CN108693908A - A kind of voltage-stabilizing constant-source - Google Patents
A kind of voltage-stabilizing constant-source Download PDFInfo
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- CN108693908A CN108693908A CN201810757667.4A CN201810757667A CN108693908A CN 108693908 A CN108693908 A CN 108693908A CN 201810757667 A CN201810757667 A CN 201810757667A CN 108693908 A CN108693908 A CN 108693908A
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- 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
Abstract
The invention discloses a kind of voltage-stabilizing constant-sources, including MCU control display units, power supply unit and power amplification power output unit, the MCU control display units pass through DA converting units, linear voltage stabilization constant current unit and power tube tube voltage drop model- following control unit are connect with power amplification power output unit, the linear voltage stabilization constant current unit is connect with feedback of voltage and current unit, the power amplification power output unit is connect by feedback of voltage and current unit and AD conversion unit with MCU control display units, the feedback of voltage and current unit is also connect with linear voltage stabilization constant current unit, the power driving signal that the power tube tube voltage drop model- following control unit receives the electric energy of power supply unit transmission and linear voltage stabilization constant current unit is sent out, and the electric energy of pressure-stabilizing constant flow is sent out to power amplification power output unit.By the cooperation of power supply unit and power tube tube voltage drop model- following control power supply and linear voltage stabilization constant current unit transformerless transformation of electrical energy is realized instead of transformer.
Description
Technical field
The present invention relates to a kind of power supply more particularly to a kind of voltage-stabilizing constant-sources.
Background technology
China's alternating current is powered using 220V, but in actual use, the voltage that electrical appliance often need not be high in this way, so,
Current electrical appliance is often furnished with adaptable independent current source or power supply processing unit is arranged inside electrical appliance.Often at present
The independent current source seen often uses for special installation power supply, such as the power adaptation used in everyday for laptop power supply
Device, the pressure-stabilizing constant flow source of also promising mini-plant power supply.Independent current source common at present is often to be led to using transformer-supplied
It crosses transformer and carries out the power supply that conversion process is needed by 220V alternating currents are inputted, but this processing mode is but asked in the presence of many
Topic.First, using the independent current source fuselage weight of transformer-supplied, transportation cost is high, is not easy to mobile use;Secondly, transformer
Energy consumption it is big, the loss when transformer carries out power change of a large amount of electric energy, use is economic and environment-friendly;Moreover because transformer
Energy consumption is big, and the calorific value in use is also big, and the probability that transformer tank breaks down is also high.To sum up, it is carried out at present using transformer
The independent current source of transformation of electrical energy, there are fuselage weights, and energy consumption is big, and hardly possible transport, flimsy disadvantage faces so many defect, city
A kind of independent current source without using transformer is needed on field.
Invention content
The present invention provides a kind of voltage-stabilizing constant-sources, it is intended to solve to carry out the independence of transformation of electrical energy using transformer at present
Power supply, there are fuselage weights, and energy consumption is big, hardly possible transport, it is fragile the shortcomings of the problem of.
To achieve the above object, the present invention provides a kind of voltage-stabilizing constant-source, including MCU control display units, power supplys
Unit and power amplification power output unit, the MCU control display units pass through DA converting units, linear voltage stabilization constant current unit
It is connect with power tube tube voltage drop model- following control unit with power amplification power output unit, the linear voltage stabilization constant current unit and electricity
Current voltage feedback unit connects, the power amplification power output unit by feedback of voltage and current unit and AD conversion unit with
MCU control display units connect, and the feedback of voltage and current unit is also connect with linear voltage stabilization constant current unit;The linear voltage stabilization
The feedback signal that constant current unit receives the control signal of DA converting units forwarding and feedback of voltage and current unit is sent, and send out electricity
Source drive signal is to power tube tube voltage drop model- following control unit;The power tube tube voltage drop model- following control unit receives power supply unit
The power driving signal that the electric energy and linear voltage stabilization constant current unit of transmission are sent out, and the electric energy of pressure-stabilizing constant flow is sent out to power amplification
Power output unit.
Specifically, the MCU control display units, receive what feedback of voltage and current unit was sent by AD conversion unit
Feedback of voltage and current signal is simultaneously shown or is alarmed to the voltage and current of output;Receive user's operation by voltage input by user
Current reference value is sent to linear voltage stabilization constant current unit by DA converting units;
The AD conversion unit receives the feedback of voltage and current signal of feedback of voltage and current unit transmission and carries out AD turns
It changes, transformed signal is sent to MCU control display units;
The DA converting units receive the voltage and current a reference value of MCU control display units transmission and carry out DA conversions, will
Transformed signal is sent to linear voltage stabilization constant current unit;
The linear voltage stabilization constant current unit receives the feedback of voltage and current signal that feedback of voltage and current unit is sent to, connects
By the voltage and current reference signal that DA converting units are sent, out-put supply drive signal is sent to power tube tube voltage drop model- following control
Unit;
The power tube tube voltage drop model- following control unit receives the power change of power driving signal control power supply unit,
Electric energy after transformation is forwarded to power amplification power output unit;
The power supply unit receives alternating current input, and carries out electricity under the control of power tube tube voltage drop model- following control unit
It can transformation;
The power amplification power output unit receives the electric energy after transformation and is exported.
