CN204068714U - A kind of high-pressure generating circuit - Google Patents
A kind of high-pressure generating circuit Download PDFInfo
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- CN204068714U CN204068714U CN201420605979.0U CN201420605979U CN204068714U CN 204068714 U CN204068714 U CN 204068714U CN 201420605979 U CN201420605979 U CN 201420605979U CN 204068714 U CN204068714 U CN 204068714U
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000803 paradoxical effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a kind of high-pressure generating circuit, comprising: DC power supply, the self-maintained circuit be connected with described DC power supply, the output circuit be connected with described self-maintained circuit, error increasing circuitry and the feedback circuit be connected with the output of described output circuit; Wherein said self-maintained circuit comprises the primary coil of transistor and high-tension transformer, and described output circuit comprises the secondary coil of rectification circuit and described high-tension transformer; Described error increasing circuitry is used for the voltage that fed back by described feedback circuit and reference voltage compares rear output to control the base voltage of the transistor of described self-maintained circuit.The utility model, by the feedback circuit of step-up error increasing circuitry, controls the base voltage of the transistor of self-maintained circuit, improves the stability of output voltage.
Description
Technical field
The utility model belongs to technical field of direct current power, particularly relates to a kind of high-pressure generating circuit with feedback circuit.
Background technology
High-pressure generating circuit in the past as shown in Figure 1, comprise and the DC power supply of direct voltage Ve, the self-maintained circuit 11 be connected with DC power supply, the output circuit be connected with self-maintained circuit 11 and error increasing circuitry 13 are provided, for making output voltage stabilization, this high-pressure generating circuit is also provided with the first rectification circuit 14 be connected with error increasing circuitry 13; Wherein the first rectification circuit 14 is made up of the first primary coil n4, the rectifier diode Di5 of high-tension transformer T1 and electric capacity C3; Self-maintained circuit 11 comprises second primary coil n1 and n2 of transistor Tr1 and high-tension transformer T1, and output circuit comprises the secondary coil n3 of the second rectification circuit 12 and high-tension transformer T1; Error increasing circuitry 13 is for comparing rear output to control the base voltage of the transistor Tr1 of self-maintained circuit 11 by the voltage after described first rectification circuit 14 rectification and reference voltage V ref.
Based on foregoing circuit, the output voltage of secondary side for load change and temperature extremely unstable, be difficult to obtain stable output voltage.Particularly, when the load exported is uncharge situation, output voltage easily uprises, and can cause the insulation of paradoxical discharge or destruction transformer.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of high-pressure generating circuit, can improve the stability of output voltage.
For achieving the above object, the utility model embodiment provides a kind of high-pressure generating circuit, comprising:
DC power supply, the self-maintained circuit be connected with described DC power supply, the output circuit be connected with described self-maintained circuit, error increasing circuitry and the feedback circuit be connected with the output of described output circuit;
Wherein said self-maintained circuit comprises the primary coil of transistor and high-tension transformer, and described output circuit comprises the secondary coil of rectification circuit and described high-tension transformer;
Described error increasing circuitry is used for the voltage that fed back by described feedback circuit and reference voltage compares rear output to control the base voltage of the transistor of described self-maintained circuit.
Preferably, described feedback circuit is series voltage negtive backword circuit.
Preferably, described series voltage negtive backword circuit comprises resistance Rf1 and the resistance Rf2 of series connection mutually, and described error increasing circuitry is error amplifier, and the inverting input of described error amplifier is connected to the centre of described resistance Rf1 and Rf2.
Preferably, described self-maintained circuit comprises the resistance Rb1 that one end is connected to the output of described error increasing circuitry, the resistance Rb2 connected with described resistance Rb1 in one end is connected, the described transistor that base stage is connected with the other end of described resistance Rb2, one end ground connection and the other end connect the resistance Re1 of the emitter of described transistor, one end is connected to described DC power supply and the other end is connected to the coil n1 of the collector electrode of described transistor, be connected to the diode Di2 between described emitter and described collector electrode, one end is connected between described resistance Rb1 and resistance Rb2 and the other end is connected to the diode Di1 of one end of coil n2, the other end ground connection of described coil n2,
Described coil n1 and coil n2 forms the primary coil of described transformer.
Preferably, the described output circuit two voltage doubling rectifying circuit that comprises secondary coil n3 and be connected with described coil.
Preferably, described transistor is pmos type transistor or nmos type transistor.
Preferably, described primary coil is positioned at the both sides of described secondary coil, and is arranged in parallel between described primary coil and/or is arranged in series.
The beneficial effects of the utility model:
The utility model, by above-mentioned feedback circuit, controls the base voltage of the transistor of self-maintained circuit, improves the stability of output voltage.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is high-pressure generating circuit structure chart of the prior art;
The high-pressure generating circuit structure chart that Fig. 2 provides for the utility model;
Fig. 3 is coils of high-voltage transformers structure chart of the prior art;
Fig. 4 is the coils of high-voltage transformers structure chart in the utility model;
Fig. 5 is the another kind of coil structure of high-tension transformer in the utility model.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is 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.
As shown in Figure 2, be the high-pressure generating circuit installation drawing that the utility model embodiment one provides, it comprises:
For providing the DC power supply of direct voltage Ve, the self-maintained circuit 21 be connected with DC power supply, the output circuit be connected with self-maintained circuit 21, error increasing circuitry 23 and the feedback circuit 24 be connected with the output of output circuit.
Wherein self-maintained circuit 21 comprises the primary coil of transistor Tr1 and high-tension transformer T1, and output circuit comprises the secondary coil n3 of rectification circuit 22 and high-tension transformer T1.
Error increasing circuitry 23 is an error amplifier Op1, compares rear amplification for the voltage that fed back by feedback circuit 24 and reference voltage V ref, to export the base voltage that control signal controls the transistor Tr1 of self-maintained circuit 21.
In embodiment two of the present utility model, above-mentioned feedback circuit 24 is series voltage negtive backword circuit, and concrete two resistance Rf1 and Rf2 comprising series connection mutually, the inverting input of error amplifier Op1 is connected to the centre of resistance Rf1 and Rf2.Therefore, the mid-point voltage of resistance Rf1 with Rf2 compared with reference voltage V ref, amplifies its difference, exports control signal by error amplifier.That is, the base voltage of mid-point voltage to the transistor Tr1 of self-maintained circuit 21 of error amplifier feedback resistance Rf1 and Rf2 controls.
In embodiment three of the present utility model, self-maintained circuit 21 comprises the resistance Rb1 that one end is connected to the output of error increasing circuitry 23, the resistance Rb2 connected with resistance Rb1 in one end, the transistor Tr1 that base stage is connected with the other end of resistance Rb2, one end ground connection and the other end connect the resistance Re1 of the emitter of transistor Tr1, one end is connected to DC power supply and the other end is connected to the coil n1 of the collector electrode of transistor Tr1, be connected to the diode Di2 between emitter and collector electrode, one end is connected between resistance Rb1 and resistance Rb2 and the other end is connected to the diode Di1 of one end of coil n2, the other end ground connection of coil n2, its coil n1 and coil n2 forms the primary coil of high-tension transformer T1.
In embodiment four of the present utility model, the secondary coil n3 that output circuit comprises high-tension transformer T1 and the voltage doubling rectifing circuit be connected with secondary coil n3, concrete can be two voltage doubling rectifying circuit.
It should be noted that, above-mentioned transistor also can be pmos type transistor or nmos type transistor.The utility model does not do concrete restriction to this.
The present invention, by arranging feedback circuit to control transistor between the output and error increasing circuitry of high-pressure generating circuit, improves the stability of output voltage.
For embodiment two, the mid-point voltage of resistance Rf1 with Rf2 is consistent with reference voltage V ref mono-through adjustment, and the electric current of resistance Rf1 and Rf2 is equal.So output voltage Eout=Vref* (1+Rf1/Rf2).Visible last output voltage is relevant with the ratio of resistance Rf1 and Rf2.
