CN101271340A - Simple temperature regulation circuit and hair straightener - Google Patents
Simple temperature regulation circuit and hair straightener Download PDFInfo
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- CN101271340A CN101271340A CNA2008100670120A CN200810067012A CN101271340A CN 101271340 A CN101271340 A CN 101271340A CN A2008100670120 A CNA2008100670120 A CN A2008100670120A CN 200810067012 A CN200810067012 A CN 200810067012A CN 101271340 A CN101271340 A CN 101271340A
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Abstract
The invention discloses a simple temperature regulating circuit which comprises an unidirectional controllable silicon arranged at the connecting line between a load and the cathode of a power supply, an unidirectional diode arranged within the load temperature range and an audio which is arranged between the unidirectional diode and the unidirectional controllable silicon, wherein, the anode of the unidirectional controllable silicon is connected with the load; the cathode of the unidirectional controllable silicon is connected with the cathode of the power supply; a control electrode is connected with the collector of the audio; the emitting electrode of the audio is connected with the cathode of the power supply; a base electrode is connected with the anode of the unidirectional diode; the cathode of the unidirectional diode is connected with the collector of the audio. The invention also discloses a corresponding hair straightener. The circuit has simple circuit, very few elements and apparatuses, low cost and small required structural space and the circuit works stably and can also regulate and set temperature.
Description
Technical field
The present invention relates to temperature control technology, relate in particular to a kind of simple temperature regulation circuit and heater of hair straightener.
Background technology
Temperature regulation circuit is electric equipment products, especially with the heater element is to use very general a kind of circuit in the electrical equipment of load.Because the influence of the various market factors, the development of electric equipment products more and more is tending towards miniaturization and cost degradation, and forms the temperature regulation circuit of a part as its internal circuit, towards the development of structure miniaturization, lowization of the cost trend that also is inevitable.
Temperature regulation circuit of the prior art, the circuit elements device of using is more, and the circuit resource that takies is many, and the volume of product is had certain influence, and especially for the little electric equipment products of some own vols, this problem is especially outstanding.
Summary of the invention
Technical matters to be solved by this invention is: a kind of simple temperature regulation circuit is provided, and the required components and parts of this circuit are considerably less, and are with low cost, working stability, and the desired structure space is little.
The present invention the technical matters that will further solve be: a kind of heater of hair straightener is provided, and this heater of hair straightener can realize adjusting to heating wire/heating board temperature by considerably less components and parts and simple circuit, and is with low cost, working stability, the desired structure space is little.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of simple temperature regulation circuit, this circuit includes an one-way SCR that is arranged on the connection line of load and power cathode, one places the unilateral diode in the load temperature scope, be provided with a triode between described unilateral diode and the described one-way SCR, wherein, the anode of described one-way SCR links to each other with load, negative electrode links to each other with power cathode, the control utmost point is connected the collector of triode, and the emitter of described triode is connected to power cathode, base stage links to each other with unilateral diode is anodal, and the negative pole of described unilateral diode then links to each other with the collector of triode.
Correspondingly, the invention also discloses a kind of heater of hair straightener, include heating wire, current rectifying and wave filtering circuit and temperature regulation circuit, described temperature regulation circuit comprises: one is arranged on the one-way SCR on the connection line of heating wire and power cathode, one places the unilateral diode in the heating wire temperature range, described unilateral diode links to each other with described one-way SCR by a triode, wherein, the anode of described one-way SCR links to each other with heating wire, negative electrode links to each other with power cathode, the control utmost point is connected the collector of triode, and the emitter of described triode is connected to power cathode, base stage links to each other with unilateral diode is anodal, and the negative pole of described unilateral diode then links to each other with the collector of triode.
The invention has the beneficial effects as follows:
The reverse leakage current of embodiments of the invention by unilateral diode in the circuit varies with temperature the principle that changes and comes the inductive load variation of temperature, thereby realize adjusting to load temperature, the required components and parts of its circuit are considerably less, with low cost, the desired structure space is little, working stability can also be regulated design temperature.
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of simple temperature regulation circuit provided by the invention.
Embodiment
With reference to figure 1, this figure is the circuit theory diagrams of an embodiment of simple temperature regulation circuit provided by the invention; Among the figure, present embodiment mainly includes one and is arranged on load HEATER1, HEATER2, one-way SCR Q2 on the connection line of HEATER3 and power cathode, one places the unilateral diode D2 in the load temperature scope, be provided with triode Q1 between unilateral diode D2 and the one-way SCR Q2, wherein, the anode of one-way SCR Q2 links to each other with load, negative electrode links to each other with power cathode, the control utmost point is connected the collector of triode Q1, and the emitter of triode Q1 is connected to power cathode, base stage links to each other with unilateral diode D2 is anodal, and the negative pole of unilateral diode D2 then links to each other with the collector of triode Q1.
In addition, this circuit also includes an adjustable resistance VR who is used to regulate design temperature, and the end of this adjustable resistance VR is connected the base stage of triode Q1, and the other end links to each other with power cathode.
Its circuit working principle is as follows:
After alternating current process D3 rectification, R1, the C1 filtering, provide a DC voltage to circuit.When circuit just begins to power on, temperature-sensitive unilateral diode D2 temperature is lower, leakage current is very little, triode Q1 ends, its current collection is high level very, one-way SCR Q2 conducting, to the load heating, the load temperature after heating raises gradually, unilateral diode D2 leakage current is progressively increased, after load is heated to design temperature, triode Q1 conducting, its collector becomes low level, make one-way SCR Q2 by, thereby stop to make load temperature reduce gradually to the load heating, unilateral diode D2 leakage current progressively reduces, when temperature is reduced to a certain degree, triode Q1 returns to cut-off state, one-way SCR Q2 recovers conducting, so repeatedly, makes temperature constant at design temperature.By changing the resistance of adjustable resistance VR, i.e. scalable design temperature.
Describe an embodiment of heater of hair straightener provided by the invention below in detail.
The heater of hair straightener in the present embodiment and the key distinction of prior art are the designs of its circuit, therefore, the circuit of heater of hair straightener is the emphasis description object of present embodiment, the circuit of described heater of hair straightener mainly is made up of load, rectifying and wave-filtering branch road, temperature regulation circuit, working indicating, and described load can be one or more heater strips or heating plate; Equally with reference to figure 1, among the figure, the branch road that unilateral diode D3, R1, C1 constitute is the rectifying and wave-filtering branch road, one-way SCR Q2, temperature-sensitive unilateral diode D2 and triode Q1 constitute the temperature regulation circuit to load HEATER1, HEATER2, HEATER3, the branch road that pilot lamp LAMP and divider resistance R2 constitute is a working indicating, and the branch road that resistance R 3, adjustable resistance VR, resistance R 4 constitute is that temperature is set branch road.
Wherein, described temperature regulation circuit is the core place of present embodiment, this circuit mainly includes one and is arranged on load HEATER1, HEATER2, one-way SCR Q2 on the connection line of HEATER3 and power cathode, one places the unilateral diode D2 in the heating member heated perimeter, be provided with triode Q1 between unilateral diode D2 and the one-way SCR Q2, wherein, the anode of one-way SCR Q2 links to each other with heating member, negative electrode links to each other with power cathode, the control utmost point is connected the collector of triode Q1, and the emitter of triode Q1 is connected to power cathode, base stage links to each other with unilateral diode D2 is anodal, the negative pole of unilateral diode D2 then links to each other with the collector of triode by pull-up resistor R5, simultaneously, it also is connected the S1 point on the rectifying and wave-filtering branch road, in addition, the base stage of triode Q1 also links to each other with adjustable resistance VR.
Its temperature regulation circuit principle of work is as follows:
After alternating current process D3 rectification, R1, the C1 filtering, provide a DC voltage to circuit.When circuit just begins to power on, temperature-sensitive unilateral diode D2 temperature is lower, leakage current is very little, triode Q1 ends, its current collection is high level very, one-way SCR Q2 conducting, to the load heating, the load temperature after heating raises gradually, unilateral diode D2 leakage current is progressively increased, after load is heated to design temperature, triode Q1 conducting, its collector becomes low level, make one-way SCR Q2 by, thereby stop to make load temperature reduce gradually to the load heating, unilateral diode D2 leakage current progressively reduces, when temperature is reduced to a certain degree, triode Q1 returns to cut-off state, one-way SCR Q2 recovers conducting, so repeatedly, makes temperature constant at design temperature.By changing the resistance of adjustable resistance VR, i.e. scalable design temperature.
In its loaded work piece process, relay indicating light LAMP is bright, the display circuit duty.
Simple temperature regulation circuit provided by the invention utilizes unilateral diode reverse leakage road to vary with temperature and the principle that changes is come the inductive load temperature variation, and when the unilateral diode temperature uprised, the reverse leakage rheology was big, otherwise diminished.Its control circuit is very simple, and the The whole control circuit only needs an one-way SCR, a triode, and three unilateral diodes and a little resistance capacitance get final product.With low cost and working stability can also be regulated design temperature, and it is applied in heater of hair straightener etc. in the less demanding product of temperature control precision the time, and advantage is especially obvious.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (5)
1, a kind of simple temperature regulation circuit, it is characterized in that: this circuit includes an one-way SCR that is arranged on the connection line of load and power cathode, one places the unilateral diode in the load temperature scope, be provided with a triode between described unilateral diode and the described one-way SCR, wherein, the anode of described one-way SCR links to each other with load, negative electrode links to each other with power cathode, the control utmost point is connected the collector of triode, and the emitter of described triode is connected to power cathode, base stage links to each other with unilateral diode is anodal, and the negative pole of described unilateral diode then links to each other with the collector of triode.
2, simple temperature regulation circuit as claimed in claim 1 is characterized in that, this circuit also includes an adjustable resistance that is used to regulate design temperature, and an end of this adjustable resistance links to each other with the base stage of described triode, and the other end links to each other with power cathode.
3, simple temperature regulation circuit as claimed in claim 1 or 2 is characterized in that, described load is heating wire or heating board.
4, a kind of heater of hair straightener includes heating wire, current rectifying and wave filtering circuit and temperature regulation circuit, it is characterized in that, described temperature regulation circuit comprises:
One one-way SCR, that is arranged on the connection line of heating wire and power cathode places the unilateral diode in the heating wire temperature range, described unilateral diode to link to each other with described one-way SCR by a triode, wherein, the anode of described one-way SCR links to each other with heating wire, negative electrode links to each other, controls the collector that the utmost point is connected triode with power cathode, link to each other and the emitter of described triode is connected to power cathode, base stage and unilateral diode is anodal, the negative pole of described unilateral diode then links to each other with the collector of triode.
5, heater of hair straightener as claimed in claim 4 is characterized in that, described temperature regulation circuit also includes an adjustable resistance that is used to regulate design temperature, and an end of this adjustable resistance links to each other with the base stage of described triode, and the other end links to each other with power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100670120A CN101271340A (en) | 2008-04-24 | 2008-04-24 | Simple temperature regulation circuit and hair straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100670120A CN101271340A (en) | 2008-04-24 | 2008-04-24 | Simple temperature regulation circuit and hair straightener |
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| Publication Number | Publication Date |
|---|---|
| CN101271340A true CN101271340A (en) | 2008-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100670120A Pending CN101271340A (en) | 2008-04-24 | 2008-04-24 | Simple temperature regulation circuit and hair straightener |
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| CN (1) | CN101271340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823488A (en) * | 2014-03-16 | 2014-05-28 | 王志 | Temperature adjuster of heat preservation panel of dining table |
| CN110731705A (en) * | 2019-09-18 | 2020-01-31 | 南京机电职业技术学院 | portable safe controllable constant-temperature heating base |
-
2008
- 2008-04-24 CN CNA2008100670120A patent/CN101271340A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823488A (en) * | 2014-03-16 | 2014-05-28 | 王志 | Temperature adjuster of heat preservation panel of dining table |
| CN110731705A (en) * | 2019-09-18 | 2020-01-31 | 南京机电职业技术学院 | portable safe controllable constant-temperature heating base |
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Open date: 20080924 |