Compared with prior art, transformer is not used in a kind of voltage-stabilizing constant-source disclosed by the invention, by the way that power is arranged
Pipe tube voltage drop model- following control power supply and the realization of linear voltage stabilization constant current unit convert the electric energy of power supply unit.It is described linear steady
Constant current unit out-put supply drive signal, power tube tube voltage drop model- following control unit is pressed to control electric energy according to power driving signal and become
The voltage changed, i.e., the variation of the voltage follow power driving signal after transformation of electrical energy and change, pass through and control linear pressure-stabilizing constant flow
Unit out-put supply drive signal can control the voltage and current of output.And linear voltage stabilization constant current unit out-put supply driving letter
It number is influenced by feedback of voltage and current signal and voltage and current reference signal, the feedback of voltage and current effect of signals power drives letter
Number so that power supply output realizes that pressure-stabilizing constant flow, the voltage and current reference signal influence power driving signal and make power supply output real
Existing output valve is adjustable.A kind of voltage-stabilizing constant-source of the present invention, passes through linear voltage stabilization constant current unit and power tube tube voltage drop
Model- following control unit realizes the transformation of electrical energy to alternating current, and transformer is not used, then fuselage weight is not present, and hardly possible transport is fragile
The problem of.Also, the voltage-stabilizing constant-source described in the invention also has calorific value small, exports stable advantage.Due to power tube
Tube voltage drop model- following control unit ensure that output voltage follows power driving signal with certain pressure difference, so output voltage filters out
The HF switch pulse remnants ripple that Switching Power Supply generates, ensure that stable output so that although the voltage-stabilizing constant-source does not have
Using transformer, but remain possessed by the conventional power source using transformer, excellent ripple characteristics.
Further, the power supply unit includes alternating current input module and switch power module, the alternating current input module with
City is electrically connected, and carries out rectifying and wave-filtering to the alternating current of receiving, and electric energy is sent to switch power module by treated;The switch
The input terminal of power module is connect with the output end of alternating current input module, output end and the power tube pipe of the switch power module
The test side of pressure drop model- following control unit connects, feedback end and the power tube tube voltage drop model- following control list of the switch power module
The feedback end connection of member.
A kind of voltage-stabilizing constant-source disclosed by the invention, the power supply unit include alternating current input module and Switching Power Supply mould
Block, alternating current input module carry out rectifying and wave-filtering to the alternating current of input, and obtained electric energy uses for switch power module, also to it
He is powered each unit, and if necessary to integrate other units on the voltage-stabilizing constant-source, which also may be used
To power in addition integrated unit.The switch power module is connect with power tube tube voltage drop model- following control unit, power tube
The output of tube voltage drop model- following control unit detection switch power module, and feedback control is carried out to switch power module, it realizes
Control to transformation of electrical energy passes through switch power module and power tube tube voltage drop model- following control power supply and linear voltage stabilization constant current unit
Cooperation realize transformerless transformation of electrical energy instead of transformer.
Further, a kind of voltage-stabilizing constant-source further includes welding stage supply control unit and heat gun power supply control
Unit, the welding stage supply control unit are connect with power supply unit, receive the power supply of power supply unit, the welding stage power supply control list
Member is connect with MCU control display units, receives the control of MCU control display units;The heat gun supply control unit and electricity
Source unit connects, and receives the power supply of power supply unit, the heat gun supply control unit connect with MCU control display units, connects
It is controlled by MCU control display units.
A kind of voltage-stabilizing constant-source disclosed by the invention further includes welding stage supply control unit and heat gun power supply control list
Member integrates welding stage and heat gun, is a kind of three-in-one power supply, also provided while can provide voltage-stabilizing constant-source welding stage and
The control and power supply of heat gun, current three-in-one power supply is for simple consideration is designed, and the power supply of power unit is using change
Depressor carries out power change, but a kind of three-in-one power supply disclosed by the invention, combines adjustment pipe steady using trailing type Switching Power Supply
Constant current is pressed, the weakness that conventional linear power supply can only rely on transformer-supplied is solved, has fuselage light, low energy consumption, easily transports, hair
Hot small, not easily damaged, the low advantage of failure rate.
Description of the drawings
Fig. 1 is a kind of structure diagram 1 of voltage-stabilizing constant-source of the present invention;
Fig. 2 is a kind of structure diagram 2 of voltage-stabilizing constant-source of the present invention;
Fig. 3 is a kind of embodiment 1 of the power tube tube voltage drop model- following control unit of voltage-stabilizing constant-source of the present invention;
Fig. 4 is a kind of embodiment 2 of the power tube tube voltage drop model- following control unit of voltage-stabilizing constant-source of the present invention;
Fig. 5 is a kind of one embodiment of the linear voltage stabilization constant current unit of voltage-stabilizing constant-source of the present invention;
Fig. 6 is a kind of structure diagram 3 of voltage-stabilizing constant-source of the present invention;
Fig. 7 is a kind of structure diagram 4 of voltage-stabilizing constant-source of the present invention;
Fig. 8 is a kind of structure diagram 5 of voltage-stabilizing constant-source of the present invention;
Fig. 9 is a kind of structure diagram 6 of voltage-stabilizing constant-source of the present invention;
Figure 10 is a kind of one embodiment of the welding stage supply control unit of voltage-stabilizing constant-source of the present invention;
Figure 11 is a kind of wind turbine power control module of the heat gun supply control unit of voltage-stabilizing constant-source of the present invention
One embodiment;
Figure 12 is a kind of heating wire power control module of the heat gun supply control unit of voltage-stabilizing constant-source of the present invention
One embodiment;
Figure 13 is a kind of structure diagram 7 of voltage-stabilizing constant-source of the present invention;
Figure 14 is a kind of one embodiment of the heat-sink unit of voltage-stabilizing constant-source of the present invention.
Specific implementation mode
As shown in Figure 1, a kind of voltage-stabilizing constant-source of the present invention, including MCU control display units, power supply unit and
Power amplification power output unit, the MCU control display units pass through DA converting units, linear voltage stabilization constant current unit and power
Pipe tube voltage drop model- following control unit is connect with power amplification power output unit, the linear voltage stabilization constant current unit and voltage and current
Feedback unit connects, and the power amplification power output unit is controlled by feedback of voltage and current unit and AD conversion unit with MCU
Display unit connection processed, the feedback of voltage and current unit are also connect with linear voltage stabilization constant current unit;The linear voltage stabilization constant current
The feedback signal that unit receives the control signal of DA converting units forwarding and feedback of voltage and current unit is sent, and send out power supply drive
Signal is moved to power tube tube voltage drop model- following control unit;The power tube tube voltage drop model- following control unit receives power supply unit transmission
Electric energy and the power driving signal that sends out of linear voltage stabilization constant current unit, and send out the electric energy of pressure-stabilizing constant flow to power amplification power supply
Output unit.Specifically, the MCU control display units, receive feedback of voltage and current unit and are sent by AD conversion unit
Feedback of voltage and current signal and the voltage and current of output is shown or is alarmed;Receive user's operation by electricity input by user
Current voltage a reference value is sent to linear voltage stabilization constant current unit by DA converting units;The AD conversion unit, receives voltage and current
The feedback of voltage and current signal of feedback unit transmission is simultaneously AD converted, and it is single that transformed signal is sent to MCU control displays
Member;The DA converting units receive the voltage and current a reference value of MCU control display units transmission and carry out DA conversions, will convert
Signal afterwards is sent to linear voltage stabilization constant current unit;The linear voltage stabilization constant current unit receives the transmission of feedback of voltage and current unit
The feedback of voltage and current signal given receives the voltage and current reference signal of DA converting units transmission, out-put supply drive signal hair
It send to power tube tube voltage drop model- following control unit;The power tube tube voltage drop model- following control unit, receives power driving signal control
Electric energy after transformation is forwarded to power amplification power output unit by the power change of power supply unit processed;The power supply unit, connects
It is inputted by alternating current, and transformation of electrical energy is carried out under the control of power tube tube voltage drop model- following control unit;The power amplification power supply
Output unit receives the electric energy after transformation and is exported.
Compared with prior art, transformer is not used in a kind of voltage-stabilizing constant-source disclosed by the invention, by the way that power is arranged
Pipe tube voltage drop model- following control power supply and the realization of linear voltage stabilization constant current unit convert the electric energy of power supply unit.It is described linear steady
Constant current unit out-put supply drive signal, power tube tube voltage drop model- following control unit is pressed to control electric energy according to power driving signal and become
The voltage changed, i.e., the variation of the voltage follow power driving signal after transformation of electrical energy and change, pass through and control linear pressure-stabilizing constant flow
Unit out-put supply drive signal can control the voltage and current of output.And linear voltage stabilization constant current unit out-put supply driving letter
It number is influenced by feedback of voltage and current signal and voltage and current reference signal, the feedback of voltage and current effect of signals power drives letter
Number so that power supply output realizes that pressure-stabilizing constant flow, the voltage and current reference signal influence power driving signal and make power supply output real
Existing output valve is adjustable.A kind of voltage-stabilizing constant-source of the present invention, passes through linear voltage stabilization constant current unit and power tube tube voltage drop
Model- following control unit realizes the transformation of electrical energy to alternating current, and transformer is not used, then fuselage weight is not present, and hardly possible transport is fragile
The problem of.Also, the voltage-stabilizing constant-source described in the invention also has calorific value small, exports stable advantage.Due to power tube
Tube voltage drop model- following control unit ensure that output voltage follows power driving signal with certain pressure difference, so output voltage filters out
The HF switch pulse remnants ripple that Switching Power Supply generates, ensure that stable output so that although the voltage-stabilizing constant-source does not have
Using transformer, but remain possessed by the conventional power source using transformer, excellent ripple characteristics.
As shown in Fig. 2, the power supply unit includes alternating current input module and switch power module, the alternating current input module
It is electrically connected with city, rectifying and wave-filtering is carried out to the alternating current of receiving, and electric energy is sent to switch power module by treated;It is described to open
The input terminal of powered-down source module is connect with the output end of alternating current input module, the output end and power tube of the switch power module
The test side of tube voltage drop model- following control unit connects, feedback end and the power tube tube voltage drop model- following control of the switch power module
The feedback end of unit connects.A kind of voltage-stabilizing constant-source disclosed by the invention, the power supply unit include alternating current input module and
Switch power module, alternating current input module carry out rectifying and wave-filtering to the alternating current of input, and obtained electric energy is for switch power module
It uses, also other each units is powered, if necessary to integrate other units on the voltage-stabilizing constant-source, the alternating current is defeated
Entering module can also power in addition integrated unit.The switch power module connects with power tube tube voltage drop model- following control unit
It connects, the output of power tube tube voltage drop model- following control unit detection switch power module, and feedback control is carried out to switch power module
System, realizes the control to transformation of electrical energy, by switch power module and power tube tube voltage drop model- following control power supply and linearly steady
The cooperation of pressure constant current unit realizes transformerless transformation of electrical energy instead of transformer.
As shown in figure 3, the power tube tube voltage drop model- following control unit includes the 8th optocoupler U8, the 43rd to the 40th
Seven resistance (R43-R47), the tenth to 13 triodes (Q10-Q13), the 37th capacitance C37, the 38th capacitance C38 and
Seven connection terminal J7;The test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance R43 and the 8th light
The diode cathode of coupling U8 connects, and the test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance R43
It is connect with the 44th resistance R44 with the diode cathode of the 8th optocoupler U8;The diode cathode of the 8th optocoupler U8 also with
The emitter of 11st triode Q11 connects, and the transistor collector of the 8th optocoupler U8 is connect by the 37th capacitance C37
Ground, the transistor emitter ground connection of the 8th optocoupler U8;The feedback end of the power tube tube voltage drop model- following control unit and
The transistor collector of eight optocoupler U8 connects;The grounded collector of the 11st triode Q11, the 11st triode
The base stage of Q11 also passes through the 45th resistance by the 38th capacitance C38 ground connection, the base stage of the 11st triode Q11
R45 is connect with the 7th connection terminal J7;The 7th connection terminal J7 also passes through the 46th resistance R46 ground connection;Described tenth
Triode Q10, the 12nd triode Q12 and the 13rd triode Q13 common collectors with power tube tube voltage drop model- following control list
The test side connection of member, the emitter of the tenth triode Q10 are connect with the 7th connection terminal J7, the tenth triode
The base stage of Q10 is connect with the emitter of the 12nd triode Q12, base stage and the 13rd pole of the 12nd triode Q12
The emitter of pipe Q13 connects, and the base stage of the 13rd triode Q13 is connect by the 47th resistance R47 with emitter, institute
State control terminal and linear voltage stabilization constant current unit of the base stage as power tube tube voltage drop model- following control unit of the 13rd triode Q13
Connection.
