CN204595641U - A kind of high-precision temperature regulating circuit - Google Patents
A kind of high-precision temperature regulating circuit Download PDFInfo
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- CN204595641U CN204595641U CN201520311677.7U CN201520311677U CN204595641U CN 204595641 U CN204595641 U CN 204595641U CN 201520311677 U CN201520311677 U CN 201520311677U CN 204595641 U CN204595641 U CN 204595641U
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Abstract
The utility model discloses a kind of high-precision temperature regulating circuit, comprise transformer W, rectifier bridge T, relay J, button K and chip IC 1, one end of described relay J connects heating tube A, button K, the contact J-1 of relay J and the winding N1 of transformer W, the other end of button K connects the other end of the contact J-1 of 220V alternating current and relay J, and the other end of heating tube A connects a central electrode of bidirectional thyristor Q1.The utility model temperature regulation circuit structure is simple, components and parts are few, utilize high precision thermosensitive resistor MF51E as detector unit, improve control accuracy, and prevent repeatedly working of Near The Critical Point by the delay function of 555 time base circuits, circuit is also provided with Powercut self locking power function simultaneously, and circuit of sending a telegram here again after preventing power failure opens the waste of energy caused.
Description
Technical field
The utility model relates to a kind of temperature regulation circuit, specifically a kind of high-precision temperature regulating circuit.
Background technology
Temperature regulation circuit is electronic circuit common in daily life, is often applied to the household electrical appliance such as electric heater, electricity warm fan, air-conditioning.Most temperature regulation circuit uses common thermistor as detector unit in the market, and not only precision is lower, and easily produces switch repeatedly in the critical point of set temperature, and affect the serviceable life of electrical equipment, function is comparatively single.
Utility model content
The purpose of this utility model is to provide a kind of high-precision temperature regulating circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of high-precision temperature regulating circuit, comprises transformer W, rectifier bridge T, relay J, button K and chip IC 1, one end of described relay J connects heating tube A, button K, the contact J-1 of relay J and the winding N1 of transformer W, the other end of button K connects the other end of the contact J-1 of 220V alternating current and relay J, the other end of heating tube A connects a central electrode of bidirectional thyristor Q1, and another central electrode of bidirectional thyristor Q1 connects the other end of relay J, the other end of the winding N1 of transformer W and the other end of 220V alternating current, the control pole contact resistance R1 of bidirectional thyristor Q1, the other end of resistance R1 connects the anode of diode D1 and the pin 3 of chip IC 1, the other end contact resistance R4 of the negative electrode contact resistance R2 of diode D1, resistance R2, resistance R6, resistance R7, electric capacity C1, electric capacity C2, the anode of diode D2, the port 2 of rectifier bridge T and the pin 1 of chip IC 1, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 4 of rectifier bridge T connects the other end and the resistance R8 of electric capacity C2, the pin 2 contact resistance R3 of chip IC 1 and the other end of resistance R4, the other end contact resistance R5 of resistance R3, the other end of resistance R8, the negative electrode of diode D2, the anode of diode D3, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of other end contact resistance R6 of resistance R5 and the pin 6 of chip IC 1, the other end of resistance R7 connects the negative electrode of diode D3.
As preferred version of the present utility model: described chip IC 1 is NE555 type time base circuit.
As preferred version of the present utility model: described relay J is normally opened contact relay.
As preferred version of the present utility model: described resistance R3 and electric R5 is MF51E type thermistor.
Compared with prior art, the beneficial effects of the utility model are: the utility model temperature regulation circuit circuit structure is simple, components and parts are few, utilize high precision thermosensitive resistor MF51E as detector unit, improve control accuracy, and prevent repeatedly working of Near The Critical Point by the delay function of 555 time base circuits, circuit is also provided with Powercut self locking power function simultaneously, circuit of sending a telegram here again after preventing power failure opens the waste of energy caused.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of high-precision temperature regulating circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of high-precision temperature regulating circuit, comprises transformer W, rectifier bridge T, relay J, button K and chip IC 1, one end of described relay J connects heating tube A, button K, the contact J-1 of relay J and the winding N1 of transformer W, the other end of button K connects the other end of the contact J-1 of 220V alternating current and relay J, the other end of heating tube A connects a central electrode of bidirectional thyristor Q1, and another central electrode of bidirectional thyristor Q1 connects the other end of relay J, the other end of the winding N1 of transformer W and the other end of 220V alternating current, the control pole contact resistance R1 of bidirectional thyristor Q1, the other end of resistance R1 connects the anode of diode D1 and the pin 3 of chip IC 1, the other end contact resistance R4 of the negative electrode contact resistance R2 of diode D1, resistance R2, resistance R6, resistance R7, electric capacity C1, electric capacity C2, the anode of diode D2, the port 2 of rectifier bridge T and the pin 1 of chip IC 1, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 4 of rectifier bridge T connects the other end and the resistance R8 of electric capacity C2, the pin 2 contact resistance R3 of chip IC 1 and the other end of resistance R4, the other end contact resistance R5 of resistance R3, the other end of resistance R8, the negative electrode of diode D2, the anode of diode D3, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of other end contact resistance R6 of resistance R5 and the pin 6 of chip IC 1, the other end of resistance R7 connects the negative electrode of diode D3.
Chip IC 1 is NE555 type time base circuit.Relay J is normally opened contact relay.Resistance R3 and electric R5 is MF51E type thermistor.
Principle of work of the present utility model is: during use, push button K, relay J must conduct, its normally opened contact J-1 adhesive, even if now unclamp button K circuit also can normally work, 220V alternating current exports the DC voltage of V=6V after transformer W step-down, rectifier bridge T rectification and electric capacity C2 voltage stabilizing.Thermistor R3 is used for the lower limit of control temperature, and R5 is used for upper control limit value.After energising, because 2 pin of chip IC 1 and 6 pin are earth potential, chip IC 1 set, output terminal 3 pin is high level, and bidirectional triode thyristor Q1 triggering and conducting, electrothermal tube A obtains electrical heating.When temperature rises to lower-limit temperature value, R3 resistance reduces, the branch road conducting of R3 place, but due to 6 pin of 555 be still electronegative potential, therefore circuit self-insurance.Temperature continues to rise, and during to higher limit, the branch road conducting of R5 place, now 6 pin voltages of chip IC 1 are higher than 2/3V, and make 555 resets, 3 pin transmit low level, and bidirectional triode thyristor Q1 ends, electrothermal tube power-off.After temperature declines, R5 disconnects, but the still self-insurance of 555 circuit, 3 pin are low level.But when temperature continues to drop to lower limit, R3 disconnects, and 2 pin are earth potential, and make 555 set again, 3 pin transfer high level to, SCR conducting, continues heating, keeps constant temperature.In use procedure during unexpected power-off, relay J power-off, its contact J-1 disconnects, also can not open circuit even if therefore again send a telegram here, and after preventing from having a power failure, incoming call and the user circuit caused of staying out works long hours again, reduces waste of energy.
Claims (4)
1. a high-precision temperature regulating circuit, comprises transformer W, rectifier bridge T, relay J, button K and chip IC 1, is characterized in that, one end of described relay J connects heating tube A, button K, the contact J-1 of relay J and the winding N1 of transformer W, the other end of button K connects the other end of the contact J-1 of 220V alternating current and relay J, the other end of heating tube A connects a central electrode of bidirectional thyristor Q1, and another central electrode of bidirectional thyristor Q1 connects the other end of relay J, the other end of the winding N1 of transformer W and the other end of 220V alternating current, the control pole contact resistance R1 of bidirectional thyristor Q1, the other end of resistance R1 connects the anode of diode D1 and the pin 3 of chip IC 1, the other end contact resistance R4 of the negative electrode contact resistance R2 of diode D1, resistance R2, resistance R6, resistance R7, electric capacity C1, electric capacity C2, the anode of diode D2, the port 2 of rectifier bridge T and the pin 1 of chip IC 1, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 4 of rectifier bridge T connects the other end and the resistance R8 of electric capacity C2, the pin 2 contact resistance R3 of chip IC 1 and the other end of resistance R4, the other end contact resistance R5 of resistance R3, the other end of resistance R8, the negative electrode of diode D2, the anode of diode D3, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the other end of other end contact resistance R6 of resistance R5 and the pin 6 of chip IC 1, the other end of resistance R7 connects the negative electrode of diode D3.
2. a kind of high-precision temperature regulating circuit according to claim 1, is characterized in that, described chip IC 1 is NE555 type time base circuit.
3. according to a kind of high-precision temperature regulating circuit according to claim 1, it is characterized in that, described relay J is normally opened contact relay.
4. according to a kind of high-precision temperature regulating circuit according to claim 1, it is characterized in that, described resistance R3 and electric R5 is MF51E type thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311677.7U CN204595641U (en) | 2015-05-15 | 2015-05-15 | A kind of high-precision temperature regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311677.7U CN204595641U (en) | 2015-05-15 | 2015-05-15 | A kind of high-precision temperature regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204595641U true CN204595641U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520311677.7U Expired - Fee Related CN204595641U (en) | 2015-05-15 | 2015-05-15 | A kind of high-precision temperature regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204595641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325330A (en) * | 2016-10-20 | 2017-01-11 | 广西大学 | Thermostatic control circuit for bird egg incubator |
-
2015
- 2015-05-15 CN CN201520311677.7U patent/CN204595641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325330A (en) * | 2016-10-20 | 2017-01-11 | 广西大学 | Thermostatic control circuit for bird egg incubator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160714 Address after: Jiading District Waigang town 201814 Department of Shanghai City, No. 1500 building three layer 2 Renlu area B Patentee after: SHANGHAI SHENGSU ELECTRONIC TECHNOLOGY CO., LTD. Address before: The five bridge in the town of Fuyang District of Hangzhou city 311404 new village in Zhejiang Province Patentee before: Fuyang Huai Bang Machinery Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20200515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |