CN105978329A - Current peak constant circuit-based switching power supply for leather spray dryer - Google Patents
Current peak constant circuit-based switching power supply for leather spray dryer Download PDFInfo
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- CN105978329A CN105978329A CN201610421092.XA CN201610421092A CN105978329A CN 105978329 A CN105978329 A CN 105978329A CN 201610421092 A CN201610421092 A CN 201610421092A CN 105978329 A CN105978329 A CN 105978329A
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- polar capacitor
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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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention discloses a current peak constant circuit-based switching power supply for a leather spray dryer. The current peak constant circuit-based switching power supply is characterized by mainly comprising a control chip U, a transformer T, an overvoltage protection circuit, a current adjusting circuit, a field-effect tube MOS1, a polar capacitor C5, a diode D3, a polar capacitor C4, a current peak constant circuit and a photoelectric coupling switching circuit, wherein the current peak constant circuit is connected between the overvoltage protection circuit and a source of the field-effect tube MOS1 in series; and the photoelectric coupling switching circuit is connected with the current adjusting circuit and a secondary induction coil L3 of the transformer T separately. According to the current peak constant circuit-based switching power supply for the leather spray dryer, high-voltage pulses in voltage and high-current ripples in current can be effectively adjusted; and dynamic states of the voltage and the current are kept stable, so that the condition that the current peak constant circuit-based switching power supply can output stable voltage and current is ensured; the stability of the drying temperature of the high-polymer leather spray dryer is ensured; and deformation or a paint failure of a high-polymer shoe material leather surface is effectively prevented.
Description
Technical field
The present invention relates to electronic applications, specifically, be the spray of a kind of leather based on current peak constant circuit
Paint dehydrator Switching Power Supply.
Background technology
Along with high molecular leather is widely used in leatherware industry, at people's quality requirements to leatherware
While more and more higher, also the quality of high molecular leather is had higher requirement.But, produce
High-quality high molecular leather, it is critical only that macromolecule shoe material leather sprays paint this link of post-drying.
At present there is output voltage and unstable the asking of electric current in the spray paint Switching Power Supply of dehydrator of high molecular leather
Topic, causes high molecular leather to spray paint the drying temperature extremely unstable of dehydrator, causes macromolecule shoe material leather table
There is deformation or falls the defect of paint in face.
The dehydrator switch therefore it provides a kind of high molecular leather that can export stable voltage and current sprays paint
Power supply is the task of top priority.
Summary of the invention
It is an object of the invention to overcome the spray paint Switching Power Supply of dehydrator of high molecular leather of the prior art to deposit
In the defect that output voltage and electric current are unstable, it is provided that a kind of high molecular leather spray paint the switch electricity of dehydrator
Source.
The present invention is achieved through the following technical solutions: a kind of leather based on current peak constant circuit sprays paint
Dehydrator Switching Power Supply, mainly by control chip U, transformator T, field effect transistor MOS1, negative pole is imitated with field
Should the polar capacitor that grid is connected, positive pole is connected with the OUT pin of control chip U of pipe MOS1
The drain electrode with field effect transistor MOS1 after resistance R13 of C5, N pole is connected, P pole is with control chip U's
The diode D3 that IFB pin is connected, positive pole after resistance R12 with the COMP pin of control chip U
Be connected, polar capacitor C4 that negative pole is connected with the VFB pin of control chip U after resistance R11,
The overvoltage crowbar being connected with VCC pin and the former limit of transformator T of control chip U respectively, is serially connected in
Current peak constant circuit between overvoltage crowbar and the source electrode of field effect transistor MOS1, with control chip
The matrix current adjustment circuit that U is connected, and respectively with matrix current adjustment circuit and transformator T secondary inductance coil
The photoelectric coupling switch circuit composition that L3 is connected；The negative pole of described polar capacitor C4 and photoelectric coupling switch
Circuit be connected after ground connection；The source electrode of described field effect transistor MOS1 is connected with overvoltage crowbar, its leakage
The non-same polarity of limit former with transformator T, pole inductance coil L2 be connected after ground connection.
