CN219477642U - Direct-current high-voltage charging circuit for current waveform generator - Google Patents
Direct-current high-voltage charging circuit for current waveform generator Download PDFInfo
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- CN219477642U CN219477642U CN202320638814.2U CN202320638814U CN219477642U CN 219477642 U CN219477642 U CN 219477642U CN 202320638814 U CN202320638814 U CN 202320638814U CN 219477642 U CN219477642 U CN 219477642U
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- autotransformer
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Abstract
The utility model discloses a direct-current high-voltage charging circuit for a current waveform generator, which comprises an autotransformer, wherein one end of a primary coil of the autotransformer is connected with a first power input end through a first current limiting resistor R1, the other end of the primary coil of the autotransformer is connected with a second power input end, one end of a secondary coil of the autotransformer is connected with the positive electrode of a rectifier diode D1, the negative electrode of the rectifier diode D1 is connected with a first sampling resistor R3 through a second current limiting resistor R2, the other end of the secondary coil of the autotransformer is connected with a second sampling resistor R4, and the first sampling resistor R3 and the second sampling resistor R4 are connected in series. The utility model has the characteristics of simple circuit, low cost and controllable charging voltage, can adjust the charging voltage according to actual requirements, and has high practicability.
Description
Technical Field
The utility model belongs to the technical field of electronic circuits, and particularly relates to a direct-current high-voltage charging circuit for a current waveform generator.
Background
The charging capacitor used by the current waveform generator has larger capacity, higher voltage and larger charging current, and the power voltage and current of common electronic components can not meet the requirements, if the insulation and voltage resistance of the electronic components can not meet the requirements, the current waveform generator is very easy to damage the electronic components in the charging and discharging process.
Disclosure of Invention
In order to solve the problems in the background technology, the utility model provides a direct-current high-voltage charging circuit for a current waveform generator, which has the characteristics of simple circuit structure, high reliability and flexible adjustment of charging voltage.
In order to achieve the above purpose, the utility model provides a direct current high voltage charging circuit for a current waveform generator, comprising an autotransformer, wherein one end of a primary coil of the autotransformer is connected with a first power input end through a first current limiting resistor, the other end of the primary coil of the autotransformer is connected with a second power input end, one end of a secondary coil of the autotransformer is connected with an anode of a rectifier diode, a cathode of the rectifier diode is connected with a first sampling resistor through a second current limiting resistor, the other end of the secondary coil of the autotransformer is connected with a second sampling resistor, and the first sampling resistor and the second sampling resistor are connected in series.
As a further description of the above technical solution: the primary winding of the autotransformer has a plurality of taps.
As a further description of the above technical solution: the taps are respectively provided with a switch.
As a further description of the above technical solution: the number of taps is six.
As a further description of the above technical solution: the second current limiting resistor is also connected in series with an energy storage capacitor, and the energy storage capacitor is connected with the first sampling resistor and the second sampling resistor in parallel.
As a further description of the above technical solution: and the second sampling resistor is connected with a sampling processing circuit.
Compared with the prior art, the utility model has the beneficial effects that:
1. the circuit has the advantages of simple structure, high reliability and strong anti-interference capability;
2. the utility model has controllable charging voltage and low cost;
3. the utility model can adjust the actual charging power according to the requirement to meet the actual charging requirement of the current waveform generator, and can avoid damaging the electronic element due to the over-high charging voltage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a dc high voltage charging circuit for a current waveform generator according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a dc high voltage charging circuit for a current waveform generator, which includes an autotransformer T1.
Preferably, the autotransformer T1 is a high voltage autotransformer.
In one embodiment, the primary winding of the autotransformer T1 is connected to a power input.
Specifically, one end of the primary coil of the autotransformer T1 is connected to the first power input terminal a through the first current limiting resistor R1, and the other end of the primary coil of the autotransformer T1 is connected to the second power input terminal B.
Further, the primary winding of the autotransformer T1 has multiple taps (when the primary winding of the autotransformer T1 has multiple series windings, the leads from the connection points of the series windings are called taps, and the taps can obtain higher voltages, but the power supplies are not independent.
In an embodiment, the number of taps is six, and the taps are connected in parallel.
Further, in order to control the output voltage of the autotransformer T1 conveniently, the taps are respectively provided with a switch, when the switch is in an open state, the corresponding tap is in an open state, and when the switch is in a closed state, the corresponding tap is in a connected state.
Specifically, the autotransformer T1 has six taps, which are tap 1, tap 2, tap 3, tap 4, tap 5 and tap 6, respectively, the tap 1 is correspondingly provided with a first switch S1, the tap 2 is correspondingly provided with a second switch S2, the tap 3 is correspondingly provided with a third switch S3, the tap 4 is correspondingly provided with a fourth switch S4, the tap 5 is correspondingly provided with a fifth switch S5, and the tap 6 is correspondingly provided with a sixth switch S6.
Specifically, when only the first switch S1 is in the closed state, that is, only the tap 1 is in the connected state, and the tap 2, the tap 3, the tap 4, the tap 5 and the tap 6 are all in the disconnected state, the voltage that the autotransformer T1 can output is the lowest, that is, the charging voltage provided to the current waveform generator is the lowest; when only the second switch S2 is in the closed state, i.e., only the tap 2 is in the connected state, and the tap 1, the tap 3, the tap 4, the tap 5, and the tap 6 are all in the disconnected state, the voltage that the autotransformer T1 can output is second lowest, i.e., the charging voltage that is supplied to the current waveform generator is second lowest. Similarly, when the sixth switch S6 is in the closed state, the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, and the fifth switch S5 are in the open state, that is, the tap 6 is in the on state, and the tap 1, the tap 2, the tap 3, the tap 4, and the tap 5 are all in the off state, the voltage that the autotransformer T1 can output is the highest, that is, the charging voltage that is provided to the current waveform generator is the highest.
Further, the first current limiting resistor R1 is connected in series with tap 1, tap 2, tap 3, tap 4, tap 5 and tap 6, respectively.
By means of the arrangement, the output voltage of the autotransformer T1 can be controlled by controlling the corresponding tap through the control switch, the circuit is very simple, and the control is very flexible and convenient.
Further, the secondary coil of the autotransformer T1 is connected with a sampling processing circuit C, which is used for monitoring the output voltage of the autotransformer T1 in real time, so as to meet the charging requirement of the current waveform generator, and meanwhile, damage to electronic elements caused by overhigh charging voltage can be avoided.
Specifically, one end of the secondary coil of the autotransformer T1 is connected with the positive electrode of the rectifying diode D1, the negative electrode of the rectifying diode D1 is connected with the first sampling resistor R3 through the second current limiting resistor R2, the other end of the secondary coil of the autotransformer T1 is connected with the second sampling resistor R4, and the second sampling resistor R4 is connected with the sampling processing circuit C.
Preferably, the first sampling resistor R3 and the second sampling resistor R4 are connected in series.
In an embodiment, the second current limiting resistor R2 is further connected in series with an energy storage capacitor C1, and the energy storage capacitor C1 is connected in parallel with the first sampling resistor R3 and the second sampling resistor R4.
The working principle of the utility model is as follows: when the first switch S1 is closed, the second switch S2, the third switch S3, the fourth switch S4, the fifth switch S5 and the sixth switch S6 are opened, the ac voltage of the external power supply enters the primary winding of the autotransformer T1 from the tap 1 through the first power supply input terminal a and the second power supply input terminal B through the first switch S1, then reaches the secondary winding of the autotransformer T1, after being boosted by the secondary winding of the autotransformer T1, the rectifier diode D1 and the second current limiting resistor R2 charge the energy storage capacitor C1, and since the rectifier diode D1 and the second current limiting resistor R2 perform the current limiting function, the energy storage capacitor C1 charges at a preset speed, the first sampling resistor R3 and the second sampling resistor R4 collect the voltage values at both ends of the energy storage capacitor C1 in real time, when the voltage values at both ends of the energy storage capacitor C1 reach the first threshold value, the autotransformer T1 is controlled to close the second switch S2 and simultaneously open the first switch S1, at this time, the third switch S3, the fourth switch S4, the fifth switch S5 and the sixth switch S6 are still in an open state, the AC voltage of the external power supply enters the primary coil of the autotransformer T1 through the tap 2, and then is boosted through the secondary coil of the autotransformer T1 to continuously charge the energy storage capacitor C1, so as to reciprocate until the voltage values at two ends of the energy storage capacitor C1 acquired by the first sampling resistor R3 and the second sampling resistor R4 reach the rated values, in the process, the voltage values at two ends of the energy storage capacitor C1 are transmitted to the sampling processing circuit C by the first sampling resistor R3 and the second sampling resistor R4 so as to monitor the output voltage of the autotransformer T1 in real time, thereby meeting the charging requirement of the energy storage capacitor C1, meanwhile, damage to the electronic element caused by overhigh charging voltage can be avoided.
The utility model has the characteristics of simple circuit, low cost and controllable charging voltage, can adjust the charging voltage according to actual requirements, and has high practicability.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
In the description of the present specification, a description of the terms "one embodiment," "another embodiment," "example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The further embodiments of the utility model disclosed above are intended only to help illustrate the utility model. Further examples are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.
Claims (6)
1. A dc high voltage charging circuit for a current waveform generator, characterized by: the transformer comprises an autotransformer (T1), one end of a primary coil of the autotransformer (T1) is connected with a first power input end (A) through a first current limiting resistor (R1), the other end of the primary coil of the autotransformer (T1) is connected with a second power input end (B), one end of a secondary coil of the autotransformer (T1) is connected with the positive electrode of a rectifier diode (D1), the negative electrode of the rectifier diode (D1) is connected with a first sampling resistor (R3) through a second current limiting resistor (R2), the other end of a secondary coil of the autotransformer (T1) is connected with a second sampling resistor (R4), and the first sampling resistor (R3) and the second sampling resistor (R4) are connected in series.
2. A dc high voltage charging circuit for a current waveform generator as defined in claim 1, wherein: the primary coil of the autotransformer (T1) has a plurality of taps.
3. A dc high voltage charging circuit for a current waveform generator as defined in claim 2, wherein: the taps are respectively provided with a switch.
4. A dc high voltage charging circuit for a current waveform generator as claimed in claim 3, wherein: the number of taps is six.
5. A dc high voltage charging circuit for a current waveform generator as defined in claim 1, wherein: the second current limiting resistor (R2) is also connected with an energy storage capacitor (C1) in series, and the energy storage capacitor (C1) is connected with the first sampling resistor (R3) and the second sampling resistor (R4) in parallel.
6. A dc high voltage charging circuit for a current waveform generator as defined in claim 1, wherein: the second sampling resistor (R4) is connected with a sampling processing circuit (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320638814.2U CN219477642U (en) | 2023-03-20 | 2023-03-20 | Direct-current high-voltage charging circuit for current waveform generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320638814.2U CN219477642U (en) | 2023-03-20 | 2023-03-20 | Direct-current high-voltage charging circuit for current waveform generator |
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| Publication Number | Publication Date |
|---|---|
| CN219477642U true CN219477642U (en) | 2023-08-04 |
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|---|---|---|---|
| CN202320638814.2U Active CN219477642U (en) | 2023-03-20 | 2023-03-20 | Direct-current high-voltage charging circuit for current waveform generator |
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| CN (1) | CN219477642U (en) |
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- 2023-03-20 CN CN202320638814.2U patent/CN219477642U/en active Active
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