CN219577012U - Ultrahigh voltage amplifier circuit based on open-loop transformer - Google Patents
Ultrahigh voltage amplifier circuit based on open-loop transformer Download PDFInfo
- Publication number
- CN219577012U CN219577012U CN202320353010.8U CN202320353010U CN219577012U CN 219577012 U CN219577012 U CN 219577012U CN 202320353010 U CN202320353010 U CN 202320353010U CN 219577012 U CN219577012 U CN 219577012U
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- transformer
- resistor
- open
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses an ultrahigh voltage amplifier circuit based on an open-loop transformer, and relates to the technical field of circuits; comprises a first operational amplifier, a second operational amplifier and a transformer; the output end of the first operational amplifier is connected with one end of a primary coil of the transformer, the other end of the primary coil of the transformer is connected with the positive input end of the second operational amplifier, the output end of the second operational amplifier is connected with the negative input end of the first operational amplifier, and the positive input end of the first operational amplifier and the negative input end of the second operational amplifier are grounded. The utility model has the beneficial effects that: by utilizing the transformer principle, the signal is amplified, and the voltage withstand limitation of the semiconductor device can be avoided, so that an ultrahigh voltage signal is generated.
Description
Technical Field
The utility model relates to the technical field of circuits, in particular to an ultrahigh voltage amplifier circuit based on an open-loop transformer.
Background
An operational amplifier is a circuit unit with a very high amplification factor. In a practical circuit, some functional module is usually formed together with a feedback network. It is an amplifier with special coupling circuit and feedback.
However, in practical application, the upper limit value of the withstand voltage of the transistor in the operational amplifier is low, which limits the amplified output voltage, and cannot meet the requirement of outputting high voltage.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an ultrahigh voltage amplifier circuit based on an open-loop transformer, which can output high voltage through an operational amplifier.
The technical scheme adopted for solving the technical problems is as follows: in an open loop transformer based ultra-high voltage amplifier circuit, the improvement comprising: comprises a first operational amplifier, a second operational amplifier and a transformer;
the output end of the first operational amplifier is connected with one end of a primary coil of the transformer, the other end of the primary coil of the transformer is connected with the positive input end of the second operational amplifier, the output end of the second operational amplifier is connected with the negative input end of the first operational amplifier, and the positive input end of the first operational amplifier and the negative input end of the second operational amplifier are grounded.
The open-loop transformer-based ultrahigh voltage amplifier circuit in the above technical scheme further comprises a resistor R4, wherein the resistor R4 is connected between the negative input end of the second operational amplifier and the output end of the second operational amplifier.
The ultrahigh voltage amplifier circuit based on the open loop transformer in the above technical scheme further comprises a resistor R6 and a resistor R7, wherein two ends of the resistor R6 are respectively connected with the positive poles of the transformer and the second operational amplifier, one end of the resistor R7 is connected between the positive pole of the second operational amplifier and the transformer, and the other end of the resistor R7 is grounded.
The ultrahigh voltage amplifier circuit based on the open-loop transformer in the technical scheme further comprises a capacitor C3, wherein one end of the capacitor C3 is connected between the transformer and the positive electrode of the second operational amplifier, and the other end of the capacitor C3 is grounded.
The beneficial effects of the utility model are as follows: the utility model amplifies the signal by utilizing the transformer principle, and can avoid the voltage-resistant limitation of the semiconductor device, thereby generating the ultra-high voltage signal.
Drawings
Fig. 1 is a schematic diagram of a circuit of an extra-high voltage amplifier based on an open loop transformer according to the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1, as shown in the drawing, the present utility model provides an extra-high voltage amplifier circuit based on an open loop transformer, which comprises a first operational amplifier 10, a second operational amplifier 30 and a transformer 20.
An output end of the first operational amplifier 10 is connected with one end of a primary coil of the transformer 20, the other end of the primary coil of the transformer 20 is connected with a positive input end of the second operational amplifier 30, an output end of the second operational amplifier 30 is connected with a negative input end of the first operational amplifier 10, and the positive input end of the first operational amplifier 10 and the negative input end of the second operational amplifier 30 are grounded.
The voltage output by the first operational amplifier 10 is multiplied by the transformer 20 and then output, so that the problem that the voltage output by the operational amplifier is limited due to the voltage withstand of a transistor in the operational amplifier is solved, the second operational amplifier 30 is used for eliminating the direct current component of a loop of the transformer 20, and the scheme can not output a direct current signal, but can output a very high alternating current voltage signal, breaks through the voltage withstand limit of the transistor and has more advantages in the aspect of cost. By amplifying the signal based on the operation principle of the transformer 20, the limitation of withstand voltage of the semiconductor device can be avoided, thereby generating an ultra-high voltage signal. The low-voltage linear adjusting circuit is added in front of the transformer 20, and the high-voltage output is fed back to form a closed loop, so that the problems of load effect, waveform distortion and the like can be solved. The circuit can amplify alternating voltage only, can realize any high voltage signal in theory, such as 10kV, 100kV and 1000kV, and can be used as a precise signal source and the like.
The open-loop transformer-based ultrahigh voltage amplifier circuit further comprises a resistor R4, wherein the resistor R4 is connected between the negative input end of the second operational amplifier 30 and the output end of the second operational amplifier 30.
The open-loop transformer-based ultrahigh voltage amplifier circuit further comprises a resistor R6 and a resistor R7, wherein two ends of the resistor R6 are respectively connected with the positive poles of the transformer 20 and the second operational amplifier 30, one end of the resistor R7 is connected between the positive pole of the second operational amplifier 30 and the transformer 20, and the other end of the resistor R7 is grounded.
The open-loop transformer-based ultrahigh voltage amplifier circuit further comprises a capacitor C3, wherein one end of the capacitor C3 is connected between the transformer 20 and the positive electrode of the second operational amplifier 30, and the other end of the capacitor C is grounded.
The first operational amplifier 10 may output a voltage ±300V and a current ±1a; the resistor R2 is closed-loop voltage feedback control, is not limited to one resistor, can be connected in series by a plurality of resistors, and can be connected in parallel by a capacitor; resistor R3 is an output dc bias feedback control because transformer 20 cannot have dc; the transformer 20 generates a voltage signal on the current sampling resistor R7, and then detects a dc bias component thereof through the resistor R6 and the capacitor C3, and inputs the voltage signal to the second operational amplifier 30, and finally affects the output of the first operational amplifier 10, so that the dc bias component of the resistor R7 is controlled to be infinitely close to 0, i.e., the transformer 20 has no dc bias.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (4)
1. An open loop transformer-based ultra-high voltage amplifier circuit is characterized in that: comprises a first operational amplifier, a second operational amplifier and a transformer;
the output end of the first operational amplifier is connected with one end of a primary coil of the transformer, the other end of the primary coil of the transformer is connected with the positive input end of the second operational amplifier, the output end of the second operational amplifier is connected with the negative input end of the first operational amplifier, and the positive input end of the first operational amplifier and the negative input end of the second operational amplifier are grounded.
2. An open loop transformer based ultra-high voltage amplifier circuit as claimed in claim 1, wherein: the open-loop transformer-based ultrahigh voltage amplifier circuit further comprises a resistor R4, and the resistor R4 is connected between the negative input end of the second operational amplifier and the output end of the second operational amplifier.
3. An open loop transformer based ultra-high voltage amplifier circuit as claimed in claim 1, wherein: the ultra-high voltage amplifier circuit based on the open loop transformer further comprises a resistor R6 and a resistor R7, wherein two ends of the resistor R6 are respectively connected with the positive poles of the transformer and the second operational amplifier, one end of the resistor R7 is connected between the positive pole of the second operational amplifier and the transformer, and the other end of the resistor R7 is grounded.
4. An open loop transformer based ultra-high voltage amplifier circuit as claimed in claim 1, wherein: the open-loop transformer-based ultrahigh voltage amplifier circuit further comprises a capacitor C3, one end of the capacitor C3 is connected between the transformer and the positive electrode of the second operational amplifier, and the other end of the capacitor C3 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353010.8U CN219577012U (en) | 2023-02-28 | 2023-02-28 | Ultrahigh voltage amplifier circuit based on open-loop transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353010.8U CN219577012U (en) | 2023-02-28 | 2023-02-28 | Ultrahigh voltage amplifier circuit based on open-loop transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219577012U true CN219577012U (en) | 2023-08-22 |
Family
ID=87654863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320353010.8U Active CN219577012U (en) | 2023-02-28 | 2023-02-28 | Ultrahigh voltage amplifier circuit based on open-loop transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219577012U (en) |
-
2023
- 2023-02-28 CN CN202320353010.8U patent/CN219577012U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5160896A (en) | Class D amplifier | |
| CN101557202B (en) | High power D-type power amplifier | |
| US7545212B2 (en) | Class ad audio amplifier | |
| CN219577012U (en) | Ultrahigh voltage amplifier circuit based on open-loop transformer | |
| US2773136A (en) | Amplifier | |
| US10158326B2 (en) | Audio amplifier | |
| JP2021534689A (en) | Methods and equipment for voltage buffering | |
| US2844667A (en) | Cascade transistor amplifiers | |
| Bellili et al. | Low power class D audio amplifier with high performance and high efficiency | |
| TWI474614B (en) | Power amplifier | |
| US7511571B2 (en) | Single-ended screen-regulated cathode-follower output stage for high-fidelity music amplifier | |
| US3986131A (en) | Class AB-dual push-pull amplifier | |
| US20100271127A1 (en) | Electronic amplifier | |
| US2552136A (en) | Linear amplifier system | |
| WO2019177487A1 (en) | Low-frequency vacuum tube amplifier | |
| Rudiakova et al. | Driving waveforms for class-F power amplifiers [GaAs MESFETs] | |
| CN105453422A (en) | Method and circuitry for multi-stage amplification | |
| US3416091A (en) | Amplifier circuit having feedback connection for reducing distortion caused by the non-linear characteristic of its output transformer | |
| He et al. | The design of a high-efficiency mode-switching power amplifier with a parallel combining transformer for LTE application | |
| Pan et al. | The design of a low distortion power amplifier based on cascode | |
| JP4982761B2 (en) | Method and circuit for imparting unidirectionality to an electronic circuit by feedback | |
| CN103956980A (en) | Unrestrictive line voltage-following and power-buffering amplifier | |
| DE2922547C2 (en) | Quasi-linear transistor power amplifier | |
| CN117240258B (en) | Pulse signal regulating circuit and high-voltage pulse source | |
| CN106788291A (en) | High-power amplifier integrated circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |