CN106301023A - The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits - Google Patents
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits Download PDFInfo
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- CN106301023A CN106301023A CN201610738747.6A CN201610738747A CN106301023A CN 106301023 A CN106301023 A CN 106301023A CN 201610738747 A CN201610738747 A CN 201610738747A CN 106301023 A CN106301023 A CN 106301023A
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- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses the skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits, it is characterized in that, main by control chip U2, diode rectifier U1, transformator T1, transformator T2, audion VT1, resistance R4, it is serially connected in the ICLC between the cathode output end of diode rectifier U1 and the VCC pin of control chip U2, respectively with the COMP pin of control chip U2, VFB pin, the pulse width regulating circuit that VREF pin is connected with RC pin, it is serially connected in the current detection circuit between control chip U2 and transformator T2, and the composition such as the comparison amplifying circuit being serially connected between pulse width regulating circuit and current detection circuit.The present invention is reasonable in design, and overall structure is simple, and using effect is good, can well guarantee the stability of anode electrolytic cell current measuring device, it is thus possible to ensure the accuracy of measurement result.
Description
Technical field
The present invention relates to a kind of power supply, specifically, be that a kind of anode electrolytic cell current measuring device surge limits
The skew controllable electric power of system.
Background technology
Aluminium electroloysis industry at home typically requires in prebaked cell production process the distribution to anode current survey
Amount, traditional anode current measurement apparatus is the manual measurement method using the equidistant voltage drop of off-line, due to the equidistant voltage of off-line
The manual measurement method of fall can only measure an anode every time, carries out the measurement of next anode, this measurement side after having operated again
The process of measurement of method is complicated, workload big, and the time of measuring is long, causes measurement result to there is time difference, it is impossible to truly to reflect
The distribution situation of anode electrolytic cell electric current.Along with the development of aluminium electroloysis industry, anode current measurement apparatus is also entered by people
Gone improvement, i.e. the side at the clamping plate of the bus for fixing jointed anode bar arranges one or more for the work to bus
Carry out the probe of the automatically retractable detected as electric current, this probe is connected with signal picker by the way of electrical connection, letter
Number harvester is transferred to the control centre on backstage by signal processing system after then being processed by the information Man of collection, in control
The heart is by just can get the current value of anode electrolytic cell bar after converting the information received.And this anode electrolytic cell electric current
Measurement apparatus operationally needs a power supply that can export stable voltage and current to be its power supply, to guarantee anode electrolytic cell
The stability of current measuring device.
But, there is the stability of output voltage and electric current in the power supply of existing anode electrolytic cell current measuring device
, there is instability in poor problem when causing anode electrolytic cell current measuring device to work, so that measurement result accuracy
Not high enough.Therefore it provides the anode electrolytic cell current measuring device power supply that a kind of energy exports stable voltage and current is
The task of top priority.
Summary of the invention
It is an object of the invention to overcome the power supply of existing anode electrolytic cell current measuring device to there is output electricity
Pressure and the defect of poor stability of electric current, it is provided that the skew that limits of a kind of anode electrolytic cell current measuring device surge controlled
Power supply.
To achieve these goals, the scheme that the present invention uses is as follows: a kind of anode electrolytic cell current measuring device wave
Gush the skew controllable electric power of restriction, mainly by control chip U2, diode rectifier U1, transformator T1, transformator T2, audion
VT1, positive pole cathode output end with diode rectifier U1 after resistance R1 is connected, N pole after resistance R19 with transformator T2
The Zener diode D3 that the Same Name of Ends of former limit inductance coil L3 is connected, positive pole is connected with the emitter stage of audion VT1, negative pole
Polar capacitor C1, the N pole of ground connection is connected with the Same Name of Ends of the former limit inductance coil L1 of transformator T2, P pole after resistance R2 with
The diode D2 that the base stage of audion VT1 is connected, one end is connected with the P pole of diode D2, the other end and audion VT1
The adjustable resistance R3 that colelctor electrode is connected, negative pole is connected with the P pole of diode D2, the former limit inductor wire of positive pole and transformator T2
Polar capacitor C2, the P pole that is connected of non-same polarity of circle L1 is connected with the Same Name of Ends of the secondary inductance coil L2 of transformator T2,
The non-same polarity of the secondary inductance coil L2 of N pole and transformator T2 is collectively forming the diode D1 of the outfan of transformator T2, just
The polarity that pole is connected with the N pole of diode D1, negative pole is connected with the non-same polarity of the L2 of inductance coil respectively of transformator T2
Electric capacity C3, one end is connected with the N pole of diode D1, the other end is connected with the Same Name of Ends of the secondary inductance coil L2 of transformator T2
The resistance R4 connect, the surge being serially connected between the cathode output end of diode rectifier U1 and the VCC pin of control chip U2 electricity
Stream limiting circuit, the pulsewidth being connected with COMP pin, VFB pin, VREF pin and the RC pin of control chip U2 respectively is adjusted
Whole circuit, is serially connected in the current detection circuit between control chip U2 and transformator T2, and be serially connected in pulse width regulating circuit with
Comparison amplifying circuit composition between current detection circuit.
