CN203057089U - Amplifier capable of controlling operating mode - Google Patents
Amplifier capable of controlling operating mode Download PDFInfo
- Publication number
- CN203057089U CN203057089U CN 201320032724 CN201320032724U CN203057089U CN 203057089 U CN203057089 U CN 203057089U CN 201320032724 CN201320032724 CN 201320032724 CN 201320032724 U CN201320032724 U CN 201320032724U CN 203057089 U CN203057089 U CN 203057089U
- Authority
- CN
- China
- Prior art keywords
- amplifier
- microprocessor
- power supply
- converter
- potential device
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses an amplifier capable of controlling an operating mode. The amplifier capable of controlling the operating mode comprises an amplifier body, and further comprises a sampling resistor, an analog to digital (AD) converter, a microprocessor, a first digital to analog (DA) converter, a programmable power supply, a biasing resistor, a second DA converter, a motor-driven potentiometer, a feedback resistor and a power supply. The sampling resistor and a first outlet end of the amplifier body are connected with the AD converter. The AD converter is connected with an input end of the microprocessor. A first outlet end of the microprocessor is connected with the programmable power supply through the first DA converter. The programmable power supply is connected with the biasing resistor. The biasing resistor is connected with one end of the motor-driven potentiometer, and the other end of the motor-driven potentiometer is connected with the ground. A second output end of the microprocessor is connected with a control end of the motor-driven potentiometer through the second DA converter. A second input end of the amplifier body is connected with a connecting point of the biasing resistor and the motor-driven potentiometer. An output end of the amplifier body is connected with the second input end of the amplifier body through the feedback resistor. The amplifier can achieve three operating modes including an amplification mode, a stabilization mode and an isolation mode and can carry out automatic switch.
Description
Technical field
The utility model belongs to electronic technology field, is specifically related to a kind of amplifier that can control mode of operation.
Background technology
Various amplifiers are very many in actual applications.As " with the amplifier of switch control output state " of CN 2147634Y bulletin, this amplifier is by two distributors, a splitter and two three-pole switch K only
1The output state control circuit that connects to form, and be located in the amplifier circuit, only need stir during use and be installed in two three-pole switch K that amplify on the mainboard
1, the two-way output services that get final product control amplifier are distributing output state or branch's output state; This amplifier is applicable to amplified television signal in the cable television system, the decay of compensation TV signal in cable transmission." the multifunctional motor-driven servo amplifier " of CN 2169009Y bulletin and for example, this amplifier is made up of central controller and power drive two large divisions; Central controller is shown with numeral and is connected with showing diverter switch, level conversion, A/D conversion with the valve position signal transducer by input, another road comparator, three-position switch, manual switching and demonstration handover operation keyboard, state control circuit, interlocking switch, driving conversion are formed, thereby the numeral of finishing valve position signal and control signal shows and to the control of electric control valve, and can differentiate the positive and negative polarity of control signal and valve position signal, have the function that is connected with microcomputer simultaneously.But, above-mentioned electron-amplifier is in case after adopting, it can only be to amplify, stablize, to isolate a kind of pattern work in three kinds of patterns, can not be operated in amplification mode or stable mode or isolation mode as required, and carry out the switching of three kinds of patterns, some occasion (such as, accurate amplification, multi-path voltage stabilizer, the permutation amplifier that can handle multiple signal simultaneously, occasion such as invasion shielding etc.) can not satisfy the demand.Therefore, need the other electron-amplifier of exploitation.
Summary of the invention
The purpose of this utility model provides a kind of amplifier that can control mode of operation, to realize amplifying, stablize, isolating three kinds of mode of operations, and can automatically switch, adapt to the requirement of special occasions such as accurate amplification, multipath voltage regulation, permutation amplification, invasion shielding.
A kind of amplifier that can control mode of operation described in the utility model, comprise amplifier, also comprise sampling resistor, AD converter, microprocessor, a DA transducer, programmable power supply, biasing resistor, the 2nd DA transducer, electro kinetic potential device, feedback resistance and power supply; Described power supply and amplifier, AD converter, microprocessor, the one DA transducer, programmable power supply, the 2nd DA transducer is connected with the electro kinetic potential device, working power is provided, one end of sampling resistor is connected with the first input end of amplifier, gather input signal, the other end of sampling resistor is connected with the input of microprocessor by AD converter, the signal that collects is sent in the microprocessor after the AD conversion and is judged, first output of microprocessor is connected with programmable power supply by a DA transducer, the output voltage of microprocessor output control signal control programmable power supply after the DA conversion, programmable power supply is connected with an end of biasing resistor, provide bias voltage to biasing resistor, the other end of biasing resistor is connected with an end of electro kinetic potential device, the other end ground connection of electro kinetic potential device, second output of microprocessor connects the control end of electro kinetic potential device by the 2nd DA transducer, microprocessor output control signal is regulated the electro kinetic potential device after the DA conversion resistance, the second input termination biasing resistor of amplifier and the tie point of electro kinetic potential device, obtain the reverse input voltage of amplifier, the output of amplifier is connected with second input by feedback resistance, forms feedback loop.
Its operation principle is as follows: be set with in the microprocessor and amplify, stablize, isolate three kinds of mode of operation corresponding programs, input signal is from the first input end input of amplifier, simultaneously sampling resistor is gathered this input signal and is sent in the microprocessor after the AD conversion and handle, microprocessor is according to the program output two path control signal of result and setting, one the tunnel controls programmable power supply after the DA conversion gives the biasing resistor bias voltage, the resistance of another road control electro kinetic potential device after the DA conversion; Change the bias voltage of biasing resistor and the resistance of electro kinetic potential device, can change the reverse input voltage of amplifier, thereby realize amplification, stable, three kinds of mode of operations of isolation, and carry out the switching of mode of operation according to actual needs.
The utlity model has following effect:
(1) only adopts an amplifier just can be operated in amplification mode or stable mode or isolation mode as required, and can automatically switch easy to use, highly versatile.
(2) can be to the input signal processing of classifying, amplifying needs amplifying signal, stable signal, the isolation unwanted signal of stable needs, of many uses.
(3) circuit structure is simple.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
A kind of amplifier that can control mode of operation as shown in Figure 1, comprise amplifier 5, sampling resistor 1, AD converter 2, microprocessor 3, a DA transducer 4, programmable power supply 9, biasing resistor 6, the 2nd DA transducer 10, electro kinetic potential device 7, feedback resistance 11 and power supply 8, microprocessor 3 adopts Dezhou RM4 ARM Cortex-R4F Series series, and electro kinetic potential device 7 adopts deep Rui's UP series; Power supply 8 and amplifier 5, AD converter 2, microprocessor 3, the one DA transducer 4, programmable power supply 9, the 2nd DA transducer 10 is connected with electro kinetic potential device 7, working power is provided, one end of sampling resistor 1 is connected with the end in the same way of amplifier 5, gather input signal, the other end of sampling resistor 1 is connected with the input of AD converter 2, the output of AD converter 2 is connected with the input of microprocessor 3, the signal that collects is sent in the microprocessor 3 after the AD conversion and is judged, first output of microprocessor 3 is connected with the input of a DA transducer 4, the output of the one DA transducer 4 is connected with programmable power supply 9, the output voltage of microprocessor 3 output control signals control programmable power supply 9 after the DA conversion, programmable power supply 9 is connected with an end of biasing resistor 6, bias voltage is provided for biasing resistor 6, the other end of biasing resistor 6 is connected with an end of electro kinetic potential device 7, the other end ground connection of electro kinetic potential device 7, the input of the second output termination the 2nd DA transducer 10 of microprocessor 3, the control end of the output termination electro kinetic potential device 7 of the 2nd DA transducer 10, microprocessor 3 output control signals are regulated electro kinetic potential device 7 after the DA conversion resistance, the reverse termination biasing resistor 6 of amplifier 5 and the tie point of electro kinetic potential device 7, obtain the reverse input voltage of amplifier, the output of amplifier 5 is connected with backward end by feedback resistance 11, forms feedback loop.
Its operation principle is as follows:
Be set with in the microprocessor 3 and amplify, stablize, isolate three kinds of mode of operation corresponding programs (namely when be operated in amplification mode, when be operated in stable mode, when be operated in isolation mode).
Input signal is from the in-phase end input of amplifier 5, sampling resistor 1 is gathered this input signal simultaneously, after AD converter 2 conversions, send into judgment processing in the microprocessor 3, microprocessor 3 is according to the program output two path control signal of judgment processing result and setting, one the tunnel controls programmable power supply 9 after a DA transducer 4 conversions gives biasing resistor 6 bias voltages, the resistance of another road control electro kinetic potential device 7 after 10 conversions of the 2nd DA transducer, and then voltage is provided for the backward end of amplifier 5; When the needs amplification input signal, the bias voltage of microprocessor 3 control biasing resistors 6 and the resistance of electro kinetic potential device 7, make amplifier open loop difference mode gain reach positive set point (or maximum), amplifier is operated in amplification mode, and input signal is exaggerated the back from the output output of amplifier 5; When needs are stablized input signal, the bias voltage of microprocessor 3 control biasing resistors 6 and the resistance of electro kinetic potential device 7 make amplifier open loop difference mode gain reach null value, and amplifier is operated in stable mode, input signal is after amplifier 5 is stablized, from its output output; When needs are isolated input signal, the bias voltage of microprocessor 3 control biasing resistors 6 and the resistance of electro kinetic potential device 7, make amplifier open loop difference mode gain reach negative set point (or maximum), amplifier is operated in isolation mode, and amplifier 5 isolates out the signal of input.
Microprocessor 3 can also be connected with computer and carries out various controls in the utility model.
Claims (1)
1. the amplifier that can control mode of operation, comprise amplifier (5), it is characterized in that: also comprise sampling resistor (1), AD converter (2), microprocessor (3), a DA transducer (4), programmable power supply (9), biasing resistor (6), the 2nd DA transducer (10), electro kinetic potential device (7), feedback resistance (11) and power supply (8);
Described power supply (8) and amplifier (5), AD converter (2), microprocessor (3), the one DA transducer (4), programmable power supply (9), the 2nd DA transducer (10) is connected with electro kinetic potential device (7), working power is provided, one end of sampling resistor (1) is connected with the first input end of amplifier (5), gather input signal, the other end of sampling resistor (1) is connected with the input of microprocessor (3) by AD converter (2), the signal that collects is sent in the microprocessor after the AD conversion and is judged, first output of microprocessor (3) is connected with programmable power supply (9) by a DA transducer (4), the output voltage of microprocessor output control signal control programmable power supply after the DA conversion, programmable power supply (9) is connected with an end of biasing resistor (6), provide bias voltage to biasing resistor, the other end of biasing resistor (6) is connected with an end of electro kinetic potential device (7), the other end ground connection of electro kinetic potential device (7), second output of microprocessor (3) connects the control end of electro kinetic potential device (7) by the 2nd DA transducer (10), microprocessor output control signal is regulated the electro kinetic potential device after the DA conversion resistance, the second input termination biasing resistor (6) of amplifier (5) and the tie point of electro kinetic potential device (7), obtain the reverse input voltage of amplifier, the output of amplifier (5) is connected with second input by feedback resistance (11), forms feedback loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320032724 CN203057089U (en) | 2013-01-22 | 2013-01-22 | Amplifier capable of controlling operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320032724 CN203057089U (en) | 2013-01-22 | 2013-01-22 | Amplifier capable of controlling operating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203057089U true CN203057089U (en) | 2013-07-10 |
Family
ID=48740005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320032724 Withdrawn - After Issue CN203057089U (en) | 2013-01-22 | 2013-01-22 | Amplifier capable of controlling operating mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203057089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095239A (en) * | 2013-01-22 | 2013-05-08 | 西南大学 | Amplifier capable of controlling operating modes |
| CN108768328A (en) * | 2018-07-10 | 2018-11-06 | 中国地质大学（武汉） | A kind of low-frequency electronic communication system |
-
2013
- 2013-01-22 CN CN 201320032724 patent/CN203057089U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095239A (en) * | 2013-01-22 | 2013-05-08 | 西南大学 | Amplifier capable of controlling operating modes |
| CN103095239B (en) * | 2013-01-22 | 2016-01-06 | 西南大学 | A kind of amplifier that can control mode of operation |
| CN108768328A (en) * | 2018-07-10 | 2018-11-06 | 中国地质大学（武汉） | A kind of low-frequency electronic communication system |
| CN108768328B (en) * | 2018-07-10 | 2023-07-14 | 中国地质大学（武汉） | Low-frequency electronic communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203057089U (en) | Amplifier capable of controlling operating mode | |
| CN203799196U (en) | Single point double control electronic switch | |
| CN204794932U (en) | Pin drive circuit | |
| CN103095239B (en) | A kind of amplifier that can control mode of operation | |
| CN208572043U (en) | A kind of multi-channel high frequency power amplifier | |
| CN203422416U (en) | High-end current detection circuit | |
| CN208955894U (en) | A kind of driving circuit of positive-negative power power supply half-bridge circuit | |
| CN201008135Y (en) | Audio frequency power amplifier with voltage current negative feedback regulation function | |
| CN102751975A (en) | PWM (Pulse-Width Modulation) and AI (Artificial Intelligence) multiplexing port and controller | |
| CN102843075A (en) | Novel underground motor drive circuit | |
| CN203276994U (en) | Multi-range electronic resistor | |
| CN201947240U (en) | Transmitter circuit with various kinds of signal output | |
| CN204536809U (en) | A kind of intelligent switch quantity constrained input module | |
| CN201185409Y (en) | Multipath double track audio commutation circuit | |
| CN202533755U (en) | Sampling circuit for paperless recording instrument | |
| CN209200926U (en) | A kind of system of self-locking software controlling power circuit on-off | |
| CN202918233U (en) | Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan | |
| CN207426980U (en) | A kind of ON-OFF control circuit | |
| CN202503480U (en) | Low distortion gain-controlled circuit | |
| CN206574645U (en) | Unicoil magnetic latching relay and its drive circuit | |
| CN110955185A (en) | Superconducting switch heater power supply based on operational amplifier | |
| CN202948357U (en) | Constant-current constant-power implementation circuit | |
| CN206135717U (en) | Protect high -power system device's voltage output controlling means | |
| CN205430184U (en) | Digital display formula hydraulic pressure proportional amplifier | |
| CN204613804U (en) | The circuit of configurable output four kinds of simulating signals of three amplifier compositions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |