CN213276403U - Ripple-variable linear power supply - Google Patents
Ripple-variable linear power supply Download PDFInfo
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- CN213276403U CN213276403U CN202022386014.5U CN202022386014U CN213276403U CN 213276403 U CN213276403 U CN 213276403U CN 202022386014 U CN202022386014 U CN 202022386014U CN 213276403 U CN213276403 U CN 213276403U
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Abstract
The utility model relates to a linear power supply technical field specifically discloses a changeable linear power supply of ripple, wherein, include: the power amplifier comprises a ripple generating system, a voltage-adjustable high-precision linear power supply, a power amplifier and a capacitive coupler, wherein the output end of the ripple generating system is connected with the input end of the power amplifier, and the output end of the power amplifier and the voltage-adjustable high-precision linear power supply are both connected with the capacitive coupler; the ripple generating system can generate ripples corresponding to the preset power output value according to the preset power output value; the power amplifier can amplify the power of the ripple; the capacitive coupler can superimpose the ripple wave after power amplification to the output end of the voltage-adjustable high-precision linear power supply. The utility model provides a changeable linear power supply of ripple can use in the circuit sensitive to the power ripple for the ripple of aassessment different frequencies is to the influence of circuit to there is corresponding optimization electrical power generating system.
Description
Technical Field
The utility model relates to a linear power supply technical field especially relates to a changeable linear power supply of ripple.
Background
The linear voltage-stabilized power supply is widely applied to products sensitive to the performance of the power supply, such as mobile phones, small interphones, millimeter wave radars and the like. The performance of linear power supplies directly affects the transmitter performance of these products. The prior art is all working on reducing the ripple of the linear power supply to improve the performance of the product. But as to which frequency ripple has a large influence on the system, a variable ripple linear power supply is required for testing. There is currently no product directed to this function.
Disclosure of Invention
The utility model provides a changeable linear power supply of ripple solves the unable problem of testing linear power supply that exists among the correlation technique.
As an aspect of the present invention, there is provided a ripple variable linear power supply, wherein, include: the power amplifier comprises a ripple generating system, a voltage-adjustable high-precision linear power supply, a power amplifier and a capacitive coupler, wherein the output end of the ripple generating system is connected with the input end of the power amplifier, and the output end of the power amplifier and the voltage-adjustable high-precision linear power supply are both connected with the capacitive coupler;
the ripple generating system can generate ripples corresponding to the preset power output value according to the preset power output value;
the power amplifier can amplify the power of the ripple;
the capacitive coupler can superimpose the ripple wave after power amplification to the output end of the voltage-adjustable high-precision linear power supply.
Further, the ripple generation system includes: the power amplifier comprises a human-computer interaction module and a main control module, wherein the human-computer interaction module is in communication connection with the main control module, the main control module is connected with the input end of the power amplifier, the human-computer interaction module receives ripple parameters corresponding to a power output preset value, and the main control module is used for generating ripples corresponding to the power output preset value according to the ripple parameters.
Further, the ripple generation system includes: the main control module is connected with the power amplifier through the digital-to-analog converter, and the digital-to-analog converter is used for generating the ripple generated by the main control module into a driving digital quantity to generate an analog quantity ripple and outputting the analog quantity ripple to the power amplifier.
Further, the main control module comprises a single chip microcomputer.
Further, the voltage-adjustable high-precision linear power supply comprises a power supply with the model number of E36103B.
Further, the model of the power amplifier includes LT 1970A.
Further, the model of the capacitive coupler includes KC 355.
The utility model provides a changeable linear power supply of ripple, the ripple produces the ripple that the system can produce the ripple that matches with it according to the output value of current high accuracy linear power supply to on overlapping this ripple to the adjustable high accuracy linear power supply of voltage, the changeable linear power supply of this kind of ripple can be used in the circuit sensitive to the power ripple, the ripple that is used for assessing different frequencies is to the influence of circuit, thereby has corresponding optimization electrical power generating system. In addition, the ripple variable linear power supply has the advantages of simple circuit structure and low cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a block diagram of a ripple variable linear power supply provided by the present invention.
Fig. 2 is a block diagram of a specific implementation structure of a ripple variable linear power supply provided by the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a ripple variable linear power supply is provided, and fig. 1 is a block diagram of a ripple variable linear power supply according to an embodiment of the present invention, as shown in fig. 1, including: the power amplifier comprises a ripple generating system 100, a voltage-adjustable high-precision linear power supply 200, a power amplifier 300 and a capacitive coupler 400, wherein the output end of the ripple generating system 100 is connected with the input end of the power amplifier 300, and the output end of the power amplifier 300 and the voltage-adjustable high-precision linear power supply 200 are both connected with the capacitive coupler 400;
the ripple generating system 100 can generate ripples corresponding to a preset power output value according to the preset power output value;
the power amplifier 300 can amplify the power of the ripple;
the capacitive coupler 400 can superimpose the power amplified ripple to the output end of the voltage-adjustable high-precision linear power supply 200.
The embodiment of the utility model provides a changeable linear power supply of ripple, ripple produce the ripple that the system can produce the ripple that matches with it according to the output value of current high accuracy linear power supply to stack this ripple on the adjustable high accuracy linear power supply of voltage, the changeable linear power supply of this kind of ripple can be used in the circuit sensitive to the power ripple, the ripple that is used for assessing different frequencies is to the influence of circuit, thereby has corresponding optimization electrical power generating system. In addition, the ripple variable linear power supply has the advantages of simple circuit structure and low cost.
Specifically, as shown in fig. 2, the ripple generating system 100 includes: the power amplifier comprises a human-computer interaction module 110 and a main control module 120, wherein the human-computer interaction module 110 is in communication connection with the main control module 120, the main control module 120 is connected with the input end of the power amplifier 300, the human-computer interaction module 110 receives a ripple parameter corresponding to a preset power output value, and the main control module 120 is used for generating a ripple corresponding to the preset power output value according to the ripple parameter.
Specifically, the ripple generation system 100 includes: the digital-to-analog converter 130, the main control module 120 is connected to the power amplifier 300 through the digital-to-analog converter 130, and the digital-to-analog converter 130 is configured to generate a driving digital quantity for the ripple generated by the main control module 120 to generate an analog quantity ripple, and output the analog quantity ripple to the power amplifier 300.
In some embodiments, the main control module 120 includes a single chip microcomputer.
In some embodiments, the voltage-tunable high-precision linear power supply 200 comprises a power supply model E36103B.
In some embodiments, the model of the power amplifier 300 includes LT 1970A.
In some embodiments, the model number of the capacitive coupler 400 includes KC 355.
As shown in fig. 2, the embodiment of the present invention provides a ripple variable linear power supply, which is composed of a voltage-adjustable high-precision linear power supply, a ripple generating system, a power amplifier, and a capacitor. The ripple generating system consists of a single chip microcomputer system, a high-precision digital-to-analog converter and a human-computer interaction module, and meanwhile, the ripple system can also be replaced by a signal source. The voltage-adjustable high-precision linear power supply needs extremely low ripple. The man-machine interaction module can use a key to input, and can also use a computer to input to the singlechip system through a communication interface.
The specific working principle is as follows: the high-precision linear power supply is adjusted to a preset value, the ripple frequency and the amplitude value which need to be generated are input through a human-computer interface, and the digital quantity for driving the DAC, namely the digital quantity of the frequency and the amplitude value of the required sine wave is generated through operation after the single chip microcomputer system receives the ripple parameters sent by the human-computer interface. The drive DAC generates the required ripple. After the ripple waves pass through the power amplifier, the ripple waves have certain driving capability, and the power of the power amplifier can be designed according to the tested load condition. The ripple wave after passing through the power amplifier is coupled to a high-precision power supply through a capacitor and finally output.
It should be understood that through the utility model provides a changeable linear power supply of ripple can realize the test to linear power supply's performance, and changeable linear power supply of ripple can output arbitrary power supply ripple frequency and range value in certain extent, simple structure, with low costs moreover.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. A ripple-variable linear power supply, comprising: the power amplifier comprises a ripple generating system, a voltage-adjustable high-precision linear power supply, a power amplifier and a capacitive coupler, wherein the output end of the ripple generating system is connected with the input end of the power amplifier, and the output end of the power amplifier and the voltage-adjustable high-precision linear power supply are both connected with the capacitive coupler;
the ripple generating system can generate ripples corresponding to the preset power output value according to the preset power output value;
the power amplifier can amplify the power of the ripple;
the capacitive coupler can superimpose the ripple wave after power amplification to the output end of the voltage-adjustable high-precision linear power supply.
2. The ripple variable linear power supply of claim 1, wherein the ripple generation system comprises: the power amplifier comprises a human-computer interaction module and a main control module, wherein the human-computer interaction module is in communication connection with the main control module, the main control module is connected with the input end of the power amplifier, the human-computer interaction module receives ripple parameters corresponding to a power output preset value, and the main control module is used for generating ripples corresponding to the power output preset value according to the ripple parameters.
3. The ripple variable linear power supply of claim 2, wherein the ripple generation system comprises: the main control module is connected with the power amplifier through the digital-to-analog converter, and the digital-to-analog converter is used for generating the ripple generated by the main control module into a driving digital quantity to generate an analog quantity ripple and outputting the analog quantity ripple to the power amplifier.
4. The ripple variable linear power supply of claim 2, wherein the master control module comprises a single chip microcomputer.
5. The ripple variable linear power supply of claim 1, wherein the voltage adjustable high precision linear power supply comprises a power supply model E36103B.
6. The ripple variable linear power supply of claim 1, wherein the model of the power amplifier comprises LT 1970A.
7. The ripple variable linear power supply of claim 1, wherein the model number of the capacitive coupler comprises KC 355.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386014.5U CN213276403U (en) | 2020-10-23 | 2020-10-23 | Ripple-variable linear power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386014.5U CN213276403U (en) | 2020-10-23 | 2020-10-23 | Ripple-variable linear power supply |
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| Publication Number | Publication Date |
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| CN213276403U true CN213276403U (en) | 2021-05-25 |
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| CN202022386014.5U Active CN213276403U (en) | 2020-10-23 | 2020-10-23 | Ripple-variable linear power supply |
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