In embodiment as shown in Figure 2, Dr iver are power driving signals, after triode carries out Current amplifier, are adjusted
The emitter of homogeneous tube Q10 is connected to the 3 of J7,4 feet, and 1,2 feet of J7 connect Switching Power Supply output ground.The collector of adjustment pipe Q10 connects
Switching Power Supply exports just.Optocoupler luminous two is connected to by the emitter of Q11, the output voltage backfeed loop of U8 optocouplers composition, Q11
The cathode of pole pipe, the anode of optocoupler light emitting diode are connected to Switching Power Supply output by current-limiting resistance R43 and are just namely adjusting
The collector of pipe Q10,3,4 feet that the base stage of Q11 is connected to J7 by current-limiting resistance R45 namely adjust the emitter of pipe Q10.
Q11 is 2N5401, is PNP pipe.When the pole E, B of Q11 obtains the positive bias-voltage of 0.5V or so, Q11 one Ib electric current of generation.Ib
The circuit of electric current is:The collector that electric current just, namely adjusts pipe Q10 from Switching Power Supply output flows through R4, arrives U8 internal illuminations
The anode of diode, the cathode for arriving U8 interior light emitting diodes again will have the voltage of 2V or so that can just lead because of light emitting diode
It is logical, there is the voltage of 2V or so on light emitting diode, then arrive the emitter of Q11, arrive the base stage of Q11 again, by R45 to Q10
Emitter, finally by R46 flow to Switching Power Supply output ground.After Ib electric currents are formed, the EC of Q11 can be connected, and form Ic electricity
Stream, the circuit of Ic electric currents is:Electric current from adjustment pipe Q10 collector flow through R4, to U8 interior light emitting diodes anode, arrive again
Light emitting diode inside the cathode of U8 interior light emitting diodes, U8 optocouplers can shine conducting, then arrive the emitter, again of Q11
Collector to the collector of Q11, Q11 is directly grounded.It can be seen that being more than when between the collector and the emitter of Q10 of Q10
When the voltage of 2.5V, Q11 can be connected, and U8 conductings, the 2 foot voltages reduction of U9 (OB2269), switch power source output voltage can reduce.
In actual use find the 13rd triode Q13 without using, so, the 47th resistance R47 be zero Europe electricity
Resistance.The poles B of Q12 are shorted to by R47 makes Q13 be not used, and power driving signal Driver is put by Q12, Q10 two-stage electric current
Greatly.
When the poles C for Switching Power Supply output being just Q1O, C points are defined as, Switching Power Supply output is defined as common point,
Driver is defined as D points, and the poles E of Q1O are defined as " E " point.Q12 using D1047, Q10 use D880 silicon materials triodes, two
A triode composition is a multiple tube, and two emitters of Q13, Q12, two silicon materials emitter junctions are mutually separated between VD and VE
Pressure-drop theory value be 0.5V+0.5V=1V.Then it obtains:VE=VD-1.
Assuming that VD is kept constant, then VE is kept constant.At this time if VCE>2.5V, Q11 can be connected, U8 conductings, U9
(OB2269) 2 foot voltages reduce, and VC can be reduced.VC can be reduced, because VE is constant, VCE can be reduced.So obtaining this
Circuit can make VCE constant in 2.5V.VCE=2.5V.
VC=VE+2.5V=VD+1.5V is obtained by VCE=2.5V and VE=VD-1.It draws a conclusion:The output of Switching Power Supply
Voltage can follow the variation of Driver and change always;The output voltage of Switching Power Supply is always than Driver high 1.5V;Adjustment pipe
CE pole pipe pressure drops remain at 2.5V.This makes the present invention realize that it is switching power circuit characteristic to follow.
As shown in figure 3, the power tube tube voltage drop model- following control unit includes the 8th optocoupler U8, the 43rd to the 40th
Seven resistance (R43-R47), the 11st to 13 triodes (Q11-Q13), the 37th capacitance C37, the 38th capacitance C38 and
7th connection terminal J7;The test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance R43 and the 8th
The diode cathode of optocoupler U8 connects, and the test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance
R43 and the 44th resistance R44 are connect with the diode cathode of the 8th optocoupler U8;The diode cathode of the 8th optocoupler U8 is also
It is connect with the emitter of the 11st triode Q11, the transistor collector of the 8th optocoupler U8 passes through the 37th capacitance C37
Ground connection, the transistor emitter ground connection of the 8th optocoupler U8;The feedback end of the power tube tube voltage drop model- following control unit with
The transistor collector of 8th optocoupler U8 connects;The grounded collector of the 11st triode Q11, the 11st triode
The base stage of Q11 also passes through the 45th resistance by the 38th capacitance C38 ground connection, the base stage of the 11st triode Q11
R45 is connect with the 7th connection terminal J7;The 7th connection terminal J7 also passes through the 46th resistance R46 ground connection;Described tenth
Two triode Q12 and the 13rd triode Q13 common collectors are connect with the test side of power tube tube voltage drop model- following control unit,
The emitter of the 12nd triode Q12 is connect with the 7th connection terminal J7, the base stage of the 12nd triode Q12 and the
The emitter of 13 triode Q13 connects, and the base stage of the 13rd triode Q13 is connect with the 47th resistance R47, described
47th resistance R47 is connect as the control terminal of power tube tube voltage drop model- following control unit with linear voltage stabilization constant current unit.
