CN206135839U - Air purifier's fan drive system of taking out uses linear amplifier circuit - Google Patents
Air purifier's fan drive system of taking out uses linear amplifier circuit Download PDFInfo
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- CN206135839U CN206135839U CN201621077298.7U CN201621077298U CN206135839U CN 206135839 U CN206135839 U CN 206135839U CN 201621077298 U CN201621077298 U CN 201621077298U CN 206135839 U CN206135839 U CN 206135839U
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- colelctor electrode
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Abstract
The utility model discloses an air purifier's fan drive system of taking out uses linear amplifier circuit, mainly by amplifier P, triode VT1, triode VT2, triode VT3, triode VT4, triode VT5, triode VT6 to and anodal be connected with triode VT5's collecting electrode behind resistance R5, negative pole and triode VT3's base is connected the polarity electric capacity C5 constitution of back ground connection. The utility model discloses simple structure, the practicality is strong, and can carry out the two poles of the earth to input voltage and recommend the emitter -base bandgap grading and follow, and the drive current who can be effectual exports the actuating system according to the actual voltage of load and electric current adjusts, thereby has ensured the utility model discloses the improvement actuating system output voltage and the stability of electric current that can be fine make air purifier better to the effect of the cleanness of room air, purification, and messenger air purifier is fine satisfies people's demand.
Description
Technical field
The utility model relates to a kind of amplifying circuit, specifically, is that a kind of air exhauster of air purifier drives
System linear amplifier circuit.
Background technology
Air purifier is mainly made up of systems such as air exhauster, airstrainers, and its operation principle is：In air purifier
Air exhauster make circulating internal air, the air of pollution various pollutant are removed after the airstrainer in machine or
Absorption, air is constantly ionized, and is produced a large amount of anion, is sent by gentle breeze fan, forms anion air-flow, reaches cleaning, purification
The purpose of air.And the air exhauster of air purifier operationally then needs drive system and provides stable driving current for which,
To guarantee the stabilization of speed of air exhauster, even if the effect of circulating internal air more preferably, makes air purifier preferably reach
Cleaning, the purpose of purify air.
However, the air exhauster drive system of existing air purifier there is output voltage and current stability is poor, cause
The speed stability of the air exhauster of high air purifier is poor, so that cleaning of the air purifier to room air, the effect of purification
Fruit is not good, it is impossible to meet the demand of people well.
Therefore it provides a kind of air exhauster drive system output voltage and the electricity of current stability that can improve air purifier
Road is the task of top priority.
Utility model content
The purpose of this utility model is that the air exhauster drive system for overcoming existing air purifier has output voltage
The defect poor with current stability, there is provided a kind of air purifier air exhauster drive system linear amplifier circuit.
This utility model is achieved through the following technical solutions：A kind of air exhauster drive system of air purifier is with linearly
Amplifying circuit, mainly by amplifier P, audion VT1, audion VT2, audion VT3, audion VT4, audion VT5, three poles
Pipe VT6, one end is connected with the positive pole of amplifier P, the other end as the input of linear amplifier circuit resistance R6, positive pole Jing
Be connected with the negative pole of amplifier P after resistance R8, the polar capacitor C3 of minus earth, negative pole is Jing after resistance R2 with amplifier P's
The polar capacitor C1 that anelectrode is connected, positive pole is connected with the colelctor electrode of audion VT1 Jing after resistance R1, positive pole Jing resistance R3
Be connected with the base stage of audion VT1 afterwards, the polar capacitor C2 that negative pole is connected with the outfan of amplifier P, positive pole Jing resistance
Be connected with the outfan of amplifier P after R9, the polar capacitor C4 that negative pole is connected with the base stage of audion VT2, P poles and three poles
The emitter stage of pipe VT1 is connected, the diode D1 that N poles are connected with the emitter stage of audion VT2 Jing after resistance R10, one end and three poles
The resistance R4 that the emitter stage of pipe VT1 is connected, the other end is connected with the base stage of audion VT5, P poles are sent out with audion VT2's
The diode D2 that emitter-base bandgap grading is connected, N poles are connected with the base stage of audion VT6 Jing after resistance R12, one end is with audion VT4's
The resistance R11 that base stage is connected, the other end is connected with the base stage of audion VT3, one end is connected with the emitter stage of audion VT5
Connect, the resistance R7 that the other end is connected with the base stage of audion VT3, and current collection of the positive pole Jing after resistance R5 with audion VT5
The polar capacitor C5 compositions that pole is connected, negative pole is grounded after being connected with the base stage of audion VT3；The negative electricity of the amplifier P
Pole is connected with the colelctor electrode of audion VT2；The colelctor electrode of the audion VT1 is connected with the colelctor electrode of audion VT5；Institute
State the minus earth of polar capacitor C1；The colelctor electrode of the audion VT2 is also connected with the colelctor electrode of audion VT6 and is followed by
Ground；The colelctor electrode of the audion VT3 is connected with the base stage of audion VT5, the emitter stage phase of its emitter stage and audion VT4
Connection；The colelctor electrode of the audion VT4 is connected with the N poles of diode D2, its base stage is connected with the emitter stage of audion VT6
Connect；The colelctor electrode of the audion VT5 is collectively forming the outfan of linear amplifier circuit with the colelctor electrode of audion VT6.
To guarantee practical effect of the present utility model, the amplifier P preferentially employs OP364 amplifiers and comes real
It is existing；Audion VT1～the VT6 employs 3CG21 audions to realize simultaneously；The Zener diode D3 is then preferentially adopted
1N5221B Zener diodes are realizing.
This utility model compared with prior art, with advantages below and beneficial effect：
This utility model simple structure, it is practical, and the two poles of the earth can be carried out to input voltage and recommend emitter following, can be effective
Virtual voltage and electric current according to load the driving current that drive system export is adjusted, ensure that this practicality newly
Type can improve the stability of drive system output voltage and electric current well, make air purifier to the cleaning of room air, net
The effect of change more preferably, makes air purifier meet the demand of people well.
Description of the drawings
Fig. 1 is integrated circuit structural representation of the present utility model.
Specific embodiment
This utility model is described in further detail with reference to embodiment and its accompanying drawing, but reality of the present utility model
Apply mode not limited to this.
As shown in figure 1, this utility model is mainly by amplifier P, audion VT1, audion VT2, audion VT3, three poles
Pipe VT4, audion VT5, audion VT6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electricity
Resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor
C4, polar capacitor C5, diode D1, and diode D2 are constituted.
To guarantee practical effect of the present utility model, the amplifier P preferentially employs OP364 amplifiers and comes real
It is existing；Audion VT1～the VT6 employs 3CG21 audions to realize；Meanwhile, the resistance of resistance R1 is 5k Ω, resistance R2
The resistance of～R4 is 100 Ω, and the resistance of resistance R5, resistance R7 and resistance R8 is 10k Ω, and the resistance of resistance R6 is 20 Ω,
The resistance of resistance R9 is 100k Ω, and the resistance of resistance R10 is 1 Ω for the resistance of 47 Ω, resistance R11 and resistance R1；Polarity electricity
Hold C1, the capacitance of polar capacitor C3 and polar capacitor C5 and be 4 μ F, polar capacitor C2 and polar capacitor C4 is its appearance of charging capacitor
It is worth for 10000 μ F/250V；Diode D1 and diode D2 are 1N5406 diodes.
During connection, one end of resistance R6 is connected with the positive pole of amplifier P, input of the other end as linear amplifier circuit
End is simultaneously connected with the output stage of drive system.The positive pole of polar capacitor C3 is connected with the negative pole of amplifier P Jing after resistance R8,
Minus earth.The negative pole of polar capacitor C1 is connected with the anelectrode of amplifier P Jing after resistance R2, and positive pole is Jing after resistance R1 with three
The colelctor electrode of pole pipe VT1 is connected.The positive pole of polar capacitor C2 is connected with the base stage of audion VT1 Jing after resistance R3, negative pole
It is connected with the outfan of amplifier P.
Wherein, the positive pole of polar capacitor C4 is connected with the outfan of amplifier P Jing after resistance R9, negative pole and audion
The base stage of VT2 is connected.The P poles of diode D1 are connected with the emitter stage of audion VT1, N poles Jing after resistance R10 with audion
The emitter stage of VT2 connects.One end of resistance R4 is connected with the emitter stage of audion VT1, the base stage phase of the other end and audion VT5
Connection.The P poles of diode D2 are connected with the emitter stage of audion VT2, base stage phase of the N poles Jing after resistance R12 with audion VT6
Connection.
Meanwhile, one end of resistance R11 is connected with the base stage of audion VT4, and the other end is connected with the base stage of audion VT3
Connect.One end of resistance R7 is connected with the emitter stage of audion VT5, and the other end is connected with the base stage of audion VT3.Polarity electricity
The positive pole for holding C5 is connected with the colelctor electrode of audion VT5 Jing after resistance R5, and negative pole is connected with the base stage of audion VT3 and is followed by
Ground.
The negative electrode of the amplifier P is connected with the colelctor electrode of audion VT2；The colelctor electrode of the audion VT1 with
The colelctor electrode of audion VT5 is connected；The minus earth of the polar capacitor C1；The colelctor electrode of the audion VT2 is also with three
The colelctor electrode of pole pipe VT6 is grounded after being connected；The colelctor electrode of the audion VT3 is connected with the base stage of audion VT5, its
Emitter-base bandgap grading is connected with the emitter stage of audion VT4；The colelctor electrode of the audion VT4 is connected with the N poles of diode D2, its base
Pole is connected with the emitter stage of audion VT6；The colelctor electrode of audion VT5 is connected with the power input of air exhauster,
And the colelctor electrode of audion VT6 is then connected with the startup pole of air exhauster.
During work, the positive pole input of the amplified device P of driving current of drive system output, and amplifier P is then as this reality
With new pre-amplifier, amplifier P is adjusted to the quiescent point of the pulse current of the driving current being input into, and is made
The intensity stabilization of the pulse current of driving current, the driving current after pulse current conditioning are transferred to polar capacitor C2, polarity electricity
Hold C4, the charging circuit that resistance R3 and resistance R9 are formed, polar capacitor C2 and polar capacitor C4 obtain it is electric after start to charge up, work as polarity
Then start two-stage to be defined to VT1, VT2, VT5 and VT6 when electric current on electric capacity C2 and polar capacitor C4 is sufficiently large recommend emitter-base bandgap grading
Follow circuit discharges, and wherein audion VT5 and audion VT6 is voltage and current IGCT, i.e. polar capacitor C2 and polarity electricity
Hold C4 institutes discharge stream for 300kHz, the two-stage is recommended emitter follower circuit and can be carried out the frequency of the 300kHz driving currents of input
Amplify, while the feedback circuit that audion VT3, polar capacitor C5, resistance R5 resistance R7 and resistance R11 are formed is by the volume of air exhauster
Determine voltage and current and feed back to two-stage to recommend emitter follower circuit, and R7 and resistance R11 is current sampling resistor, two-stage is recommended and penetrated
Pole follow circuit is then adjusted to the electric current for exporting according to the voltage and current of feedback circuit input, makes output voltage and electric current
It is directly proportional to the rated voltage and electric current of air exhauster, ensures that the output voltage and electric current of drive system and the volume of air exhauster
Determine voltage and current consistent, so as to improve the speed stability of the air exhauster of high air purifier, air purifier pair can be made
The cleaning of room air, the effect on driving birds is not good of purification, it is impossible to meet the demand of people well.
Wherein, voltage and current transistor audion VT5 and audion VT6 are protected when audion VT4 is used to export open circuit；
When the emitter current of VT3 or VT4 is 0.6A, VT5 or VT6 conductings force the base potential of VT3 or VT4 to reduce, so as to reach
To the purpose of protection voltage and current transistor VT3 or VT4.This utility model simple structure, it is practical, and can be to input electricity
Pressure carries out the two poles of the earth and recommends emitter following, the driving electricity that effectively can be exported to drive system according to the virtual voltage and electric current of load
Stream is adjusted, and ensures that this utility model can improve the stability of drive system output voltage and electric current well, makes
Air purifier to the cleaning of room air, purification effect more preferably, make air purifier meet the demand of people well.
