CN204496316U - A kind of Intelligent heating circuit based on 555 timers - Google Patents
A kind of Intelligent heating circuit based on 555 timers Download PDFInfo
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- CN204496316U CN204496316U CN201520232675.9U CN201520232675U CN204496316U CN 204496316 U CN204496316 U CN 204496316U CN 201520232675 U CN201520232675 U CN 201520232675U CN 204496316 U CN204496316 U CN 204496316U
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Abstract
The utility model discloses a kind of Intelligent heating circuit based on 555 timers, comprise heater circuit, temperature-control circuit and multi resonant oscillating circuit; Heater circuit comprises photo-coupler M, bidirectional thyristor VT1, diode T3 and heating wire TC, temperature-control circuit comprises chip IC 2, temperature resistance RM, potentiometer RP1, electric capacity C2, diode T1 and diode T2, and multi-resonant oscillating circuit comprises chip IC 1, electric capacity C1, electric capacity C2 and electric capacity C3.The utility model circuit uses two accurate monostalbe trigger CD14538BE as control element, the multivibrator reliable operation that 555 timers are formed, stable performance, the 4N25 photo-coupler used can effectively realize signal one-way transmission, input end and output terminal fully achieve electrical isolation, this circuit is had, and integrated level is high, antijamming capability strong, working stability, contactless, long service life, the advantage that transfer efficiency is high.
Description
Technical field
The utility model relates to a kind of heater circuit, and specifically a kind of structure is simple, the Intelligent heating circuit of stable performance.
Background technology
Heater circuit is widely used in the various heating electrical appliances in daily life, well heater conventional on market is all with heated protective function, namely when heating-up temperature reaches setting value, heater circuit can disconnect automatically, control temperature is carried out with this, but the temperature-controlled process that most of heater circuit adopts uses electromagnetic relay to disconnect main circuit by force to realize temperature control effect, this method can make to produce momentary voltage pulse in circuit, the loss of this relay meeting of long-time use accelerating circuit components and parts, strengthen use cost, and circuit signal can be subject to signal disturbing, cause control circuit stable not.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, and the Intelligent heating circuit of stable performance, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
Based on an Intelligent heating circuit for 555 timers, comprise heater circuit, temperature-control circuit, multi resonant oscillating circuit; Described heater circuit comprises photo-coupler M, bidirectional thyristor VT1, diode T3 and heating wire TC, described temperature-control circuit comprises chip IC 2, temperature resistance RM, potentiometer RP1, electric capacity C2, diode T1 and diode T2, and described multi-resonant oscillating circuit comprises chip IC 1, electric capacity C1, electric capacity C2 and electric capacity C3;
1 pin contact resistance R1 of chip IC 1, resistance R5, resistance R7, electric capacity C3, a stiff end of potentiometer RP1, 3 pin of temperature resistance RM and chip IC 2, the other end of 2 pin contact resistance R1 of chip IC 1 and resistance R2, 3 pin ground connection of chip IC 1, 4 pin of chip IC 1 connect electric capacity C1, the other end of 5 pin contact resistance R2 of chip IC 1, 6 pin of chip IC 1 connect electric capacity C2, 7 pin of chip IC 1 connect electric capacity C4, the other end contact resistance R3 of electric capacity C1, resistance R4, the other end of electric capacity C2, electric capacity C6, electric capacity C8, 4 ports of rectifier bridge T, the emitter of triode RT1 and 8 pin of chip IC 2 ground connection, the other end of resistance R3 connects the other end of electric capacity C3, the other end of electric capacity C4 connects 9 pin of chip IC 2, 10 pin of chip IC 2 and resistance R4, 1 pin of chip IC 2 connects electric capacity C5, 2 pin of chip IC 2 connect the other end of temperature resistance RM and the other end of electric capacity C5, 4 pin of chip IC 2 connect a stiff end of potentiometer RP1, the sliding end of potentiometer RP1, electric capacity C7, 5 pin of chip IC 2 connect the other end of electric capacity C7, 6 pin of chip IC 2 connect the negative pole of diode T2, 7 pin of chip IC 2 connect the negative pole of diode T1, the positive pole of the cathode connecting diode T2 of diode T1, the other end of resistance R5, the other end of resistance R6 and electric capacity C6, the base stage of the other end connecting triode RT1 of resistance R6, the collector contact resistance R8 of triode RT1, the other end of resistance R8 connects 2 pin of photo-coupler M, the other end of the 1 pin contact resistance R7 of photo-coupler M, the other end of electric capacity C8 and 3 ports of rectifier bridge T, 1 port of rectifier bridge T connects the negative pole of diode T3, 2 pin of rectifier bridge T connect a central electrode of bidirectional thyristor VT1 and the Secondary Winding of transformer W, another central electrode contact resistance R9 of bidirectional thyristor VT1, the other end of 2 windings of resistance wire TC and transformer, the control pole of bidirectional thyristor VT1 connects 4 pin of photo-coupler M, the other end of the 2 pin contact resistance R9 of photo-coupler M, the other end of resistance wire TC connects the positive pole of diode T3, a winding switching 220V power supply of transformer W.
As further scheme of the present utility model: described chip IC 2 is the two accurate monostalbe trigger of CD14538BE type.
As further scheme of the present utility model: the model of described photo-coupler M is 4N25, and resistance wire TC model is GH140.
As further scheme more of the present utility model: the alternating current step-down of 220V is 12V by the turn ratio of the once secondary terminals of end and transformer W of described transformer W.
Compared with prior art, the beneficial effects of the utility model are: circuit uses two accurate monostalbe trigger CD14538BE as control element, the multivibrator reliable operation that 555 timers are formed, stable performance, the 4N25 photo-coupler used can effectively realize signal one-way transmission, and input end and output terminal fully achieve electrical isolation, and this circuit is had, and integrated level is high, antijamming capability is strong, working stability, contactless, long service life, the advantage that transfer efficiency is high.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the Intelligent heating circuit based on 555 timers.
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, in the utility model embodiment, a kind of Intelligent heating circuit based on 555 timers, comprises heater circuit, temperature-control circuit, multi resonant oscillating circuit; Heater circuit comprises photo-coupler M, bidirectional thyristor VT1, diode T3 and heating wire TC, temperature-control circuit comprises chip IC 2, temperature resistance RM, potentiometer RP1, electric capacity C2, diode T1 and diode T2, and multi-resonant oscillating circuit comprises chip IC 1, electric capacity C1, electric capacity C2 and electric capacity C3;
1 pin contact resistance R1 of chip IC 1, resistance R5, resistance R7, electric capacity C3, a stiff end of potentiometer RP1, 3 pin of temperature resistance RM and chip IC 2, the other end of 2 pin contact resistance R1 of chip IC 1 and resistance R2, 3 pin ground connection of chip IC 1, 4 pin of chip IC 1 connect electric capacity C1, the other end of 5 pin contact resistance R2 of chip IC 1, 6 pin of chip IC 1 connect electric capacity C2, 7 pin of chip IC 1 connect electric capacity C4, the other end contact resistance R3 of electric capacity C1, resistance R4, the other end of electric capacity C2, electric capacity C6, electric capacity C8, 4 ports of rectifier bridge T, the emitter of triode RT1 and 8 pin of chip IC 2 ground connection, the other end of resistance R3 connects the other end of electric capacity C3, the other end of electric capacity C4 connects 9 pin of chip IC 2, 10 pin of chip IC 2 and resistance R4, 1 pin of chip IC 2 connects electric capacity C5, 2 pin of chip IC 2 connect the other end of temperature resistance RM and the other end of electric capacity C5, 4 pin of chip IC 2 connect a stiff end of potentiometer RP1, the sliding end of potentiometer RP1, electric capacity C7, 5 pin of chip IC 2 connect the other end of electric capacity C7, 6 pin of chip IC 2 connect the negative pole of diode T2, 7 pin of chip IC 2 connect the negative pole of diode T1, the positive pole of the cathode connecting diode T2 of diode T1, the other end of resistance R5, the other end of resistance R6 and electric capacity C6, the base stage of the other end connecting triode RT1 of resistance R6, the collector contact resistance R8 of triode RT1, the other end of resistance R8 connects 2 pin of photo-coupler M, the other end of the 1 pin contact resistance R7 of photo-coupler M, the other end of electric capacity C8 and 3 ports of rectifier bridge T, 1 port of rectifier bridge T connects the negative pole of diode T3, 2 pin of rectifier bridge T connect a central electrode of bidirectional thyristor VT1 and the Secondary Winding of transformer W, another central electrode contact resistance R9 of bidirectional thyristor VT1, the other end of 2 windings of resistance wire TC and transformer, the control pole of bidirectional thyristor VT1 connects 4 pin of photo-coupler M, the other end of the 2 pin contact resistance R9 of photo-coupler M, the other end of resistance wire TC connects the positive pole of diode T3, a winding switching 220V power supply of transformer W.
Chip IC 2 is the two accurate monostalbe trigger of CD14538BE type, and the model of photo-coupler M is 4N25, and resistance wire TC model is GH140, and the alternating current step-down of 220V is 12V by the turn ratio of the once secondary terminals of end and transformer W of described transformer W.
Principle of work of the present utility model is: 220V line voltage is transformed into 12V direct current by W and the rectifier bridge T of transformer, in normal heating situation, stable multi-oscillation circuit processes current signal, and export square-wave pulse signal from 7 pins of 555 timers, after the differentiating circuit process of this pulse signal by electric capacity C4 and resistance R4 composition, from 9 pin and the input of 10 pin of CD4538, trigger two monostable circuits of its inside, horizontal pulse width of going forward side by side compares, when 6 pin of CD4538 and 7 pin export high level simultaneously, diode T1 and diode T2 ends, triode RT1 conducting, the light emitting diode of photo-coupler M inside is lighted, the photistor conducting of photo-coupler M inside, bidirectional thyristor VT1 is triggered and conducting, resistance wire TC energising starts heating.Along with the rising of temperature, the resistance of temperature resistance RM starts to decline, when heating-up temperature reaches the design temperature of temperature resistance RM, 7 pin of CD4538 are transformed to low level by high level, diode T1 conducting, triode RT1 and photo-coupler M, bidirectional thyristor VT1 all end, and resistance wire TC stops heating.
Claims (4)
1., based on an Intelligent heating circuit for 555 timers, comprise heater circuit, temperature-control circuit and multi resonant oscillating circuit; It is characterized in that, described heater circuit comprises photo-coupler M, bidirectional thyristor VT1, diode T3 and heating wire TC, described temperature-control circuit comprises chip IC 2, temperature resistance RM, potentiometer RP1, electric capacity C2, diode T1 and diode T2, and described multi-resonant oscillating circuit comprises chip IC 1, electric capacity C1, electric capacity C2 and electric capacity C3;
1 pin contact resistance R1 of chip IC 1, resistance R5, resistance R7, electric capacity C3, a stiff end of potentiometer RP1, 3 pin of temperature resistance RM and chip IC 2, the other end of 2 pin contact resistance R1 of chip IC 1 and resistance R2, 3 pin ground connection of chip IC 1, 4 pin of chip IC 1 connect electric capacity C1, the other end of 5 pin contact resistance R2 of chip IC 1, 6 pin of chip IC 1 connect electric capacity C2, 7 pin of chip IC 1 connect electric capacity C4, the other end contact resistance R3 of electric capacity C1, resistance R4, the other end of electric capacity C2, electric capacity C6, electric capacity C8, 4 ports of rectifier bridge T, the emitter of triode RT1 and 8 pin of chip IC 2 ground connection, the other end of resistance R3 connects the other end of electric capacity C3, the other end of electric capacity C4 connects 9 pin of chip IC 2, 10 pin of chip IC 2 and resistance R4, 1 pin of chip IC 2 connects electric capacity C5, 2 pin of chip IC 2 connect the other end of temperature resistance RM and the other end of electric capacity C5, 4 pin of chip IC 2 connect a stiff end of potentiometer RP1, the sliding end of potentiometer RP1, electric capacity C7, 5 pin of chip IC 2 connect the other end of electric capacity C7, 6 pin of chip IC 2 connect the negative pole of diode T2, 7 pin of chip IC 2 connect the negative pole of diode T1, the positive pole of the cathode connecting diode T2 of diode T1, the other end of resistance R5, the other end of resistance R6 and electric capacity C6, the