CN205693577U - A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current - Google Patents
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current Download PDFInfo
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- CN205693577U CN205693577U CN201620578595.3U CN201620578595U CN205693577U CN 205693577 U CN205693577 U CN 205693577U CN 201620578595 U CN201620578595 U CN 201620578595U CN 205693577 U CN205693577 U CN 205693577U
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Abstract
The utility model discloses a kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current, it is characterized in that, main by control chip U3, transformator T, diode rectifier U1, polar capacitor C1, audion VT1, diode D2, polar capacitor C4, it is serially connected in the integrated stable voltage circuit between the emitter stage of diode rectifier U1 and audion VT1, the reference voltage output circuit being connected with colelctor electrode and the control chip U3 of audion VT1 respectively, and the drift current being serially connected between OUT pin and the reference voltage output circuit of control chip U3 adjusts circuit composition.This utility model can reduce the power consumption of supply voltage and electric current, and can effectively eliminate the ripple in electric current, ensures that this utility model can export stable voltage and current, is effectively prevented triangle wave voltage and non-linear distortion occur.
Description
Technical field
This utility model relates to electronic applications, specifically, is a kind of integrated voltage-stabilized adjusting circuit based on drift current
Formula constant current source.
Background technology
Along with the development of science and technology, the electronic product such as TV, computer occurs in the middle of the life of people the most in a large number, TV
The display device such as screen, computer monitor all can use triangular voltage sweep circuit.But, the most general triangular wave system
It is all to use analog circuit, by a constant current source, electric capacity is charged and produces Linear Triangular wave voltage.But, existing
There is output voltage and the problem of electric current instability in constant current source, causes the electric wave of triangle wave voltage to initiate and terminal all can produce
Non-linear distortion in various degree.
Therefore it provides a kind of power supply that can export constant voltage and electric current is the task of top priority.
Utility model content
The purpose of this utility model is to overcome constant current source of the prior art to there is output voltage and electric current is unstable
Defect, it is provided that a kind of based on drift current adjust circuit integrated voltage-stabilized formula constant current source.
This utility model is achieved through the following technical solutions: a kind of integrated voltage-stabilized formula adjusting circuit based on drift current
Constant current source, mainly by control chip U3, transformator T, diode rectifier U1, positive pole is defeated with the positive pole of diode rectifier U1
Go out the polar capacitor C1 that end is connected, negative pole is connected, audion VT1, P pole warp with the cathode output end of diode rectifier U1
The diode D2 that after resistance R5, the VCC pin with control chip U3 is connected, N pole is connected with the TRI pin of control chip U3,
The polar capacitor C4 that positive pole is connected with the base stage of audion VT1, negative pole is connected with the RES pin of control chip U3, concatenation
Integrated stable voltage circuit between the emitter stage of diode rectifier U1 and audion VT1, respectively with the colelctor electrode of audion VT1
The reference voltage output circuit being connected with control chip U3, and it is serially connected in OUT pin and the reference voltage of control chip U3
Drift current between output circuit adjusts circuit composition；The Same Name of Ends of the secondary inductance coil of described transformator T and diode
One of them input of commutator U1 is connected, its non-same polarity is connected with another input of diode rectifier U1
Connect；The GND pin ground connection of described control chip U3；The base stage of described audion VT1 is connected with the VCC pin of control chip U3
Connect；Described integrated stable voltage circuit is connected with reference voltage output circuit.
Described drift current adjusts electricity routing amplifier P, audion VT4, audion VT5, P pole and the base of audion VT4
The diode D6 that pole is connected, N pole is sequentially connected through resistance R15 emitter stage with audion VT4 after adjustable resistance R16,
The polarity of ground connection after positive pole base stage with audion VT4 after resistance R17 is connected, negative pole is connected with the negative pole of amplifier P
Electric capacity C7, the polarity that positive pole is connected with the outfan of amplifier P, negative pole negative pole with amplifier P after resistance R18 is connected
Electric capacity C8, one end is connected with the negative electrode of amplifier P, the mode of resistance R20, the N pole of other end ground connection and audion VT5 is entered
Diode D7, the P pole that row connects, P pole positive pole with amplifier P after resistance R19 is connected after resistance R22 with audion
The Zener diode D8 that the emitter stage of VT5 is connected, N pole colelctor electrode with audion VT5 after polar capacitor C9 is connected, with
And the resistance R21 composition that one end is connected with the P pole of Zener diode D8, the other end is connected with the anelectrode of amplifier P；Institute
The junction point of the anelectrode and resistance R15 with adjustable resistance R16 of stating amplifier P is connected, its positive pole can with adjustable resistance R16's
Tune end is connected；The grounded collector of described audion VT5, its base stage are connected with the outfan of amplifier P；Described audion
The base stage of VT4 is connected with the OUT pin of control chip U3；The N pole of described Zener diode D8 adjusts electricity as drift current
The outfan on road is also connected with reference voltage output circuit.
Described integrated stable voltage circuit by voltage stabilizing chip U2, one end is connected with the VIN pin of voltage stabilizing chip U2, the other end with
Resistance R1, the N pole that the cathode output end of diode rectifier U1 is connected after resistance R2 with the GND pin phase of voltage stabilizing chip U2
The Zener diode D1 that connection, P pole are connected with the cathode output end of diode rectifier U1, positive pole is with Zener diode D1's
N pole be connected after ground connection, negative pole OUT pin with voltage stabilizing chip U2 after resistance R3 the polar capacitor C2, Yi Jizheng that are connected
Pole OUT pin with voltage stabilizing chip U2 after resistance R4 is connected, negative pole is connected with reference voltage output circuit after resistance R9
The polar capacitor C3 composition connect；The positive pole of described polar capacitor C3 is connected with the emitter stage of audion VT1.
Described reference voltage output circuit is connected with the colelctor electrode of audion VT1 by audion VT2, audion VT3, P pole
Connect, diode D3 that N pole is connected with the DIS pin of control chip U3 after resistance R6, positive pole is sequentially through resistance R7 and resistance
The polar capacitor C5 that after R8, the N pole with diode D3 is connected, negative pole is connected with the colelctor electrode of audion VT3, one end is with steady
Resistance R13, the P pole that N pole is connected, the other end is connected with the base stage of audion VT3 of pressure diode D8 is with audion VT3's
The diode D4 that emitter stage is connected, N pole is connected with the base stage of audion VT2, one end is connected with the emitter stage of audion VT2
Connect, resistance R11, P pole that one end is connected with the THR pin of control chip U3 after resistance R14 with the base stage phase of audion VT2
Connect, Zener diode D5 that N pole colelctor electrode with audion VT2 after resistance R12 is connected, and positive pole is through resistance R10
Be connected with the THR pin of control chip U3 afterwards, negative pole is collectively forming reference voltage output circuit with the N of Zener diode D5
The polar capacitor C6 composition of outfan.
For practical effect of the present utility model, described control chip U3 the most preferentially uses the integrated chip of NE555
Realize；The most described voltage stabilizing chip U2 the most preferentially have employed the integrated chip of AN7812 and realizes.
This utility model compared with prior art, has the following advantages and beneficial effect:
(1) this utility model can reduce the power consumption of supply voltage and electric current, and can effectively eliminate the ripple in electric current,
Ensuring that this utility model can export stable voltage and current, the electric wave being effectively prevented triangle wave voltage occurs non-
Linear distortion.
(2) this utility model can carry out offset correction, to prevent from being produced output electric current by current source to the electric current of output
Deviation reference current value, ensures that the stability of the electric current that this utility model exports.
(3) service efficiency of the present utility model is up to more than 95%, so that this utility model effectively raises triangle
Wave voltage amplitude and power utilization rate.
(4) voltage stabilizing chip of the present utility model have employed the integrated chip of AN7812 and realizes, and the service behaviour of this chip is steady
Fixed, this chip can effectively improve stablizing of output voltage of the present utility model and electric current with the electronic component of periphery after combining
Property.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the electrical block diagram that drift current of the present utility model adjusts circuit.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, this utility model is described in further detail, but reality of the present utility model
The mode of executing is not limited to this.
Embodiment
As it is shown in figure 1, this utility model is mainly by control chip U3, transformator T, audion VT1, diode rectifier
U1, resistance R5, polar capacitor C1, polar capacitor C4, diode D2, drift current adjusts circuit, integrated stable voltage circuit, Yi Jiji
Quasi-voltage follower circuit forms.
During connection, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, its negative pole and two
The cathode output end of pole pipe commutator U1 is connected.The P pole of diode D2 after resistance R5 with the VCC pin phase of control chip U3
Connect, its N pole is connected with the TRI pin of control chip U3.The positive pole of polar capacitor C4 is connected with the base stage of audion VT1
Connect, its negative pole is connected with the RES pin of control chip U3.Drift current adjusts circuit and is serially connected in the OUT pipe of control chip U3
Between foot and reference voltage output circuit.Integrated stable voltage circuit is serially connected in the emitter stage of diode rectifier U1 and audion VT1
Between.Reference voltage output circuit is connected with colelctor electrode and the control chip U3 of audion VT1 respectively.
The Same Name of Ends of the secondary inductance coil of described transformator T is connected with one of them input of diode rectifier U1
Connect, its non-same polarity is connected with another input of diode rectifier U1；The GND pin of described control chip U3 connects
Ground；The base stage of described audion VT1 is connected with the VCC pin of control chip U3；Described integrated stable voltage circuit and reference voltage
Output circuit is connected；The Same Name of Ends of described transformator T former limit inductance coil is connected with external power source respectively with non-same polarity.
Further, described integrated stable voltage circuit is by voltage stabilizing chip U2, resistance R1, resistance R2, resistance R3, resistance R4, electricity
Resistance R9, polar capacitor C2, polar capacitor C3, and Zener diode D1 composition.
During connection, one end of resistance R1 is connected with the VIN pin of voltage stabilizing chip U2, its other end and diode rectifier
The cathode output end of U1 is connected.The N pole of Zener diode D1 GND pin with voltage stabilizing chip U2 after resistance R2 is connected,
Its P pole is connected with the cathode output end of diode rectifier U1.
Meanwhile, after the positive pole of polar capacitor C2 is connected with the N pole of Zener diode D1, ground connection, its negative pole are after resistance R3
It is connected with the OUT pin of voltage stabilizing chip U2.The positive pole of polar capacitor C3 after resistance R4 with the OUT pin phase of voltage stabilizing chip U2
Connect, its negative pole is connected with reference voltage output circuit after resistance R9.The positive pole of described polar capacitor C3 and audion VT1
Emitter stage be connected.
Further, described reference voltage output circuit is by audion VT2, audion VT3, resistance R6, resistance R7, electricity
Resistance R8, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, polar capacitor C5, polar capacitor C6, diode D3,
Diode D4, and Zener diode D5 composition.
During connection, the P pole of diode D3 is connected with the colelctor electrode of audion VT1, its N pole after resistance R6 with control core
The DIS pin of sheet U3 is connected.The positive pole of polar capacitor C5 is sequentially extremely connected through resistance R7 N with diode D3 after resistance R8
Connect, its negative pole is connected with the colelctor electrode of audion VT3.One end of resistance R13 is connected with the N pole of Zener diode D8, it
The other end is connected with the base stage of audion VT3.The P pole of diode D4 is connected with the emitter stage of audion VT3, its N pole with
The base stage of audion VT2 is connected.One end of resistance R11 is connected with the emitter stage of audion VT2, its one end and control chip
The THR pin of U3 is connected.
Meanwhile, the P pole of Zener diode D5 base stage with audion VT2 after resistance R14 is connected, its N pole is through resistance
After R12, the colelctor electrode with audion VT2 is connected.The positive pole of polar capacitor C6 is managed with the THR of control chip U3 after resistance R10
Foot is connected, the N of its negative pole and Zener diode D5 is collectively forming the outfan of reference voltage output circuit.
As in figure 2 it is shown, described drift current adjusts electricity routing amplifier P, audion VT4, audion VT5, resistance R15,
Adjustable resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, polar capacitor C7, polarity electricity
Hold C8, polar capacitor C9, diode D6, diode D7, and Zener diode D8 composition.