The non-same polarity of the secondary inductance coil of described transformator T1 and one of them input of diode rectifier U1
Be connected, the Same Name of Ends of its secondary inductance coil is then connected with another input of diode rectifier U1；Described voltage stabilizing
The N pole of diode D3 is also connected with the VCC pin of control chip U2；The colelctor electrode of described audion VT1 also with transformator T2
The non-same polarity of former limit inductance coil L1 be connected, its emitter stage then cathode output end with diode rectifier U1 is connected
Connect；The GND pin ground connection of described control chip U2, its COMP pin are connected with VCC pin.
Further, described ICLC is by amplifier P1, amplifier P2, audion VT9, audion
VT10, positive pole positive pole with amplifier P2 after resistance R32 is connected, the cathode output end phase of negative pole and diode rectifier U1
The polar capacitor C22 connected, one end is connected with the positive pole of polar capacitor C22, the resistance R34 of other end ground connection, and negative pole is through electricity
Be connected with the emitter stage of audion VT9 after resistance R28, the polar capacitor C19 of plus earth, one end and polar capacitor C19's is negative
Pole is connected, resistance R30, the P pole of other end ground connection positive pole with polar capacitor C19 after resistance R29 is connected, N pole is through can
Adjusting the diode D13 of ground connection after resistance R35, negative pole is connected with the negative pole of amplifier P1, positive pole and the positive pole phase of amplifier P2
Polar capacitor C21, the N pole connected is connected with the base stage of audion VT10, P pole is connected with the outfan of amplifier P2 two
Pole pipe D15, positive pole is connected with the outfan of amplifier P1, negative pole emitter stage with audion VT10 after resistance R33 is connected
The polar capacitor C20 connect, positive pole colelctor electrode with audion VT9 after resistance R31 is connected, the polar capacitor of minus earth
C24, positive pole negative pole with amplifier P2 after resistance R36 is connected, negative pole after resistance R37 with the negative pole of polar capacitor C24
The polar capacitor C23 being connected, and N pole is connected with the emitter stage of audion VT9, P pole after resistance R38 with polar capacitor
The Zener diode D14 composition that the negative pole of C24 is connected；The negative pole of described amplifier P2 and the adjustable side phase of adjustable resistance R35
Connect；The positive pole of described amplifier P1 is connected with the adjustable side of adjustable resistance R30, its outfan also with the base of audion VT9
Pole is connected；The grounded collector of described audion VT10；The emitter stage of described audion VT9 also with the VCC of control chip U2
Pin is connected.
The described amplifying circuit that compares is by audion VT6, audion VT7, audion VT8, field effect transistor MOS2, P pole and three
The diode D9 that colelctor electrode is connected, N pole is connected with pulse width regulating circuit of pole pipe VT6, positive pole after inductance L5 with three poles
Polar capacitor C13, the P pole that the colelctor electrode of pipe VT6 is connected, negative pole colelctor electrode with audion VT7 after resistance R22 is connected
After resistance R20 the negative pole with polar capacitor C13 be connected, the diode D10 of N pole ground connection, the P pole of positive pole and diode D10
Be connected, the polar capacitor C14 of minus earth, positive pole is connected with the base stage of audion VT6, negative pole after resistance R23 with three
The polar capacitor C15 that the base stage of pole pipe VT7 is connected, positive pole emitter stage with audion VT6 after resistance R24 is connected, negative
Pole be connected with the base stage of audion VT8 after polar capacitor C16, the P pole of ground connection after resistance R21 with polar capacitor C13 just
The diode D11 that pole is connected, N pole is connected with the colelctor electrode of audion VT8, positive pole is connected with the colelctor electrode of audion VT8
Connect, polar capacitor C17, P pole that negative pole is connected with the grid of field effect transistor MOS2 after resistance R25 and field effect transistor MOS2
The diode D12 that source electrode is connected, N pole is sequentially connected through transistor VL emitter stage with audion VT8 after resistance R27,
The adjustable electric that one end is connected with the negative pole of polar capacitor C17, the other end is connected with the junction point of transistor VL with resistance R27
Resistance R26, and the pole of ground connection after positive pole is connected with the drain electrode of field effect transistor MOS2, negative pole is connected with the N pole of diode D12
Property electric capacity C18 composition；The described emitter stage of audion VT7 be connected with the drain electrode of field effect transistor MOS2 after ground connection；Described three poles
The grounded emitter of pipe VT8；The drain electrode of described field effect transistor MOS2 is also connected with current detection circuit.
Described pulse width regulating circuit by audion VT2, audion VT3, positive pole after resistance R5 with the current collection of audion VT2
The colelctor electrode of the polar capacitor C4 that pole is connected, negative pole is connected with the COMP pin of control chip U2, one end and audion VT2
Be connected, inductance L4 that the other end is connected with the negative pole of polar capacitor C4, one end is connected with the base stage of audion VT2, separately
Resistance R7, the P pole that one end is connected with the COMP pin of control chip U2 is connected with the positive pole of polar capacitor C4, N pole sequentially
Through the diode D4 that resistance R6 emitter stage with audion VT2 after resistance R8 is connected, the emitter stage of positive pole and audion VT2
Be connected, polar capacitor C5, P pole that negative pole is connected with the VFB pin of control chip U2 is connected with the emitter stage of audion VT2
Connect, diode D5 that N pole is connected with the base stage of audion VT3, positive pole is connected with the junction point of resistance R6 with resistance R8, negative
The polar capacitor C6 that pole colelctor electrode with audion VT3 after resistance R9 is connected, and the VREF of one end and control chip U2
The resistance R10 composition that pin is connected, the other end is connected with the emitter stage of audion VT3；The negative pole of described polar capacitor C6
Ground connection；The emitter stage of described audion VT3 is connected with the R pin of control chip U2 and the N pole of diode D9 the most respectively.
Described current detection circuit is by field effect transistor MOS1, audion VT4, audion VT5, negative pole and field effect transistor MOS1
Polar capacitor C10, the P pole that grid is connected, positive pole is connected with the GD pin of control chip U2 after resistance R14 and polarity
The diode D7 that the positive pole of electric capacity C10 is connected, N pole is connected with the colelctor electrode of audion VT4, one end is with control chip U2's
The resistance R12 that IS pin is connected, the other end is connected with the emitter stage of audion VT4, the base stage phase of positive pole and audion VT4
Connect, polar capacitor C7, the N pole that is connected with the drain electrode of field effect transistor MOS2 of negative pole after resistance R15 with field effect transistor MOS1
The diode D6 that source electrode is connected, P pole negative pole with polar capacitor C7 after resistance R11 is connected, positive pole is after resistance R13
Be connected with the colelctor electrode of audion VT4, polar capacitor C8, P pole that negative pole is connected with the base stage of audion VT5 is through resistance
Two poles that after R18, the drain electrode with field effect transistor MOS1 is connected, N pole emitter stage with audion VT5 after resistance R16 is connected
Pipe D8, negative pole is connected with the colelctor electrode of audion VT5 after resistance R17, the former limit inductance coil L3 of positive pole and transformator T2
The polar capacitor C11 that is connected of Same Name of Ends, after negative pole is connected with the non-same polarity of the former limit inductance coil L3 of transformator T2
The polar capacitor C9 that ground connection, positive pole are connected with the colelctor electrode of audion VT5, and the former limit inductor wire of negative pole and transformator T2
The polar capacitor that non-same polarity is connected, positive pole is connected with the non-same polarity of the secondary inductance coil L2 of transformator T2 of circle L3
C12 forms；The P pole of described diode D6 also colelctor electrode with audion VT5 be connected after ground connection；Described field effect transistor MOS1
Drain electrode also Same Name of Ends with the former limit inductance coil L1 of transformator T2 is connected.
For the practical effect of the present invention, described control chip U2 the most preferentially have employed the integrated chip of UC384X and comes real
Existing.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention is reasonable in design, and overall structure is simple, and using effect is good, can well guarantee anode electrolytic cell electric current
The stability of measurement apparatus, it is thus possible to ensure the accuracy of measurement result.
(2) present invention can change the pulse width of voltage to control the fluctuation of output voltage, can effectively improve voltage
Dynamic property；And the low-order harmonic that the present invention can effectively suppress or eliminate in voltage, can account for Voltage Feedback simultaneously
Empty ratio is adjusted, and ensures that the present invention can export stable voltage and current, effectively raises anode electrolytic cell electricity
The stability of flow measuring apparatus, it is thus possible to ensure the accuracy of measurement result.
(3) high surge current that input power produces when powering up can be suppressed by the present invention, can effectively will exceed
In the range of the transient overvoltage of normal working voltage is adjusted to allow, thus improve the steady of output voltage of the present invention and electric current
Qualitative, it is thus possible to ensure the accuracy of measurement result.
(4) resistance to pressure of voltage and dynamic range can be adjusted by the present invention, and can be by inclined for the middle zero point of electric current
Shifting controls within 0.2nA, ensures that the stability of the voltage and current that the present invention exports.
(5) the control chip U2 of the present invention the most preferentially have employed the integrated chip of UC384X and realizes, this chip and periphery electricity
Road combines, and can effectively improve stability and the reliability of the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the comparison amplifying circuit of the present invention.
Fig. 3 is the electrical block diagram of the ICLC 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 embodiments of the present invention are not
It is limited to this.
Embodiment
During enforcement, the present invention is mainly by control chip U2, diode rectifier U1 transformator T1, transformator T2, audion
VT1, resistance R1, resistance R2, adjustable resistance R3, resistance R4, resistance R19, polar capacitor C1, polar capacitor C2, polar capacitor C3,
Diode D1, diode D2, Zener diode D3, ICLC, compare amplifying circuit, pulse width regulating circuit, with
And current detection circuit composition.
During connection, the positive pole of Zener diode D3 cathode output end with diode rectifier U1 after resistance R1 is connected
Connecing, N pole Same Name of Ends of limit inductance coil L3 former with transformator T2 after resistance R19 is connected.The positive pole of polar capacitor C1 and three
The emitter stage of pole pipe VT1 is connected, minus earth.The N pole of diode D2 is of the same name with the former limit inductance coil L1's of transformator T2
End is connected, and P pole base stage with audion VT1 after resistance R2 is connected.One end of adjustable resistance R3 and the P pole of diode D2
Being connected, the other end is connected with the colelctor electrode of audion VT1.The negative pole of polar capacitor C2 is connected with the P pole of diode D2,
Positive pole is connected with the non-same polarity of the former limit inductance coil L1 of transformator T2.The P pole of diode D1 and the secondary of transformator T2
The Same Name of Ends of inductance coil L2 is connected, and N pole is collectively forming transformation with the non-same polarity of the secondary inductance coil L2 of transformator T2
The outfan of device T2.The positive pole of polar capacitor C3 is connected with the N pole of diode D1, negative pole and the difference inductor wire of transformator T2
The non-same polarity of circle L2 is connected.One end of resistance R4 is connected with the N pole of diode D1, the other end and the secondary of transformator T2
The Same Name of Ends of inductance coil L2 is connected.ICLC is serially connected in cathode output end and the control of diode rectifier U1
Between the VCC pin of coremaking sheet U2.Pulse width regulating circuit respectively with the COMP pin of control chip U2, VFB pin, VREF pin
It is connected with RC pin.Current detection circuit is serially connected between control chip U2 and transformator T2.Relatively amplifying circuit is serially connected in
Between pulse width regulating circuit and current detection circuit.
The non-same polarity of the secondary inductance coil of described transformator T1 and one of them input of diode rectifier U1
Being connected, the Same Name of Ends of its secondary inductance coil is then connected with another input of diode rectifier U1；Described voltage stabilizing
The N pole of diode D3 is also connected with the VCC pin of control chip U2；The colelctor electrode of described audion VT1 also with transformator T2
The non-same polarity of former limit inductance coil L1 be connected, its emitter stage then cathode output end with diode rectifier U1 is connected
Connect；The GND pin ground connection of described control chip U2, its COMP pin is connected with VCC pin.
During enforcement, defeated as the present invention of the Same Name of Ends of the transformator T1 former limit inductance coil L1 of the present invention and non-same polarity
Entering end and be electrically connected with civil power, this transformator T1 then carries out blood pressure lowering process, the voltage after blood pressure lowering process to the civil power inputted
Being converted to 12V DC voltage after diode rectifier U1 carries out rectification, this voltage is the reference voltage of the present invention.And the present invention
In audion VT1, resistance R2, adjustable resistance R3, polar capacitor C1, polar capacitor C2 and diode D2 define micro-process
Device, this microprocessor can eliminate the harmonic wave in the 12V reference voltage after rectification, makes this reference voltage cleaner, thus effectively
Ensure that the present invention can export stable voltage and current.Wherein, the outfan of described transformator T2 then with anode electrolytic cell
The electrical interface that enters of current measuring device is connected, and powers for anode electrolytic cell current measuring device.The control chip of the present invention
U2 the most preferentially have employed the integrated chip of UC384X and realizes, and this chip combines with peripheral circuit, can effectively improve the present invention
Stability and reliability.
Further, described pulse width regulating circuit by audion VT2, audion VT3, resistance R5, resistance R6, resistance R7,
Resistance R8, resistance R9, resistance R10, polar capacitor C4, polar capacitor C5, polar capacitor C6, inductance L4, diode D4, and two
Pole pipe D5 forms.
During connection, the positive pole of polar capacitor C4 colelctor electrode with audion VT2 after resistance R5 is connected, negative pole and control
The COMP pin of chip U2 is connected.One end of inductance L4 is connected with the colelctor electrode of audion VT2, the other end and polar capacitor
The negative pole of C4 is connected.One end of resistance R7 is connected with the base stage of audion VT2, the COMP pipe of the other end and control chip U2
Foot is connected.The P pole of diode D4 is connected with the positive pole of polar capacitor C4, N pole sequentially after resistance R6 and resistance R8 with three
The emitter stage of pole pipe VT2 is connected.
Wherein, the positive pole of polar capacitor C5 is connected with the emitter stage of audion VT2, negative pole and the VFB of control chip U2
Pin is connected.The P pole of diode D5 is connected with the emitter stage of audion VT2, and N pole is connected with the base stage of audion VT3.
The positive pole of polar capacitor C6 is connected with the junction point of resistance R6 with resistance R8, negative pole after resistance R9 with the collection of audion VT3
Electrode is connected.One end of resistance R10 is connected with the VREF pin of control chip U2, the other end and the transmitting of audion VT3
Pole is connected.The minus earth of described polar capacitor C6；The emitter stage of described audion VT3 the most respectively with the R of control chip U2
Pin is connected with the N pole of diode D9.
Further, described current detection circuit is by field effect transistor MOS1, audion VT4, audion VT5, resistance
R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, polar capacitor C7, polarity electricity
Hold C8, polar capacitor C9, polar capacitor C10, polar capacitor C11, polar capacitor C12, diode D6, diode D7, and two
Pole pipe D8 forms.
During connection, the negative pole of polar capacitor C10 is connected with the grid of field effect transistor MOS1, positive pole after resistance R14 with
The GD pin of control chip U2 is connected.The P pole of diode D7 is connected with the positive pole of polar capacitor C10, N pole and audion
The colelctor electrode of VT4 is connected.One end of resistance R12 is connected with the IS pin of control chip U2, and the other end is with audion VT4's
Emitter stage is connected.The positive pole of polar capacitor C7 is connected with the base stage of audion VT4, negative pole and the drain electrode of field effect transistor MOS2
It is connected.