According to above-described embodiment, you can realize this utility model well.
Claims (3)
1. the air exhauster drive system linear amplifier circuit of a kind of air purifier, it is characterised in that main by amplifier P,
Audion VT1, audion VT2, audion VT3, audion VT4, audion VT5, audion VT6, one end is with amplifier P just
Pole is connected, the other end as the input of linear amplifier circuit resistance R6, negative pole of the positive pole Jing after resistance R8 with amplifier P
Be connected, the polar capacitor C3 of minus earth, negative pole is connected with the anelectrode of amplifier P Jing after resistance R2, positive pole Jing resistance
The polar capacitor C1 being connected with the colelctor electrode of audion VT1 after R1, positive pole are connected with the base stage of audion VT1 Jing after resistance R3
Connect, the polar capacitor C2 that negative pole is connected with the outfan of amplifier P, outfan phase of the positive pole Jing after resistance R9 with amplifier P
The polar capacitor C4 that connection, negative pole are connected with the base stage of audion VT2, P poles are connected with the emitter stage of audion VT1, N poles
Diode D1 Jing after resistance R10 with the emitter stage of audion VT2 even, one end is connected with the emitter stage of audion VT1, another
The resistance R4 that end is connected with the base stage of audion VT5, P poles are connected with the emitter stage of audion VT2, N poles are Jing after resistance R12
The diode D2 being connected with the base stage of audion VT6, one end is connected with the base stage of audion VT4, the other end and audion
The resistance R11 that the base stage of VT3 is connected, one end is connected with the emitter stage of audion VT5, the base of the other end and audion VT3
The resistance R7 that pole is connected, and positive pole be connected with the colelctor electrode of audion VT5 Jing after resistance R5, negative pole and audion VT3
Base stage be connected after be grounded polar capacitor C5 composition；The negative electrode of the amplifier P is connected with the colelctor electrode of audion VT2
Connect；The colelctor electrode of the audion VT1 is connected with the colelctor electrode of audion VT5；The minus earth of the polar capacitor C1；Institute
State audion VT2 colelctor electrode be also connected with the colelctor electrode of audion VT6 after be grounded；The colelctor electrode of the audion VT3 with
The base stage of audion VT5 is connected, its emitter stage is connected with the emitter stage of audion VT4；The colelctor electrode of the audion VT4
It is connected with the N poles of diode D2, its base stage is connected with the emitter stage of audion VT6；The colelctor electrode of the audion VT5 with
The colelctor electrode of audion VT6 is collectively forming the outfan of linear amplifier circuit.
2. the air exhauster drive system linear amplifier circuit of a kind of air purifier according to claim 1, its feature
It is that the amplifier P is OP364 amplifiers.
3. the air exhauster drive system linear amplifier circuit of a kind of air purifier according to claim 2, its feature
It is that the audion VT1～VT6 is 3CG21 audions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621077298.7U CN206135839U (en) | 2016-09-23 | 2016-09-23 | Air purifier's fan drive system of taking out uses linear amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621077298.7U CN206135839U (en) | 2016-09-23 | 2016-09-23 | Air purifier's fan drive system of taking out uses linear amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135839U true CN206135839U (en) | 2017-04-26 |
Family
ID=58569903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621077298.7U Active CN206135839U (en) | 2016-09-23 | 2016-09-23 | Air purifier's fan drive system of taking out uses linear amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301262A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system linear amplifier circuit of air purifier |
-
2016
- 2016-09-23 CN CN201621077298.7U patent/CN206135839U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301262A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system linear amplifier circuit of air purifier |
| CN106301262B (en) * | 2016-09-23 | 2019-07-05 | 上海世谛集成电路设计有限公司 | A kind of exhaust fan drive system linear amplifier circuit of air purifier |
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