High-tension transformer is related in the utility model, as shown in Figure 3, around finger primary coil and secondary coil on skeleton 31, the gap wherein between primary coil 32 and secondary coil 33 is larger for the method for winding of existing high-tension transformer, in conjunction with bad, leakage inductance is also larger.For this reason, the utility model embodiment five provides a kind of high-tension transformer, as shown in Figure 4, around finger primary coil and secondary coil on skeleton 41, the turn ratio of its primary coil 42 and secondary coil 43 increases, in the high-tension transformer of secondary coil plural number segmentation coiling, the primary coil 42 of this transformer is distributed in the both sides of secondary coil 43, and coiling in parallel between primary coil 42, while the combination of primary coil 42 and secondary coil 43 is improved, leakage inductance also diminishes.
The utility model embodiment six provides a kind of high-tension transformer, as shown in Figure 5, around finger primary coil and secondary coil on skeleton 51, the turn ratio of its primary coil 52 and secondary coil 53 increases, in the high-tension transformer of secondary coil 53 plural number segmentation coiling, the primary coil 52 of this transformer is distributed in the both sides of secondary coil 53, and coiling of connecting between primary coil 52, while the combination of primary coil 52 and secondary coil 53 is improved, leakage inductance also diminishes.
Certainly, it may occur to persons skilled in the art that, based on above-mentioned transformer, the primary coil that can also arrange transformer is distributed in the both sides of secondary coil, and sections in series coiling between primary coil, part in parallel coiling, while the combination of primary coil and secondary coil can be made equally to improve, leakage inductance also diminishes.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a high-pressure generating circuit, is characterized in that, described circuit comprises:
DC power supply, the self-maintained circuit be connected with described DC power supply, the output circuit be connected with described self-maintained circuit, error increasing circuitry and the feedback circuit be connected with the output of described output circuit;
Wherein said self-maintained circuit comprises the primary coil of transistor and high-tension transformer, and described output circuit comprises the secondary coil of rectification circuit and described high-tension transformer;
Described error increasing circuitry is used for the voltage that fed back by described feedback circuit and reference voltage compares rear output to control the base voltage of the transistor of described self-maintained circuit.
2. high-pressure generating circuit as claimed in claim 1, it is characterized in that, described feedback circuit is series voltage negtive backword circuit.
3. high-pressure generating circuit as claimed in claim 2, it is characterized in that, described series voltage negtive backword circuit comprises resistance Rf1 and the resistance Rf2 of series connection mutually, described error increasing circuitry is error amplifier, and the inverting input of described error amplifier is connected to the centre of described resistance Rf1 and Rf2.
4. high-pressure generating circuit as claimed any one in claims 1 to 3, it is characterized in that, described self-maintained circuit comprises the resistance Rb1 that one end is connected to the output of described error increasing circuitry, the resistance Rb2 connected with described resistance Rb1 in one end is connected, the described transistor that base stage is connected with the other end of described resistance Rb2, one end ground connection and the other end connect the resistance Re1 of the emitter of described transistor, one end is connected to described DC power supply and the other end is connected to the coil n1 of the collector electrode of described transistor, be connected to the diode Di2 between described emitter and described collector electrode, one end is connected between described resistance Rb1 and resistance Rb2 and the other end is connected to the diode Di1 of one end of coil n2, the other end ground connection of described coil n2,
Described coil n1 and coil n2 forms the primary coil of described transformer.
5. high-pressure generating circuit as claimed in claim 4, is characterized in that, the two voltage doubling rectifying circuit that described output circuit comprises secondary coil n3 and is connected with described coil.
6. high-pressure generating circuit as claimed in claim 1, it is characterized in that, described transistor is pmos type transistor or nmos type transistor.
7. high-pressure generating circuit as claimed in claim 1, it is characterized in that, described primary coil is positioned at the both sides of described secondary coil, and is arranged in parallel between described primary coil and/or is arranged in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605979.0U CN204068714U (en) | 2014-10-20 | 2014-10-20 | A kind of high-pressure generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605979.0U CN204068714U (en) | 2014-10-20 | 2014-10-20 | A kind of high-pressure generating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068714U true CN204068714U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605979.0U Expired - Lifetime CN204068714U (en) | 2014-10-20 | 2014-10-20 | A kind of high-pressure generating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068714U (en) |
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2014
- 2014-10-20 CN CN201420605979.0U patent/CN204068714U/en not_active Expired - Lifetime
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