Described current peak constant circuit is imitated by amplifier P1, amplifier P2, field effect transistor MOS3, field
Should pipe MOS4, one end is connected with the positive pole of amplifier P1, the source electrode of the other end and field effect transistor MOS1
The resistance R19 being connected, negative pole is connected with the grid of field effect transistor MOS3, positive pole and amplifier P1
Polar capacitor C11, the N pole that outfan is connected after resistance R23 with the drain electrode phase of field effect transistor MOS3
Connect, diode D9 that P pole negative pole with amplifier P1 after resistance R20 is connected, negative pole is through resistance
After R22 the drain electrode with field effect transistor MOS3 be connected, positive pole after resistance R21 with the P of diode D9
The polar capacitor C10 that pole is connected, after negative pole resistance R26 the negative pole with amplifier P2 be connected, positive pole warp
Polar capacitor C12, the P pole being connected with the source electrode of field effect transistor MOS3 after resistance R24 and polar capacitor
Two poles that the negative pole of C12 is connected, N pole is connected with the source electrode of field effect transistor MOS4 after resistance R27
Pipe D11, N pole is connected with the positive pole of amplifier P2, P pole after resistance R25 with field effect transistor MOS3
The diode D10 that is connected of source electrode, positive pole is connected with the negative pole of amplifier P2, negative pole is through resistance R29
The polar capacitor C13 of rear ground connection, and one end is connected with the outfan of amplifier P2, the other end is imitated with field
Should the resistance R28 composition that is connected of the grid of pipe MOS4；The grounded drain of described field effect transistor MOS3；
The drain outfan as current peak constant circuit and the overvoltage crowbar of described field effect transistor MOS4
It is connected.
Described overvoltage crowbar by audion VT3, positive pole sequentially after resistance R1 and resistance R2 with three poles
The base stage of pipe VT3 is connected, polar capacitor C1, the N pole of minus earth and transformator T former limit inductance coil
Zener diode D6, the P pole that the non-same polarity of L1 is connected, P pole is connected with the base stage of audion VT3
The Same Name of Ends of limit inductance coil L2 former with transformator T is connected, N pole is sequentially through resistance R4 and resistance R3
The diode D5 that negative pole with polar capacitor C1 is connected afterwards, one end is connected with the negative pole of polar capacitor C1,
The transmitting of the inductance L4 that the other end is connected with the VCC pin of control chip U, positive pole and audion VT3
The polarity that pole is connected, the Same Name of Ends of limit inductance coil L1 former with transformator T is connected after negative pole resistance R5
Electric capacity C6, and the Same Name of Ends of limit former with transformator T, N pole inductance coil L1 is connected, P pole is imitated with field
Should the diode D4 composition that is connected of the drain electrode of pipe MOS4；The grounded collector of described audion VT3；
The positive pole of described polar capacitor C1 and negative pole are collectively forming the input of overvoltage crowbar.
Described photoelectric coupling switch electricity routing optocoupler IC, audion VT4, audion VT5, field is imitated
Should pipe MOS2, one end is connected with the grid of audion VT4, the first of the other end and photoelectrical coupler IC
The resistance R14 that input is connected, negative pole colelctor electrode with audion VT5 after resistance R15 is connected,
After polar capacitor C7, N electrode resistance R16 that positive pole is connected with the first input end of photoelectrical coupler IC with
The negative pole of polar capacitor C7 is connected, P pole is connected with the non-same polarity of transformator T secondary inductance coil L3
The diode D8 connect, negative pole is connected with the non-same polarity of transformator T secondary inductance coil L3, positive pole with
The polar capacitor C9 that the Same Name of Ends of transformator T secondary inductance coil L3 is connected, positive pole is after resistance R18
Be connected with the emitter stage of audion VT5, negative pole after resistance R6 with transformator T secondary inductance coil L3
The polar capacitor C8 that is connected of Same Name of Ends, and P pole is connected with the drain electrode of field effect transistor MOS2, N
Pole is sequentially connected through resistance R7 Same Name of Ends with transformator T secondary inductance coil L3 after critesistor RT
The diode D7 composition connect；The source ground of described field effect transistor MOS, its grid and photoelectrical coupler IC
The second input be connected；The grounded collector of described audion VT4, its emitter stage and audion VT5
Base stage be connected；First outfan of described photoelectrical coupler IC is connected with matrix current adjustment circuit, its
Two outfans are connected with the negative pole of polar capacitor C4.
Described matrix current adjustment circuit by audion VT1, audion VT2, positive pole after resistance R7 with control
The polar capacitor C2 that the VREF pin of chip U is connected, negative pole is connected with the base stage of audion VT1,
P pole is connected with the CT pin of control chip U, N pole after resistance R8 with the base stage phase of audion VT1
The diode D1 connected, negative pole be connected with the colelctor electrode of audion VT2 after ground connection, positive pole and control chip
The polar capacitor C3 that the GND pin of U is connected, and N pole after resistance R10 with photoelectrical coupler IC
The diode that the first outfan is connected, P pole emitter stage with audion VT2 after resistance R9 is connected
D2 forms；The grounded collector of described audion VT1, its emitter stage are connected with the base stage of audion VT2
Connect.
For the practical effect of the present invention, described control chip U the most preferentially uses UC3844A integrated
Chip realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the high current ripple in the high voltage pulse in voltage and electric current can effectively be adjusted by the present invention
Whole, make the dynamic held stationary of voltage and current, ensure that the present invention can export stable voltage and electricity
Stream, and ensure that high molecular leather sprays paint the stability of drying temperature of dehydrator, is effectively prevented height
There is deformation or falls paint in molecule footwear material leather surface.
(2) instantaneous high current that electric current produces can be adjusted by the present invention, makes instantaneous high current weaken, and
Make the current intensity held stationary state of output electric current, thus improve the stability of the electric current of present invention output.
(3) control chip of the present invention have employed the integrated chip of UC3844A and realizes, the work of this chip
Stable performance, can effectively be carried out the intensity of output electric current after this chip combines with peripheral circuit simultaneously
Adjust, thus improve the load capacity 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 current peak constant circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U, transformator T, field effect transistor MOS1, electricity
Resistance R11, resistance R12, resistance R13, polar capacitor C4, polar capacitor C5, diode D3, electric current
Peak value constant circuit, matrix current adjustment circuit, photoelectric coupling switch circuit, and overvoltage crowbar composition.
During connection, the negative pole of polar capacitor C5 is connected with the grid of field effect transistor MOS1, its positive pole with
The OUT pin of control chip U is connected.The N pole of diode D3 after resistance R13 with field effect transistor
The drain electrode of MOS1 is connected, its P pole is connected with the IFB pin of control chip U.Polar capacitor C4
Positive pole COMP pin with control chip U after resistance R12 be connected, its negative pole is through resistance R11
It is connected with the VFB pin of control chip U afterwards.Current peak constant circuit be serially connected in overvoltage crowbar with
Between the source electrode of field effect transistor MOS1.Overvoltage crowbar respectively with the VCC pin of control chip U and
The former limit of transformator T is connected.Matrix current adjustment circuit is connected with control chip U.Photoelectric coupling switch circuit
It is connected with matrix current adjustment circuit and transformator T secondary inductance coil L3 respectively.
The negative pole of described polar capacitor C4 be connected with photoelectric coupling switch circuit after ground connection；Described field effect
The source electrode of pipe MOS1 is connected with overvoltage crowbar, its drain electrode and transformator T former limit inductance coil L2
Non-same polarity be connected after ground connection；The Same Name of Ends of described transformator T secondary inductance coil L3 and non-same polarity
It is connected with dehydrator respectively.
Further, described overvoltage crowbar by audion VT3, resistance R1, resistance R2, resistance R3,
Resistance R4, resistance R5, inductance L4, polar capacitor C1, polar capacitor C6, diode D5, and two
Pole pipe D6 forms.
During connection, the positive pole of polar capacitor C1 sequentially after resistance R1 and resistance R2 with audion VT3
Base stage be connected, its minus earth.The N pole of Zener diode D6 and transformator T former limit inductance coil
The non-same polarity of L1 is connected, its P pole is connected with the base stage of audion VT3.The P pole of diode D5
The Same Name of Ends of limit inductance coil L2 former with transformator T is connected, its N pole is sequentially through resistance R4 and resistance
After R3, the negative pole with polar capacitor C1 is connected.One end of inductance L4 is connected with the negative pole of polar capacitor C1
Connect, its other end is connected with the VCC pin of control chip U.
Meanwhile, the positive pole of polar capacitor C6 be connected with the emitter stage of audion VT3, its negative pole resistance R5
The Same Name of Ends of limit inductance coil L1 former with transformator T is connected afterwards.The N pole of diode D4 and transformator T
The Same Name of Ends of former limit inductance coil L1 is connected, its P pole is connected with the drain electrode of field effect transistor MOS4.Institute
State the grounded collector of audion VT3；The positive pole of described polar capacitor C1 and negative pole are collectively forming overvoltage and protect
The input of protection circuit is also connected with external power source.
Wherein, described photoelectric coupling switch electricity routing optocoupler IC, audion VT4, audion VT5,
Field effect transistor MOS2, resistance R6, resistance R14, resistance R15, resistance R16, resistance R17, resistance
R18, critesistor RT, polar capacitor C7, polar capacitor C8, polar capacitor C9, diode D7, with
And diode D8 composition.
During connection, one end of resistance R14 is connected with the grid of audion VT4, its other end and photoelectricity
The first input end of bonder IC is connected.The negative pole of polar capacitor C7 after resistance R15 with audion VT5
Colelctor electrode be connected, its positive pole is connected with the first input end of photoelectrical coupler IC.Diode D8's
After N electrode resistance R16 the negative pole with polar capacitor C7 be connected, its P pole and transformator T secondary inductance line
The non-same polarity of circle L3 is connected.
The negative pole of polar capacitor C9 is connected with the non-same polarity of transformator T secondary inductance coil L3, its just
Pole is connected with the Same Name of Ends of transformator T secondary inductance coil L3.The positive pole of polar capacitor C8 is through resistance R18
Afterwards the emitter stage with audion VT5 be connected, its negative pole after resistance R6 with transformator T secondary inductance line
The Same Name of Ends of circle L3 is connected.The P pole of diode D7 is connected with the drain electrode of field effect transistor MOS2, it
N pole sequentially after resistance R7 and critesistor RT with the Same Name of Ends phase of transformator T secondary inductance coil L3
Connect.
The second input phase of the source ground of described field effect transistor MOS, its grid and photoelectrical coupler IC
Connect；The grounded collector of described audion VT4, its emitter stage are connected with the base stage of audion VT5；
First outfan of described photoelectrical coupler IC is connected with matrix current adjustment circuit, its second outfan and polarity
The negative pole of electric capacity C4 is connected.
Further, described matrix current adjustment circuit by audion VT1, audion VT2, resistance R7,
Resistance R8, resistance R9, resistance R10, polar capacitor C2, polar capacitor C3, diode D1, and
Diode D2 forms.
During connection, the positive pole of polar capacitor C2 after resistance R7 with the VREF pin phase of control chip U
Connect, its negative pole is connected with the base stage of audion VT1.The P pole of diode D1 is with control chip U's
CT pin is connected, its N pole base stage with audion VT1 after resistance R8 is connected.Polar capacitor
The negative pole of C3 be connected with the colelctor electrode of audion VT2 after ground connection, the GND of its positive pole and control chip U
Pin is connected.The N pole of diode D2 after resistance R10 with the first outfan phase of photoelectrical coupler IC
Connect, its P pole emitter stage with audion VT2 after resistance R9 is connected.Described audion VT1's
Grounded collector, its emitter stage are connected with the base stage of audion VT2.
As in figure 2 it is shown, described current peak constant circuit is by amplifier P1, amplifier P2, field effect transistor
MOS3, field effect transistor MOS4, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23,
Resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, polar capacitor
C10, polar capacitor C11, polar capacitor C12, polar capacitor C13, diode D9, diode D10,
And diode D11 composition.
During connection, one end of resistance R19 is connected with the positive pole of amplifier P1, its other end and field effect
The source electrode of pipe MOS1 is connected.The negative pole of polar capacitor C11 is connected with the grid of field effect transistor MOS3,
Its positive pole is connected with the outfan of amplifier P1.The N pole of diode D9 after resistance R23 with field effect
The drain electrode of pipe MOS3 is connected, its P pole negative pole with amplifier P1 after resistance R20 is connected.Pole
The drain electrode with field effect transistor MOS3 after resistance R22 of the negative pole of property electric capacity C10 is connected, its positive pole is through electricity
It is connected with the P pole of diode D9 after resistance R21.
Meanwhile, be connected with the negative pole of amplifier P2 after the negative pole resistance R26 of polar capacitor C12, its just
Pole source electrode with field effect transistor MOS3 after resistance R24 is connected.The P pole of diode D11 and polarity electricity
The negative pole holding C12 is connected, its N pole source electrode with field effect transistor MOS4 after resistance R27 is connected.
The N pole of diode D10 is connected with the positive pole of amplifier P2, its P pole after resistance R25 with field effect
The source electrode of pipe MOS3 is connected.The positive pole of polar capacitor C13 is connected with the negative pole of amplifier P2, it is born
Pole is ground connection after resistance R29.One end of resistance R28 is connected with the outfan of amplifier P2, its other end
It is connected with the grid of field effect transistor MOS4.
The grounded drain of described field effect transistor MOS3；The drain electrode of described field effect transistor MOS4 is as current peak
The outfan of value constant circuit is also connected with overvoltage crowbar.
During operation, the high current ripple in the high voltage pulse in voltage and electric current can effectively be entered by the present invention
Row sum-equal matrix, makes the dynamic held stationary of voltage and current, ensures that the present invention can export stable voltage
And electric current, and ensure that high molecular leather sprays paint the stability of drying temperature of dehydrator, is effectively prevented
There is deformation or falls paint in macromolecule shoe material leather surface.
Meanwhile, the instantaneous high current that electric current produces can be adjusted by the present invention, makes instantaneous high current weaken,
And make the current intensity held stationary state of output electric current, thus improve stablizing of the electric current of present invention output
Property.The control chip of the present invention have employed the integrated chip of UC3844A and realizes, and the service behaviour of this chip is steady
Fixed, can effectively the intensity of output electric current be adjusted after this chip combines with peripheral circuit simultaneously,
Thus improve the load capacity of the present invention.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. a leather based on current peak constant circuit sprays paint dehydrator Switching Power Supply, it is characterised in that
Mainly by control chip U, transformator T, field effect transistor MOS1, negative pole and the grid of field effect transistor MOS1
Be connected, polar capacitor C5, N pole that positive pole is connected with the OUT pin of control chip U is through resistance R13
Be connected with the drain electrode of field effect transistor MOS1 afterwards, P pole is connected with the IFB pin of control chip U two
Pole pipe D3, positive pole COMP pin with control chip U after resistance R12 is connected, negative pole is through resistance
The polar capacitor C4 being connected with the VFB pin of control chip U after R11, respectively with control chip U's
The overvoltage crowbar that VCC pin limit former with transformator T is connected, is serially connected in overvoltage crowbar and imitates with field
Should current peak constant circuit between the source electrode of pipe MOS1, the electric current being connected with control chip U adjusts
Circuit, and the photoelectric coupling being connected with matrix current adjustment circuit and transformator T secondary inductance coil L3 respectively
On-off circuit forms；The negative pole of described polar capacitor C4 be connected with photoelectric coupling switch circuit after ground connection；Institute
The source electrode stating field effect transistor MOS1 is connected with overvoltage crowbar, its drain electrode and transformator T former limit inductance
The non-same polarity of coil L2 be connected after ground connection.
A kind of leather based on current peak constant circuit the most according to claim 1 sprays paint dehydrator
Switching Power Supply, it is characterised in that described current peak constant circuit is imitated by amplifier P1, amplifier P2, field
Should pipe MOS3, field effect transistor MOS4, one end is connected with the positive pole of amplifier P1, the other end and field are imitated
Should the resistance R19 that is connected of the source electrode of pipe MOS1, negative pole is connected with the grid of field effect transistor MOS3,
Polar capacitor C11, the N pole that positive pole is connected with the outfan of amplifier P1 is imitated with field after resistance R23
Should the drain electrode of pipe MOS3 is connected, P pole negative pole with amplifier P1 after resistance R20 is connected two poles
Pipe D9, negative pole drain electrode with field effect transistor MOS3 after resistance R22 is connected, positive pole is through resistance R21
The polar capacitor C10 being connected with the P pole of diode D9 afterwards, with amplifier P2's after negative pole resistance R26
The polar capacitor that negative pole is connected, positive pole is connected with the source electrode of field effect transistor MOS3 after resistance R24
C12, P pole is connected with the negative pole of polar capacitor C12, N pole after resistance R27 with field effect transistor MOS4
Diode D11, the N pole that is connected of source electrode be connected with the positive pole of amplifier P2, P pole is through resistance R25
The diode D10 being connected with the source electrode of field effect transistor MOS3 afterwards, positive pole is connected with the negative pole of amplifier P2
Connect, negative pole polar capacitor C13 of ground connection after resistance R29, and the outfan phase of one end and amplifier P2
The resistance R28 composition that connection, the other end are connected with the grid of field effect transistor MOS4；Described field effect transistor
The grounded drain of MOS3；The drain electrode of described field effect transistor MOS4 is as the output of current peak constant circuit
End is also connected with overvoltage crowbar.
A kind of leather based on current peak constant circuit the most according to claim 2 sprays paint dehydrator
Switching Power Supply, it is characterised in that described overvoltage crowbar is by audion VT3, and positive pole is sequentially through resistance R1
Be connected with base stage with audion VT3 after resistance R2, polar capacitor C1, the N pole of minus earth and change
The non-same polarity of depressor T former limit inductance coil L1 is connected, P pole is connected with the base stage of audion VT3
The Same Name of Ends of limit former with transformator T, Zener diode D6, P pole inductance coil L2 is connected, N pole sequentially
Through the diode D5 that resistance R4 negative pole with polar capacitor C1 after resistance R3 is connected, one end and polarity
The inductance L4 that the negative pole of electric capacity C1 is connected, the other end is connected with the VCC pin of control chip U, just
Pole is connected with the emitter stage of audion VT3, limit inductance coil L1 former with transformator T after negative pole resistance R5
The polar capacitor C6 that is connected of Same Name of Ends, and limit former with transformator T, N pole inductance coil L1's is of the same name
The diode D4 composition that end is connected, P pole is connected with the drain electrode of field effect transistor MOS4；Described audion
The grounded collector of VT3；The positive pole of described polar capacitor C1 is collectively forming the defeated of overvoltage crowbar with negative pole
Enter end.
A kind of leather based on current peak constant circuit the most according to claim 3 sprays paint dehydrator
Switching Power Supply, it is characterised in that described photoelectric coupling switch electricity routing optocoupler IC, audion VT4,
Audion VT5, field effect transistor MOS2, one end is connected with the grid of audion VT4, the other end and light
The resistance R14 that the first input end of electric coupler IC is connected, negative pole after resistance R15 with audion VT5
Colelctor electrode is connected, positive pole is connected with the first input end of photoelectrical coupler IC polar capacitor C7, N
After electrode resistance R16 the negative pole with polar capacitor C7 be connected, P pole and transformator T secondary inductance coil L3
The diode D8 that is connected of non-same polarity, the non-same polarity of negative pole and transformator T secondary inductance coil L3
Be connected, polar capacitor C9 that positive pole is connected with the Same Name of Ends of transformator T secondary inductance coil L3, just
Pole emitter stage with audion VT5 after resistance R18 is connected, negative pole after resistance R6 with transformator T
The polar capacitor C8 that the Same Name of Ends of secondary inductance coil L3 is connected, and P pole and field effect transistor MOS2
Drain electrode be connected, N pole sequentially after resistance R7 and critesistor RT with transformator T secondary inductance coil
The diode D7 composition that the Same Name of Ends of L3 is connected；The source ground of described field effect transistor MOS, its grid
It is connected with second input of photoelectrical coupler IC；The grounded collector of described audion VT4, its transmitting
Pole is connected with the base stage of audion VT5；First outfan of described photoelectrical coupler IC adjusts electricity with electric current
Road is connected, its second outfan is connected with the negative pole of polar capacitor C4.
A kind of leather based on current peak constant circuit the most according to claim 4 sprays paint dehydrator
Switching Power Supply, it is characterised in that described matrix current adjustment circuit is by audion VT1, audion VT2, positive pole
After resistance R7 the VREF pin with control chip U be connected, the base stage phase of negative pole and audion VT1
Connect polar capacitor C2, P pole be connected with the CT pin of control chip U, N pole after resistance R8 and
The diode D1 that the base stage of audion VT1 is connected, after negative pole is connected with the colelctor electrode of audion VT2
The polar capacitor C3 that ground connection, positive pole are connected with the GND pin of control chip U, and N pole is through resistance
After R10 the first outfan with photoelectrical coupler IC be connected, P pole after resistance R9 with audion VT2
Emitter stage be connected diode D2 composition；The grounded collector of described audion VT1, its emitter stage
It is connected with the base stage of audion VT2.
A kind of leather based on current peak constant circuit the most according to claim 5 sprays paint dehydrator
Switching Power Supply, it is characterised in that described control chip U is the integrated chip of UC3844A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421092.XA CN105978329A (en) | 2016-06-13 | 2016-06-13 | Current peak constant circuit-based switching power supply for leather spray dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421092.XA CN105978329A (en) | 2016-06-13 | 2016-06-13 | Current peak constant circuit-based switching power supply for leather spray dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105978329A true CN105978329A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421092.XA Pending CN105978329A (en) | 2016-06-13 | 2016-06-13 | Current peak constant circuit-based switching power supply for leather spray dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672342A (en) * | 2017-10-17 | 2019-04-23 | 克兰电子公司 | Radiation hardness analog latch peak-current mode for power converter controls |
| CN115296259A (en) * | 2022-09-27 | 2022-11-04 | 深圳利普芯微电子有限公司 | Overvoltage protection circuit and LED drive power supply |
-
2016
- 2016-06-13 CN CN201610421092.XA patent/CN105978329A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672342A (en) * | 2017-10-17 | 2019-04-23 | 克兰电子公司 | Radiation hardness analog latch peak-current mode for power converter controls |
| CN109672342B (en) * | 2017-10-17 | 2021-03-16 | 克兰电子公司 | Radiation tolerant analog latch-up peak current mode control for power converters |
| CN115296259A (en) * | 2022-09-27 | 2022-11-04 | 深圳利普芯微电子有限公司 | Overvoltage protection circuit and LED drive power supply |
| CN115296259B (en) * | 2022-09-27 | 2022-12-20 | 深圳利普芯微电子有限公司 | Overvoltage protection circuit and LED drive power supply |
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