In embodiment as shown in Figure 3, two-stage Current amplifier is constituted using Q12 and Q13, it, should relative to previous embodiment
Circuit, which omits, is not used component so that circuit structure is more simple clear.It is fixed when the poles C for Switching Power Supply output being just Q12
Justice is C points, and Switching Power Supply output is defined as common point, and Driver is defined as D points, and the poles E of Q12 are defined as " E " point, the
The earth point of seven connection terminal J7 is defined as output ground G points.C points are Switching Power Supply output points, and E points are voltage stabilizing output point, D points
The voltage ripple of the adjustable regulator circuit output reference voltage signal point being made of amplifier, this point is minimum, and voltage levels
Depending on the potentiometer (0~31V) of voltage is arranged.G points are output ground, and the C, E, D point voltages are C respectively, and E, D point are opposite
In G point voltages.The voltage voltage stabilizing feedback circuit being made of U8 optocouplers and Q11 triodes, detection be 2 points of C E voltage.When
U8 optocouplers are connected when 2 voltages of CE are more than 2.5V, and switch power module is closed, and 2 voltage drops of CE are down to 2.5V.That is
2 voltages of CE can be maintained at 2.5V always.This voltage namely adjusts the CE pole tensions of pipe Q12.Due to Q12CE extremely on have
2.5V pressure drops, Q12, Q13 form a multiple tube emitter following amplifier, and 2 voltages of DE are two emitters of multiple tube emitter follower
Pressure drop 1.2V, multiple tube emitter positively biased, collector are reverse-biased, that is to say, that Q12, Q13 are in linear amplification region always.Such E
Point voltage can follow D point voltages always.That is the voltage on E points, that is, leading-out terminal has filtered out Switching Power Supply generation
HF switch pulse remnants ripple.So this invention ensures that the ripple characteristics that traditional linear power supply is excellent.
The linear voltage stabilization constant current unit includes Voltage Feedback processing module, and voltage compares adjustment module, at current feedback
Module is managed, electric current compares adjustment module and power driving signal generation module, the Voltage Feedback processing module, voltage and current are anti-
The voltage feedback signal of unit feedback is presented, and the voltage feedback signal received is decayed to obtain output voltage signal, it will
Output voltage signal is sent to the comparison end that voltage compares adjustment module;The voltage compares adjustment module, compares termination by electricity
The output voltage signal for pressing feedback processing modules to send, reference edge receive MCU control display units and are sent by DA converting units
Voltage reference signal, output end connect with the first input end of power driving signal generation module, output end output voltage tune
Entire signal;The current feedback processing module, the current feedback signal of feedback of voltage and current unit feedback, and the electricity to receiving
It stays feedback signal to be amplified to obtain output current signal, output current signal is sent to the comparison that electric current compares adjustment module
End;The electric current compares adjustment module, compares the output current signal that termination is sent by current feedback processing module, benchmark termination
By the current reference signal that MCU control display units are sent by DA converting units, output end generates mould with power driving signal
The first input end of block connects, and output end output current adjusts signal;The power driving signal generation module receives voltage ratio
The voltage adjustment signal and electric current sent compared with adjustment module compares the current modifying signal that adjustment module is sent, and obtains power supply drive
Dynamic signal is simultaneously sent to power tube tube voltage drop model- following control unit.
One embodiment of the linear voltage stabilization constant current unit is as shown in figure 5, J2 is connected to power amplification power supply output list
The output end connection of member.The voltage feedback signal and current feedback signal are inputted by J2, U9 and its periphery electricity in the present embodiment
Road constitutes Voltage Feedback processing module, and U14 and its peripheral circuit constitute voltage and compare adjustment module, U15 and its peripheral circuit structure
At current feedback processing module, U13 and its peripheral circuit constitute electric current and compare adjustment module, and Q5 and its peripheral circuit constitute power supply
Drive signal generation module.1 foot of J2 be connected to the P2 of output board, be 0~31V of electric power output voltage feedback signal.This letter
Number pass through U9 (LM741) buffer, by 10 times of decaying of R6, VR1, R38, into 2 feet of U14 (LM741), believes with U_SET
Number compare (2 feet of U14 are the feedback signals of electric power output voltage, compared with the 3 foot U_SET voltages of U14 setting reference signal,
Form regulator circuit), from 6 foot out-put supply drive signal driver0~32V of U14.3 feet of J2 are connected to the R3 of output board
(0.02 Ω/5W) output current sample resistance, be 0~5.1A of electric power outputting current feedback signal (5.1A*0.02 Ω=
0.102V, 0~0.102V).This signal is decayed, into the 3 of U13A by 47 times of amplifications of U15 (OP07) by VR5, R37
Foot is exported from 1 foot of U13A to the poles B of Q6 compared with I_SET signals.Driver is power driving signal, by U14 voltage stabilizing ratios
6 feet compared with device export 0~32V voltages, and the base stage of mainboard Q12 is connected to by current-limiting resistance R32.The poles B of Q6 are connected by R33
To 1 foot of constant current comparator U13A, when the 3 foot voltages (Current feedback voltage) of U13A are defeated more than I_SET voltages, 1 foot of U13A
It is that electric current is arranged, is allowed to go out high level Q6 conductings, drag down driver voltages electric power output voltage is made to be reduced to electric power outputting current
Constant current.POWER_CON is connected to 16 feet of MCU, is connected to the poles B of Q3 by R4, the poles C of Q3 are connected to driver, control electricity
The output in source is turned on and off.U_AD0, U_AD1 are connected to the 44 of MCU, 48 feet, carry out the AD conversion of display voltage.A-AD0,
A-AD1, A-AD2 are connected to 45,46,47 feet of MCU, carry out the AD conversion of display electric current.7 feet of U13B are connected to by R30
The ports PRO_A, the ports PRO_A are connected to 19 feet of MCU.Detection current power is to be in constant current CC or constant pressure (voltage stabilizing) CV shapes
State.
The process of output voltage voltage stabilizing is in the present embodiment:When output voltage it is higher → the 1 foot voltage of J2 is higher → U9 6
Foot voltage is higher → the 2 foot voltages of U14 are higher, due to 3 foot reference voltage U_SET it is constant → the 6 foot voltages of U14 reduce,
Driver point voltages reduction → output voltage reduces.When output voltage it is relatively low → the 6 foot voltages of 1 foot low voltage → U9 of J2 are inclined
The 2 foot low voltages of low → U14, due to 3 foot reference voltage U_SET it is constant → the 6 foot voltages of U14 increase, driver point voltages
Raising → output voltage increases.
The process of output current constant current in the present embodiment:When the 3 foot voltages that output current is more than setting electric current → U13 are higher than
The 1 foot output level of 2 foot reference voltage I_SET → U13, Q6 conductings, driver point voltages reduction → output voltage reduction → defeated
Go out current reduction to current value is arranged.
As shown in fig. 6, the MCU control display units include MCU control module, voltage and current benchmark setup module is shown
Show that module and alarm module, the voltage and current benchmark setup module receive user's operation, receives MCU control module write-in
Voltage and current reference information, and the voltage and current reference information of write-in is sent to by linear voltage stabilization constant current list by DA converting units
Member;The MCU control module receives the voltage and current signal that feedback of voltage and current unit is sent by AD conversion unit, and leads to
Display module is crossed show or alarm by alarm module;Detection user remembers voltage and current the behaviour of setup module
Make, obtains Current Voltage a reference value and voltage and current benchmark setup module is written;Display module receives MCU control module and sends out
Display information and shown;Alarm module receives the alarm that MCU control module is sent out and newly reports and alarm.This kind of MCU
Control display unit had both included the MCU control module for being substantially carried out analysis and Control, further included voltage and current benchmark setup module, was used
Family can carry out the reference value of voltage and current by voltage and current benchmark setup module, and user is facilitated to carry out control operation.It should
MCU control display units further include display module and alarm module, and display module can show the Current Voltage letter that MCU is received
Breath, the working condition of the voltage-stabilizing constant-source is grasped convenient for user, user is also convenient for and carries out control operation.Alarm module can
To be monitored by predetermined threshold value, alarm signal is sent out when detected value is more than threshold value, for reminding user, to use
Person makes subsequent operation.
The voltage and current benchmark setup module includes key circuit and shift register, and the key circuit receives user
Operation, MCU control module detects key circuit and obtains Current Voltage a reference value input by user, and Current Voltage a reference value is write
Enter shift register.User operates on key circuit, and MCU control module detects to obtain Current Voltage base input by user
Voltage and current a reference value is sent to by quasi- value write-in shift register, the voltage and current benchmark setup module by DA converting units
Linear voltage stabilization constant current unit realizes voltage and current adjustment.In one embodiment of the present of invention, K1~K15 key circuits are set, are
MCU receives the operational order of Human-to-Machine, and responds operational order.Using four pieces of 74HC595D chips (i.e. U1, U3, U5, U7)
As 8 SI PO shift registers.U1, U3, U5, U7 connect, by the way that tri- ends CK_595, CE_595, DA_595 are arranged
Mouth is connect with MCU respectively, to realize write operations of the MCU to U1, U3, U5, U7.U1, U3 export Id_0~Id11 totally 12 parallel-by-bits
Current data is set, and U5, U7 export Ud_0~Ud11 totally 12 parallel-by-bits setting voltage datas.U18 is also set up in the present embodiment
(24C04) is memory, and power down will not lose data, it is primarily to setting data and user of the storage power supply before manufacture
Setting data, also 31 voltage reference point datas and 51 current reference point datas.
The display module includes LED display, LED screen driving chip, indicator light and drive circuit of indicator.It is described
LED display and LED screen driving chip are substantially carried out LED screen and show, can show voltage and current value;The indicator light and refer to
Show that lamp drive circuit is substantially carried out bright light and shows, the state of a control of the instruction each unit that flickers of indicator light can be used.
The alarm module includes buzzer and buzzer drive circuit, receives the alarm signal that MCU control unit is sent out
After can beep to warn.
As shown in Figure 7 to 9, further include welding stage supply control unit and heat gun supply control unit, the welding stage confession
Electric control unit is connect with power supply unit, receives the power supply of power supply unit, and the welding stage supply control unit is shown with MCU controls
Unit connects, and receives the control of MCU control display units;The heat gun supply control unit is connect with power supply unit, is received
The power supply of power supply unit, the heat gun supply control unit are connect with MCU control display units, and it is single to receive MCU control displays
The control of member.A kind of voltage-stabilizing constant-source disclosed by the invention further includes welding stage supply control unit and heat gun power supply control
Unit integrates welding stage and heat gun, is a kind of three-in-one power supply, welding stage is also provided while can provide voltage-stabilizing constant-source
With the control and power supply of heat gun, current three-in-one power supply is used for simple consideration, the power supply of power unit is designed
Transformer carries out power change, but a kind of three-in-one power supply disclosed by the invention, combines adjustment to manage using trailing type Switching Power Supply
Pressure-stabilizing constant flow solves the weakness that conventional linear power supply can only rely on transformer-supplied, has fuselage light, and low energy consumption, easily transports,
It generates heat small, not easily damaged, the low advantage of failure rate.In one embodiment of the present of invention, the welding stage supply control unit is as schemed
Shown in 10, Q1 is welding stage computer heating control power tube in the present embodiment.CON1 is connected to the output seat of welding stage."S_LT-","S_LT
+ " be welding stage temperature detection sensor positive and negative anodes, " LT_SLEEP " is welding stage suspend mode viberating detection switch, is input to MCU controls
The 17th feet of MCU of display unit." LT_CON " is welding stage computer heating control port, the 18th feet of MCU by MCU control display units.
