CN105958845A - Integrated voltage-stabilizing type constant-current power supply - Google Patents
Integrated voltage-stabilizing type constant-current power supply Download PDFInfo
- Publication number
- CN105958845A CN105958845A CN201610411497.5A CN201610411497A CN105958845A CN 105958845 A CN105958845 A CN 105958845A CN 201610411497 A CN201610411497 A CN 201610411497A CN 105958845 A CN105958845 A CN 105958845A
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- CN
- China
- Prior art keywords
- pole
- audion
- resistance
- voltage
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The invention discloses an integrated voltage-stabilizing type constant-current power supply. The integrated voltage-stabilizing type constant-current power supply is characterized by mainly comprising a control chip U3, a transformer T, a diode rectifier U1, a polar capacitor C1, a triode VT1, a diode D2, a polar capacitor C4, an integrated voltage-stabilizing circuit and a reference voltage output circuit, wherein the positive electrode of the polar capacitor C4 is connected with the base electrode of the triode VT1 while the negative electrode of the polar capacitor C4 is connected with the RES pin of the control chip U3; the integrated voltage-stabilizing circuit is serially connected between the diode rectifier U1 and the emitting electrode of the triode VT1; and the reference voltage output circuit is connected with the collector electrode of the triode VT1 and the control chip U3 separately. By adoption of the integrated voltage-stabilizing type constant-current power supply, the power supply voltage and the current power consumption can be lowered; in addition, ripple wave in the current can be effectively eliminated, so that it is ensured that the integrated voltage-stabilizing type constant-current power supply can output stable voltage and current, and nonlinear distortion of the triangular wave voltage is effectively prevented.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of integrated voltage-stabilized formula constant current source.
Background technology
Along with the development of science and technology, the electronic product such as TV, computer occurs in the life of people the most in a large number and works as
In, the display device such as telescreen, computer monitor all can use triangular voltage sweep circuit.But,
The most general triangular wave system is all to use analog circuit, by a constant current source electric capacity is charged and
Produce Linear Triangular wave voltage.But, there is output voltage and unstable the asking of electric current in existing constant current source
Topic, 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.
Summary of the invention
It is an object of the invention 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 integrated voltage-stabilized formula constant current source.
The present invention is achieved through the following technical solutions: a kind of integrated voltage-stabilized formula constant current source, mainly by controlling
The cathode output end of chip U3, transformator T, diode rectifier U1, positive pole and diode rectifier U1
Be connected, polar capacitor C1 that negative pole is connected with the cathode output end of diode rectifier U1, audion
VT1, P pole VCC pin with control chip U3 after resistance R5 is connected, N pole and control chip
The diode D2 that the TRI pin of U3 is connected, positive pole is connected with the base stage of audion VT1, negative pole with
The polar capacitor C4 that the RES pin of control chip U3 is connected, is serially connected in diode rectifier U1 and three
Integrated stable voltage circuit between the emitter stage of pole pipe VT1, and respectively with colelctor electrode and the control of audion VT1
The reference voltage output circuit composition that coremaking sheet U3 is connected；The secondary inductance coil of described transformator T same
Name end is connected with one of them input of diode rectifier U1, its non-same polarity and diode rectifier
Another input of U1 is connected；The GND pin ground connection of described control chip U3；Described audion
The base stage of VT1 is connected with the VCC pin of control chip U3；Described integrated stable voltage circuit and reference voltage
Output circuit is connected.
Described integrated stable voltage circuit is connected with the VIN pin of voltage stabilizing chip U2 by voltage stabilizing chip U2, one end
Connect, resistance R1, N pole that the other end is connected with the cathode output end of diode rectifier U1 is through resistance R2
Afterwards the GND pin with voltage stabilizing chip U2 be connected, the cathode output end phase of P pole and diode rectifier U1
Connect Zener diode D1, positive pole be connected with the N pole of Zener diode D1 after ground connection, negative pole through electricity
The polar capacitor C2 being connected with the OUT pin of voltage stabilizing chip U2 after resistance R3, and positive pole is through resistance R4
Afterwards the OUT pin with voltage stabilizing chip U2 be connected, negative pole after resistance R9 with reference voltage output circuit
The polar capacitor C3 composition being connected；The positive pole of described polar capacitor C3 and the emitter stage phase of audion VT1
Connect.
