CN104093108B - Two-way electromagnetic firecracker - Google Patents
Two-way electromagnetic firecracker Download PDFInfo
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- CN104093108B CN104093108B CN201410335920.9A CN201410335920A CN104093108B CN 104093108 B CN104093108 B CN 104093108B CN 201410335920 A CN201410335920 A CN 201410335920A CN 104093108 B CN104093108 B CN 104093108B
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Abstract
A kind of two-way electromagnetic firecracker，It is to export explosive sound simulation signal consistent with true firecrackers acoustic wave form using MP3 player，Through high-low pressure matched high-power audio amplifier，The power signal of output more than 300W is to integral double-frequency road speaker，Integral double-frequency road speaker is provided with surely middle piston type woofer in public magnetic conductive disk circumferential upper end，In the middle part of public magnetic conductive disk, lower end is provided with compression high pitch loudspeaker，The voice coil loudspeaker voice coil of the present invention is larger，Directly can be connected with the big power amplification output circuit matching of high pressure，Save the output transformator of heaviness，Save audio amplifier and big horn，Power is very big，Volume but very little，Sound equipment decibel value exceedes general audio amplifier or horn type loudspeaker，And high bass is taken into account，The present invention is a kind of frequency response width、Power is big、Efficiency high、Small volume、It is lightweight、The Novel sound box equipment of low cost，The present invention makes every effort to make its acoustics be close to tradition firecrackers，Festive air can be built to reach，And the purpose without air pollution，Actively promote environmental conservation.
Description
Technical field
The present invention relates to a kind of electronic firecracker, exactly, is a kind of easy high-power audio equipment, it is especially a kind of
It is expected to replace the two-way electromagnetic firecracker of traditional firecrackers.
Background technology
Due to traditional firecrackers severe contamination air, especially during the annual Spring Festival, every household is set off firecracker, and the smoke of gunpowder is more
Whole city space is overflow, severe haze weather is caused, serious harm health of people, therefore, required according to modern civilization, You Renhu
Sigh replacing traditional firecrackers with electronic firecracker, but existing electronic firecracker each side compared with traditional firecrackers have a long way to go, especially
The earsplitting explosive sound of traditional firecrackers, it is that explosive moment quick-fried exoergic amount is very big, electronic firecracker with its cannot compared with because
Required for people is exactly fierce world-shaking acoustics, so the electronic firecracker of prior art could not replace biography all the time
The firecrackers of system.
At present, in prior art electronic firecracker species is a lot, and its articulation type has speaker playing-type, controlled pneumatic
Formula, high voltage discharge type etc., the pattern of various electronic firecrackers, outward appearance, decoration, function, style, design are various ingenious, but mainly
Defect be that pronunciation energy is compared too little, do not reach the effect of sensation, if increasing power, cost certainly will be increased, for example, selected
Valuable high-power audio equipment is not only expensive and heavy inconvenient.
A kind of publication number is CN103239865A, and title is the application for a patent for invention of " electromagnetic firecracker ", is my premise
Go out a kind of new technical scheme, it is one kind by surely middle pistonic loudspeaker, high-power audio frequency amplifier, MP3 player
The simple high-power audio equipment of composition, although its articulation power is very big, has a disadvantage in that：1. because of " electromagnetic firecracker "
In fixed, the voice coil loudspeaker voice coil and sound film of pistonic loudspeaker is weighed greatly, so the frequency response of speaker sounding is in low-frequency range volume
Greatly, high band sound equipment is little, and the sound for sending truly intactly can not be reappeared according to the frequency spectrum of firecrackers sound.2. high-power audio frequency
Between the front stage of amplifier, connection is direct coupling circuit, and connecting between front stage is affected by unidirectional current, makes whole aircraft reliability poor,
Final stage power amplifier is complementary pipe common-collector circuit, its less stable.
The content of the invention
In order to overcome the electronic firecracker of prior art and the defect of " electromagnetic firecracker ", the present invention to disclose a kind of improved double frequency
Road electromagnetic firecracker, it is really that a kind of frequency response width, power is big, the Novel sound box equipment of small volume, lightweight, low cost, this
It is bright to make every effort to make its acoustics be close to tradition firecrackers, festive air can be built to reach, and the purpose without air pollution, actively
Promote environmental conservation.
In order to realize the purpose of the present invention, it is especially desirable to create a frequency response width, high-power speaker and it is stable, can
By, cheap high-power audio amplifier, therefore, further improved technical scheme of the present invention is raised one's voice by integral double-frequency road
Device, high-low pressure matched high-power audio amplifier and MP3 player composition, which is structurally characterized in that：Described integral double-frequency
Road speaker is combined into one by surely middle piston type woofer and compression high pitch loudspeaker, and integral double-frequency road is raised one's voice
Device is provided with public magnetic conductive disk, and described fixed middle piston type woofer is mounted in public magnetic conductive disk circumferential upper end, fixed middle piston type
Woofer is provided with outer magnetic guiding cycle, and in the middle part of public magnetic conductive disk, upper end is provided with interior magnetic guiding cycle, and interior magnetic guiding cycle is welded on public magnetic conduction
In the middle part of disk, it is concentric with outer magnetic guiding cycle, and outer magnetic guiding cycle inner circle lower end is equipped with the ring permanent magnet that magnetic pole is radial direction, ring permanent magnet
It is neodymium iron boron kicker magnet that overall or some cuboids are assembled into, by A, B glue between outer magnetic guiding cycle and ring permanent magnet
Bonding connection, public magnetic conductive disk is cylindrical to be formed with round platform rank, and round platform rank close-fitting is installed in outer magnetic guiding cycle inner circle lower end, under outer magnetic guiding cycle
End is provided with connection side, connects the nut bore that side is provided with three deciles, and the round platform rank of public magnetic conductive disk is provided with the spiral shell of three deciles
Hole, is aligned with connection three, side nut bore respectively, public magnetic conductive disk and outer magnetic guiding cycle be fastenedly connected into by three screws it is whole
Body, constitutes the polarity side with ring permanent magnet being made up of public magnetic conductive disk, outer magnetic guiding cycle, ring permanent magnet, interior magnetic guiding cycle
To the woofer bogie of the radial magnetic circuit for mark, ring permanent magnet inner circle and the interior magnetic conduction of woofer bogie
Large circle high-intensity magnetic field is formed between circle is cylindrical drives air gap, large circle high-intensity magnetic field to drive in air gap and be provided with surely middle piston type sound film,
Described fixed middle piston type sound film is provided with planar diaphragm, and planar diaphragm is manufactured from thin fiber, planar diaphragm center
Installing hole is provided with, installing hole is cylindrical to be provided with wave ring side, and planar diaphragm is cylindrical to be provided with mounting groove, and big voice coil loudspeaker voice coil is provided with mounting groove,
Big voice coil loudspeaker voice coil is injection A, B glue in the big coil of the cylindrical lower end enamel-covered wire coiling in speech coil framework, mounting groove, by planar diaphragm
Integral with the adhesion of speech coil framework upper end, speech coil framework upper end is provided with left and right fairlead, and the two ends of big coil are provided with left lead
With right lead, left and right lead is pierced into from left and right fairlead respectively, is fastened with glue below planar diaphragm on diameter line, then is drawn
To the left and right lower end in wave ring side that installing hole is cylindrical, described big voice coil suspension is arranged on large circle high-intensity magnetic field and drives in air gap,
Make cutting magnetic line movement, the parameter of big coil is：Impedance 16-30 Ω, power 300-500W.
Described compression high pitch loudspeaker is mounted in lower end in the middle part of public magnetic conductive disk, and compression high pitch loudspeaker is provided with magnetic pole
For the annular permanent magnet of axial direction, annular permanent magnet is overall Ferrite Material manufacture, is provided with big hole in the middle part of public magnetic conductive disk,
Annular permanent magnet lower end is provided with magnetic conduction disk, and magnetic conduction disk upper end is conducting magnetic column, and conducting magnetic column upper end is magnetic conduction roundel, described
Connected by A, B glue bond between public magnetic conductive disk, annular permanent magnet, magnetic conduction disk, constituted by public magnetic conductive disk, ring-like permanent magnetism
The height of the axial magnetic circuit of body, magnetic conduction disk, conducting magnetic column, the polar orientation with annular permanent magnet of magnetic conduction roundel composition to indicate
Sound speaker drive frame, high pitch loudspeaker bogie close-fitting install aluminum shell, the big hole and magnetic conduction of high pitch loudspeaker bogie
Small circle ring high-intensity magnetic field is formed between roundel drives air gap, small circle ring high-intensity magnetic field to drive in air gap and be provided with deckle convex type sound film,
Described deckle convex type sound film selects the existing loudspeaker sound film in market, and its parameter is:Impedance 8-16 Ω, power 100-
300W, it is provided with dome-type diaphragm, and little voice coil loudspeaker voice coil is provided with dome-type diaphragm inner circle step, and it is strong that little voice coil suspension is arranged on small circle ring
In field drives air gap, make cutting magnetic line movement, the big hole upper end disc in the middle part of the public magnetic conductive disk, with deckle convex type sound
Rubber washer is set between film, and deckle convex type sound film upper end is provided with acoustic pressure formula end cap, and acoustic pressure formula end cap upper end is provided with printing electricity
Road plate washer, printed circuit board (PCB) packing ring circumference are provided with some circuit bond pads, and acoustic pressure formula end cap circumference is provided with the spiral shell of 6 deciles
Nail, printed circuit board (PCB) packing ring circumference and deckle convex type sound film circumference and rubber washer circumference, are again provided with 6 deciles
Screw hole, in the middle part of public magnetic conductive disk, circumference is provided with the nut bore of 6 deciles, by 6 screws by printed circuit board (PCB) packing ring, acoustic pressure
Formula end cap, deckle convex type sound film and rubber washer are fastened on circumference in the middle part of public magnetic conductive disk, set in described acoustic pressure formula end cap
There is dome-type acoustic pressure chamber, it is shrouding disc that dome-type acoustic pressure chamber is cylindrical, and it is lid side that shrouding disc is cylindrical, and shrouding disc lower end is provided with presses platform circle, half
Ball-type acoustic pressure intracavity circle upper end is provided with helix tube type union joint, and helix tube type union joint inner circle is playback mouth.
Described deckle convex type sound film with the difference of surely middle piston type sound film is：The circumference of deckle convex type sound film
Side, vibration sounding in the stationary state, depending in piston type sound film be the vibration sounding in the state of the center of circle is fixed, described determines
The center mounting hole of middle piston type sound film is arranged on the screwed pipe union joint step of acoustic pressure formula end cap upper end, and screwed pipe union joint upper end sets
There is little horn, little horn lower end is provided with attaching nut, and surely middle piston type sound film is fastened on screwed pipe union joint step by attaching nut
On, surely middle piston type sound film is fixed on into radial magnetic circuit bogie upper end center position.
The left and right end of described little voice coil loudspeaker voice coil is provided with left and right lead, and the left and right end of acoustic pressure formula end cap is provided with fairlead, printing electricity
Road plate washer circumference is provided with left and right fairlead, and the left and right lead of little voice coil loudspeaker voice coil is through the left and right fairlead of acoustic pressure formula end cap and printing electricity
The left and right fairlead of road plate washer, is respectively welded on the little voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring, described
The left and right lead of big voice coil loudspeaker voice coil be respectively welded on the big voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring, little voice coil loudspeaker voice coil
It is to be connected in series with circuit of the big voice coil loudspeaker voice coil on pcb pad lap welding point, little voice coil loudspeaker voice coil is identical with the conductive phase place of big voice coil loudspeaker voice coil,
Guarantee surely middle piston type sound film and deckle convex type sound film synchronized oscillation, socket aperture, socket aperture are provided with public magnetic conductive disk right
The power input socket of integral double-frequency road speaker, circuit of the little voice coil loudspeaker voice coil with big voice coil loudspeaker voice coil on printed circuit board (PCB) packing ring are provided with inside
After series connection, lead-out wire connection power input socket upper end.
The high-tension circuit and low-voltage circuit of described high-low pressure matched high-power audio amplifier is mutually isolated, independence
, the signal coupling between front stage is matching, and it is provided with cabinet, and circuit board is provided with cabinet, and circuit board is left
Side is equipped with independent low tension switch voltage-stabilized power supply circuit and independent low pressure small power amplifier circuit, and circuit board right is equipped with separate high pressure direct current
Power circuit and the big power amplifier of separate high pressure, circuit board right-hand member be equipped with power output plug cord, power output plug cord insert
Head is connected in the power input socket of integral double-frequency road speaker, power plug wire of the circuit board left end equipped with 220V, electricity
Road plate upper end is provided with input plug signal, and in cabinet, the left side is provided with radiator fan, and top is provided with audion radiator,
Lower audion radiator is provided with below.
Described MP3 player, from the existing simple MP3 player in market, MP3 player upper end is provided with usb signal
Input plug, lower end are provided with signal output socket, and centre is provided with start button, MP3 player signal output part socket and audio frequency
Amplifier signal input plug connects.
It is mutually isolated between described independent low tension switch voltage-stabilized power supply circuit and separate high pressure DC power supply circuit, it is independent
DC circuit between low pressure small power amplifier circuit and the big power amplifier of separate high pressure is mutually isolated, and 220V alternating current power supplys are through low pressure
Type of Switch Stabilivolt Source Circuit module and low-voltage capacitance filtering output 15V low-voltage dc power supplies, positive source and negative pole connect respectively
The power end and ground terminal of small power amplifier integrated package, the signal input part of small power amplifier integrated package are grounded through input capacitance, input resistance,
MP3 player signal output part connection input resistance two ends, the signal output part of small power amplifier circuit are arrived all the way through promoting electric capacity
Driving transformer primary coil, another road is through feedback resistance, the signal negative feedback pole of feedback capacity to small power amplifier circuit, feedback
Resistance connection shunt resistance ground connection, driving transformer primary coil connection weakening resistance, weakening electric capacity；Described radiator fan
From the tube-axial fan of direct current 12V, 0.1A, fan electromotor line is connected on the both positive and negative polarity of 15V low-voltage dc power supplies, 220V's
Alternating current power supply exports the high pressure of 300V through high-voltage filtering capacitor and fuse through 4 diode composition bridge rectifiers
DC source, the big power amplifier of the separate high pressure is the grounded base Single-end output of upper audion and the connection of lower audion
Class B push-pull power amplification circuit, upper and lower two secondary coils of driving transformer connect respectively upper and lower audion emitter stage and
Base stage, high-voltage power cathode connect transistor collector, and high voltage power supply negative pole connects lower transistor base, and upper transistor base is with
Transistor collector connects output capacitance, through power output plug cord, exports the fixed middle living of integral double-frequency road speaker
It is in the load of the series connection of plug woofer and compression high pitch loudspeaker, in parallel on fixed middle piston type woofer voice coil loudspeaker voice coil
Frequency dividing electric capacity, frequency dividing inductance in parallel on compression high pitch loudspeaker voice coil loudspeaker voice coil.
In described high-low pressure matched high-power audio amplifier circuit, selected electronic devices and components parameter difference
It is:：The parameter of the low tension switch voltage-stabilized power supply circuit module is：Input ac voltage 220V, electric current 500MA, output direct current
Voltage 15V, electric current 2A, small power amplifier integrated package model：TDA2003, upper and lower audion is from voltage 500V, electric current 10A
NPN type silicon triode, the radiator surface area on upper and lower audion are more than 10 square centimeters, and driving transformer selects section
The silicon steel plate core of 10mm × 12mm, its 90 circle of primary coil ,+25 circle of 25 circle of secondary coil, 4 diodes select voltage
The bridge rectifier of 300V, electric current 10A, output capacitance and high-voltage filtering capacitor are from voltage 400V, the electrolysis electricity of 100 μ F of capacity
Hold, promote electric capacity and low-voltage filter electric capacity to select voltage 50V, the electrochemical capacitor of 1000 μ F of capacity, input capacitance and feedback capacity
From voltage 50V, the electrochemical capacitor of 10 μ F of capacity, the resistance of input resistance is 100 Ω, and the resistance of feedback resistance is 2K Ω, point
The resistance of leakage resistance is 50 Ω, and the resistance of weakening resistance is 10 Ω, and the capacity of weakening electric capacity is 0.1 μ F.
The whole machine operation principle of described two-way electromagnetic firecracker is：First MP3 player is write on computers with very
The consistent explosive sound simulation signal of real firecrackers acoustic wave form, controls the output of its play signal by MP3 player start button, passes through
Input capacitance couples a signal to the input of TDA2003, the amplification signal of TDA2003 outputs, through promoting electric capacity to promotion
Transformer, upper and lower secondary coil is respectively to the promotion letter that the emitter stage and base stage output phase of upper and lower audion are contrary
Number, the class B push-pull power amplification circuit of the grounded base Single-end output of upper and lower audion connection is voltage amplifier, does not amplify
Electric current, has very deep negative feedback, can be effectively improved distorted signals, stable performance, the high-low pressure amplifying circuit Jing between front stage
The coupling of driving transformer is crossed, not only makes the emitter stage of upper and lower audion obtain the driving signal of the low-voltage, high-current of matching, and
And between independent front stage, there is no direct current electrical connection (including independent high-low voltage power source), makes whole aircraft reliability big
To improve, the quiescent current of upper and lower audion is zero, is operated in efficient on off state, is conducive to power amplifier steady under elevated pressure conditions
Fixed to work, high-power signal is through output capacitance, output to integral double-frequency road speaker.
The invention has the beneficial effects as follows：1. the loudspeaker voice coil of prior art is less, and power and impedance can not be done greatly, this
Bright voice coil loudspeaker voice coil is larger, and power and impedance can be done greatly, directly can be connected with the big power amplification output circuit matching of high pressure, save heaviness
Output transformator.2. the pronunciation device in existing stereo set is audio amplifier or horn type loudspeaker, their power
Not very big, volume is but very big, and integral double-frequency road speaker saves audio amplifier and big horn, and power is very big, volume but very little, sound equipment
Decibel value exceedes general audio amplifier or horn type loudspeaker, and high bass is taken into account.3. high-power in high-low pressure matched
In audio-frequency amplifier circuit, low tension switch voltage-stabilized power supply circuit and high voltage direct current source circuit are mutually isolated, and no direct current is electrically connected
Relation is connect, low pressure small power amplifier circuit and the big power amplifier of high pressure are also to be mutually isolated, no direct current electrical connection is not only improved
Reliability, protection power tube, and personal accident electric shock is avoided, due to driving transformer efficient coupling, before power amplifier
Matched well is obtained between rear class, driving transformer secondary coil makes the DC circuit phase of the emitter stage and base stage of upper and lower audion
When in short circuit, not only making the big power amplifier power of high pressure big, efficiency high, and also it is reliable and stable.4. high-voltage DC power supply is directly from 220V
Alternating current power supply rectification is obtained, and makes that complete machine structure is simple, small volume, low cost.
Description of the drawings
Fig. 1 is two-way electromagnetic firecracker overall structure diagram
Fig. 2 is matched high-power audio frequency amplifier electrical schematic diagram
Specific embodiment
It is described further below in conjunction with the accompanying drawings.
In the two-way electromagnetic firecracker overall structure diagram shown in Fig. 1, described integral double-frequency road speaker is
It is combined into one by surely middle piston type woofer and compression high pitch loudspeaker, integral double-frequency road speaker is provided with public
Magnetic conductive disk 1, described fixed middle piston type woofer are mounted in public magnetic conductive disk circumferential upper end, fixed middle piston type woofer
Outer magnetic guiding cycle 3 is provided with, upper end is provided with interior magnetic guiding cycle 2 in the middle part of public magnetic conductive disk, interior magnetic guiding cycle is welded in the middle part of public magnetic conductive disk, it
Concentric with outer magnetic guiding cycle, equipped with the ring permanent magnet 4 that magnetic pole is radial direction, ring permanent magnet is overall for outer magnetic guiding cycle inner circle lower end
Or the neodymium iron boron kicker magnet that some cuboids are assembled into, connected by A, B glue bond between outer magnetic guiding cycle and ring permanent magnet,
Public magnetic conductive disk is cylindrical to be formed with round platform rank, and round platform rank close-fitting is installed in outer magnetic guiding cycle inner circle lower end, and outer magnetic guiding cycle lower end is provided with company
Edge fit 5, connects the nut bore that side is provided with three deciles, and the round platform rank of public magnetic conductive disk is provided with the screw of three deciles, respectively
It is aligned with connection three, side nut bore, public magnetic conductive disk is that integral, composition is fastenedly connected by three screws 6 with outer magnetic guiding cycle
The polar orientation with ring permanent magnet being made up of public magnetic conductive disk, outer magnetic guiding cycle, ring permanent magnet, interior magnetic guiding cycle is as mark
Radial magnetic circuit woofer bogie, the ring permanent magnet inner circle of woofer bogie it is cylindrical with interior magnetic guiding cycle it
Between form large circle high-intensity magnetic field and drive air gap, large circle high-intensity magnetic field to drive in air gap and be provided with surely middle piston type sound film, described determines
Middle piston type sound film is provided with planar diaphragm 7, and planar diaphragm is manufactured from thin fiber, and planar diaphragm center is provided with installation
Hole, installing hole is cylindrical to be provided with wave ring side 8, and planar diaphragm is cylindrical to be provided with mounting groove 9, and big voice coil loudspeaker voice coil, big voice coil loudspeaker voice coil are provided with mounting groove
The big coil 11 of the cylindrical lower end enamel-covered wire coiling in speech coil framework 10, injection A, B glue in mounting groove, by planar diaphragm with
The adhesion of speech coil framework upper end is integral, and speech coil framework upper end is provided with left and right fairlead, and the two ends of big coil are provided with left lead 12
With right lead 13, left and right lead pierces into from left and right fairlead respectively, fastens with glue below planar diaphragm on diameter line, then
The cylindrical left and right lower end in wave ring side of installing hole is guided to, described big voice coil suspension is arranged on large circle high-intensity magnetic field and drives air gap
It is interior, make cutting magnetic line movement, the parameter of big coil is：Impedance 16-30 Ω, power 300-500W.
Described compression high pitch loudspeaker is mounted in lower end in the middle part of public magnetic conductive disk, and compression high pitch loudspeaker is provided with magnetic pole
For the annular permanent magnet 14 of axial direction, annular permanent magnet is overall Ferrite Material manufacture, is provided with great circle in the middle part of public magnetic conductive disk
Hole, annular permanent magnet lower end are provided with magnetic conduction disk 15, and magnetic conduction disk upper end is conducting magnetic column 16, and conducting magnetic column upper end is magnetic conduction roundel
17, described public magnetic conductive disk, connected by A, B glue bond between annular permanent magnet, magnetic conduction disk, constituted by public magnetic conduction
Disk, annular permanent magnet, magnetic conduction disk, conducting magnetic column, the polar orientation with annular permanent magnet of magnetic conduction roundel composition are as mark
The high pitch loudspeaker bogie of axial magnetic circuit, high pitch loudspeaker bogie close-fitting install aluminum shell 20, high pitch loudspeaker bogie
Big hole and magnetic conduction roundel between form small circle ring high-intensity magnetic field and drive air gap, small circle ring high-intensity magnetic field drive be provided with air gap it is fixed
Side convex type sound film, from the existing loudspeaker sound film in market, its parameter is described deckle convex type sound film:Impedance 8-16
Ω, power 100-300W, it is provided with dome-type diaphragm 18, and little voice coil loudspeaker voice coil 19 is provided with dome-type diaphragm inner circle step, and little voice coil loudspeaker voice coil hangs
It is floating to drive in air gap installed in small circle ring high-intensity magnetic field, make cutting magnetic line movement, the big hole upper end circle in the middle part of the public magnetic conductive disk
Rubber washer 21 is set between face and deckle convex type sound film, and deckle convex type sound film upper end is provided with acoustic pressure formula end cap 22, acoustic pressure
Formula end cap upper end is provided with printed circuit board (PCB) packing ring 23, and printed circuit board (PCB) packing ring circumference is provided with some circuit bond pads 24, acoustic pressure
Formula end cap circumference is provided with the screw hole 25 of 6 deciles, printed circuit board (PCB) packing ring circumference and deckle convex type sound film circumference and rubber
Rubber gasket circumference, is again provided with the screw hole of 6 deciles, and in the middle part of public magnetic conductive disk, circumference is provided with the nut bore of 6 deciles, by 6
Printed circuit board (PCB) packing ring, acoustic pressure formula end cap, deckle convex type sound film and rubber washer are fastened on public magnetic conduction by individual screw 26
Dome-type acoustic pressure chamber 27 is provided with acoustic pressure formula end cap in the middle part of disk described in circumference , it is shrouding disc that dome-type acoustic pressure chamber is cylindrical, outside shrouding disc
Circle is lid side, and shrouding disc lower end is provided with presses platform circle 28, and dome-type acoustic pressure intracavity circle upper end is provided with helix tube type union joint 29, helix tube type
Union joint inner circle is playback mouth.
Described deckle convex type sound film with the difference of surely middle piston type sound film is, the circumference of deckle convex type sound film
Side, vibration sounding in the stationary state, depending in piston type sound film be the vibration sounding in the state of the center of circle is fixed, described determines
The center mounting hole of middle piston type sound film, on acoustic pressure formula end cap upper end screwed pipe union joint step 30, on screwed pipe union joint
End is provided with little horn 31, and little horn lower end is provided with attaching nut, and surely middle piston type sound film is fastened on screwed pipe connection by attaching nut
On caster bed rank, surely middle piston type sound film is fixed on into radial magnetic circuit bogie upper end center position, the left and right of described little voice coil loudspeaker voice coil
End is provided with left and right lead 32, and the left and right end of acoustic pressure formula end cap is provided with fairlead, and printed circuit board (PCB) packing ring circumference is provided with left and right lead
Hole, the left and right lead of little voice coil loudspeaker voice coil pass through the left and right fairlead of acoustic pressure formula end cap and the left and right fairlead of printed circuit board (PCB) packing ring, weld respectively
Connect on the little voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring, the left and right lead of described big voice coil loudspeaker voice coil is respectively welded
On the big voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring, little voice coil loudspeaker voice coil is with big voice coil loudspeaker voice coil in pcb pad lap welding
Circuit on point is to be connected in series, and little voice coil loudspeaker voice coil is identical with the conductive phase place of big voice coil loudspeaker voice coil, it is ensured that in fixed, piston type sound film is convex with deckle
Formula sound film synchronized oscillation is played, and socket aperture is provided with public magnetic conductive disk right, integral double-frequency road speaker is provided with socket aperture
Power input socket 33, with big voice coil loudspeaker voice coil after the circuit connected in series on printed circuit board (PCB) packing ring, lead-out wire connection power is defeated for little voice coil loudspeaker voice coil
Enter socket upper end.
The high-tension circuit and low-voltage circuit of described high-low pressure matched high-power audio amplifier is mutually isolated, independence
, the signal coupling between front stage is matching, and it is provided with cabinet 34, and circuit board 35, circuit are provided with cabinet
Plate left is equipped with independent low tension switch voltage-stabilized power supply circuit 36 and independent low pressure small power amplifier circuit 37, and circuit board right is equipped with independent
High voltage direct current source circuit 38 and the big power amplifier 39 of separate high pressure, circuit board right-hand member are equipped with power output plug cord 40, power
The plug of output plug line is connected in the power input socket of integral double-frequency road speaker, and circuit board left end is equipped with 220V's
Power plug wire 41, circuit board upper end are provided with input plug signal 42, and in cabinet, the left side is provided with radiator fan 43, top
Audion radiator 44 is provided with, lower audion radiator 45 is provided with below.
Described MP3 player, from the existing simple MP3 player in market, MP3 player upper end is provided with usb signal
Input plug 46, lower end are provided with signal output socket 47, and centre is provided with start button 48, MP3 player signal output part socket
It is connected with audio frequency amplifier input plug signal.
In the matched high-power audio frequency amplifier electrical schematic diagram shown in Fig. 2, described independent low tension switch is steady
It is mutually isolated between piezoelectricity source circuit and separate high pressure DC power supply circuit, independent low pressure small power amplifier circuit and the big work(of separate high pressure
DC circuit between electric discharge road is mutually isolated, and 220V alternating current power supplys are through low tension switch voltage-stabilized power supply circuit module 49 and low pressure
Capacitor filtering 50 exports 15V low-voltage dc power supplies, positive source and negative pole connect respectively the power end of small power amplifier integrated package 51 and
Ground terminal, the signal input part of small power amplifier integrated package are grounded through input capacitance 52, input resistance 53, MP3 player signal output
End connection input resistance two ends, the signal output part of small power amplifier circuit through promoting electric capacity 54, all the way at the beginning of driving transformer 55
Level coil, another road is through feedback resistance 56, the signal negative feedback pole of feedback capacity 57 to small power amplifier circuit, feedback resistance connection
Shunt resistance 58 is grounded, driving transformer primary coil connection weakening resistance 59, weakening electric capacity 60, described radiator fan choosing
With the tube-axial fan of direct current 12V, 0.1A, fan electromotor line is connected on the both positive and negative polarity of 15V low-voltage dc power supplies, the friendship of 220V
Stream power supply exports 300V's through 4 composition bridge rectifiers of diode 61 through high-voltage filtering capacitor 62 and fuse 63
High-voltage DC power supply, the big power amplifier of the separate high pressure is the grounded base list of upper audion 64 and the connection of lower audion 65
The class B push-pull power amplification circuit of end output, upper and lower two secondary coils of driving transformer connect upper and lower audion respectively
Emitter stage and base stage, high-voltage power cathode connect transistor collector, and high voltage power supply negative pole connects lower transistor base, upper audion
Base stage is connected output capacitance 66 with lower transistor collector, and through power output plug cord, output is raised one's voice to integral double-frequency road
In the load of the series connection of the fixed middle piston type woofer and compression high pitch loudspeaker of device, fixed middle piston type woofer
Frequency dividing electric capacity 67 in parallel on voice coil loudspeaker voice coil, frequency dividing inductance 68 in parallel on compression high pitch loudspeaker voice coil loudspeaker voice coil.
In described high-low pressure matched high-power audio amplifier circuit, selected electronic devices and components parameter difference
It is：The parameter of the low tension switch voltage-stabilized power supply circuit module is：Input ac voltage 220V, electric current 500MA, output unidirectional current
Pressure 15V, electric current 2A, small power amplifier integrated package model：TDA2003, upper and lower audion select voltage 500V, the NPN of electric current 10A
Type silicon triode, the radiator surface area on upper and lower audion be more than 10 square centimeters, driving transformer from section 10mm ×
The silicon steel plate core of 12mm, its 90 circle of primary coil ,+25 circle of 25 circle of secondary coil, 4 diodes select voltage 300V, electric current
The bridge rectifier of 10A, output capacitance and high-voltage filtering capacitor, from voltage 400V, the electrochemical capacitor of 100 μ F of capacity, promote
Electric capacity and low-voltage filter electric capacity select voltage 50V, the electrochemical capacitor of 1000 μ F of capacity, input capacitance and feedback capacity to select voltage
The electrochemical capacitor of 50V, 10 μ F of capacity, the resistance of input resistance is 100 Ω, and the resistance of feedback resistance is 2K Ω, shunt resistance
Resistance is 50 Ω, and the resistance of weakening resistance is 10 Ω, and the capacity of weakening electric capacity is 0.1 μ F.
Claims (3)
1. a kind of two-way electromagnetic firecracker, by integral double-frequency road speaker, high-low pressure matched high-power audio amplifier and
MP3 player is constituted, and be it is characterized in that:Described integral double-frequency road speaker is by surely middle piston type woofer and compression
Formula high pitch loudspeaker is combined into one, and integral double-frequency road speaker is provided with public magnetic conductive disk (1), and described fixed middle piston type is low
Sound speaker is mounted in public magnetic conductive disk circumferential upper end, and fixed middle piston type woofer is provided with outer magnetic guiding cycle (3), public magnetic conductive disk
Middle part upper end is provided with interior magnetic guiding cycle (2), and interior magnetic guiding cycle is welded in the middle part of public magnetic conductive disk, and it is concentric with outer magnetic guiding cycle, outer magnetic conduction
Equipped with ring permanent magnet (4) that magnetic pole is radial direction, ring permanent magnet is that overall or some cuboids are spelled for circle inner circle lower end
The neodymium iron boron kicker magnet dressed up, is connected by A, B glue bond between outer magnetic guiding cycle and ring permanent magnet, and public magnetic conductive disk is cylindrical to be formed with
Round platform rank, round platform rank close-fitting are installed in outer magnetic guiding cycle inner circle lower end, and outer magnetic guiding cycle lower end is provided with connection side (5), and connection side is provided with
The nut bore of three deciles, the round platform rank of public magnetic conductive disk are provided with the screw of three deciles, respectively be connected three, side nut
Hole is aligned, and public magnetic conductive disk and outer magnetic guiding cycle are to be fastenedly connected integral by three screws (6), are constituted by public magnetic conduction
Disk, outer magnetic guiding cycle, ring permanent magnet, the polar orientation with ring permanent magnet of interior magnetic guiding cycle composition are as the radial magnetic circuit of mark
Woofer bogie, forms large circle between the ring permanent magnet inner circle and interior magnetic guiding cycle of woofer bogie are cylindrical
High-intensity magnetic field drives air gap, large circle high-intensity magnetic field to drive, described fixed middle piston type sound film
Planar diaphragm (7) is provided with, planar diaphragm is manufactured from thin fiber, and planar diaphragm center is provided with installing hole, installing hole
Cylindrical to be provided with wave ring side (8), planar diaphragm is cylindrical to be provided with mounting groove (9), and big voice coil loudspeaker voice coil is provided with mounting groove, and big voice coil loudspeaker voice coil is in sound
Injection A, B glue in big coil (11) of the cylindrical lower end of ring framework (10) with enamel-covered wire coiling, mounting groove, by planar diaphragm and sound
The adhesion of ring framework upper end is integral, and speech coil framework upper end is provided with left and right fairlead, and the two ends of big coil are provided with left lead (12)
With right lead (13), left and right lead pierces into from left and right fairlead respectively, fastens with glue below planar diaphragm on diameter line,
The cylindrical left and right lower end in wave ring side of installing hole is re-introduced to, described big voice coil suspension is arranged on large circle high-intensity magnetic field drive gas
In gap, make cutting magnetic line movement, the parameter of big coil is：Impedance 16-30 Ω, power 300-500W；Described compression is high
Sound speaker is mounted in lower end in the middle part of public magnetic conductive disk, and it is axial annular permanent magnet that compression high pitch loudspeaker is provided with magnetic pole
(14), annular permanent magnet is overall Ferrite Material manufacture, and big hole, annular permanent magnet lower end are provided with the middle part of public magnetic conductive disk
It is provided with magnetic conduction disk (15), magnetic conduction disk upper end is conducting magnetic column (16), conducting magnetic column upper end is magnetic conduction roundel (17), described public affairs
Connected by A, B glue bond between magnetic conductive disk, annular permanent magnet, magnetic conduction disk altogether, constituted by public magnetic conductive disk, ring-like permanent magnetism
The height of the axial magnetic circuit of body, magnetic conduction disk, conducting magnetic column, the polar orientation with annular permanent magnet of magnetic conduction roundel composition to indicate
Sound speaker drive frame, high pitch loudspeaker bogie close-fitting install aluminum shell (20), the big hole of high pitch loudspeaker bogie with
Small circle ring high-intensity magnetic field is formed between magnetic conduction roundel drives air gap, small circle ring high-intensity magnetic field to drive in air gap and be provided with deckle convex type sound
Film, from the existing loudspeaker sound film in market, its parameter is described deckle convex type sound film:Impedance 8-16 Ω, power
100-300W, it is provided with dome-type diaphragm (18), and little voice coil loudspeaker voice coil (19), little voice coil suspension peace are provided with dome-type diaphragm inner circle step
Be mounted in small circle ring high-intensity magnetic field to drive in air gap, make cutting magnetic line movement, in the middle part of the public magnetic conductive disk big hole upper end disc with
Rubber washer (21) is set between deckle convex type sound film, and deckle convex type sound film upper end is provided with acoustic pressure formula end cap (22), acoustic pressure
Formula end cap upper end is provided with printed circuit board (PCB) packing ring (23), and printed circuit board (PCB) packing ring circumference is provided with some circuit bond pads (24),
Acoustic pressure formula end cap circumference is provided with the screw hole (25) of 6 deciles, printed circuit board (PCB) packing ring circumference and deckle convex type sound film circle
Week and rubber washer circumference, are again provided with the screw hole of 6 deciles, and in the middle part of public magnetic conductive disk, circumference is provided with the nut of 6 deciles
Printed circuit board (PCB) packing ring, acoustic pressure formula end cap, deckle convex type sound film and rubber washer are fastened on by hole by 6 screws (26)
Circumference in the middle part of public magnetic conductive disk, is provided with dome-type acoustic pressure chamber (27) in described acoustic pressure formula end cap, and dome-type acoustic pressure chamber is cylindrical to be
Shrouding disc, it is lid side that shrouding disc is cylindrical, and shrouding disc lower end is provided with presses platform circle (28), and dome-type acoustic pressure intracavity circle upper end is provided with helix tube type company
Joint (29), helix tube type union joint inner circle are playback mouths, the difference of described deckle convex type sound film with surely middle piston type sound film
It is：The circumferential edge of deckle convex type sound film, vibration sounding in the stationary state, depending in piston type sound film be to fix in the center of circle
In the state of vibration sounding；The center mounting hole of described fixed middle piston type sound film, connects installed in acoustic pressure formula end cap upper end screwed pipe
On joint step (30), screwed pipe union joint upper end is provided with little horn (31), and little horn lower end is provided with attaching nut, and attaching nut will
In fixed, piston type sound film is fastened on screwed pipe union joint step, and surely middle piston type sound film is fixed on radial magnetic circuit bogie upper end
Center, the left and right end of described little voice coil loudspeaker voice coil are provided with left and right lead (32), and the left and right end of acoustic pressure formula end cap is provided with fairlead,
Printed circuit board (PCB) packing ring circumference is provided with left and right fairlead, the left and right lead of little voice coil loudspeaker voice coil through the left and right fairlead of acoustic pressure formula end cap and
The left and right fairlead of printed circuit board (PCB) packing ring, is respectively welded the little voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring
On, the left and right lead of described big voice coil loudspeaker voice coil is respectively welded the big voice coil loudspeaker voice coil circuit bond pads at the left and right end of printed circuit board (PCB) packing ring
On, circuit of the little voice coil loudspeaker voice coil with big voice coil loudspeaker voice coil on pcb pad lap welding point is to be connected in series, the conduction of little voice coil loudspeaker voice coil and big voice coil loudspeaker voice coil
Phase place is identical, it is ensured that piston type sound film and deckle convex type sound film synchronized oscillation in fixed, is provided with socket in public magnetic conductive disk right
Hole, is provided with the power input socket (33) of integral double-frequency road speaker in socket aperture, little voice coil loudspeaker voice coil is with big voice coil loudspeaker voice coil in printed circuit
After circuit connected in series on plate washer, lead-out wire connection power input socket upper end, described high-low pressure matched high-power audio
The high-tension circuit of amplifier and low-voltage circuit be mutually isolated, independent, and the signal coupling between front stage is matching, and it sets
There is cabinet (34), in cabinet, be provided with circuit board (35), circuit board left is equipped with independent low tension switch regulated power supply electricity
Road (36) and independent low pressure small power amplifier circuit (37), circuit board right are equipped with separate high pressure DC power supply circuit (38) and independent height
Press big power amplifier (39), circuit board right-hand member that power output plug cord (40) is housed, the plug of power output plug cord is connected to
In the power input socket of integral double-frequency road speaker, power plug wire (41) of the circuit board left end equipped with 220V, circuit board
Upper end is provided with input plug signal (42), and in cabinet, the left side is provided with radiator fan (43), and top is provided with audion and dissipates
Hot device (44), is provided with lower audion radiator (45) below, and described MP3 player is played from the existing simple MP3 in market
Device, MP3 player upper end are provided with usb signal input plug (46), and lower end is provided with signal output socket (47), and centre is provided with startup
Button (48), MP3 player signal output part socket are connected with audio frequency amplifier input plug signal.
2. two-way electromagnetic firecracker according to claim 1, is characterized in that:Described independent low tension switch regulated power supply electricity
Be mutually isolated between road and separate high pressure DC power supply circuit, independent low pressure small power amplifier circuit and the big power amplifier of separate high pressure it
Between DC circuit be mutually isolated, 220V alternating current power supplys are filtered through low tension switch voltage-stabilized power supply circuit module (49) and low-voltage capacitance
Ripple (50) output 15V low-voltage dc power supplies, positive source and negative pole connect the power end and ground of small power amplifier integrated package (51) respectively
End, the signal input part of small power amplifier integrated package are grounded through input capacitance (52), input resistance (53), and MP3 player signal is defeated
Go out end connection input resistance two ends, the signal output part of small power amplifier circuit is passed through and promotes electric capacity (54), all the way to driving transformer
(55) primary coil, another road through feedback resistance (56), the signal negative feedback pole of feedback capacity (57) to small power amplifier circuit, instead
Feed resistance connection shunt resistance (58) ground connection, driving transformer primary coil connection weakening resistance (59), weakening electric capacity (60)；Institute
Tube-axial fan of the radiator fan stated from direct current 12V, 0.1A, fan electromotor line are connected to 15V low-voltage dc power supplies
On both positive and negative polarity, the alternating current power supply of 220V constitutes bridge rectifiers through 4 diodes (61), through high-voltage filtering capacitor (62)
Export the high-voltage DC power supply of 300V with fuse (63), the big power amplifier of the separate high pressure, be upper audion (64) and under
The class B push-pull power amplification circuit of the grounded base Single-end output that audion (65) connects, driving transformer are upper and lower two times
Level coil connects the emitter stage and base stage of upper and lower audion respectively, and high-voltage power cathode connects transistor collector, high voltage power supply
Negative pole connects lower transistor base, and upper transistor base is connected output capacitance (66) with lower transistor collector, through power output
Plug cord, exports fixed middle piston type woofer and the series connection of compression high pitch loudspeaker of integral double-frequency road speaker
Load on, it is fixed in frequency dividing electric capacity (67) in parallel on piston type woofer voice coil loudspeaker voice coil, on compression high pitch loudspeaker voice coil loudspeaker voice coil simultaneously
Connection frequency dividing inductance (68).
3. high-low pressure matched high-power audio amplifier according to claim 2, is characterized in that：In described high-low pressure
In matched high-power audio amplifier circuit, selected electronic devices and components parameter is respectively：The low tension switch voltage stabilizing electricity
The parameter of source circuit module is：Input ac voltage 220V, electric current 500MA, output DC voltage 15V, electric current 2A；Small power amplifier collection
In bulk model：TDA2003；Upper and lower audion selects voltage 500V, the NPN type silicon triode of electric current 10A, upper and lower audion
On radiator surface area be more than 10 square centimeters；Silicon steel plate core of the driving transformer from section 10mm × 12mm, at the beginning of which
Level 90 circle of coil ,+25 circle of 25 circle of secondary coil；4 diodes select voltage 300V, the bridge rectifier of electric current 10A；Output electricity
Hold and high-voltage filtering capacitor, from voltage 400V, the electrochemical capacitor of 100 μ F of capacity, promote electric capacity and low-voltage filter electric capacity to select
The electrochemical capacitor of voltage 50V, 1000 μ F of capacity, input capacitance and feedback capacity are from voltage 50V, the electrolysis electricity of 10 μ F of capacity
Hold, the resistance of input resistance is 100 Ω, and the resistance of feedback resistance is 2K Ω, and the resistance of shunt resistance is 50 Ω, weakening resistance
Resistance is 10 Ω, and the capacity of weakening electric capacity is 0.1 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335920.9A CN104093108B (en) | 2014-07-07 | 2014-07-07 | Two-way electromagnetic firecracker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335920.9A CN104093108B (en) | 2014-07-07 | 2014-07-07 | Two-way electromagnetic firecracker |
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| Publication Number | Publication Date |
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| CN104093108A CN104093108A (en) | 2014-10-08 |
| CN104093108B true CN104093108B (en) | 2017-03-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180080485A (en) * | 2017-01-04 | 2018-07-12 | 유수진 | Slim type high-resolution electro-magnetic speaker of bridge edge method |
| CN111312480B (en) * | 2019-12-24 | 2021-07-02 | 遂川东辰电子科技有限公司 | High-frequency transformer |
| CN111228825B (en) * | 2020-01-17 | 2021-12-03 | 江西旭光真空电器有限公司 | Double-sound type acousto-optic simulation electric firecracker |
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| CN103239865A (en) * | 2013-05-24 | 2013-08-14 | 朱幕松 | Electromagnetic firecracker |
| KR101313448B1 (en) * | 2012-10-05 | 2013-10-01 | 홍진표 | Electronic firecracker heavy sound generator for cannons |
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| JPH08241447A (en) * | 1995-03-06 | 1996-09-17 | Sharp Corp | Lot device |
| US6647124B1 (en) * | 2002-05-06 | 2003-11-11 | Meiloon Industrial Co., Ltd. | Loudspeaker with coaxial magnetic circuit for high-pitch sound and low-pitch sound |
| CN202565459U (en) * | 2012-05-04 | 2012-11-28 | 李植扬 | Coaxial loudspeaker |
| KR101313448B1 (en) * | 2012-10-05 | 2013-10-01 | 홍진표 | Electronic firecracker heavy sound generator for cannons |
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| CN104093108A (en) | 2014-10-08 |
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