In one embodiment of the present of invention, the heat gun supply control unit is as shown in FIG. 11 and 12, and ± 12V is supplied in the present embodiment
Electricity ,+39 power supplies go to display, control panel, and+39V powers to hot wind Fans simultaneously.J1 is connected to hot wind platform output seat.FAN_
The 29th feet of MCU of PWN connection MCU control display units are the PWM pulse width signals for the 1KHZ for controlling air force, are put by Q3
Greatly, Q2 base stages, Q2 emitters output 14V~28V/0.25A is given to supply electricity to hot wind platform breeze fan after R13, C8 filtering.FS is wind
The rotational speed pulse signal that machine is fed back is connected to the 27th feet of MCU of MCU control display units, is detected when in the work of hot wind platform
Less than correct rotation speed of fan pulse, calm protective program will be started.S_HT+, S_HT- are hot wind platform temperature detection sensors
Positive and negative anodes.The 30th feet of MCU of tongue tube and MCU control display units in CK_KEY connection hot wind platform handles, when hot wind platform hand
When handle is placed on handle frame, due to there is magnet tongue tube can be made to be closed inside handle frame, the MCU of MCU control display units
30 feet are low level, start the cooling of hot wind platform, suspend mode program.CON2 is 3.96 terminals, is connected to 2,3 feet of hot wind platform output seat
It powers to hot wind platform heating wire, the 23rd feet of MCU of JK-OFF connection MCU control display units are when hot wind platform dormant state
Low level, Q15 cut-offs, JK1 dead electricity trippings, heating wire power-off, it is ensured that safe to use.HOT-CON connection MCU control display units
The 24th feet of MCU, when hot wind platform heating work, export PID programmed algorithm pulse signals, amplify through Q6, U7 light-coupled isolations drive
The silicon-controlled switchings of dynamic U6, control hot wind platform temperature are constant in setting temperature.
As shown in figure 13, further include USB power supply units, shown USB power supply units connect in power amplification power output unit
It connects, work(can be carried out to the equipment with USB interface by being changed to obtain the electric energy for meeting USB supply standards by the electric energy of output
Can, realize the multi-functional power supply of this kind of voltage-stabilizing constant-source.
This kind of voltage-stabilizing constant-source further includes heat-sink unit, control pair of the heat-sink unit by MCU control display units
The electric power incoming line radiates.Heat-sink unit described in one embodiment of the present of invention is as shown in figure 14, and J3 inserts 12V and dissipates in the present embodiment
Air-heater.T_FCON is the control signal that cooling fan opens and closes, and is connected to the 22nd feet of MCU of MCU control display units.
RT1 is thermistor, is mounted on mainboard D13 high-frequency rectification pipes position, and the high frequency high current of detection 30V/5A main power sources power supply is whole
The radiator temperature of flow tube.The ports TEMP are connected to 3 feet of MCU, when 30V/5A main power sources big load operation for a long time, MCU
When the 3rd feet of MCU of control display unit detect that the radiator temperature of high frequency high current rectifying tube rises to 75 DEG C, T_FCON becomes
Start at high level control cooling fan.When temperature rise is to 95 DEG C, the 16th feet of MCU of MCU control display units become high electricity
Driver signals are moved to ground, close the output of 30V/5A power supplys and alarm by the Q3 conductings of flat control display board.At a temperature of
When dropping to 65 DEG C, T_FCON becomes the closing of low level control cooling fan.J4 be mainboard to display board connecting line to display board
Power supply and the control of connection display board and mainboard detect signal.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of voltage-stabilizing constant-source, including MCU control display units, power supply unit and power amplification power output unit,
It is characterized in that, the MCU control display units are followed by DA converting units, linear voltage stabilization constant current unit and power tube tube voltage drop
Control unit is connect with power amplification power output unit, and the linear voltage stabilization constant current unit connects with feedback of voltage and current unit
It connects, the power amplification power output unit passes through feedback of voltage and current unit and AD conversion unit and MCU control display units
Connection, the feedback of voltage and current unit are also connect with linear voltage stabilization constant current unit;The linear voltage stabilization constant current unit receives DA
The feedback signal that the control signal and feedback of voltage and current unit of converting unit forwarding are sent, and power driving signal is sent out to work(
Rate pipe tube voltage drop model- following control unit;The power tube tube voltage drop model- following control unit receives the electric energy and line of power supply unit transmission
The power driving signal that property pressure-stabilizing constant flow unit is sent out, and the electric energy of pressure-stabilizing constant flow is sent out to power amplification power output unit.
2. a kind of voltage-stabilizing constant-source according to claim 1, which is characterized in that the power supply unit includes alternating current input
Module and switch power module, the alternating current input module are electrically connected with city, carry out rectifying and wave-filtering to the alternating current of receiving, and will place
Electric energy after reason is sent to switch power module;The input terminal of the switch power module connects with the output end of alternating current input module
It connects, the output end of the switch power module is connect with the test side of power tube tube voltage drop model- following control unit, the switch electricity
The feedback end of source module is connect with the feedback end of power tube tube voltage drop model- following control unit.
3. a kind of voltage-stabilizing constant-source according to claim 2, which is characterized in that the power tube tube voltage drop model- following control
Unit include the 8th optocoupler, the 43rd to the 47th resistance, the tenth to 13 triodes, the 37th capacitance, the 30th
Eight capacitances and the 7th connection terminal;The test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance and
The diode cathodes of eight optocouplers connects, the test side of the power tube tube voltage drop model- following control unit by the 43rd resistance and
44th resistance is connect with the diode cathode of the 8th optocoupler;The diode cathode of 8th optocoupler also with the 11st pole
The emitter of pipe connects, the transistor collector of the 8th optocoupler by the 37th capacity earth, the 8th optocoupler
Transistor emitter is grounded;The transistor collector of the feedback end and the 8th optocoupler of the power tube tube voltage drop model- following control unit
Connection;The grounded collector of 11st triode, the base stage of the 11st triode by the 38th capacity earth,
The base stage of 11st triode is also connect by the 45th resistance with the 7th connection terminal;7th connection terminal is also
Pass through the 46th resistance eutral grounding;Tenth triode, the 12nd triode and the 13rd triode common collector and work(
The test side of rate pipe tube voltage drop model- following control unit connects, and the emitter of the tenth triode is connect with the 7th connection terminal,
The base stage of tenth triode is connect with the emitter of the 12nd triode, the base stage and the 13rd of the 12nd triode
The emitter of triode connects, and the base stage of the 13rd triode is connect by the 47th resistance with emitter, and described the
The base stage of 13 triodes is connect as the control terminal of power tube tube voltage drop model- following control unit with linear voltage stabilization constant current unit.
