CN204362000U - One carries out gain frequency doubling attenuation circuit to input signal - Google Patents
One carries out gain frequency doubling attenuation circuit to input signal Download PDFInfo
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- CN204362000U CN204362000U CN201420494936.XU CN201420494936U CN204362000U CN 204362000 U CN204362000 U CN 204362000U CN 201420494936 U CN201420494936 U CN 201420494936U CN 204362000 U CN204362000 U CN 204362000U
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- frequency doubling
- frequency
- doubling attenuation
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Abstract
The utility model relates to one and carries out gain frequency doubling attenuation circuit to input signal, belongs to a kind of gain frequency doubling attenuation circuit.Control relay circuit is connected with one-level amplifying circuit respectively with self-inspection modulate circuit, and this one-level amplifying circuit is electrically connected with frequency doubling attenuation circuit, second amplifying circuit, filter circuit, pulse amplifier and three-stage amplifier order.Advantage is that frequency doubling attenuation circuit is placed on after one-level amplification, be applied in special frequency channel, frequency doubling attenuation is passive high three-way filter, all signal lossless higher than upper limiting frequency are passed through, amplitude-versus-frequency curve does not change, attenuated signal enters second amplifying circuit and subordinate's filter, then through pulse amplifier, three-stage amplifier, distortionless after output filtering, strengthen signal.Realize puise gain to control, frequency doubling attenuation in specific frequency range, meet circuit system requirement, reliability is high, electromagnetism interference is stronger.
Description
Technical field
The utility model belongs to a kind of gain frequency doubling attenuation circuit.
Background technology
At present, the Related product used in the application of certain system, adopt discrete electronic devices and components, manufacture form primarily of direct insertion triode, field effect metal-oxide-semiconductor, digital integrated circuit, resistance, inductance and electric capacity etc. that electrical quantity is different, components and parts adopt straight cutting mode to weld in the circuit board.Because discrete component volume, quantity are large, cause the signal connecting line between components and parts long, via hole that wiring board metallizes is many, makes to produce parasitic capacitance and inductance between printed circuit board wiring, via hole, not easily removes, when carrying out the process of signal gain, be subject to environment to make an uproar ripple and electromagnetism noise jamming, signal waveform produce unnecessary burr and clutter, makes overall waveform occur distortion, need manually to carry out waveform adjustment to signal, deburring and clutter.Because each wiring board is different and device electrical parameter has deviation, the reason that problem occurs is also different, and make manual debugging, arrange waveform generation difficulty, the production time lengthens.
Summary of the invention
The utility model provides a kind of and carries out gain frequency doubling attenuation circuit to input signal, and to solve, current small product size is large, poor reliability, electromagnetism interference are poor, the production cycle is long and high in cost of production problem.
The technical scheme that the utility model is taked is: control relay circuit is connected with one-level amplifying circuit respectively with self-inspection modulate circuit, and this one-level amplifying circuit is electrically connected with frequency doubling attenuation circuit, second amplifying circuit, filter circuit, pulse amplifier and three-stage amplifier order.
The utility model has the advantages that novel structure, frequency doubling attenuation circuit is placed on after one-level amplification, is applied in special frequency channel.After faint sensor signal is promoted to the amplitude requirement meeting attenuator circuit work by one-level amplification, the signal amplitude of frequency doubling attenuation in special frequency channel, makes amplitude frequency curve steepening, with the intensity of frequency decreasing signal, plays the effect of frequency doubling attenuation.Frequency doubling attenuation is passive high three-way filter, and all signal lossless higher than upper limiting frequency are passed through, and amplitude-versus-frequency curve does not change.Lower than the signal frequency multiplication decay 2dB ~ 6dB of upper limiting frequency, the lower attenuation of frequency is larger.Special frequency channel is generally between 0.28Hz to 1.3kHz, and they are mounted in the signal of oversampling circuit, and interference subordinate filtering, amplifying circuit work, occur saturation distortion or cause discharge circuit self-excitation, so slacken, it is very important; Attenuated signal enters second amplifying circuit and subordinate's filter, then through pulse amplifier, three-stage amplifier, distortionless after output filtering, strengthen signal.Realize puise gain to control, frequency doubling attenuation in specific frequency range, meets circuit system requirement, reliability is high, and electromagnetism interference is stronger, with short production cycle and cost is low.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model control relay circuit, self-inspection modulate circuit, one-level amplifying circuit, frequency doubling attenuation circuit, second amplifying circuit, filter circuit;
Fig. 3 is the circuit theory diagrams of the utility model filter circuit, pulse amplifier, three-stage amplifier.
Embodiment
Control relay circuit 1 is connected with one-level amplifying circuit 3 respectively with self-inspection modulate circuit 2, and this one-level amplifying circuit is electrically connected with frequency doubling attenuation circuit 4, second amplifying circuit 5, filter circuit 6, pulse amplifier 7 and three-stage amplifier 8 order.
Control relay circuit is for receiving the control signal of input signal and system, and self-inspection modulate circuit is for receiving self-test signal, and pulse amplifier is different with G0, G1, G2 low and high level level, and output gain changes thereupon, and three grades are amplified rear output signal.
Following composition graphs 2 and 3 introduces the utility model further.
Control relay circuit: the break-make adopting dpdt relay control inputs signal and input ground and attenuator circuit inside, Control voltage is direct current 5V, and coil power is not more than 100mW, and relay uses normally-closed contact.
One-level amplifying circuit: adopt operational amplifier to amplify, amplification quantity 10dB.
Self-inspection modulate circuit: form bleeder circuit by 3 resistance, the front end sending into one-level amplification after the output signal dividing potential drop of self-correcting emulation extension set.
Frequency doubling attenuation circuit: adopt the input resistance of coupling capacitance and next stage to form RC high pass filter, 0.28kHz ~ 1.3kHz low frequency signal, when overcoupled circuits, has 2 ~ 6 the dB decay of every octave.
Second amplifying circuit: adopt identical operation amplifier to amplify, amplification quantity 30dB.
Filter circuit: adopt operational amplifier, form oval band pass filter, passband ripple is not more than 0.1dB, in addition every octave decay 30dB, bandwidth is 0.28kHz ~ 9kHz.
Pulse amplifier: adopt LTC6911 programmable integrated circuit, LTC6911 performance is as follows: operating voltage: ± 5V; Different with G0, G1, G2 low and high level level, output gain changes thereupon, and variable quantity is 40dB ± 4dB; Working temperature :-55 DEG C ~ 125 DEG C.
Three-stage amplifier: adopt identical operation amplifier to amplify, amplification quantity 10dB.
Foregoing circuit being placed in volume is that 39.9mm19.9mm × 14.0mm(does not comprise lead-in wire) kovar alloy shell, in gold-plated base, energy storage welding seals.
Claims (1)
1. one kind is carried out gain frequency doubling attenuation circuit to input signal, it is characterized in that: control relay circuit is connected with one-level amplifying circuit respectively with self-inspection modulate circuit, this one-level amplifying circuit is electrically connected with frequency doubling attenuation circuit, second amplifying circuit, filter circuit, pulse amplifier and three-stage amplifier order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494936.XU CN204362000U (en) | 2014-08-31 | 2014-08-31 | One carries out gain frequency doubling attenuation circuit to input signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494936.XU CN204362000U (en) | 2014-08-31 | 2014-08-31 | One carries out gain frequency doubling attenuation circuit to input signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204362000U true CN204362000U (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420494936.XU Active CN204362000U (en) | 2014-08-31 | 2014-08-31 | One carries out gain frequency doubling attenuation circuit to input signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204362000U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301262A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system linear amplifier circuit of air purifier |
| CN106301261A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air purifier air exhauster drive system electromagnetism interference type amplifying circuit |
-
2014
- 2014-08-31 CN CN201420494936.XU patent/CN204362000U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301262A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system linear amplifier circuit of air purifier |
| CN106301261A (en) * | 2016-09-23 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air purifier air exhauster drive system electromagnetism interference type amplifying circuit |
| CN106301262B (en) * | 2016-09-23 | 2019-07-05 | 上海世谛集成电路设计有限公司 | A kind of exhaust fan drive system linear amplifier circuit of air purifier |
| CN106301261B (en) * | 2016-09-23 | 2020-07-03 | 安徽山水城市设计有限公司 | Anti-electromagnetic interference amplification circuit for air purifier exhaust fan driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170417 Address after: 130012 Changchun Torch Road, Jilin, No. 371 Patentee after: Jilin Huayu Semiconductor Co., Ltd. Address before: 130012 Changchun Torch Road, Jilin, No. 371 Patentee before: Li Yanping |
|
| TR01 | Transfer of patent right |