During connection, the P pole of diode D6 is connected with the base stage of audion VT4, its N pole is sequentially through resistance R15 and adjustable
After resistance R16, the emitter stage with audion VT4 is connected.The positive pole of polar capacitor C7 after resistance R17 with the base of audion VT4
Ground connection after pole is connected, its negative pole is connected with the negative pole of amplifier P.The positive pole of polar capacitor C8 and the outfan of amplifier P
Be connected, its negative pole negative pole with amplifier P after resistance R18 is connected.
Meanwhile, one end of resistance R20 be connected with the negative electrode of amplifier P, its other end ground connection.The N pole of diode D7
Be attached with the mode of audion VT5, its P pole positive pole with amplifier P after resistance R19 is connected.Zener diode D8
P pole emitter stage with audion VT5 after resistance R22 be connected, its N pole after polar capacitor C9 with the collection of audion VT5
Electrode is connected.One end of resistance R21 is connected with the P pole of Zener diode D8, the anelectrode phase of its other end and amplifier P
Connect.
The anelectrode of described amplifier P is connected with the junction point of adjustable resistance R16 with resistance R15, its positive pole is with adjustable
The adjustable end of resistance R16 is connected；The grounded collector of described audion VT5, its base stage are connected with the outfan of amplifier P
Connect；The base stage of described audion VT4 is connected with the OUT pin of control chip U3；The N pole of described Zener diode D8 is as partially
Move the outfan of matrix current adjustment circuit and be connected with reference voltage output circuit.
During operation, this utility model can reduce the power consumption of supply voltage and electric current, and can effectively eliminate in electric current
Ripple, ensures that this utility model can export stable voltage and current, is effectively prevented the electric wave of triangle wave voltage
Non-linear distortion occurs.This utility model can carry out offset correction, to prevent from being produced output by current source to the electric current of output
Electric current deviation reference current value, ensures that the stability of the electric current that this utility model exports.
Meanwhile, service efficiency of the present utility model is up to more than 95%, so that this utility model effectively raises three
Angle wave voltage amplitude and power utilization rate.Voltage stabilizing chip U2 of the present utility model have employed the integrated chip of AN7812 and realizes, should
The stable work in work of chip, this chip can effectively improve output of the present utility model after combining with peripheral electronic component
The stability of voltage and current.For practical effect of the present utility model, described control chip U3 the most preferentially uses high property
The integrated chip of NE555 of energy realizes.
According to above-described embodiment, can well realize this utility model.
Claims (6)
1. the integrated voltage-stabilized formula constant current source adjusting circuit based on drift current, it is characterised in that main by control chip
U3, transformator T, diode rectifier U1, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and diode
The polar capacitor C1 that the cathode output end of commutator U1 is connected, audion VT1, P pole after resistance R5 with control chip U3's
The base stage of the diode D2 that VCC pin is connected, N pole is connected with the TRI pin of control chip U3, positive pole and audion VT1
Be connected, polar capacitor C4 that negative pole is connected with the RES pin of control chip U3, be serially connected in diode rectifier U1 and three poles
Integrated stable voltage circuit between the emitter stage of pipe VT1, the base being connected with colelctor electrode and the control chip U3 of audion VT1 respectively
Quasi-voltage follower circuit, and it is serially connected in the drift current between OUT pin and the reference voltage output circuit of control chip U3
Adjustment circuit forms；The Same Name of Ends of the secondary inductance coil of described transformator T inputs with one of them of diode rectifier U1
End is connected, its non-same polarity is connected with another input of diode rectifier U1；The GND pipe of described control chip U3
Foot ground connection；The base stage of described audion VT1 is connected with the VCC pin of control chip U3；Described integrated stable voltage circuit and benchmark
Voltage follower circuit is connected.
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current the most according to claim 1, its feature
Being, described drift current adjusts electricity routing amplifier P, audion VT4, the base stage phase of audion VT5, P pole and audion VT4
Connect, diode D6 that N pole is sequentially connected through resistance R15 emitter stage with audion VT4 after adjustable resistance R16, positive pole
After resistance R17 the base stage with audion VT4 be connected, negative pole be connected with the negative pole of amplifier P after the polar capacitor of ground connection
C7, the polar capacitor that positive pole is connected with the outfan of amplifier P, negative pole negative pole with amplifier P after resistance R18 is connected
C8, one end is connected with the negative electrode of amplifier P, resistance R20, the N pole of other end ground connection is carried out even with the mode of audion VT5
Connect, diode D7, P pole that P pole positive pole with amplifier P after resistance R19 is connected after resistance R22 with audion VT5's
The Zener diode D8, Yi Jiyi that emitter stage is connected, N pole colelctor electrode with audion VT5 after polar capacitor C9 is connected
The resistance R21 composition that end is connected with the P pole of Zener diode D8, the other end is connected with the anelectrode of amplifier P；Described put
The anelectrode of big device P is connected with the junction point of adjustable resistance R16 with resistance R15, its positive pole and the adjustable end of adjustable resistance R16
It is connected；The grounded collector of described audion VT5, its base stage are connected with the outfan of amplifier P；Described audion VT4
Base stage be connected with the OUT pin of control chip U3；The N pole of described Zener diode D8 adjusts circuit as drift current
Outfan is also connected with reference voltage output circuit.
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current the most according to claim 2, its feature
Being, described integrated stable voltage circuit is by voltage stabilizing chip U2, and one end is connected with the VIN pin of voltage stabilizing chip U2, the other end and two
Resistance R1, the N pole that the cathode output end of pole pipe commutator U1 is connected GND pin with voltage stabilizing chip U2 after resistance R2 is connected
Connect, Zener diode D1 that P pole is connected with the cathode output end of diode rectifier U1, the N of positive pole and Zener diode D1
Pole be connected after the polar capacitor C2 that is connected of ground connection, negative pole OUT pin with voltage stabilizing chip U2 after resistance R3, and positive pole
After resistance R4, the OUT pin with voltage stabilizing chip U2 is connected, negative pole is connected with reference voltage output circuit after resistance R9
Polar capacitor C3 composition；The positive pole of described polar capacitor C3 is connected with the emitter stage of audion VT1.
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current the most according to claim 3, its feature
Being, described reference voltage output circuit is by audion VT2, and audion VT3, P pole is connected with the colelctor electrode of audion VT1, N
The diode D3 that pole is connected with the DIS pin of control chip U3 after resistance R6, positive pole is sequentially after resistance R7 and resistance R8
Be connected with the N pole of diode D3, polar capacitor C5 that negative pole is connected with the colelctor electrode of audion VT3, one end and voltage stabilizing two
Resistance R13, the P pole that the N pole of pole pipe D8 is connected, the other end is connected with the base stage of audion VT3 and the transmitting of audion VT3
The diode D4 that pole is connected, N pole is connected with the base stage of audion VT2, one end is connected with the emitter stage of audion VT2,
Resistance R11, the P pole that one end is connected with the THR pin of control chip U3 base stage with audion VT2 after resistance R14 is connected
Connect, Zener diode D5 that N pole colelctor electrode with audion VT2 after resistance R12 is connected, and positive pole is after resistance R10
Be connected with the THR pin of control chip U3, negative pole is collectively forming the defeated of reference voltage output circuit with the N of Zener diode D5
Go out the polar capacitor C6 composition of end.
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current the most according to claim 4, its feature
Being, described voltage stabilizing chip U2 is the integrated chip of AN7812.
A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current the most according to claim 4, its feature
Being, described control chip U3 is the integrated chip of NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620578595.3U CN205693577U (en) | 2016-06-12 | 2016-06-12 | A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620578595.3U CN205693577U (en) | 2016-06-12 | 2016-06-12 | A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205693577U true CN205693577U (en) | 2016-11-16 |
Family
ID=57427738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620578595.3U Expired - Fee Related CN205693577U (en) | 2016-06-12 | 2016-06-12 | A kind of integrated voltage-stabilized formula constant current source adjusting circuit based on drift current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205693577U (en) |
-
2016
- 2016-06-12 CN CN201620578595.3U patent/CN205693577U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Yuxiong Inventor before: Wu Liqing |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170420 Address after: 516000 Guangdong Province, Huizhou city Huiyang District of new town Patentee after: XINGMAO (HUIYANG) ELECTRICAL APPLIANCE CO.,LTD. Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170420 Address after: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 362300 Fujian city of Quanzhou province Nanan City Fu Kang Mei Zhen iron industrial district Patentee before: NANAN RUIXIN BIOTECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20180612 |