power supply and the power supply of the power supply terminal Vcc is turned on through the resistor R 6 and the transistor TR 1 and the resistor R 5. ) Is applied to the light emitting diode (LED 1 ), the low potential in the light emitting diode (LED 1 ) of the light emitting diode (LED 1 ) is not lit, while the light emitting diode (LED 2 ) in the anode, the power from the power supply terminal (Vcc) through this the resistance (R 7) as the conductive high potential is applied to spilled a transistor (TR 1) Out it is dropped is known that the light-emitting diode (LED 2) is on Normal temperature.
그 후 온도가 상승하여 특정온도에 도달하면 더미스터(Th)의 저항값은 낮아져 휘스톤브리지(가) 접점(B)을 통하여 차동증폭기(나)의 트랜지스터(TR2)의 베이스단자에 인가되어 트랜지스터(TR2)는 온되고 따라서 전원단자(Vcc)로부터 전원은 저항(R6) 발광다이오드(LED1) 트랜지스터(TR2)의 콜렉터 및 에미터단자 그리고 저항(R8)을 통하여 흘러나가게 되어 발광다이오드(LED1)는 점등되게되므로 회로가 특정온도 상태임을 알려 주게 되는 것이다.After that, when the temperature rises and reaches a specific temperature, the resistance value of the dummyster Th is lowered and is applied to the base terminal of the transistor TR 2 of the differential amplifier B through the Wheatstone bridge contact point B. Transistor TR 2 is turned on so that power from power supply terminal Vcc flows through the collector and emitter terminals of resistor R 6 light emitting diode LED 1 and transistor 2 and resistor R 8 . The light emitting diode (LED 1 ) is turned on to indicate that the circuit is in a specific temperature state.
이상에서 설명한 바와같이 본 고안 휘스톤브리지에 더미스터 및 가변저항을 이용하여 특정온도를 언제든지 맞추어서 특정 온도에서의 변화를 검지할 수 있으므로 온도변화를 이용하는 모든 기기에 광범위하게 사용할 수 있는 장점을 제공해줄 수 있는 것이다.As described above, it is possible to detect a change in a specific temperature by adjusting a specific temperature at any time by using a dummyster and a variable resistor in the Wheatstone bridge of the present invention, thus providing an advantage that it can be widely used in any device using a temperature change. It can be.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860022023U KR900003374Y1 (en) | 1986-12-30 | 1986-12-30 | Checking circuit of thermometer using thermistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860022023U KR900003374Y1 (en) | 1986-12-30 | 1986-12-30 | Checking circuit of thermometer using thermistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880012888U KR880012888U (en) | 1988-08-29 |
| KR900003374Y1 true KR900003374Y1 (en) | 1990-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860022023U KR900003374Y1 (en) | 1986-12-30 | 1986-12-30 | Checking circuit of thermometer using thermistor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900003374Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101225454B1 (en) * | 2011-06-16 | 2013-01-23 | 주식회사 코디에스 | Tamperature Measurement Device For Battery Pack |
-
1986
- 1986-12-30 KR KR2019860022023U patent/KR900003374Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101225454B1 (en) * | 2011-06-16 | 2013-01-23 | 주식회사 코디에스 | Tamperature Measurement Device For Battery Pack |
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| Publication number | Publication date |
|---|---|
| KR880012888U (en) | 1988-08-29 |
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