4. a kind of voltage-stabilizing constant-source according to claim 3, which is characterized in that the 47th resistance is zero Europe electricity
Resistance.
5. a kind of voltage-stabilizing constant-source according to claim 2, which is characterized in that the power tube tube voltage drop model- following control
Unit includes the 8th optocoupler, the 43rd to the 47th resistance, the 11st to 13 triodes, the 37th capacitance, third
18 capacitances and the 7th connection terminal;The test side of the power tube tube voltage drop model- following control unit by the 43rd resistance with
The diode cathode of 8th optocoupler connects, and the test side of the power tube tube voltage drop model- following control unit passes through the 43rd resistance
It is connect with the 44th resistance with the diode cathode of the 8th optocoupler;The diode cathode of 8th optocoupler is also with the 11st
The emitter of pole pipe connects, and the transistor collector of the 8th optocoupler passes through the 37th capacity earth, the 8th optocoupler
Transistor emitter ground connection;The triode current collection of the feedback end and the 8th optocoupler of the power tube tube voltage drop model- following control unit
Pole connects;The base stage of the grounded collector of 11st triode, the 11st triode is connect by the 38th capacitance
The base stage on ground, the 11st triode is also connect by the 45th resistance with the 7th connection terminal;7th connecting pin
Son also passes through the 46th resistance eutral grounding;12nd triode and the 13rd triode common collector with power tube pipe pressure
The test side connection of model- following control unit is dropped, and the emitter of the 12nd triode connect with the 7th connection terminal, and described the
The base stage of 12 triodes is connect with the emitter of the 13rd triode, the base stage of the 13rd triode and the 47th electricity
Resistance connection, control terminal and linear voltage stabilization constant current unit of the 47th resistance as power tube tube voltage drop model- following control unit
Connection.
6. a kind of voltage-stabilizing constant-source according to claim 2, which is characterized in that the linear voltage stabilization constant current unit includes
Voltage Feedback processing module, voltage compare adjustment module, current feedback processing module, and electric current compares adjustment module and power drives
Signal generation module,
The Voltage Feedback processing module, the voltage feedback signal of feedback of voltage and current unit feedback, and the voltage to receiving
Feedback signal is decayed to obtain output voltage signal, and output voltage signal is sent to the comparison that voltage compares adjustment module
End;
The voltage compares adjustment module, compares the output voltage signal that termination is sent by Voltage Feedback processing module, reference edge
Receive the voltage reference signal that MCU control display units are sent by DA converting units, output end is generated with power driving signal
The first input end of module connects, and output end output voltage adjusts signal;
The current feedback processing module, the current feedback signal of feedback of voltage and current unit feedback, and the electricity received is stayed
Feedback signal is amplified to obtain output current signal, and output current signal is sent to the comparison that electric current compares adjustment module
End;
The electric current compares adjustment module, compares the output current signal that termination is sent by current feedback processing module, reference edge
Receive the current reference signal that MCU control display units are sent by DA converting units, output end is generated with power driving signal
The first input end of module connects, and output end output current adjusts signal;
The power driving signal generation module receives voltage and compares the voltage adjustment signal and electric current ratio that adjustment module is sent
Compared with the current modifying signal that adjustment module is sent, obtains power driving signal and be sent to power tube tube voltage drop model- following control list
Member.
7. according to a kind of voltage-stabilizing constant-source of claim 1-6 any one of them, which is characterized in that the MCU controls display
Unit includes MCU control module, voltage and current benchmark setup module, display module and alarm module, the voltage and current benchmark
Setup module receives user's operation, receives the voltage and current reference information of MCU control module write-in, and passes through DA converting units
The voltage and current reference information of write-in is sent to linear voltage stabilization constant current unit;
The MCU control module receives the voltage and current signal that feedback of voltage and current unit is sent by AD conversion unit, and leads to
Display module is crossed show or alarm by alarm module;Detection user remembers voltage and current the behaviour of setup module
Make, obtains Current Voltage a reference value and voltage and current benchmark setup module is written;
Display module receives the display information that MCU control module is sent out and is shown;
Alarm module receives the alarm that MCU control module is sent out and newly reports and alarm.
8. a kind of voltage-stabilizing constant-source according to claim 7, which is characterized in that the voltage and current benchmark setup module
Including key circuit and shift register, the key circuit receives user's operation, and MCU control module detects key circuit and obtains
Current Voltage a reference value input by user, and shift register is written into Current Voltage a reference value.
9. according to claim 1-6 or a kind of voltage-stabilizing constant-source of 8 any one of them, which is characterized in that further include that welding stage supplies
Electric control unit and heat gun supply control unit, the welding stage supply control unit are connect with power supply unit, receive power supply list
The power supply of member, the welding stage supply control unit are connect with MCU control display units, receive the control of MCU control display units;
The heat gun supply control unit is connect with power supply unit, receives the power supply of power supply unit, the heat gun power supply control list
Member is connect with MCU control display units, receives the control of MCU control display units.
10. a kind of voltage-stabilizing constant-source according to claim 7, which is characterized in that further include welding stage supply control unit
With heat gun supply control unit, the welding stage supply control unit is connect with power supply unit, receives the power supply of power supply unit, institute
It states welding stage supply control unit to connect with MCU control display units, receives the control of MCU control display units;The heat gun
Supply control unit is connect with power supply unit, receives the power supply of power supply unit, and the heat gun supply control unit is controlled with MCU
Display unit connects, and receives the control of MCU control display units.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810757667.4A CN108693908A (en) | 2018-07-11 | 2018-07-11 | A kind of voltage-stabilizing constant-source |
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| CN201810757667.4A CN108693908A (en) | 2018-07-11 | 2018-07-11 | A kind of voltage-stabilizing constant-source |
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