CN208316686U - It is a kind of to increase power amplifier output power to drive the circuit structure of transmitting transducer - Google Patents
It is a kind of to increase power amplifier output power to drive the circuit structure of transmitting transducer Download PDFInfo
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- CN208316686U CN208316686U CN201820983818.3U CN201820983818U CN208316686U CN 208316686 U CN208316686 U CN 208316686U CN 201820983818 U CN201820983818 U CN 201820983818U CN 208316686 U CN208316686 U CN 208316686U
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- Prior art keywords
- power amplifier
- resistance
- power
- output
- transmitting transducer
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- 238000004804 winding Methods 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000002463 transducing effect Effects 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036581 peripheral resistance Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The circuit structure of transmitting transducer is driven the utility model discloses a kind of increase power amplifier output power.Utilize the power amplifier of four same models, it is connected by the mode of bridge joint and parallel combination, bridge joint can be such that the output voltage of power amplifier doubles, parallel connection can make the output current doubles of power amplifier, therefore the power amplifier output power of bridge joint and parallel combination can achieve 4 times of single power amplifier peak power output.Simple impedance matching circuit is devised between power amplifier and transmitting transducer, improves energy transmission efficiency, makes power amplifier work in maximum power point.Pass through the utility model, being multiplied for power amplifier output power is realized with cheap cost, and guarantee that power amplifier work in maximum power point, drives powerful transmitting transducer to provide new technological means for power amplifier by impedance matching.
Description
Technical field
The utility model belongs to Designing power amplifier field, is exactly a kind of by bridge joint and paralleling model increase
Power amplifier output power is to drive the circuit structure of transmitting transducer.
Background technique
Transmitting transducer generates electric signal excitation energy converter by electro coupled oscillator and generates mechanical oscillation, thus pushes aqueous medium
Xiang Shuizhong emits sound wave.Energy converter can be used to detect object in water, and sonar forms transducing using many piezo-electric crystals
Device battle array come obtain sharp directionality to realize target position, sub-bottom profiler using transmitter vertically to the bottom repeat send out
Penetrate high power low-frequency pulsed sound, sound wave generates reflection echo when encountering water-bed and bed boundary below, thus to stratum
It is imaged.As it can be seen that underwater acoustic transducer is widely used, played an important role in hydrospace detection field.
In certain fields, if sub-bottom profiler application in, need to emit powerful acoustic signals, this just need to
Transmitting transducer provides very big electrical power, it usually needs reach KW rank, and powerful power amplifier is expensive, body
Product is also relatively bulky, often there is bulky capacitor in circuit, in addition, high-power in order to guarantee to export, power supply capacity is required greatly, usually
Bulky ring ox is needed, integration and miniaturization is not easy to.
Utility model content
To overcome above-mentioned the deficiencies in the prior art, the utility model provide a kind of increase power amplifier output power with
The circuit structure for driving transmitting transducer, realizes being multiplied for power amplifier output power with cheap cost, and
Guarantee that power amplifier work in maximum power point, drives powerful transmitting transducer for power amplifier by impedance matching
Provide new technological means.
The technical scheme adopted by the utility model is a kind of increase power amplifier output power is to drive transmitting transducing
The circuit structure of device, including the first power amplifier, the second power amplifier, third power amplifier, the 4th power amplifier,
The anode of resistance R1-R10, transformer T, inductance L1, the electrode input end of the first power amplifier and the second power amplifier is defeated
Enter end and connect input voltage,
One end of resistance R2 and one end of resistance R3 are connected with the negative input of the first power amplifier simultaneously, resistance R3
Other end ground connection, the output end of the first power amplifier is connected with one end of resistance R1；
One end of resistance R5 and one end of resistance R6 are connected with the negative input of the second power amplifier simultaneously, resistance R6
Other end ground connection, the output end of the second power amplifier is connected with one end of resistance R4；
One end of resistance R7 and one end of resistance R8 are connected with the electrode input end of third power amplifier simultaneously,
The other end of resistance R7, the other end of resistance R1, the other end of resistance R2, resistance R4 the other end and resistance R5
The other end be connected with one end of the armature winding of transformer T,
The negative input of third power amplifier is grounded, the output end of third power amplifier respectively with resistance R9 one
End is connected with the electrode input end of the 4th power amplifier,
The negative input of 4th power amplifier and the output end of the 4th power amplifier connected rear and resistance R10 one
End is connected, armature winding of the other end of the other end of resistance R8, the other end of resistance R9 and resistance R10 with transformer T
The other end be connected,
One end of the secondary windings of transformer T is connected with one end of inductance L1, and the other end of inductance L1 connects transmitting transducer
One end, the other end of the secondary windings of transformer T is connected with the other end of transmitting transducer.
The beneficial effects of the utility model are as follows: the utility model makes power amplification by the mode of bridge joint and parallel combination
The output power of device is multiplied, and impedance matching circuit also ensures that power amplifier work on maximum power point, with cheap
Cost realize efficient circuit design.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
Combined with specific embodiments below and attached drawing is described in further details the utility model, but the utility model not office
It is limited to this.
As shown in Figure 1, the utility model provides a kind of increase power amplifier output power to drive transmitting transducer
Circuit structure, it is connected by the power amplifier of four same models by the mode of bridge joint and parallel combination, and total is defeated
Power can achieve 4 times of single power amplifier peak power output out, and output end devises the impedance being made of transformer and inductance
Match circuit, it is ensured that power amplifier works in maximum power point.Specifically include the first power amplifier, the second power amplification
Device, third power amplifier, the 4th power amplifier, resistance R1-R10, transformer T, inductance L1, the first power amplifier is just
The electrode input end of pole input terminal and the second power amplifier connects input voltage, first power amplifier, the second power
Amplifier, third power amplifier and the 4th power amplifier model are identical；
One end of resistance R2 and one end of resistance R3 are connected with the negative input of the first power amplifier simultaneously, resistance R3
Other end ground connection, the output end of the first power amplifier is connected with one end of resistance R1；
One end of resistance R5 and one end of resistance R6 are connected with the negative input of the second power amplifier simultaneously, resistance R6
Other end ground connection, the output end of the second power amplifier is connected with one end of resistance R4；
One end of resistance R7 and one end of resistance R8 are connected with the electrode input end of third power amplifier simultaneously,
The other end of resistance R7, the other end of resistance R1, the other end of resistance R2, resistance R4 the other end and resistance R5
The other end be connected with one end of the armature winding of transformer T,
The negative input of third power amplifier is grounded, the output end of third power amplifier respectively with resistance R9 one
End is connected with the electrode input end of the 4th power amplifier,
The negative input of 4th power amplifier and the output end of the 4th power amplifier connected rear and resistance R10 one
End is connected,
Armature winding of the other end of the other end of resistance R8, the other end of resistance R9 and resistance R10 with transformer T
The other end be connected,
One end of the secondary windings of transformer T is connected with one end of inductance L1, and the other end of inductance L1 connects transmitting transducer
One end, the other end of the secondary windings of transformer T is connected with the other end of transmitting transducer.
Input signal is inputted from the anode of the first power amplifier, and peripheral resistance R2, R3 of the first power amplifier are determined
The amplification factor G=1+R2/R3 of power amplifier.The output end serial Feedback build-out resistor R1 and bridge of first power amplifier
Connecting resistance R7 is connected with the anode of third power amplifier, the anode of third power amplifier again successively by bridge resistance R8,
Feedback build-out resistor R9 is connected with the output end of third power amplifier, wherein R7=R8, then third power amplifier is defeated
The output end voltage of outlet voltage and the first power amplifier is equal in magnitude, opposite in phase, the load terminal voltage at bridge joint center
It is twice of single power amplifier output voltage.
First power amplifier and the second power amplifier input signal Vin having the same, identical periphery resistance R2
=R5, R3=R6, that is, realize the parallel connection of the first power amplifier and the second power amplifier, and the electric current of load end is single function
Rate amplifier exports 2 times of electric current.
The output end of third power amplifier is connected with the anode of the 4th power amplifier, the 4th power amplifier negative terminal with
The output end of 4th power amplifier is connected, and forms follow the mode, realizes third power amplifier and the 4th power amplifier
Parallel connection.
The output end of four power amplifiers is connected by impedance matching circuit with load energy converter, and power amplifier work is made
Make to export maximum current Imax while exporting maximum voltage Umax in maximum power point, impedance matching circuit includes becoming
Depressor and inductance, inductance realize tuning, and transformer realizes impedance transformation, the transducer impedance R=Umax/ by impedance matching
Imax。
Output end one feedback build-out resistor of series connection of each power amplifier, avoids when power amplifier output in parallel
The case where voltage difference causes electric current recharge and burns out power amplifier when not quite identical generation.
The utility model makes the output power of power amplifier be multiplied by the mode of bridge joint and parallel combination, and hinders
Anti- match circuit also ensures that power amplifier work on maximum power point, realizes efficient circuit with cheap cost and sets
Meter, meets the energy requirements of high-power transmitting transducer, drives powerful transmitting transducer to provide for power amplifier
New technological means.
Claims (4)
1. a kind of increase power amplifier output power to drive the circuit structure of transmitting transducer, which is characterized in that including the
One power amplifier, the second power amplifier, third power amplifier, the 4th power amplifier, resistance R1-R10, transformer T,
The electrode input end of inductance L1, the electrode input end of the first power amplifier and the second power amplifier connects input voltage,
One end of resistance R2 and one end of resistance R3 are connected with the negative input of the first power amplifier simultaneously, and resistance R3's is another
One end ground connection, the output end of the first power amplifier are connected with one end of resistance R1；
One end of resistance R5 and one end of resistance R6 are connected with the negative input of the second power amplifier simultaneously, and resistance R6's is another
One end ground connection, the output end of the second power amplifier are connected with one end of resistance R4；
One end of resistance R7 and one end of resistance R8 are connected with the electrode input end of third power amplifier simultaneously,
The other end of resistance R7, the other end of resistance R1, the other end of resistance R2, the other end of resistance R4 and resistance R5 it is another
One end is connected with one end of the armature winding of transformer T,
The negative input of third power amplifier is grounded, the output end of third power amplifier respectively with one end of resistance R9 and
The electrode input end of 4th power amplifier is connected,
One end phase after the negative input of 4th power amplifier and the output end of the 4th power amplifier are connected with resistance R10
Even,
The other end of the other end of resistance R8, the other end of resistance R9 and resistance R10 is another with the armature winding of transformer T
One end is connected,
One end of the secondary windings of transformer T is connected with one end of inductance L1, and the other end of inductance L1 meets the one of transmitting transducer
End, the other end of the secondary windings of transformer T are connected with the other end of transmitting transducer.
A kind of increase power amplifier output power 2. according to claim 1 to drive the circuit knot of transmitting transducer
Structure, which is characterized in that first power amplifier, the second power amplifier, third power amplifier and the 4th power amplification
Type number is identical.
A kind of increase power amplifier output power 3. according to claim 2 to drive the circuit knot of transmitting transducer
Structure, which is characterized in that the resistance value of the resistance R7 is identical with the resistance value of resistance R8.
A kind of increase power amplifier output power 4. according to claim 3 to drive the circuit knot of transmitting transducer
Structure, which is characterized in that the resistance value of the resistance R2 is identical with the resistance value of resistance R5, the resistance value of resistance R3 and the resistance value phase of resistance R6
Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983818.3U CN208316686U (en) | 2018-06-25 | 2018-06-25 | It is a kind of to increase power amplifier output power to drive the circuit structure of transmitting transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983818.3U CN208316686U (en) | 2018-06-25 | 2018-06-25 | It is a kind of to increase power amplifier output power to drive the circuit structure of transmitting transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208316686U true CN208316686U (en) | 2019-01-01 |
Family
ID=64707765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820983818.3U Expired - Fee Related CN208316686U (en) | 2018-06-25 | 2018-06-25 | It is a kind of to increase power amplifier output power to drive the circuit structure of transmitting transducer |
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| Country | Link |
|---|---|
| CN (1) | CN208316686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599729A (en) * | 2018-06-25 | 2018-09-28 | 浙江大学 | Increase power amplifier output power to drive the circuit structure of transmitting transducer |
-
2018
- 2018-06-25 CN CN201820983818.3U patent/CN208316686U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599729A (en) * | 2018-06-25 | 2018-09-28 | 浙江大学 | Increase power amplifier output power to drive the circuit structure of transmitting transducer |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190101 |