CN205829464U - A kind of leather based on current peak constant circuit sprays paint dehydrator Switching Power Supply - Google Patents

Abstract

The utility model discloses a kind of leather based on current peak constant circuit to spray paint dehydrator Switching Power Supply; it is characterized in that; main by control chip U; transformator T; overvoltage crowbar; matrix current adjustment circuit; field effect transistor MOS1; polar capacitor C5; diode D3; polar capacitor C4, the current peak constant circuit being serially connected between overvoltage crowbar and the source electrode of field effect transistor MOS1, and the photoelectric coupling switch circuit composition being connected with matrix current adjustment circuit and transformator T secondary inductance coil L3 respectively.Current ripple high in high voltage pulse in voltage and electric current can be effectively adjusted by this utility model, make the dynamic held stationary of voltage and current, ensure that this utility model can export stable voltage and current, and ensure that high molecular leather sprays paint the stability of drying temperature of dehydrator, is effectively prevented macromolecule shoe material leather surface and deformation occurs or fall paint.

Description

A kind of leather based on current peak constant circuit sprays paint dehydrator Switching Power Supply

Technical field

This utility model relates to electronic applications, specifically, is that a kind of leather based on current peak constant circuit sprays paint Dehydrator Switching Power Supply.

Background technology

Along with high molecular leather is widely used in leatherware industry, people to the quality requirements of leatherware increasingly While height, also the quality of high molecular leather is had higher requirement.But, high-quality macromolecule skin will be produced Leather, it is critical only that macromolecule shoe material leather sprays paint this link of post-drying.

At present there is output voltage and the unstable problem of electric current in the spray paint Switching Power Supply of dehydrator of high molecular leather, causes High molecular leather sprays paint the drying temperature extremely unstable of dehydrator, causes macromolecule shoe material leather surface deformation occur or fall paint Defect.

Therefore it provides a kind of high molecular leather that can export stable voltage and current sprays paint dehydrator Switching Power Supply just It it is the task of top priority.

Utility model content

The purpose of this utility model is 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 Switching Power Supply of dehydrator.

This utility model is achieved through the following technical solutions: a kind of leather based on current peak constant circuit sprays paint baking Dry machine Switching Power Supply, mainly by control chip U, transformator T, field effect transistor MOS1, the grid phase of negative pole and field effect transistor MOS1 Connect, polar capacitor C5, the N pole that is connected with the OUT pin of control chip U of positive pole after resistance R13 with field effect transistor MOS1 The diode D3 that drain electrode is connected, P pole is connected with the IFB pin of control chip U, positive pole after resistance R12 with control core The polar capacitor C4 that the COMP pin of sheet U is connected, negative pole is connected with the VFB pin of control chip U after resistance R11, point The overvoltage crowbar not being connected with VCC pin and the former limit of transformator T of control chip U, be serially connected in overvoltage crowbar with Current peak constant circuit between the source electrode of field effect transistor MOS1, the matrix current adjustment circuit being connected with control chip U, and The photoelectric coupling switch circuit composition being connected with matrix current adjustment circuit and transformator T secondary inductance coil L3 respectively；Described pole The negative pole of property electric capacity C4 be connected with photoelectric coupling switch circuit after ground connection；The source electrode of described field effect transistor MOS1 and overvoltage protection Ground connection after circuit is connected, its non-same polarity draining limit inductance coil L2 former with transformator T is connected.

Described current peak constant circuit by amplifier P1, amplifier P2, field effect transistor MOS3, field effect transistor MOS4, one The resistance R19 that end is connected with the positive pole of amplifier P1, the other end is connected with the source electrode of field effect transistor MOS1, negative pole is imitated with field Should polar capacitor C11, the N pole that grid is connected, positive pole is connected with the outfan of amplifier P1 of pipe MOS3 after resistance R23 Be connected with the drain electrode of field effect transistor MOS3, diode D9 that P pole negative pole with amplifier P1 after resistance R20 is connected, negative Pole drain electrode with field effect transistor MOS3 after resistance R22 is connected, positive pole P pole with diode D9 after resistance R21 is connected Polar capacitor C10, after negative pole resistance R26 the negative pole with amplifier P2 be connected, positive pole after resistance R24 with field effect transistor Polar capacitor C12, the P pole that the source electrode of MOS3 is connected is connected with the negative pole of polar capacitor C12, N pole after resistance R27 with field Diode D11, the N pole that the source electrode of effect pipe MOS4 is connected is connected with the positive pole of amplifier P2, P pole after resistance R25 with The diode D10 that the source electrode of field effect transistor MOS3 is connected, 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 grid of the other end and field effect transistor MOS4 The resistance R28 composition that pole is connected；The grounded drain of described field effect transistor MOS3；The drain electrode of described field effect transistor MOS4 is as electricity Flow the outfan of peak value constant circuit and be connected with overvoltage crowbar.

Described overvoltage crowbar by audion VT3, positive pole sequentially after resistance R1 and resistance R2 with the base of audion VT3 Pole is connected, the non-same polarity of limit former with transformator T, polar capacitor C1, the N pole inductance coil L1 of minus earth is connected, P pole The Same Name of Ends of limit former with transformator T, Zener diode D6, the P pole inductance coil L2 being connected with the base stage of audion VT3 is connected Connect, diode D5 that N pole is sequentially connected through resistance R4 negative pole with polar capacitor C1 after resistance R3, one end and polar capacitor The transmitting of the inductance L4 that the negative pole of C1 is connected, the other end is connected with the VCC pin of control chip U, positive pole and audion VT3 The polar capacitor C6 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, and N The diode that Same Name of Ends is connected, P pole is connected with the drain electrode of field effect transistor MOS4 of limit former with transformator T, pole inductance coil L1 D4 forms；The grounded collector of described audion VT3；The positive pole of described polar capacitor C1 and negative pole are collectively forming overvoltage protection electricity The input on road.

Described photoelectric coupling switch electricity routing optocoupler IC, audion VT4, audion VT5, field effect transistor MOS2, The resistance R14 that one end is connected with the grid of audion VT4, the other end is connected with the first input end of photoelectrical coupler IC, Negative pole colelctor electrode with audion VT5 after resistance R15 is connected, positive pole is connected with the first input end of photoelectrical coupler IC Polar capacitor C7, N electrode resistance R16 after be connected with the negative pole of polar capacitor C7, P pole and transformator T secondary inductance coil L3 The diode D8 that is connected of non-same polarity, 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 after resistance R18 with audion VT5's The polar capacitor C8 that emitter stage is connected, negative pole Same Name of Ends with transformator T secondary inductance coil L3 after resistance R6 is connected, And P pole is connected with the drain electrode of field effect transistor MOS2, N pole sequentially after resistance R7 and critesistor RT with transformator T secondary The diode D7 composition that the Same Name of Ends of inductance coil L3 is connected；The source ground of described field effect transistor MOS, its grid and photoelectricity Second input of bonder IC is connected；The grounded collector of described audion VT4, its emitter stage and the base of audion VT5 Pole is connected；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.

Described matrix current adjustment circuit by audion VT1, audion VT2, positive pole after resistance R7 with the VREF of control chip U Polar capacitor C2, the P pole that pin is connected, negative pole is connected with the base stage of audion VT1 is connected with the CT pin of control chip U Connect, diode D1 that N pole base stage with audion VT1 after resistance R8 is connected, negative pole is connected with the colelctor electrode of audion VT2 Connect rear ground connection, polar capacitor C3 that positive pole is connected with the GND pin of control chip U, and N pole after resistance R10 with photoelectricity The diode D2 group that first outfan of bonder IC is connected, P pole emitter stage with audion VT2 after resistance R9 is connected Become；The grounded collector of described audion VT1, its emitter stage are connected with the base stage of audion VT2.

For practical effect of the present utility model, described control chip U the most preferentially uses the integrated chip of UC3844A Realize.

This utility model 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 this utility model Whole, make the dynamic held stationary of voltage and current, ensure that this utility model can export stable voltage and current, and Ensure that high molecular leather sprays paint the stability of drying temperature of dehydrator, is effectively prevented macromolecule shoe material leather surface and goes out Now deform or fall paint.

(2) instantaneous high current that electric current produces can be adjusted by this utility model, makes instantaneous high current weaken, and makes defeated Go out the current intensity held stationary state of electric current, thus improve the stability of the electric current of this utility model output.

(3) control chip of the present utility model 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 Load capacity of the present utility model.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model.

Fig. 2 is the electrical block diagram of current peak constant circuit of the present utility model.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing thereof, this utility model is described in further detail, but reality of the present utility model The mode of executing is not limited to this.

Embodiment

As it is shown in figure 1, this utility model is mainly by control chip U, transformator T, field effect transistor MOS1, resistance R11, resistance R12, resistance R13, polar capacitor C4, polar capacitor C5, diode D3, current peak constant circuit, matrix current adjustment circuit, photoelectricity Coupled switched circuits, 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 and control chip U OUT pin is connected.The drain electrode with field effect transistor MOS1 after resistance R13 of the N pole of diode D3 is connected, its P pole and control The IFB pin of chip U is connected.The positive pole of polar capacitor C4 COMP pin with control chip U after resistance R12 is connected, Its negative pole VFB pin with control chip U after resistance R11 is connected.Current peak constant circuit is serially connected in overvoltage protection electricity Between road and the source electrode of field effect transistor MOS1.Overvoltage crowbar respectively with VCC pin and the former limit of transformator T of control chip U It is connected.Matrix current adjustment circuit is connected with control chip U.Photoelectric coupling switch circuit respectively with matrix current adjustment circuit and transformation Device T secondary inductance coil L3 is connected.

The negative pole of described polar capacitor C4 be connected with photoelectric coupling switch circuit after ground connection；Described field effect transistor MOS1 Ground connection after source electrode is connected with overvoltage crowbar, its non-same polarity draining limit inductance coil L2 former with transformator T is connected； The Same Name of Ends of described transformator T secondary inductance coil L3 is connected with dehydrator respectively with non-same polarity.

Further, described overvoltage crowbar is by audion VT3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, inductance L4, polar capacitor C1, polar capacitor C6, diode D5, and diode D6 form.

During connection, the positive pole of polar capacitor C1 is sequentially connected through resistance R1 base stage with audion VT3 after resistance R2, Its minus earth.The non-same polarity of limit former with transformator T, the N pole inductance coil L1 of Zener diode D6 is connected, its P pole and three The base stage of pole pipe VT3 is connected.The Same Name of Ends of limit former with transformator T, the P pole inductance coil L2 of diode D5 is connected, its N pole Sequentially it is connected through resistance R4 negative pole with polar capacitor C1 after resistance R3.One end of inductance L4 and the negative pole of polar capacitor C1 Be connected, 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, after its negative pole resistance R5 with transformator The Same Name of Ends of T former limit inductance coil L1 is connected.The Same Name of Ends phase of limit former with transformator T, the N pole inductance coil L1 of diode D4 Connect, its P pole is connected with the drain electrode of field effect transistor MOS4.The grounded collector of described audion VT3；Described polar capacitor C1 Positive pole be collectively forming the input of overvoltage crowbar with negative pole and be 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, pole Property electric capacity C8, polar capacitor C9, diode D7, and diode D8 composition.

During connection, one end of resistance R14 is connected with the grid of audion VT4, its other end and photoelectrical coupler IC First input end is connected.The negative pole of polar capacitor C7 colelctor electrode with audion VT5 after resistance R15 is connected, its positive pole It is connected with the first input end of photoelectrical coupler IC.After N electrode resistance R16 of diode D8, the negative pole with polar capacitor C7 is connected Connect, its P pole is connected with the non-same polarity of transformator T secondary inductance coil L3.

The negative pole of polar capacitor C9 is connected with the non-same polarity of transformator T secondary inductance coil L3, its positive pole and transformation The Same Name of Ends of device T secondary inductance coil L3 is connected.The positive pole of polar capacitor C8 after resistance R18 with the transmitting of audion VT5 Pole is connected, its negative pole Same Name of Ends with transformator T secondary inductance coil L3 after resistance R6 is connected.The P pole of diode D7 Be connected with the drain electrode of field effect transistor MOS2, its N pole sequentially after resistance R7 and critesistor RT with transformator T secondary inductance line The Same Name of Ends of circle L3 is connected.

The source ground of described field effect transistor MOS, its grid are connected with second input of photoelectrical coupler IC；Described The grounded collector of audion VT4, its emitter stage are connected with the base stage of audion VT5；The first of described photoelectrical coupler IC Outfan is connected with matrix current adjustment circuit, its second outfan is connected with the negative pole of polar capacitor C4.

Further, described matrix current adjustment circuit is by audion VT1, audion VT2, resistance R7, resistance R8, resistance R9, resistance R10, polar capacitor C2, polar capacitor C3, diode D1, and diode D2 form.

During connection, the positive pole of polar capacitor C2 VREF pin with control chip U after resistance R7 is connected, its negative pole with The base stage of audion VT1 is connected.The P pole of diode D1 is connected with the CT pin of control chip U, its N pole is after resistance R8 It is connected with the base stage of audion VT1.The negative pole of polar capacitor C3 be connected with the colelctor electrode of audion VT2 after ground connection, its just Pole is connected with the GND pin of control chip U.The N pole of diode D2 after resistance R10 with the first of photoelectrical coupler IC the output End is connected, its P pole emitter stage with audion VT2 after resistance R9 is connected.The grounded collector of described audion VT1, Its emitter stage is 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 Pipe 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, the source of its other end and field effect transistor MOS1 Pole is connected.The negative pole of polar capacitor C11 is connected with the grid of field effect transistor MOS3, the outfan of its positive pole and amplifier P1 It is connected.The drain electrode with field effect transistor MOS3 after resistance R23 of the N pole of diode D9 is connected, its P pole after resistance R20 with The negative pole of amplifier P1 is connected.The drain electrode with field effect transistor MOS3 after resistance R22 of the negative pole of polar capacitor C10 is connected, Its positive pole P pole with diode D9 after resistance R21 is connected.

Meanwhile, be connected with the negative pole of amplifier P2 after the negative pole resistance R26 of polar capacitor C12, its positive pole is through resistance R24 It is connected with the source electrode of field effect transistor MOS3 afterwards.The P pole of diode D11 is connected with the negative pole of polar capacitor C12, its N pole warp After resistance R27, the source electrode with field effect transistor MOS4 is connected.The N pole of diode D10 is connected with the positive pole of amplifier P2, its P Pole source electrode with field effect transistor MOS3 after resistance R25 is connected.The positive pole of polar capacitor C13 is connected with the negative pole of amplifier P2 Connect, its negative pole ground connection after resistance R29.One end of resistance R28 is connected with the outfan of amplifier P2, its other end is imitated with field Should the grid of pipe MOS4 be connected.

The grounded drain of described field effect transistor MOS3；The drain electrode of described field effect transistor MOS4 is as current peak constant circuit Outfan and be connected with overvoltage crowbar.

During operation, the high current ripple in the high voltage pulse in voltage and electric current can effectively be carried out by this utility model Adjust, make the dynamic held stationary of voltage and current, ensure that this utility model can export stable voltage and current, and Ensure that high molecular leather sprays paint the stability of drying temperature of dehydrator, is effectively prevented macromolecule shoe material leather surface and goes out Now deform or fall paint.

Meanwhile, the instantaneous high current that electric current produces can be adjusted by this utility model, makes instantaneous high current weaken, and makes The current intensity held stationary state of output electric current, thus improve the stability of the electric current of this utility model output.This practicality Novel control chip have employed the integrated chip of UC3844A and realizes, the stable work in work of this chip, and this chip is with outer simultaneously The intensity of output electric current can be effectively adjusted after combining by the circuit enclosed, thus improves load energy of the present utility model Power.

According to above-described embodiment, can well realize this utility model.

Claims (6)

1. a leather based on current peak constant circuit sprays paint dehydrator Switching Power Supply, it is characterised in that main by controlling Chip U, transformator T, field effect transistor MOS1, negative pole is connected with the grid of field effect transistor MOS1, positive pole and control chip U Polar capacitor C5, the N pole that OUT pin is connected drain electrode with field effect transistor MOS1 after resistance R13 is connected, P pole and control The diode D3 that the IFB pin of chip U is connected, positive pole COMP pin with control chip U after resistance R12 is connected, negative The polar capacitor C4 that pole is connected with the VFB pin of control chip U after resistance R11, respectively with the VCC pin of control chip U The overvoltage crowbar that limit former with transformator T is connected, is serially connected between overvoltage crowbar and the source electrode of field effect transistor MOS1 Current peak constant circuit, the matrix current adjustment circuit being connected with control chip U, and respectively with matrix current adjustment circuit and change The photoelectric coupling switch circuit composition that depressor T secondary inductance coil L3 is connected；The negative pole of described polar capacitor C4 and light thermocouple Combination switch circuit be connected after ground connection；The source electrode of described field effect transistor MOS1 is connected with overvoltage crowbar, it drains and becomes The non-same polarity of depressor T former limit inductance 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, its Be characterised by, described current peak constant circuit by amplifier P1, amplifier P2, field effect transistor MOS3, field effect transistor MOS4, one The resistance R19 that end is connected with the positive pole of amplifier P1, the other end is connected with the source electrode of field effect transistor MOS1, negative pole is imitated with field Should polar capacitor C11, the N pole that grid is connected, positive pole is connected with the outfan of amplifier P1 of pipe MOS3 after resistance R23 Be connected with the drain electrode of field effect transistor MOS3, diode D9 that P pole negative pole with amplifier P1 after resistance R20 is connected, negative Pole drain electrode with field effect transistor MOS3 after resistance R22 is connected, positive pole P pole with diode D9 after resistance R21 is connected Polar capacitor C10, after negative pole resistance R26 the negative pole with amplifier P2 be connected, positive pole after resistance R24 with field effect transistor Polar capacitor C12, the P pole that the source electrode of MOS3 is connected is connected with the negative pole of polar capacitor C12, N pole after resistance R27 with field Diode D11, the N pole that the source electrode of effect pipe MOS4 is connected is connected with the positive pole of amplifier P2, P pole after resistance R25 with The diode D10 that the source electrode of field effect transistor MOS3 is connected, 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 grid of the other end and field effect transistor MOS4 The resistance R28 composition that pole is connected；The grounded drain of described field effect transistor MOS3；The drain electrode of described field effect transistor MOS4 is as electricity Flow the outfan of peak value constant circuit and be 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, its Be characterised by, described overvoltage crowbar by audion VT3, positive pole sequentially after resistance R1 and resistance R2 with audion VT3's Base stage is connected, the non-same polarity of limit former with transformator T, polar capacitor C1, the N pole inductance coil L1 of minus earth is connected, P The Same Name of Ends phase of limit former with transformator T, Zener diode D6, the P pole inductance coil L2 that pole is connected with the base stage of audion VT3 Connect, diode D5 that N pole is sequentially connected through resistance R4 negative pole with polar capacitor C1 after resistance R3, one end and polarity electricity Holding the inductance L4 that negative pole is connected, the other end is connected of C1 with the VCC pin of control chip U, positive pole is sent out with audion VT3's The polar capacitor C6 that emitter-base bandgap grading is connected, the Same Name of Ends of limit inductance coil L1 former with transformator T is connected after negative pole resistance R5, and Two poles that Same Name of Ends is connected, P pole is connected with the drain electrode of field effect transistor MOS4 of limit former with transformator T, N pole inductance coil L1 Pipe D4 forms；The grounded collector of described audion VT3；The positive pole of described polar capacitor C1 and negative pole are collectively forming overvoltage protection The input of circuit.

A kind of leather based on current peak constant circuit the most according to claim 3 sprays paint dehydrator Switching Power Supply, its It is characterised by, described photoelectric coupling switch electricity routing optocoupler IC, audion VT4, audion VT5, field effect transistor MOS2, The resistance R14 that one end is connected with the grid of audion VT4, the other end is connected with the first input end of photoelectrical coupler IC, Negative pole colelctor electrode with audion VT5 after resistance R15 is connected, positive pole is connected with the first input end of photoelectrical coupler IC Polar capacitor C7, N electrode resistance R16 after be connected with the negative pole of polar capacitor C7, P pole and transformator T secondary inductance coil L3 The diode D8 that is connected of non-same polarity, 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 after resistance R18 with audion VT5's The polar capacitor C8 that emitter stage is connected, negative pole Same Name of Ends with transformator T secondary inductance coil L3 after resistance R6 is connected, And P pole is connected with the drain electrode of field effect transistor MOS2, N pole sequentially after resistance R7 and critesistor RT with transformator T secondary The diode D7 composition that the Same Name of Ends of inductance coil L3 is connected；The source ground of described field effect transistor MOS, its grid and photoelectricity Second input of bonder IC is connected；The grounded collector of described audion VT4, its emitter stage and the base of audion VT5 Pole is connected；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.

A kind of leather based on current peak constant circuit the most according to claim 4 sprays paint dehydrator Switching Power Supply, its Be characterised by, described matrix current adjustment circuit by audion VT1, audion VT2, positive pole after resistance R7 with control chip U's Polar capacitor C2, the P pole that VREF pin is connected, negative pole is connected with the base stage of audion VT1 and the CT pin of control chip U Be connected, diode D1 that N pole base stage with audion VT1 after resistance R8 is connected, the colelctor electrode of negative pole and audion VT2 The polar capacitor C3 that after being connected, ground connection, positive pole are connected with the GND pin of control chip U, and N pole after resistance R10 with The diode that first outfan of photoelectrical coupler IC 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.

A kind of leather based on current peak constant circuit the most according to claim 5 sprays paint dehydrator Switching Power Supply, its Being characterised by, described control chip U is the integrated chip of UC3844A.