CN205265930U - High sensitivity electron temperature control system - Google Patents
High sensitivity electron temperature control system Download PDFInfo
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- CN205265930U CN205265930U CN201521127735.7U CN201521127735U CN205265930U CN 205265930 U CN205265930 U CN 205265930U CN 201521127735 U CN201521127735 U CN 201521127735U CN 205265930 U CN205265930 U CN 205265930U
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Abstract
The utility model discloses a high sensitivity electron temperature control system, including resistance R1, chip IC1, triode V1, chip IC1, chip IC2 and heating pipe H, electric capacity C1 and 220V alternating current are connected to resistance R1's one end, and electric capacity C1's the other end, the port 1 that transient voltage restraines diode DW and rectifier bridge T are connected to resistance R1's the other end, and rectifier bridge T's port 3 is connected transient voltage and is restrained diode DW's the other end and the other end of 220V alternating current, rectifier bridge T's port 2 connecting resistance R2, resistance R3, diode D1's positive pole and triode V2's collecting electrode. The utility model discloses high sensitivity electron temperature control system has abandoned traditional thermistor and temperature sensor's design, utilize diode forward voltage drop along with the rising of temperature the linear principle that reduces, only use the cheap diode of price as temperature element, the thermometer measurement accuracy who produces, so have with low costs, stable performance and convenient to use's advantage.
Description
Technical field
The utility model relates to a kind of electronic temperature control system, specifically a kind of high sensitivity electronic temperature control system.
Background technology
Temperature control circuit is temperature regulating device common in daily life, all occupies extremely heavy in industrial production and average family lifeThe status of wanting, for example air-conditioning in family, electric heater, water dispenser etc., industrial reactor, constant temperature workshop and culture dish,Traditional temperature control circuit uses thermistor or temperature sensor as temperature control element more, and the precision of thermistor is lower, makesThe thermometer precision going out is low, and thermistor its resistance in the time that temperature is higher is very low, can cause its inner On current excessiveAnd burn, require high place inapplicable at some to temperature accuracy, and the precision of serviceability temperature sensor is very high, but priceHigh, increase cost of manufacture.
Utility model content
The purpose of this utility model is to provide a kind of high sensitivity electronic temperature control system, proposes to solve in above-mentioned background technologyProblem.
For achieving the above object, the utility model provides following technical scheme:
A kind of high sensitivity electronic temperature control system, comprises resistance R 1, chip IC 1, triode V1, chip IC 1, chip IC 2With heating tube H, one end of described resistance R 1 connects capacitor C 1 and 220V alternating current, and the other end of resistance R 1 connects electric capacityThe port one of the other end, transient voltage suppressor diode DW and the rectifier bridge T of C1, the port 3 of rectifier bridge T connects transient stateThe other end of voltage twin zener dioder DW and the other end of 220V alternating current, the port 2 contact resistance R2 of rectifier bridge T, electricityThe resistance anode of R3, diode D1 and the colelctor electrode of triode V2, port 4 ground connection of rectifier bridge T, another of resistance R 2The pin 1 of end contact resistance R5 and chip IC 1, emitter stage and the chip IC 1 of the other end connecting triode V1 of resistance R 5Pin 3, the base stage of the pin 4 connecting triode V1 of chip IC 1, the negative electrode of diode D1 connects diode D2, electricityThe resistance other end contact resistance R7 of R3 and the pin 3 of chip IC 2, the other end of the pin 4 contact resistance R7 of chip IC 2With the base stage of triode V2, the negative electrode contact resistance R4 of diode D2 and the colelctor electrode of triode V1, resistance R 4 anotherThe pin 1 of one end contact resistance R6 and chip IC 2, base stage and the chip IC 2 of the other end connecting triode V2 of resistance R 7Pin 4, the emitter stage of triode V2 connects heating tube H, the other end contact resistance R6 of heating tube H and ground, chipThe model of IC1 and chip IC 2 is LM321.
As preferred version of the present utility model: described diode D1 and diode D2 are silicon diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model high sensitivity electronic temperature control system is abandonedTraditional thermistor and the design of temperature sensor, utilize the rising of diode forward pressure drop temperature and linear reductionPrinciple, is only used cheap diode as temperature element, and the thermometer measure precision of producing, therefore has costLow, stable performance and advantage easy to use.
Brief description of the drawings
Fig. 1 is the circuit diagram of high sensitivity electronic temperature control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearlyChu, intactly description, obviously, described embodiment is only the utility model part embodiment, instead of wholeEmbodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisiteThe every other embodiment obtaining, belongs to the scope that the utility model is protected.
Refer to Fig. 1, a kind of high sensitivity electronic temperature control system, comprises resistance R 1, chip IC 1, triode V1, chipIC1, chip IC 2 and heating tube H, one end of described resistance R 1 connects capacitor C 1 and 220V alternating current, resistance R 1 anotherOne end connects the port one of the other end, transient voltage suppressor diode DW and the rectifier bridge T of capacitor C 1, the end of rectifier bridge TMouth 3 connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, and the port 2 of rectifier bridge T connectsThe anode of connecting resistance R2, resistance R 3, diode D1 and the colelctor electrode of triode V2, port 4 ground connection of rectifier bridge T,The other end contact resistance R5 of resistance R 2 and the pin 1 of chip IC 1, the other end connecting triode V1 of resistance R 5 sends outThe pin 3 of emitter-base bandgap grading and chip IC 1, the base stage of the pin 4 connecting triode V1 of chip IC 1, the negative electrode of diode D1 connectsMeet diode D2, the other end contact resistance R7 of resistance R 3 and the pin 3 of chip IC 2, the pin 4 of chip IC 2 connectsThe base stage of the other end of resistance R 7 and triode V2, the negative electrode contact resistance R4 of diode D2 and the current collection of triode V1The utmost point, the other end contact resistance R6 of resistance R 4 and the pin 1 of chip IC 2, the other end connecting triode V2 of resistance R 7Base stage and the pin 4 of chip IC 2, the emitter stage of triode V2 connects heating tube H, the other end of heating tube H connects electricityResistance R6 and ground, the model of chip IC 1 and chip IC 2 is LM321.
Diode D1 and diode D2 are silicon diode.
Operation principle of the present utility model is: the resistance-capacitance depressurization electricity of 220V line voltage through being made up of resistance R 1 and capacitor C 1Lu Houzai enters rectifier bridge T and is just carrying out rectification, and the DC voltage of being exported by 2 pin of rectifier bridge T is to circuit supply, and circuit is adoptedWith silicon diode D1 and D2, as temperature sensor, the temperature coefficient of silicon diode is 2mV/ DEG C. Chip IC 1 and V1 etc.Form constant-current source circuit, for D1 and D2 provide constant electric current. A2 is amplifier, by with the corresponding D1 of temperature and D2Voltage change is amplified to the level needing. Thereby control the conducting of triode V2, when temperature is lower, the conducting of triode V2Voltage is very large, and heating tube heating power is larger, and in the time that temperature is higher, the conducting voltage of triode V1 reduces, heating tubePower declines, and reaches the object of intelligent temperature control.
Claims (2)
1. a high sensitivity electronic temperature control system, comprises resistance R 1, chip IC 1, triode V1, chip IC 1, chipIC2 and heating tube H, is characterized in that, one end of described resistance R 1 connects capacitor C 1 and 220V alternating current, resistance R 1The other end connect the port one of the other end, transient voltage suppressor diode DW and rectifier bridge T of capacitor C 1, rectifier bridge TPort 3 connect the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port of rectifier bridge TThe anode of 2 contact resistance R2, resistance R 3, diode D1 and the colelctor electrode of triode V2, port 4 ground connection of rectifier bridge T,The other end contact resistance R5 of resistance R 2 and the pin 1 of chip IC 1, the other end connecting triode V1 of resistance R 5 sends outThe pin 3 of emitter-base bandgap grading and chip IC 1, the base stage of the pin 4 connecting triode V1 of chip IC 1, the negative electrode of diode D1 connectsMeet diode D2, the other end contact resistance R7 of resistance R 3 and the pin 3 of chip IC 2, the pin 4 of chip IC 2 connectsThe base stage of the other end of resistance R 7 and triode V2, the negative electrode contact resistance R4 of diode D2 and the current collection of triode V1The utmost point, the other end contact resistance R6 of resistance R 4 and the pin 1 of chip IC 2, the other end connecting triode V2 of resistance R 7Base stage and the pin 4 of chip IC 2, the emitter stage of triode V2 connects heating tube H, the other end of heating tube H connects electricityResistance R6 and ground, the model of chip IC 1 and chip IC 2 is LM321.
2. according to a kind of high sensitivity electronic temperature control system claimed in claim 1, it is characterized in that, described diode D1 andDiode D2 is silicon diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127735.7U CN205265930U (en) | 2015-12-29 | 2015-12-29 | High sensitivity electron temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127735.7U CN205265930U (en) | 2015-12-29 | 2015-12-29 | High sensitivity electron temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265930U true CN205265930U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521127735.7U Expired - Fee Related CN205265930U (en) | 2015-12-29 | 2015-12-29 | High sensitivity electron temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205265930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384951A (en) * | 2021-12-14 | 2022-04-22 | 安徽皖仪科技股份有限公司 | Constant temperature system for conductivity detector and control method |
-
2015
- 2015-12-29 CN CN201521127735.7U patent/CN205265930U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384951A (en) * | 2021-12-14 | 2022-04-22 | 安徽皖仪科技股份有限公司 | Constant temperature system for conductivity detector and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |