CN219107402U - Power enhancement circuit of amplifier module - Google Patents
Power enhancement circuit of amplifier module Download PDFInfo
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- CN219107402U CN219107402U CN202222548076.0U CN202222548076U CN219107402U CN 219107402 U CN219107402 U CN 219107402U CN 202222548076 U CN202222548076 U CN 202222548076U CN 219107402 U CN219107402 U CN 219107402U
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- 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
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Abstract
The utility model relates to the technical field of data acquisition, in particular to a power enhancement circuit of an amplifier module, which comprises the following components: the positive end of the comparator is connected with a low-voltage signal, the reverse end of the comparator is connected with an input voltage through a first detector, and a feedback RC circuit is arranged between the reverse end and the output end of the comparator; the resistor module comprises four resistors, any two of the four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor to form the resistor module, the input end of the resistor module is connected with the output end of the comparator, and the output end of the resistor module is connected with an external circuit through a second detector and is connected with the forward end of the comparator through a fifth resistor.
Description
Technical Field
The utility model relates to the technical field of data acquisition, in particular to a power enhancement circuit of an amplifier module.
Background
The mass flowmeter aims at an amplifier module designed for a large-caliber sensor, faces a high-viscosity medium in a use field or has insufficient power under a complex working condition, so that resistance is burnt out, and the performance of the amplifier module is directly affected. The principle diagram of the amplifier module of the existing large-caliber sensor design as shown in fig. 1 is that the reason for easy burnout is that: according to the property of the operational amplifier, the voltage at two ends of the resistor R6 can be calculated and found to be directly changed along with the input voltage, in the operational amplifier link, the resistor R6 is the element which is easiest to reach full load power according to the relation between power and voltage resistance, in the schematic diagram of the amplifier module designed by the prior large-caliber sensor shown in fig. 1, the input voltage is controlled by controlling the operational amplifier, thereby controlling the power of the resistor R6, the elements F1 and F2 are both fast fuses, in order to control the input voltage of the operational amplifier V-, the maximum current of the F1 is limited to 50mA, in order to control the current at the input end, the output power at the output end is limited by using the fast fuse, in order to improve the output power, the input of the current is improved under the condition that the voltage and the resistance are stable, the resistance is easy to burn out after the current is improved, on the other hand, the performance of the fast fuse is possibly influenced, and the mass flowmeter cannot be in a normal working state.
Disclosure of Invention
In view of the drawbacks of the prior art, the present application provides a power boost circuit for an amplifier module. Specifically:
a power boost circuit of an amplifier module, comprising:
the positive end of the comparator is connected with a low-voltage signal, the reverse end of the comparator is connected with an input voltage through a first detector, and a feedback RC circuit is arranged between the reverse end and the output end of the comparator;
the resistor module comprises four resistors, any two of the four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor to form the resistor module, the input end of the resistor module is connected with the output end of the comparator, and the output end of the resistor module is connected with an external circuit through a second detector and is connected with the forward end of the comparator through a fifth resistor.
Preferably, in the power boost circuit of an amplifier module, the feedback RC circuit includes a third resistor and a third capacitor, where the third resistor is connected in parallel with the third capacitor, one end of the third resistor is connected to the inverting terminal of the comparator, and the other end of the third resistor is connected to the output terminal of the comparator.
Preferably, the power enhancing circuit of an amplifier module further includes a seventh resistor, where the seventh resistor is disposed between the resistor module and the second detector.
Preferably, the power boost circuit of an amplifier module further includes a ninth resistor, where the ninth resistor is disposed between the third pin and the fourth pin of the comparator.
Preferably, in the power boost circuit of an amplifier module, four resistors have the same resistance.
Preferably, the power boost circuit of the amplifier module, wherein the rated current of the second detector is twice the rated current of the first detector.
Preferably, the power enhancing circuit of an amplifier module, wherein the power of the seventh resistor matches the power of the resistor module.
Compared with the prior art, the utility model has the beneficial effects that:
any two resistors in four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor in series to form a resistor module, the resistance value of the resistor module is still kept to be the resistance value of a single resistor, but the power of each resistor is one fourth of that of the single resistor.
Drawings
FIG. 1 is a schematic diagram of a power boost circuit of an amplifier module according to the prior art;
fig. 2 is a schematic diagram of a power enhancing circuit of an amplifier module according to the present utility model.
Detailed Description
As shown in fig. 2, a power boost circuit of an amplifier module includes:
the comparator U1, the positive end of the said comparator connects a low-voltage signal, the reverse end of the said comparator connects an input voltage through the first detector, set up a feedback RC circuit between reverse end and output end of the said comparator; illustratively, the positive terminal of the comparator is grounded through a fourth resistor and a fourth capacitor, and the fourth resistor and the fourth capacitor are connected in parallel. The fifth pin of the voltage comparator is a positive voltage signal input end, the fourth pin is a negative voltage signal input end, the positive voltage can be +24V, and the negative voltage can be-24V. The forward end of the comparator is formed by a first pin, the reverse end of the comparator is formed by a second pin, and the output end of the comparator is formed by a sixth pin.
The resistor module comprises four resistors, any two of the four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor to form the resistor module, the input end of the resistor module is connected with the output end of the comparator, and the output end of the resistor module is connected with an external circuit through a second detector and is connected with the forward end of the comparator through a fifth resistor. Further, the four resistors have the same resistance, for example, the resistance is 15Ω and the power is 6W.
Illustratively, the four resistors are a tenth resistor, an eleventh resistor, a twelfth resistor and a sixth resistor respectively, wherein the tenth resistor and the twelfth resistor are connected in parallel to form the first parallel resistor, and the eleventh resistor and the sixth resistor are connected in parallel to form the second parallel resistor; the resistance of the first parallel resistor is 7.5 omega, the resistance of the second parallel resistor is 7.5 omega, the first parallel resistor is connected with the second parallel resistor in series to form the resistor module, and the resistance of the resistor module is 15 omega.
Any two resistors in four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor to form a resistor module, the resistance value of the resistor module is still kept to be the resistance value of a single resistor, but the success rate of each resistor is one fourth of that of the single resistor.
Further, in the power boost circuit of the amplifier module, the feedback RC circuit includes a third resistor and a third capacitor, the third resistor is connected in parallel with the third capacitor, one end of the third resistor is connected to the reverse end of the comparator, and the other end of the third resistor is connected to the output end of the comparator. The feedback RC circuit is formed by connecting a third resistor and a third capacitor in parallel, wherein the resistance value of the third resistor is 120K, and the capacitance value of the third capacitor is 3300PF. The third capacitor is used for filtering the voltage signal.
As a further preferred embodiment, the power boost circuit of an amplifier module further includes a seventh resistor, where the seventh resistor is disposed between the resistor module and the second detector. Further, the resistance value of the seventh resistor R7 is 6.8Ω, and the power of the seventh resistor R7 is 2W. The power of the seventh resistor matches the power of the resistor module.
As a further preferred embodiment, the power boost circuit of an amplifier module further includes a ninth resistor R9, where the ninth resistor is disposed between the third pin and the fourth pin of the comparator. Because the output function of the operational amplifier circuit is improved, in order to prevent the comparator from drifting, the characteristics of virtual break and virtual short can be understood as the comparator being more stably kept, and a ninth resistor is arranged, and the ninth resistor is a pull-down resistor and is used for controlling the comparator to stably work.
As a further preferred embodiment, the power boost circuit of an amplifier module described above, wherein the rated current of the second detector is twice the rated current of the first detector. The rated current of the first detector was 125mA and the rated current of the second detector was 250mA.
As a further preferred embodiment, in an example provided in the present application, the voltage stabilizing diodes are further connected in parallel and then connected in series, for example, the voltage stabilizing diodes D1, D2, D3, D4, D10, D9, D8 and D7, and the diodes connected in parallel and then connected in series are used to provide stability of the current of the operational amplifier circuit.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (7)
1. A power boost circuit of an amplifier module, comprising:
the positive end of the comparator is connected with a low-voltage signal, the reverse end of the comparator is connected with an input voltage through a first detector, and a feedback RC circuit is arranged between the reverse end and the output end of the comparator;
the resistor module comprises four resistors, any two of the four resistors are connected in parallel to form a first parallel resistor and a second parallel resistor, the first parallel resistor is connected with the second parallel resistor to form the resistor module, the input end of the resistor module is connected with the output end of the comparator, and the output end of the resistor module is connected with an external circuit through a second detector and is connected with the forward end of the comparator through a fifth resistor.
2. The power boost circuit of claim 1 wherein said feedback RC circuit comprises a third resistor and a third capacitor, said third resistor being connected in parallel with said third capacitor, wherein one end of said third resistor is connected to the inverting terminal of said comparator and the other end of said third resistor is connected to the output terminal of said comparator.
3. The power boost circuit of claim 1 further comprising a seventh resistor disposed between said resistor module and said second detector.
4. The power boost circuit of claim 1 further comprising a ninth resistor disposed between the third pin and the fourth pin of the comparator.
5. The power boost circuit of claim 1, wherein the four resistors have the same resistance.
6. The power boost circuit of claim 1 wherein the current rating of said second detector is twice the current rating of said first detector.
7. A power boost circuit of an amplifier module according to claim 3, wherein the power of said seventh resistor matches the power of said resistor module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222548076.0U CN219107402U (en) | 2022-09-26 | 2022-09-26 | Power enhancement circuit of amplifier module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222548076.0U CN219107402U (en) | 2022-09-26 | 2022-09-26 | Power enhancement circuit of amplifier module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219107402U true CN219107402U (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222548076.0U Active CN219107402U (en) | 2022-09-26 | 2022-09-26 | Power enhancement circuit of amplifier module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219107402U (en) |
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2022
- 2022-09-26 CN CN202222548076.0U patent/CN219107402U/en active Active
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