Described reference voltage output circuit is by audion VT2, audion VT3, P pole and audion VT1
The diode that colelctor electrode is connected, N pole is connected with the DIS pin of control chip U3 after resistance R6
D3, positive pole is sequentially connected through resistance R7 N pole with diode D3 after resistance R8, negative pole and three poles
The polar capacitor C5 that the colelctor electrode of pipe VT3 is connected, one end is connected with the OUT pin of control chip U3
Connect, the transmitting of resistance R13, P pole that the other end is connected with the base stage of audion VT3 and audion VT3
The diode D4 that pole is connected, N pole is connected with the base stage of audion VT2, one end and audion VT2
Resistance R11, the P pole that emitter stage is connected, one end is connected with the THR pin of control chip U3 through electricity
Be connected with the base stage of audion VT2 after resistance R14, N pole after resistance R12 with the collection of audion VT2
The Zener diode D5 that electrode is connected, and positive pole manages with the THR of control chip U3 after resistance R10
Foot is connected, the N of negative pole and Zener diode D5 is collectively forming the outfan of reference voltage output circuit
Polar capacitor C6 forms.
For the practical effect of the present invention, described control chip U3 the most preferentially uses the integrated core of NE555
Sheet realizes；The most described voltage stabilizing chip U2 the most preferentially have employed the integrated chip of AN7812 and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention can reduce the power consumption of supply voltage and electric current, and can effectively eliminate the stricture of vagina in electric current
Ripple, ensures that the present invention can export stable voltage and current, is effectively prevented triangle wave voltage
There is non-linear distortion in electric wave.
(2) service efficiency of the present invention is up to more than 95%, so that the present invention effectively raises triangular wave
Voltage amplitude and power utilization rate.
(3) the voltage stabilizing chip of the present invention have employed the integrated chip of AN7812 and realizes, the workability of this chip
Can be stable, this chip can effectively improve after combining with the electronic component of periphery the present invention output voltage and
The stability of electric current.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U3, transformator T, audion VT1, diode
Commutator U1, resistance R5, polar capacitor C1, polar capacitor C4, diode D2, integrated stable voltage circuit,
And reference voltage output circuit composition.
During connection, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, it
Negative pole is connected with the cathode output end of diode rectifier U1.The P pole of diode D2 is after resistance R5
Be connected with the VCC pin of control chip U3, 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, the RES of its negative pole and control chip U3
Pin is connected.Integrated stable voltage circuit be serially connected in diode rectifier U1 and audion VT1 emitter stage it
Between.Reference voltage output circuit is connected with colelctor electrode and the control chip U3 of audion VT1 respectively.
One of them of the Same Name of Ends of the secondary inductance coil of described transformator T and diode rectifier U1 is defeated
Enter end be connected, its non-same polarity is connected with another input of diode rectifier U1；Described control
The GND pin ground connection of chip U3；The VCC pipe of the base stage of described audion VT1 and control chip U3
Foot is connected；Described integrated stable voltage circuit is connected with reference voltage output circuit；The described former limit of transformator T
The Same Name of Ends of 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, resistance R9, polar capacitor C2, polar capacitor C3, and Zener diode D1 form.
During connection, one end of resistance R1 is connected with the VIN pin of voltage stabilizing chip U2, its other end with
The cathode output end of diode rectifier U1 is connected.The N pole of Zener diode D1 after resistance R2 with
The GND pin of voltage stabilizing chip U2 is connected, the cathode output end phase of its P pole and diode rectifier U1
Connect.
Meanwhile, ground connection after the positive pole of polar capacitor C2 is connected with the N pole of Zener diode D1, it bears
Pole OUT pin with voltage stabilizing chip U2 after resistance R3 is connected.The positive pole of polar capacitor C3 is through resistance
After R4, the OUT pin with voltage stabilizing chip U2 is connected, its negative pole exports with reference voltage after resistance R9
Circuit is connected.The positive pole of described polar capacitor C3 is connected with the emitter stage of audion VT1.
Further, described reference voltage output circuit is by audion VT2, audion VT3, resistance
R6, resistance R7, 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 form.
During connection, the P pole of diode D3 is connected with the colelctor electrode of audion VT1, its N pole is through resistance
After R6, the DIS pin with control chip U3 is connected.The positive pole of polar capacitor C5 sequentially through resistance R7 and
After resistance R8, the N pole with diode D3 is connected, its negative pole is connected with the colelctor electrode of audion VT3.
One end of resistance R13 is connected with the OUT pin of control chip U3, its other end and audion VT3
Base stage is connected.The P pole of diode D4 is connected with the emitter stage of audion VT3, its N pole and three poles
The base stage of pipe VT2 is connected.One end of resistance R11 is connected with the emitter stage of audion VT2, its one end
It is connected with the THR pin of control chip U3.
Meanwhile, the P pole of Zener diode D5 base stage with audion VT2 after resistance R14 be connected,
Its N pole colelctor electrode with audion VT2 after resistance R12 is connected.The positive pole of polar capacitor C6 is through electricity
Be connected with the THR pin of control chip U3 after resistance R10, its negative pole is total to the N of Zener diode D5
With the outfan forming reference voltage output circuit.
During operation, the present invention can reduce the power consumption of supply voltage and electric current, and can effectively eliminate in electric current
Ripple, ensure that the present invention can export stable voltage and current, be effectively prevented triangular wave electricity
Extrude existing non-linear distortion.
Meanwhile, the service efficiency of the present invention is up to more than 95%, so that the present invention effectively raises triangle
Wave voltage amplitude and power utilization rate.The voltage stabilizing chip U2 of the present invention have employed the integrated chip of AN7812 and comes real
Existing, the stable work in work of this chip, this chip can effectively improve after combining with peripheral electronic component
The output voltage of the present invention and the stability of electric current.For the practical effect of the present invention, described control core
Sheet U3 the most preferentially uses the integrated chip of high performance NE555 to realize.
According to above-described embodiment, can well realize the present invention.
Claims (5)
1. an integrated voltage-stabilized formula constant current source, 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 two
The polar capacitor C1 that the cathode output end of pole pipe commutator U1 is connected, audion VT1, P pole is through resistance
After R5, the VCC pin with control chip U3 is connected, N pole is connected with the TRI pin of control chip U3
The diode D2 connect, positive pole is connected with the base stage of audion VT1, the RES of negative pole and control chip U3
The polar capacitor C4 that pin is connected, be serially connected in diode rectifier U1 and audion VT1 emitter stage it
Between integrated stable voltage circuit, and be connected with the colelctor electrode of audion VT1 and control chip U3 respectively
Reference voltage output circuit forms；The Same Name of Ends of the secondary inductance coil of described transformator T and diode rectification
One of them input of device U1 is connected, another input of its non-same polarity and diode rectifier U1
End is connected；The GND pin ground connection of described control chip U3；The base stage of described audion VT1 and control
The VCC pin of chip U3 is connected；Described integrated stable voltage circuit is connected with reference voltage output circuit.
A kind of integrated voltage-stabilized formula constant current source the most according to claim 1, it is characterised in that 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
Resistance R1, the N pole being connected with the cathode output end of diode rectifier U1 after resistance R2 with voltage stabilizing core
The voltage stabilizing that the GND pin of sheet U2 is connected, P pole is connected with the cathode output end of diode rectifier U1
Diode D1, positive pole be connected with the N pole of Zener diode D1 after ground connection, negative pole after resistance R3 with
The polar capacitor C2 that the OUT pin of voltage stabilizing chip U2 is connected, and positive pole after resistance R4 with voltage stabilizing
The OUT pin of chip U2 is connected, negative pole is connected with reference voltage output circuit after resistance R9
Polar capacitor C3 forms；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 the most according to claim 2, it is characterised in that described
Reference voltage output circuit by audion VT2, the colelctor electrode phase of audion VT3, P pole and audion VT1
The diode D3 that connection, N pole are connected with the DIS pin of control chip U3 after resistance R6, positive pole
Sequentially be connected through resistance R7 N pole with diode D3 after resistance R8, negative pole is with audion VT3's
The polar capacitor C5 that colelctor electrode is connected, one end is connected with the OUT pin of control chip U3, the other end
Resistance R13, the P pole being connected with the base stage of audion VT3 is connected with the emitter stage of audion VT3,
The diode D4 that N pole is connected with the base stage of audion VT2, the emitter stage phase of one end and audion VT2
Resistance R11, the P pole that connection, one end are connected with the THR pin of control chip U3 is after resistance R14
Be connected with the base stage of audion VT2, N pole colelctor electrode with audion VT2 after resistance R12 is connected
Zener diode D5, and positive pole THR pin with control chip U3 after resistance R10 is connected,
The N of negative pole and Zener diode D5 is collectively forming the polar capacitor C6 of the outfan of reference voltage output circuit
Composition.
A kind of integrated voltage-stabilized formula constant current source the most according to claim 3, it is characterised in that described
Voltage stabilizing chip U2 is the integrated chip of AN7812.
A kind of integrated voltage-stabilized formula constant current source the most according to claim 3, it is characterised in that described
Control chip U3 is the integrated chip of NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411497.5A CN105958845A (en) | 2016-06-12 | 2016-06-12 | Integrated voltage-stabilizing type constant-current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411497.5A CN105958845A (en) | 2016-06-12 | 2016-06-12 | Integrated voltage-stabilizing type constant-current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958845A true CN105958845A (en) | 2016-09-21 |
Family
ID=56909051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610411497.5A Pending CN105958845A (en) | 2016-06-12 | 2016-06-12 | Integrated voltage-stabilizing type constant-current power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958845A (en) |
-
2016
- 2016-06-12 CN CN201610411497.5A patent/CN105958845A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160921 |
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| WD01 | Invention patent application deemed withdrawn after publication |