Wherein, the N pole of diode D6 source electrode with field effect transistor MOS1 after resistance R15 is connected, and P pole is through resistance R11
Negative pole with polar capacitor C7 is connected afterwards.The positive pole of polar capacitor C8 colelctor electrode with audion VT4 after resistance R13 is connected
Connecing, negative pole is connected with the base stage of audion VT5.The P pole of diode D8 after resistance R18 with the drain electrode phase of field effect transistor MOS1
Connecting, N pole emitter stage with audion VT5 after resistance R16 is connected.The negative pole of polar capacitor C11 after resistance R17 with three
The colelctor electrode of pole pipe VT5 is connected, and positive pole is connected with the Same Name of Ends of the former limit inductance coil L3 of transformator T2.
Meanwhile, the negative pole of polar capacitor C9 is connected with the non-same polarity of the former limit inductance coil L3 of transformator T2 and is followed by
Ground, positive pole is connected with the colelctor electrode of audion VT5.The negative pole of polar capacitor C12 and the former limit inductance coil L3 of transformator T2
Non-same polarity be connected, positive pole is connected with the non-same polarity of the secondary inductance coil L2 of transformator T2.Described diode D6
P pole also colelctor electrode with audion VT5 be connected after ground connection；The drain electrode of described field effect transistor MOS1 also former with transformator T2
The Same Name of Ends of limit inductance coil L1 is connected.
As in figure 2 it is shown, the described amplifying circuit that compares is by audion VT6, audion VT7, audion VT8, field effect transistor
MOS2, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, adjustable resistance R26, resistance R27, polarity
Electric capacity C13, polar capacitor C14, polar capacitor C15, polar capacitor C16, polar capacitor C17, polar capacitor C18, diode D9,
Diode D10, diode D11, inductance L5, and diode D12 form.
During connection, the P pole of diode D9 is connected with the colelctor electrode of audion VT6, and N pole is connected with pulse width regulating circuit
Connect.The positive pole of polar capacitor C13 colelctor electrode with audion VT6 after inductance L5 is connected, negative pole after resistance R22 with three poles
The colelctor electrode of pipe VT7 is connected.The P pole of diode D10 negative pole with polar capacitor C13 after resistance R20 is connected, and N pole connects
Ground.The positive pole of polar capacitor C14 is connected with the P pole of diode D10, minus earth.
Wherein, the positive pole of polar capacitor C15 is connected with the base stage of audion VT6, negative pole after resistance R23 with audion
The base stage of VT7 is connected.The positive pole of polar capacitor C16 emitter stage with audion VT6 after resistance R24 is connected, negative pole with
The base stage of audion VT8 be connected after ground connection.The P pole of diode D11 positive pole with polar capacitor C13 after resistance R21 is connected
Connecing, N pole is connected with the colelctor electrode of audion VT8.The positive pole of polar capacitor C17 is connected with the colelctor electrode of audion VT8, negative
Pole grid with field effect transistor MOS2 after resistance R25 is connected.
Meanwhile, the P pole of diode D12 is connected with the source electrode of field effect transistor MOS2, and N pole is sequentially through transistor VL and resistance
After R27, the emitter stage with audion VT8 is connected.One end of adjustable resistance R26 is connected with the negative pole of polar capacitor C17, separately
One end is connected with the junction point of transistor VL with resistance R27.The drain electrode phase of the positive pole of polar capacitor C18 and field effect transistor MOS2
Connect, negative pole be connected with the N pole of diode D12 after ground connection.The emitter stage of described audion VT7 and the leakage of field effect transistor MOS2
Pole be connected after ground connection；The grounded emitter of described audion VT8；The drain electrode of described field effect transistor MOS2 is also electric with current detecting
Road is connected.
As it is shown on figure 3, described ICLC is by amplifier P1, amplifier P2, audion VT9, audion
VT10, resistance R28, resistance R29, adjustable resistance R30, resistance R31, resistance R32, resistance R33, resistance R34, adjustable resistance R35,
Resistance R36, resistance R37, resistance R38, polar capacitor C19, polar capacitor C20, polar capacitor C21, polar capacitor C22, polarity
Electric capacity C23, polar capacitor C24, diode D13, diode D14, and diode D15 form.
During connection, the positive pole of polar capacitor C22 positive pole with amplifier P2 after resistance R32 is connected, negative pole and two poles
The cathode output end of pipe commutator U1 is connected.One end of resistance R34 is connected with the positive pole of polar capacitor C22, another termination
Ground.The negative pole of polar capacitor C19 emitter stage with audion VT9 after resistance R28 is connected, plus earth.The one of resistance R30
End is connected with the negative pole of polar capacitor C19, other end ground connection.
Wherein, the P pole of diode D13 positive pole with polar capacitor C19 after resistance R29 is connected, and N pole is through adjustable resistance
Ground connection after R35.The negative pole of polar capacitor C21 is connected with the negative pole of amplifier P1, and positive pole is connected with the positive pole of amplifier P2.
The N pole of diode D15 is connected with the base stage of audion VT10, and P pole is connected with the outfan of amplifier P2.Polar capacitor
The positive pole of C20 is connected with the outfan of amplifier P1, and negative pole emitter stage with audion VT10 after resistance R33 is connected.
Meanwhile, the positive pole of polar capacitor C24 colelctor electrode with audion VT9 after resistance R31 is connected, minus earth.
The positive pole of polar capacitor C23 negative pole with amplifier P2 after resistance R36 is connected, negative pole after resistance R37 with polar capacitor
The negative pole of C24 is connected.The N pole of Zener diode D14 is connected with the emitter stage of audion VT9, P pole after resistance R38 with
The negative pole of polar capacitor C24 is connected.
The negative pole of described amplifier P2 is connected with the adjustable side of adjustable resistance R35；The positive pole of described amplifier P1 with can
The adjustable side adjusting resistance R30 is connected, and its outfan also base stage with audion VT9 is connected；The collection of described audion VT10
Electrode ground connection；The emitter stage of described audion VT9 is also connected with the VCC pin of control chip U2.
During operation, the control chip U2 that the present invention uses is the integrated chip of UC384X, and the integrated chip of this UC384X is fixing
The integrated chip of the controlled modulation system of operating frequency.The resistance R5 of the pulse width regulating circuit of the present invention, resistance R6, resistance R7, electricity
The external resistor and capacitor component of resistance R8, diode D4, inductance L4 and COMP pin that polar capacitor C4 is control chip U2 is for adjusting
The gain of voltage and frequency characteristic；The polar capacitor C5 of this pulse width regulating circuit, polar capacitor C6, diode D5 and resistance R9 shape
Becoming Voltage Feedback device, and be connected as the VFB pin of feedback voltage input with control chip U2, this Voltage Feedback device exports
The reference voltage of voltage and the error amplifier in-phase end within control chip U2 compare, produce error voltage, control
Pulse width processed, therefore pulse width regulating circuit just can be effectively to voltage after being adjusted the gain of voltage and frequency characteristic
Pulsewidth is adjusted, and makes voltage more steady.Meanwhile, the GD pin of the current detecting regulation electric circuit inspection control chip U2 of the present invention
Voltage make power supply be in discontinuous operation state more than just reducing pulse width during 1V；Effectively reduce the IS pipe of control chip U2
The Leakage Current of foot output electric current and loss current, and the unusual fluctuations of the IS pin output electric current of control chip U2 can be suppressed,
Output electric current is made to keep stable；Voltage after this current detecting regulation circuit will process the most simultaneously is transferred to transformator T2, this
The bipolar transformator that the transformator T2 of invention uses, this transformator T can export 5V～12V galvanic current pressure, it is thus possible to protect
The accuracy of card measurement result.
Wherein, the present invention is arranged between the cathode output end and the VCC pin of control chip U2 of diode rectifier U1
High surge current for producing input power when powering up suppresses, and effectively can will exceed normal working voltage
Transient overvoltage be adjusted to allow in the range of ICLC, the amplifier in this ICLC
P1, adjustable resistance R30 and audion VT9 form the first modulator, and amplifier P2, adjustable resistance R35 and audion VT10 shape
The second modulator become.This first modulator and the second modulator combine peripheral electron element and effectively can add input power
The high surge current produced during electricity suppresses, and overvoltage is adjusted in the range of permission, thus this surge current limits
Circuit can preferably improve the stability of output voltage of the present invention and electric current, it is thus possible to ensure the accuracy of measurement result.
Meanwhile, the present invention can by the comparison amplifying circuit being arranged between pulse width regulating circuit and current detection circuit,
This compares amplifying circuit and can be adjusted the resistance to pressure of voltage and dynamic range, and can be by the middle zero migration control of electric current
System, within 0.2nA, ensures that the stability of the voltage and current that the present invention exports.
Therefore, the present invention is by being adjusted the pulse width of voltage；And the low-order harmonic in voltage is had
The elimination of effect or suppression, can effectively guarantee after the dutycycle to Voltage Feedback is adjusted simultaneously to export stable voltage and electricity
Stream, thus the present invention can effectively improve the stability of anode electrolytic cell current measuring device.Meanwhile, the control chip of the present invention
U2 preferentially have employed the integrated chip of UC384X and realizes, and this chip combines with peripheral circuit, can effectively improve the present invention's
Stability and reliability, it is thus possible to ensure the accuracy of measurement result.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. the skew controllable electric power that an anode electrolytic cell current measuring device limits with surge, it is characterised in that main by controlling
Coremaking sheet U2, diode rectifier U1, transformator T1, transformator T2, audion VT1, positive pole is whole with diode after resistance R1
The cathode output end of stream device U1 is connected, N pole Same Name of Ends of limit inductance coil L3 former with transformator T2 after resistance R19 is connected
Zener diode D3, positive pole is connected with the emitter stage of audion VT1, polar capacitor C1, the N pole of minus earth and transformator
The diode that the Same Name of Ends of the former limit inductance coil L1 of T2 is connected, P pole base stage with audion VT1 after resistance R2 is connected
D2, the adjustable resistance R3 that one end is connected with the P pole of diode D2, the other end is connected with the colelctor electrode of audion VT1, negative pole
Be connected with the P pole of diode D2, polarity that positive pole is connected with the non-same polarity of the former limit inductance coil L1 of transformator T2 electricity
Hold C2, P pole be connected with the Same Name of Ends of the secondary inductance coil L2 of transformator T2, the secondary inductance coil of N pole and transformator T2
The non-same polarity of L2 is collectively forming the diode D1 of the outfan of transformator T2, and positive pole is connected with the N pole of diode D1, negative pole
The polar capacitor C3 being connected with the non-same polarity of the L2 of inductance coil respectively of transformator T2, the N pole phase of one end and diode D1
The resistance R4 that connection, the other end are connected with the Same Name of Ends of the secondary inductance coil L2 of transformator T2, is serially connected in diode rectification
ICLC between cathode output end and the VCC pin of control chip U2 of device U1, respectively with control chip U2
COMP pin, the pulse width regulating circuit that is connected with RC pin of VFB pin, VREF pin, be serially connected in control chip U2 and change
Current detection circuit between depressor T2, and the comparison amplification electricity being serially connected between pulse width regulating circuit and current detection circuit
Road forms；One of them input phase of the non-same polarity of the secondary inductance coil of described transformator T1 and diode rectifier U1
Connect, the Same Name of Ends of its secondary inductance coil is then connected with another input of diode rectifier U1；Described voltage stabilizing two
The N pole of pole pipe D3 is also connected with the VCC pin of control chip U2；The colelctor electrode of described audion VT1 is also with transformator T2's
The non-same polarity of former limit inductance coil L1 is connected, its emitter stage then cathode output end with diode rectifier U1 is connected；
The GND pin ground connection of described control chip U2, its COMP pin are connected with VCC pin.
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge the most according to claim 1 limits,
It is characterized in that, described ICLC is by amplifier P1, amplifier P2, audion VT9, audion VT10, positive pole
The pole that positive pole with amplifier P2 is connected after resistance R32, negative pole is connected with the cathode output end of diode rectifier U1
Property electric capacity C22, one end is connected with the positive pole of polar capacitor C22, the resistance R34 of other end ground connection, negative pole after resistance R28 with
The emitter stage of audion VT9 is connected, the polar capacitor C19 of plus earth, one end is connected with the negative pole of polar capacitor C19,
Resistance R30, the P pole of other end ground connection positive pole with polar capacitor C19 after resistance R29 is connected, N pole is through adjustable resistance R35
The diode D13 of rear ground connection, the polarity that negative pole is connected with the negative pole of amplifier P1, positive pole is connected with the positive pole of amplifier P2
The diode D15 that electric capacity C21, N pole is connected with the base stage of audion VT10, P pole is connected with the outfan of amplifier P2, just
The polarity electricity that pole is connected with the outfan of amplifier P1, negative pole emitter stage with audion VT10 after resistance R33 is connected
Holding C20, positive pole colelctor electrode with audion VT9 after resistance R31 is connected, the polar capacitor C24 of minus earth, and positive pole is through electricity
Be connected with the negative pole of amplifier P2 after resistance R36, polarity that negative pole negative pole with polar capacitor C24 after resistance R37 is connected
Electric capacity C23, and N pole is connected with the emitter stage of audion VT9, P pole after resistance R38 with the negative pole phase of polar capacitor C24
The Zener diode D14 composition connected；The negative pole of described amplifier P2 is connected with the adjustable side of adjustable resistance R35；Described put
The big positive pole of device P1 is connected with the adjustable side of adjustable resistance R30, its outfan also base stage with audion VT9 is connected；Institute
State the grounded collector of audion VT10；The emitter stage of described audion VT9 is also connected with the VCC pin of control chip U2.
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge the most according to claim 2 limits,
It is characterized in that, the described amplifying circuit that compares by audion VT6, audion VT7, audion VT8, field effect transistor MOS2, P pole with
The diode D9 that the colelctor electrode of audion VT6 is connected, N pole is connected with pulse width regulating circuit, positive pole after inductance L5 with three
The polar capacitor C13, P that the colelctor electrode of pole pipe VT6 is connected, negative pole colelctor electrode with audion VT7 after resistance R22 is connected
Pole negative pole with polar capacitor C13 after resistance R20 is connected, the diode D10 of N pole ground connection, the P of positive pole and diode D10
Pole is connected, the polar capacitor C14 of minus earth, positive pole is connected with the base stage of audion VT6, negative pole after resistance R23 with
The polar capacitor C15 that the base stage of audion VT7 is connected, positive pole emitter stage with audion VT6 after resistance R24 is connected,
Negative pole be connected with the base stage of audion VT8 after polar capacitor C16, the P pole of ground connection after resistance R21 with polar capacitor C13's
The diode D11 that positive pole is connected, N pole is connected with the colelctor electrode of audion VT8, the colelctor electrode phase of positive pole and audion VT8
Polar capacitor C17, the P pole that connection, negative pole are connected with the grid of field effect transistor MOS2 after resistance R25 and field effect transistor MOS2
The diode that source electrode is connected, N pole is sequentially connected through transistor VL emitter stage with audion VT8 after resistance R27
D12, one end is connected with the negative pole of polar capacitor C17, the other end is connected with the junction point of transistor VL with resistance R27 can
Adjust resistance R26, and ground connection after positive pole is connected, negative pole is connected with the N pole of diode D12 with the drain electrode of field effect transistor MOS2
Polar capacitor C18 composition；The described emitter stage of audion VT7 be connected with the drain electrode of field effect transistor MOS2 after ground connection；Described
The grounded emitter of audion VT8；The drain electrode of described field effect transistor MOS2 is also connected with current detection circuit.
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge the most according to claim 3 limits,
It is characterized in that, described pulse width regulating circuit by audion VT2, audion VT3, positive pole after resistance R5 with audion VT2's
The collection of the polar capacitor C4 that colelctor electrode is connected, negative pole is connected with the COMP pin of control chip U2, one end and audion VT2
The inductance L4 that electrode is connected, the other end is connected with the negative pole of polar capacitor C4, one end is connected with the base stage of audion VT2
Connect, resistance R7, P pole that the other end is connected with the COMP pin of control chip U2 is connected with the positive pole of polar capacitor C4, N pole
The diode D4 being sequentially connected through resistance R6 emitter stage with audion VT2 after resistance R8, positive pole is sent out with audion VT2's
Polar capacitor C5, the P pole that emitter-base bandgap grading is connected, negative pole is connected with the VFB pin of control chip U2 and the emitter stage of audion VT2
Be connected, diode D5 that N pole is connected with the base stage of audion VT3, positive pole is connected with the junction point of resistance R6 with resistance R8
Connect, polar capacitor C6 that negative pole colelctor electrode with audion VT3 after resistance R9 is connected, and one end is with control chip U2's
The resistance R10 composition that VREF pin is connected, the other end is connected with the emitter stage of audion VT3；Described polar capacitor C6's
Minus earth；The emitter stage of described audion VT3 is connected with the R pin of control chip U2 and the N pole of diode D9 the most respectively.
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge the most according to claim 4 limits,
It is characterized in that, described current detection circuit is by field effect transistor MOS1, audion VT4, audion VT5, negative pole and field effect transistor
Polar capacitor C10, the P pole that the grid of MOS1 is connected, positive pole is connected with the GD pin of control chip U2 after resistance R14 with
The diode D7 that the positive pole of polar capacitor C10 is connected, N pole is connected with the colelctor electrode of audion VT4, one end and control chip
The base of the resistance R12 that the IS pin of U2 is connected, the other end is connected with the emitter stage of audion VT4, positive pole and audion VT4
Polar capacitor C7, the N pole that pole is connected, negative pole is connected with the drain electrode of field effect transistor MOS2 after resistance R15 with field effect transistor
The diode D6 that the source electrode of MOS1 is connected, P pole negative pole with polar capacitor C7 after resistance R11 is connected, positive pole is through resistance
Polar capacitor C8, the P pole warp that after R13, the colelctor electrode with audion VT4 is connected, negative pole is connected with the base stage of audion VT5
After resistance R18, the drain electrode with field effect transistor MOS1 is connected, N pole emitter stage with audion VT5 after resistance R16 is connected
Diode D8, negative pole is connected with the colelctor electrode of audion VT5 after resistance R17, the former limit inductor wire of positive pole and transformator T2
The polar capacitor C11 that the Same Name of Ends of circle L3 is connected, negative pole is connected with the non-same polarity of the former limit inductance coil L3 of transformator T2
Connect rear ground connection, polar capacitor C9 that positive pole is connected with the colelctor electrode of audion VT5, and the former limit electricity of negative pole and transformator T2
The polarity that non-same polarity is connected, positive pole is connected with the non-same polarity of the secondary inductance coil L2 of transformator T2 of sense coil L3
Electric capacity C12 forms；The P pole of described diode D6 also colelctor electrode with audion VT5 be connected after ground connection；Described field effect transistor
The drain electrode of MOS1 also Same Name of Ends with the former limit inductance coil L1 of transformator T2 is connected.
The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge the most according to claim 5 limits,
It is characterized in that, described control chip U2 is the integrated chip of UC384X.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738747.6A CN106301023A (en) | 2016-08-27 | 2016-08-27 | The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738747.6A CN106301023A (en) | 2016-08-27 | 2016-08-27 | The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits |
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| Publication Number | Publication Date |
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| CN106301023A true CN106301023A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610738747.6A Withdrawn CN106301023A (en) | 2016-08-27 | 2016-08-27 | The skew controllable electric power that a kind of anode electrolytic cell current measuring device surge limits |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825895A (en) * | 2022-06-27 | 2022-07-29 | 合肥博雷电气有限公司 | Input anti-surge slow starting circuit with overcurrent protection function |
-
2016
- 2016-08-27 CN CN201610738747.6A patent/CN106301023A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825895A (en) * | 2022-06-27 | 2022-07-29 | 合肥博雷电气有限公司 | Input anti-surge slow starting circuit with overcurrent protection function |
| CN114825895B (en) * | 2022-06-27 | 2022-09-20 | 合肥博雷电气有限公司 | Input anti-surge slow starting circuit with overcurrent protection function |
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