base stage of the other end connecting triode RT1 of resistance R6, the collector contact resistance R8 of triode RT1, the other end of resistance R8 connects 2 pin of photo-coupler M, the other end of the 1 pin contact resistance R7 of photo-coupler M, the other end of electric capacity C8 and 3 ports of rectifier bridge T, 1 port of rectifier bridge T connects the negative pole of diode T3, 2 pin of rectifier bridge T connect a central electrode of bidirectional thyristor VT1 and the Secondary Winding of transformer W, another central electrode contact resistance R9 of bidirectional thyristor VT1, the other end of 2 windings of resistance wire TC and transformer, the control pole of bidirectional thyristor VT1 connects 4 pin of photo-coupler M, the other end of the 2 pin contact resistance R9 of photo-coupler M, the other end of resistance wire TC connects the positive pole of diode T3, a winding switching 220V power supply of transformer W.
2. a kind of Intelligent heating circuit based on 555 timers according to claim 1, is characterized in that, described chip IC 2 is the two accurate monostalbe trigger of CD14538BE type.
3. a kind of Intelligent heating circuit based on 555 timers according to claim 1, is characterized in that, the model of described photo-coupler M is 4N25, and resistance wire TC model is GH140.
4. a kind of Intelligent heating circuit based on 555 timers according to claim 1, is characterized in that, the alternating current step-down of 220V is 12V by the turn ratio of the once secondary terminals of end and transformer W of described transformer W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232675.9U CN204496316U (en) | 2015-04-12 | 2015-04-12 | A kind of Intelligent heating circuit based on 555 timers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232675.9U CN204496316U (en) | 2015-04-12 | 2015-04-12 | A kind of Intelligent heating circuit based on 555 timers |
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| CN204496316U true CN204496316U (en) | 2015-07-22 |
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| CN201520232675.9U Expired - Fee Related CN204496316U (en) | 2015-04-12 | 2015-04-12 | A kind of Intelligent heating circuit based on 555 timers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571746A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Temperature acquisition circuit |
| CN106325330A (en) * | 2016-10-20 | 2017-01-11 | 广西大学 | Thermostatic control circuit for bird egg incubator |
| CN106325339A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | Modern agricultural intelligent cultivation electronic device |
| CN107291122A (en) * | 2017-07-31 | 2017-10-24 | 南京理工大学 | Frigid zone target range Intersection Measuring System temperature control modules |
-
2015
- 2015-04-12 CN CN201520232675.9U patent/CN204496316U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571746A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Temperature acquisition circuit |
| CN105571746B (en) * | 2016-01-27 | 2018-05-29 | 国网山西省电力公司运城供电公司 | Temperature collection circuit |
| CN106325330A (en) * | 2016-10-20 | 2017-01-11 | 广西大学 | Thermostatic control circuit for bird egg incubator |
| CN106325339A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | Modern agricultural intelligent cultivation electronic device |
| CN107291122A (en) * | 2017-07-31 | 2017-10-24 | 南京理工大学 | Frigid zone target range Intersection Measuring System temperature control modules |
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| Date | Code | Title | Description |
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| 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: 20150722 Termination date: 20160412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |