CN113853098A

CN113853098A - Novel power amplifier and manufacturing process

Info

Publication number: CN113853098A
Application number: CN202111046978.8A
Authority: CN
Inventors: 张海涛; 张泽洲; 许育森; 谢善谊; 刘雨非
Original assignee: Shenzhen Xinbaite Microelectronics Co ltd
Current assignee: Shenzhen Xinbaite Microelectronics Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-12-28
Anticipated expiration: 2041-09-07

Abstract

The invention discloses a novel power amplifier, which comprises a shell and a plurality of sub-power devices arranged at the inner bottom of the shell, wherein each sub-power device is arranged in parallel, a rotating shaft is arranged at the inner bottom in the middle of the shell, a plurality of shifting rods are rotatably arranged on the outer wall of the rotating shaft, a sliding rheostat is arranged between the outer walls, far away from the rotating shaft, of two adjacent shifting rods, each sliding rheostat comprises a resistor and an adjusting piece, the resistors and the adjusting pieces are respectively fixed on the outer walls of the two shifting rods, and each sliding rheostat is correspondingly and electrically connected with each sub-power device through a circuit component. The invention achieves the effect of dynamically adjusting the power among the sub-power devices by matching the structures, and adjusts the corresponding heat dissipation environment by adjusting the power distribution of the sub-power devices on the basis of ensuring that the average power is not changed, thereby improving the performance of the whole power amplifier.

Description

Novel power amplifier and manufacturing process

Technical Field

The invention relates to the technical field of circuit design, in particular to a novel power amplifier and a manufacturing process thereof.

Background

Modern communication systems are continuously upgraded, and power amplifiers are required to be used in wireless communication systems such as 2G to 3G,3G to 4G, 4G to 5G, WiFi and the like, and the requirements on the power amplifiers are higher and higher. The thermal effect of the power amplifier, due to the amplification of the power signal, can always seriously affect the performance of the amplifier.

However, because the power amplifiers need to be physically arranged, if the amount of heat generated by each sub-power amplifier is the same, the amount of heat generated by each sub-power amplifier is higher when a part of the sub-power amplifier is close to an external heat source or other power devices, so that the heat is concentrated locally, and the efficiency of the overall power amplifier is reduced.

Disclosure of Invention

The invention aims to provide a novel power amplifier and a manufacturing process, which adjust the power distribution of a sub-power device through a corresponding heat dissipation environment, further improve the performance of the whole power amplifier and solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel power amplifier, includes the shell and arranges a plurality of sub-power wares of installing the bottom in the shell, every be parallelly connected setting between the sub-power ware, the pivot is installed to the interior bottom in the middle of the shell, and the outer wall of pivot rotates and installs a plurality of driving levers, and two are adjacent be provided with the slide rheostat between the outer wall that the pivot was kept away from to the driving lever.

The sliding rheostat comprises a resistor and adjusting pieces, the resistor and the adjusting pieces are respectively fixed on the outer walls of the two shifting rods, each sliding rheostat is electrically connected with each sub-power device correspondingly through a circuit assembly, one end of the resistor, which is close to the fixed end of each shifting rod, is connected with a lead, and when the shifting rods rotate and unfold, the adjusting pieces are driven to move, so that the resistance of the resistors is increased.

The automatic unfolding device is characterized by further comprising an adjusting mechanism, wherein the adjusting mechanism can enable the plurality of shifting rods to be unfolded simultaneously, and the included angle alpha between every two adjacent shifting rods along the unfolding direction is gradually increased.

Preferably, adjustment mechanism includes the connecting rod, the connecting rod articulates first from left to right the outer wall of driving lever, and first from left to right the interior bottom fixed connection of driving lever and shell, remove first every of driving lever the outer wall of driving lever all articulates there is the ejector pin, and every the ejector pin with the junction of driving lever shortens from left to right in proper order apart from the distance of pivot, back one from left to right the ejector pin articulates in proper order in adjacent preceding outer wall in the middle of the ejector pin, and from left to right every the length of ejector pin shortens gradually, the inner wall of shell is seted up slottedly, and the inslot slidable mounting stirring piece, the one end that the driving lever was kept away from to the connecting rod and the longest the one end that the driving lever was kept away from to the ejector pin articulates the outer wall that the stirring piece jointly.

Preferably, the outer wall of the outer shell, which is close to the sub-power device, is fixed with a plurality of heat dissipation fins, the outer wall of the outer shell, which is located above the heat dissipation fins, is provided with a long groove, the inner wall of the long groove is slidably provided with a sliding plate which can move along the inner wall of the long groove, the top of the sliding plate, which extends out of the outer shell, is provided with a through hole, a rotating rod is rotatably arranged in the through hole, the bottom end of the rotating rod is provided with fan blades, the top end of the rotating rod is provided with a driven wheel, the diameter of the driven wheel can be reduced along with the rise of temperature, when the diameter of the driven wheel is reduced to a preset value, the driving wheel can control a transmission mechanism through a circuit to enable the sliding plate to move along the inner wall of the long groove, and the driving assembly is used for driving the driven wheel to rotate.

Preferably, the driven wheel comprises a plurality of piston tubes installed on the outer wall of the rotating rod shaft, the plurality of piston tubes are distributed in a circumferential array, a piston rod is installed on the inner wall of each piston tube in a sliding mode, a memory alloy is installed between the outer wall, close to the rotating rod, of each piston tube and the inner wall of each piston tube, when the memory alloy is heated, the piston tubes can contract, an elastic ring is installed at one end, far away from the memory alloy, of each piston rod, the elastic ring is made of elastic materials, a first switch is installed on the inner wall of one of the piston tubes, and when the piston rod contracts into the piston tube and contacts the first switch, the first switch can control the transmission mechanism through a circuit to enable the sliding plate to move along the elongated slot.

Preferably, the transmission mechanism comprises two chain wheels which are rotatably installed on the inner walls of the two sides of the shell through bearing seats, the two chain wheels are in transmission connection through chains, the chains are fixedly connected with the sliding plate through connecting blocks, a first motor is installed on the inner wall of the shell, one end of an output shaft of the first motor is coaxially and fixedly installed with one of the chain wheels, and when the first switch is triggered, the output shaft of the first motor is controlled by a circuit to rotate alternately in the forward direction and the reverse direction.

Preferably, the drive assembly includes the action wheel, the spout has been seted up near the top of dwang to the sliding plate, the inner wall slidable mounting of spout has the slider, the action wheel passes through the axis of rotation and rotates the top of installing at the slider, the spout is connected with the spring near being connected with between the outer wall of dwang and the inner wall of spout, the bottom of slider is fixed with the fixed plate, the second motor is installed to the outer wall of fixed plate, the one end and the installation of second motor output shaft the coaxial fixed mounting of axis of rotation of action wheel, be connected through belt transmission between action wheel and the elastic ring.

Preferably, one end of the resistor, which is far away from the fixed end of the shift lever, is connected with a lead, second switches are mounted on the inner walls of two sides of the long groove, the two second switches form a single-pole double-throw switch, when the sliding plate contacts one of the second switches, the resistor is close to and communicated with the lead at the fixed end of the shift lever, and when the sliding plate contacts the other second switch, the resistor is far away from and communicated with the lead at the fixed end of the shift lever.

The utility model provides a be applied to novel power amplifier's circuit, holistic power amplifier has n to be the little power amplifier PA1, PA2, …, the PAn of parallel arrangement and constitutes, and the input stage of PA1, PA2, …, PAn connects at the power amplifier input end jointly, and the input stage of PA1, PA2, …, PAn connects at the power amplifier output end jointly, every PA all is connected with adjustable Rb and Cb.

A manufacturing process applied to a novel power amplifier comprises the following steps:

s1: the sub-power devices are sequentially arranged on the inner wall of the shell, the circuit board is also arranged at the bottom of the shell, the sub-power devices are connected in parallel through electric wires, and the sub-power devices can be detachably mounted through bolts and the like.

S2: then a rotating shaft is arranged at the inner bottom of the shell, a plurality of deflector rods are sequentially and rotatably arranged on the outer wall of the rotating shaft, one deflector rod close to the edge is fixed with the inner bottom of the shell through bolts and the like, and then a slide rheostat is arranged between two adjacent deflector rods, so that the resistor and the adjusting sheet are respectively arranged on two adjacent deflector rods through the bolts.

S3: then, a lead is welded at one end of the resistor fixed with the deflector rod through a welder, and a lead is welded at one end of the adjusting sheet fixed with the deflector rod through the welder.

S4: two wires are respectively connected to corresponding wires on the circuit board, two wires of each slide rheostat are also welded on the wires on the circuit board, and the slide rheostat is connected with the sub-power device in series.

S5: then an adjusting mechanism for adjusting the deflector rod is installed.

S6: and then installing a switch for controlling the on and off of the switch.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the invention adjusts the power distribution of the sub-power devices by matching the structures and enabling the sub-power devices with low power to be close to external heat sources or other power devices or enabling external heat dissipation structures to be close to the sub-power devices with high power through corresponding heat dissipation environments, thereby improving the performance of the whole power amplifier.

Secondly, the heat dissipation speed of the heat dissipation fins is increased by the cooperation of the structures and the air blowing of the heat dissipation fins, so that the heat dissipation speed of the sub-power device is increased, the temperature of the device is reduced, and the efficiency and the reliability are improved.

Thirdly, the invention achieves an effect of dynamically adjusting the power among the sub-power devices through the matching of the structures, and allocates the corresponding heat dissipation environment through adjusting the power distribution of the sub-power devices on the basis of ensuring that the average power is not changed, thereby improving the performance of the whole power amplifier.

Drawings

FIG. 1 is a front view of the housing of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 1 at B;

FIG. 4 is a schematic cross-sectional view taken along line F-F of FIG. 1 in accordance with the present invention;

FIG. 5 is a front semi-sectional view of the present invention;

FIG. 6 is an enlarged view of FIG. 4 at C according to the present invention;

FIG. 7 is an enlarged view of FIG. 6 at E according to the present invention;

FIG. 8 is an enlarged view of FIG. 5 at D in accordance with the present invention;

FIG. 9 is a schematic circuit diagram according to the present invention;

FIG. 10 is a schematic circuit diagram corresponding to a second switch according to the present invention;

FIG. 11 is a schematic structural diagram of a second embodiment of an adjustment mechanism of the present invention;

fig. 12 is a schematic structural diagram of a third embodiment of the adjusting mechanism of the present invention.

In the figure: 1. a housing; 2. a heat dissipating fin; 3. a long groove; 4. a sliding plate; 5. a partition plate; 6. a sprocket; 7. a chain; 8. a shifting block; 9. a deflector rod; 10. a top rod; 11. a connecting rod; 12. a resistor; 13. a regulating sheet; 14. a chute; 15. a slider; 16. a driving wheel; 17. a spring; 18. rotating the rod; 19. a memory alloy; 20. an elastic ring; 21. a piston rod; 22. a piston tube; 23. a first switch; 24. connecting blocks; 25. a second switch; 26. a fan blade; 27. a first motor; 28. a fixing plate; 29. a second motor; 30. and a sub-power device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 12, the present invention provides a technical solution:

the first embodiment is as follows: the utility model provides a novel power amplifier, includes that shell 1 and range install a plurality of sub-power ware 30 of bottom in shell 1, is parallelly connected setting between every sub-power ware 30, and the pivot is installed to the interior bottom in the middle of shell 1, and the outer wall of pivot rotates and installs a plurality of driving levers 9, and two adjacent driving levers 9 keep away from and be provided with the slide rheostat between the outer wall of pivot.

The sliding rheostat comprises a resistor 12 and an adjusting sheet 13, the resistor 12 and the adjusting sheet 13 are respectively fixed on the outer walls of the two shift levers 9, each sliding rheostat is correspondingly electrically connected with each sub-power device 30 through a circuit assembly, and one end of the resistor 12 close to the fixed end of each shift lever 9 is connected with a lead, and when the shift levers 9 rotate and unfold, the adjusting sheets 13 are driven to move, so that the resistance of the resistor 12 is increased.

The automatic unfolding device further comprises an adjusting mechanism, wherein the adjusting mechanism can enable the plurality of shifting rods 9 to be unfolded simultaneously, and the included angle alpha between every two adjacent shifting rods 9 in the unfolding direction is gradually increased.

Each sub-power device 30 is started through a control circuit, then the plurality of shift levers 9 are unfolded simultaneously through the adjusting mechanism, and the included angle alpha between the adjacent shift levers 9 is gradually increased along with the unfolding of the shift levers 9, so that the resistance of the resistor 12 from left to right has an effect of gradually increasing, at the moment, the power of each sub-power device 30 is gradually reduced from left to right, the heat dissipation of the sub-power device 30 with larger power is higher, otherwise, the heat dissipation of the sub-power device 30 with smaller power is lower, the heat dissipation degrees of the sub-power devices 30 with different powers are different, and therefore, the sub-power device 30 with smaller power can be close to an external heat source or other power devices, or an external heat dissipation structure is close to the sub-power device 30 with larger power, and the power distribution of the sub-power device 30 is adjusted through the corresponding heat dissipation environment, thereby improving the performance of the whole power amplifier.

Further, adjustment mechanism includes connecting rod 11, connecting rod 11 articulates at the outer wall of first driving lever 9 from left to right, and the interior bottom fixed connection of first driving lever 9 from left to right and shell 1, the outer wall of every driving lever 9 except that first driving lever 9 all articulates there is ejector pin 10, and every ejector pin 10 shortens from left to right in proper order with the distance of the junction of driving lever 9 apart from the pivot, back ejector pin 10 from left to right articulates the outer wall in the middle of adjacent preceding ejector pin 10 in proper order, and the length of every ejector pin 10 from left to right shortens gradually, shell 1's inner wall is seted up slottedly, and inslot slidable mounting stirring piece 8, the outer wall at stirring piece 8 is articulated jointly to the one end that driving lever 9 was kept away from to connecting rod 11 and the one end that driving lever 9 was kept away from to longest ejector pin 10.

The connecting rod 11 is driven to rotate by adjusting the position of the toggle block 8, the ejector rod 10 is driven to rotate and simultaneously the toggle rod 9 connected with the ejector rod is driven to rotate together, and then the adjusting sheet 13 is adjusted in a sliding mode along the resistor 12, so that the resistance of the resistor 12 is increased;

and because the distance from left to right of the junction of every ejector pin 10 and deflector rod 9 apart from the pivot shortens sequentially, the latter ejector pin 10 from left to right articulates the outer wall in the middle of the adjacent former ejector pin 10 sequentially, and the length of every ejector pin 10 shortens gradually from left to right, so from fixed deflector rod 9, the second deflector rod 9 begins to rotate, deflector rod 9 pivoted angle alpha after can appearing can grow gradually, there is an effect that increases progressively, the result that reflects directly perceived is that the resistance of each resistor 12 from left to right has an effect that increases progressively in proper order, thus make its electric current through resistor 12 reduce, and then reach the purpose of adjusting the power of corresponding sub-power ware 30.

Furthermore, a plurality of heat dissipation fins 2 are fixed on the outer wall of the housing 1 close to the sub-power unit 30, an elongated slot 3 is formed in the outer wall of the housing 1 above the heat dissipation fins 2, a sliding plate 4 capable of moving along the inner wall of the elongated slot 3 is slidably mounted on the inner wall of the elongated slot 3, a through hole is formed in the top of the sliding plate 4 extending out of the housing 1, a rotating rod 18 is rotatably mounted in the through hole, fan blades 26 are mounted at the bottom end of the rotating rod 18, a driven wheel capable of adjusting the diameter is mounted at the top end of the rotating rod 18, the diameter of the driven wheel can be reduced along with the rise of the temperature, when the diameter of the driven wheel is reduced to a preset value, the sliding plate 4 can move along the inner wall of the elongated slot 3 through a circuit control transmission mechanism, and the driving assembly is further included and used for driving the driven wheel to rotate.

The sliding plate 4 is firstly arranged above the sub-power device 30 with high power, then the driven wheel is driven to rotate by the driving component, the driven wheel rotates to drive the fan blade 26 to rotate together through the rotating rod 18, so as to blow air to the radiating fin 2, the radiating speed of the radiating fin 2 is accelerated, and at the moment, the fan blade 26 is arranged above the sub-power device 30 with the maximum power, and the heat emitted by the sub-power device can be radiated, because the sub-power device 30 with the maximum power is in a high-load running state, although the fan blade 26 can accelerate the radiating speed of the radiating fin 2 so as to improve the radiating effect of the sub-power device 30 with the maximum power, the temperature at the position of the sub-power device 30 with the maximum power is slowly increased along with the increase of the service time, when the temperature is increased, the diameter of the driven wheel is reduced, and the corresponding rotating speed of the driven wheel is increased after the diameter of the driven wheel is reduced, and the rotating speed of the fan blades 26 is increased, so that the effect of gradually enhancing the heat dissipation effect of the fan blades 26 along with the slow temperature increase is achieved, and then when the diameter of the driven wheel is reduced to a preset value, the transmission mechanism is controlled by a circuit to enable the sliding plate 4 to move along the inner wall of the long groove 3.

Further, the driven wheel comprises a plurality of piston tubes 22 installed on the outer wall of the shaft of the rotating rod 18, the plurality of piston tubes 22 are distributed in a circumferential array, a piston rod 21 is installed on the inner wall of each piston tube 22 in a sliding mode, memory alloy 19 is installed between the outer wall of the piston rod 21 close to the rotating rod 18 and the inner wall of each piston tube 22, the memory alloy 19 contracts when heated, an elastic ring 20 is installed at one end, away from the memory alloy 19, of each piston rod 21, the elastic ring 20 is made of elastic materials, a first switch 23 is installed on the inner wall of one of the piston tubes 22, and when the piston rod 21 contracts into the piston tube 22 and contacts the first switch 23, the first switch 23 can enable the sliding plate 4 to move along the long groove 3 through a circuit control transmission mechanism.

Further, drive mechanism includes and rotates two sprockets 6 of installing at shell 1 both sides inner wall through the bearing frame, connects through chain 7 transmission between two sprockets 6, passes through connecting block 24 fixed connection between chain 7 and the sliding plate 4, and first motor 27 is installed to the inner wall of shell 1, and the coaxial fixed mounting of one end and one of them sprocket 6 of first motor 27 output shaft can be through the output shaft forward and reverse rotation in turn of circuit control first motor 27 after first switch 23 triggers.

After the first switch 23 is triggered, the output shaft of the first motor 27 is controlled by a circuit to rotate, then the output shaft of the first motor 27 drives the chain wheel 6 to rotate, the other chain wheel 6 is driven to rotate under the transmission action of the chain 7, the chain 7 drives the sliding plate 4 to slide along the inner wall of the elongated slot 3 through the connection action of the connecting block 24 in the transmission process, and after the first switch 23 is triggered, the output shaft of the first motor 27 is controlled by the circuit to alternately rotate in the forward and reverse directions, so that the sliding plate 4 can realize intermittent reciprocating sliding along the inner wall of the elongated slot 3.

Further, the drive assembly includes action wheel 16, sliding plate 4 has been close to the top of dwang 18 and has been seted up spout 14, the inner wall slidable mounting of spout 14 has slider 15, action wheel 16 rotates through the axis of rotation and installs the top at slider 15, be connected with spring 17 between the outer wall that spout 14 is close to dwang 18 and the inner wall of spout 14, slider 15's bottom is fixed with fixed plate 28, second motor 29 is installed to the outer wall of fixed plate 28, the one end of second motor 29 output shaft and the coaxial fixed mounting of axis of rotation of installation action wheel 16, be connected through belt transmission between action wheel 16 and the elastic ring 20.

When the second motor 29 is started, the output shaft of the second motor 29 can drive the driving wheel 16 to rotate, and the elastic ring 20 can be driven to rotate under the transmission action of the belt, so that the internal structure of the belt and the rotating rod 18 are driven to rotate together, and then the fan blades 26 are driven to rotate, and after the diameter of the driven wheel is reduced, the belt between the driving wheel 16 and the elastic ring 20 can be always kept in a tensioning state under the elastic action of the spring 17, so that the transmission speed is ensured.

Further, a lead is connected to one end of the resistor 12, which is far away from the fixed end of the shift lever 9, the second switches 25 are mounted on the inner walls of the two sides of the long slot 3, and the two second switches 25 form a single-pole double-throw switch, when the sliding plate 4 contacts one of the second switches 25, the resistor 12 is close to and communicated with the lead at the fixed end of the shift lever 9, and when the sliding plate 4 contacts the other second switch 25, the resistor 12 is far away from and communicated with the lead at the fixed end of the shift lever 9.

At the beginning, the sliding plate 4 contacts one of the second switches 25, the resistor 12 is connected to the wire at the fixed end of the shift lever 9, at this time, the power of the sub-power device 30 located below the sliding plate 4 is the maximum, then when the sliding plate 4 slides along the inner wall of the elongated slot 3 to drive the fan blade 26 dissipating heat therefrom to move and contacts the other second switch 25, the other second switch 25 will make the resistor 12 far away from the wire at the fixed end of the shift lever 9 to be connected through circuit control, as shown in fig. 10, the power amplifier input 1 at the beginning is changed into the power amplifier input 2, so the most intuitive expression is that the resistance of each resistor 12 is gradually increased from left to right, and when the wire is changed to be connected, the resistance of each resistor 12 is sequentially decreased from left to right, then the sub-power device 30 with the original maximum power is changed into the minimum power, and the sub-power device 30 with the original minimum power is changed into the maximum power, therefore, the position of high heat dissipation can be changed, the effect of dynamically adjusting the power among the sub-power devices 30 is achieved, the average power is guaranteed to be unchanged, the distribution of the power of the sub-power devices 30 is adjusted, the corresponding heat dissipation environments are allocated, the performance of the whole power amplifier is improved, the power among the sub-power devices 30 is adjusted, the situation that the same sub-power device 30 is always in a high-load operation state or a low-load operation state can be avoided, the service life of each sub-power device 30 can be prolonged, and the service life of the whole power amplifier is prolonged.

Example two: as shown in fig. 11, when the middle of the power amplifier is close to an external heat source or other power devices, the plurality of shift levers 9a are arranged in a symmetrical structure, and at this time, the resistors 12a are far away from the wire connected with the fixed ends of the shift levers 9a, so that when the shift block 8a is moved, the shift levers 9a on both sides are opened under the action of the ejector rod 10a and the connecting rod 11a, and the resistance of the resistor 12a farther from the center is also smaller, so that the power of the corresponding sub-power device 30 farther from the center is larger, and the power of the sub-power device 30 closer to the center is smaller, so that the heat dissipation on both sides is higher, and the heat dissipation on the middle is lower, and the distribution of the power of the sub-power device 30 is adjusted, so that the corresponding heat dissipation environment is adjusted, and the performance of the whole power amplifier is improved.

Example three: as shown in fig. 12, when two sides of the power amplifier are close to an external heat source or other power devices, the plurality of shift levers 9b are still arranged in a symmetrical structure, which is different from the second embodiment in that the resistor 12b is close to and communicated with the guide of the fixed end of the shift lever 9b, so that when the shift block 8b is moved, the resistance of the resistor 12a farther from the center is also larger, thereby the power of the corresponding sub-power device 30 farther from the center is smaller, while the power of the sub-power device 30 closer to the center is larger, the heat dissipation at two sides is lower, the heat dissipation at the middle is higher, and the distribution of the power of the sub-power device 30 is adjusted, thereby the corresponding heat dissipation environment is adjusted, and further the performance of the whole power amplifier is improved.

The working principle is as follows: when the novel power amplifier is used, the position of the poking block 8 is moved, so that the connecting rod 11 is driven to rotate, the ejector rod 10 is driven to rotate, the poking rod 9 connected with the ejector rod is driven to rotate, and then the adjusting sheet 13 is adjusted along the resistor 12 in a sliding mode, so that the resistance of the resistor 12 is increased;

and because the distance between the junction of each top rod 10 and the shift lever 9 and the rotating shaft is sequentially shortened from left to right, the next top rod 10 from left to right is sequentially hinged on the outer wall of the middle of the adjacent previous top rod 10, and the length of each top rod 10 from left to right is gradually shortened, the second shift lever 9 starts to rotate from the fixed shift lever 9, the angle alpha of the rotation of the shift lever 9 after the occurrence is gradually increased, and an increasing effect is achieved, and meanwhile, the intuitive result is that the resistance of the resistor 12 from left to right has an effect of gradually increasing gradually, and the lead wire communicated with the corresponding sub-power device 30 is communicated with the lead wire close to the fixed end of the shift lever 9 of the resistor 12, so that the power of the sub-power device 30 at the moment is gradually reduced from left to right, the heat dissipation of the sub-power device 30 with larger power is higher, and vice versa, the heat dissipation of the sub-power device 30 with smaller power is lower, and the heat dissipated is transferred to the heat dissipation fins 2 and dissipated into the air through the heat conduction function of the heat dissipation fins 2, so that the heat dissipation effect is improved;

the average power of all the sub-power units 30 is the power of the middle sub-power unit 30, so that the sub-power unit 30 with the maximum power corresponds to the operation state with high load, and the sub-power unit 30 with the minimum power corresponds to the operation state with low load.

Then the second motor 29 is started, the output shaft of the second motor 29 drives the driving wheel 16 to rotate, the elastic ring 20 is driven to rotate under the transmission action of the belt, so as to drive the internal structure thereof and the rotating rod 18 to rotate together, and further drive the fan blades 26 to rotate, so as to blow air to the heat dissipation fins 2, and accelerate the heat dissipation speed of the heat dissipation fins 2, and at the moment, the fan blades 26 are positioned above the sub-power device 30 with the maximum power, so as to dissipate the heat dissipated by the sub-power device 30, because the sub-power device 30 with the maximum power is in a high-load operation state, although the fan blades 26 can accelerate the heat dissipation speed of the heat dissipation fins 2, so as to improve the heat dissipation effect of the sub-power device 30 with the maximum power, with the increase of the service time, the temperature at the sub-power device 30 with the maximum power also slowly rises, when the temperature rises, the memory alloy 19 shrinks, thereby driving the piston rod 21 to contract inwards the piston tube 22, further achieving the effect of reducing the diameter of the driven wheel, and the belt between the driving wheel 16 and the elastic ring 20 is always kept in a tensioning state under the elastic force of the spring 17, and after the diameter of the driven wheel is reduced, the corresponding rotating speed of the driven wheel is increased, and the rotating speed of the fan blades 26 is also increased, thereby achieving the effect of gradually enhancing the heat dissipation effect of the fan blades 26 along with the slow increase of the temperature;

then when the temperature is raised to a preset value, the piston rod 21 touches the first switch 23, the first switch 23 controls the first motor 27 to start through a circuit, the output shaft of the first motor 27 rotates to drive the chain wheel 6 to rotate, meanwhile, the chain 7 is driven to drive the sliding plate 4 to slide along the inner wall of the long groove 3 under the connecting action of the connecting block 24, so as to drive the fan blades 26 arranged on the long groove 3 to slide together, then when the sliding plate 4 slides to the tail of the long groove 3 and contacts the second switch 25, the second switch 25 controls the resistor 12 to be far away from the wire connected with the fixed end of the shift lever 9 through the circuit, so that the most intuitive expression is that the resistance of each resistor 12 is originally gradually increased from left to right, and when the wire connection is changed, the resistance of each resistor 12 is gradually decreased from left to right, and then the sub-power device 30 with the largest power originally is changed to the smallest power, the original sub-power device 30 with the minimum power is converted into the sub-power device with the maximum power, so that the position with high heat dissipation capacity is converted, the temperature is gradually reduced along with the movement of the fan blade 26, the memory alloy 19 is restored again, the effect of dynamically adjusting the power among the sub-power devices 30 can be achieved, on the basis of ensuring that the average power is unchanged, the corresponding heat dissipation environment is adjusted by adjusting the power distribution of the sub-power devices 30, the performance of the whole power amplifier is improved, and the condition that the same sub-power device 30 is always in a high-load operation state or a low-load operation state can be avoided by adjusting the power among the sub-power devices 30, so that the service life of each sub-power device 30 can be prolonged, and the service life of the whole power amplifier is prolonged.

Example 1: the utility model provides a be applied to novel power amplifier's circuit, holistic power amplifier has n to be the little power amplifier PA1, PA2, …, the PAn of parallel arrangement and constitutes, and the input stage of PA1, PA2, …, PAn connects at the power amplifier input end jointly, and the input stage of PA1, PA2, …, PAn connects at the power amplifier output end jointly, and every PA all is connected with adjustable Rb and Cb.

Due to the self-heating and mutual-heating effects, the sub-power devices 30 corresponding to the PAs closer to the middle position have higher temperatures, so that the PAs at the center position bear more current, and at the moment, by increasing the Rb value of the PAs closer to the center position/decreasing the Cb closer to the center position, the PAs are close to the average distributed current, so that the overall performance is improved.

Example 2: the PA1, PA2, …, PAn may generally be arranged symmetrically, i.e., the circuit arrangements of PA1 and PAn coincide, the circuit arrangements of PA2 and PAn-1 coincide, and so on.

Example 3: if PA1, PA2, PAn are the main heat sources and the ambient temperature is uniform, PA1 and PAn can be made to have higher power and generate relatively high heat.

Example 4: the PA1, PA2, … and PAn can be changed to asymmetric structure according to actual situation, if PA1 is closer to external heat dissipation mechanism, and PAn is closer to other heat source or power device, then the power division of PA1 can be adjusted to be higher than PAn.

Example 5: if the middle PA is closer to the heat sink, the PA split can be adjusted to be higher at the middle than at the edges, PA1 and PAn.

The heat dissipation capacity of the device is improved by changing the power distribution of the PA1, the PA2, the PA … and the PAn, and the power amplifier circuit capable of being distributed unevenly is adopted, so that the heat dissipation capacity of the power amplifier is improved, the temperature of the device is reduced, and the efficiency and the reliability of the power amplifier are improved.

s1: firstly, the plurality of sub-power devices 30 are sequentially arranged and installed on the inner wall of the shell 1, meanwhile, the circuit board is also installed at the bottom of the shell 1, the sub-power devices 30 are connected in parallel through electric wires, and the sub-power devices can be detachably installed through bolts and the like.

S2: then a rotating shaft is arranged at the inner bottom of the shell 1, a plurality of deflector rods 9 are sequentially and rotatably arranged on the outer wall of the rotating shaft, one deflector rod 9 close to the edge is fixed with the inner bottom of the shell 1 through bolts and the like, and then a slide rheostat is arranged between two adjacent deflector rods 9, so that the resistor 12 and the adjusting sheet 13 are respectively arranged on two adjacent deflector rods 9 through bolts.

S3: then, the end of the resistor 12 fixed to the shift lever 9 is wired by a welder, and the end of the adjustment piece 13 fixed to the shift lever 9 is also wired by a welder.

S4: two wires are connected to corresponding wires on the circuit board, and two wires of each slide rheostat are soldered to the wires on the circuit board, and the slide rheostat is connected in series with the sub-power 30.

S5: then, an adjusting mechanism for adjusting the shift lever 9 is installed.

S6: and then installing a switch for controlling the on and off of the switch.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel power amplifier, includes shell (1) and arranges a plurality of sub-power wares (30) of installing the bottom in shell (1), every be parallelly connected setting between sub-power ware (30), its characterized in that: a rotating shaft is mounted at the inner bottom in the middle of the shell (1), a plurality of deflector rods (9) are rotatably mounted on the outer wall of the rotating shaft, and a slide rheostat is arranged between the outer walls, far away from the rotating shaft, of two adjacent deflector rods (9);

the sliding rheostat comprises a resistor (12) and an adjusting sheet (13), the resistor (12) and the adjusting sheet (13) are respectively fixed on the outer walls of the two shift levers (9), each sliding rheostat is correspondingly and electrically connected with each sub-power device (30) through a circuit assembly, the resistor (12) is close to one end of the fixed end of each shift lever (9) to be connected with a lead, and when the shift levers (9) rotate and unfold, the adjusting sheets (13) are driven to move, so that the resistance of the resistor (12) is increased;

the automatic unfolding device is characterized by further comprising an adjusting mechanism, wherein the adjusting mechanism can enable the plurality of shifting rods (9) to be unfolded simultaneously, and the included angle alpha between every two adjacent shifting rods (9) along the unfolding direction is gradually increased.

2. The novel power amplifier of claim 1, wherein: adjustment mechanism includes connecting rod (11), connecting rod (11) articulate the first from left to right the outer wall of driving lever (9), and the first from left to right the interior bottom fixed connection of driving lever (9) and shell (1), remove first every of driving lever (9) the outer wall of driving lever (9) all articulates there is ejector pin (10), and every ejector pin (10) with the distance of the junction of driving lever (9) apart from the pivot shortens from left to right in proper order, the latter one from left to right ejector pin (10) articulate in proper order the adjacent preceding outer wall in the middle of ejector pin (10), and from left to right every the length of ejector pin (10) shortens gradually, the inner wall of shell (1) is seted up slottedly, and sliding installation dials movable block (8) in the groove, connecting rod (11) are kept away from the one end of driving lever (9) and the longest one end that ejector pin (10) kept away from driving lever (9) articulates jointly at shifting block (8) An outer wall.

3. The novel power amplifier of claim 1, wherein: a plurality of radiating fins (2) are fixed on the outer wall of the shell (1) close to the sub-power device (30), an elongated slot (3) is arranged on the outer wall of the shell (1) above the radiating fins (2), a sliding plate (4) which can move along the inner wall of the long groove (3) is arranged on the inner wall of the long groove (3) in a sliding way, the top of the sliding plate (4) extending out of the shell (1) is provided with a through hole, a rotating rod (18) is rotatably arranged in the through hole, the bottom end of the rotating rod (18) is provided with a fan blade (26), the top end of the rotating rod (18) is provided with a driven wheel with adjustable diameter, the diameter of the driven wheel can be reduced along with the rise of temperature, when the diameter of the driven wheel is reduced to a preset value, the transmission mechanism is controlled through a circuit to enable the sliding plate (4) to move along the inner wall of the long groove (3), and the driving assembly is used for driving the driven wheel to rotate.

4. The novel power amplifier of claim 3, wherein: the driven wheel comprises a plurality of piston tubes (22) arranged on the outer wall of the shaft of the rotating rod (18), the plurality of piston tubes (22) are distributed in a circumferential array, the inner wall of each piston tube (22) is provided with a piston rod (21) in a sliding way, a memory alloy (19) is arranged between the outer wall of the piston rod (21) close to the rotating rod (18) and the inner wall of the piston tube (22), when the memory alloy (19) shrinks when being heated, an elastic ring (20) is jointly arranged at one end of each piston rod (21) far away from the memory alloy (19), and the elastic ring (20) is made of elastic material, a first switch (23) is arranged on the inner wall of one piston tube (22), when the piston rod (21) is retracted into the piston tube (22) and contacts the first switch (23), the first switch (23) controls the transmission mechanism through a circuit to enable the sliding plate (4) to move along the long groove (3).

5. The novel power amplifier of claim 4, wherein: drive mechanism includes and rotates two sprocket (6) of installing at shell (1) both sides inner wall through the bearing frame, two connect through chain (7) transmission between sprocket (6), pass through connecting block (24) fixed connection between chain (7) and sliding plate (4), first motor (27) are installed to the inner wall of shell (1), the one end and one of them of first motor (27) output shaft sprocket (6) coaxial fixed mounting works as can pass through the alternate positive and negative rotation of output shaft of the first motor of circuit control (27) after first switch (23) triggers.

6. The novel power amplifier of claim 4, wherein: the driving assembly comprises a driving wheel (16), a sliding groove (14) is formed in the sliding plate (4) close to the top of the rotating rod (18), a sliding block (15) is arranged on the inner wall of the sliding groove (14) in a sliding mode, the driving wheel (16) is installed at the top of the sliding block (15) through rotation of a rotating shaft, a spring (17) is connected between the outer wall of the sliding groove (14) close to the rotating rod (18) and the inner wall of the sliding groove (14), a fixing plate (28) is fixed to the bottom of the sliding block (15), a second motor (29) is installed on the outer wall of the fixing plate (28), one end of an output shaft of the second motor (29) is fixedly installed coaxially with the rotating shaft of the driving wheel (16), and the driving wheel (16) is connected with the elastic ring (20) through belt transmission.

7. The novel power amplifier of claim 3, wherein: the resistor (12) is far away from one end of a fixed end of the shifting rod (9) and is connected with a lead, the inner walls of two sides of the long groove (3) are respectively provided with a second switch (25), the two second switches (25) form a single-pole double-throw switch, when the sliding plate (4) contacts one of the second switches (25), the resistor (12) is close to the lead which is communicated with the fixed end of the shifting rod (9), and when the sliding plate (4) contacts the other second switch (25), the resistor (12) is far away from the lead which is communicated with the fixed end of the shifting rod (9).

8. A circuit applied to the novel power amplifier of claim 1, wherein: the integral power amplifier is composed of n small power amplifiers PA1, PA2, … and Pan which are arranged in parallel, input stages of the PA1, the PA2, the PA … and the Pan are connected to the input end of the power amplifier, input stages of the PA1, the PA2, the PA … and the Pan are connected to the output end of the power amplifier, and each PA is connected with adjustable Rb and Cb.

9. A manufacturing process applied to the novel power amplifier of claim 1, characterized in that: the method comprises the following steps:

s1: firstly, a plurality of sub-power devices (30) are sequentially arranged and installed on the inner wall of a shell (1), meanwhile, a circuit board is also installed at the bottom of the shell (1), the sub-power devices (30) are connected in parallel through electric wires and can be detachably installed in a bolt mode and the like;

s2: then a rotating shaft is arranged at the inner bottom of the shell (1), a plurality of driving levers (9) are sequentially and rotatably arranged on the outer wall of the rotating shaft, one driving lever (9) close to the edge is fixed with the inner bottom of the shell (1) through bolts and the like, and then a sliding rheostat is arranged between two adjacent driving levers (9), so that the resistor (12) and the adjusting sheet (13) are respectively arranged on two adjacent driving levers (9) through bolts;

s3: then welding a lead at one end of the resistor (12) fixed with the deflector rod (9) through a welder, and welding a lead at one end of the adjusting sheet (13) fixed with the deflector rod (9) through the welder;

s4: connecting two wires to corresponding wires on the circuit board respectively, welding the two wires of each slide rheostat on the wires on the circuit board, and connecting the slide rheostat and the sub-power device (30) in series;

s5: then an adjusting mechanism for adjusting the deflector rod (9) is installed;

s6: and then installing a switch for controlling the on and off of the switch.