CN205051664U - Filter - Google Patents
Filter Download PDFInfo
- Publication number
- CN205051664U CN205051664U CN201520278394.7U CN201520278394U CN205051664U CN 205051664 U CN205051664 U CN 205051664U CN 201520278394 U CN201520278394 U CN 201520278394U CN 205051664 U CN205051664 U CN 205051664U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- operational amplifier
- filter
- output
- 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.)
- Expired - Fee Related
Links
Landscapes
- Networks Using Active Elements (AREA)
Abstract
The utility model discloses a filter, it relates to a high pass filter. Filter input U1 links to each other with first electric capacity C1 one end, the C1 other end respectively with second electric capacity C2 one end, first resistance R1 one end links to each other, the second electric capacity C2 other end respectively with second resistance R2 one end, an operational amplifier A1's homophase output links to each other, an operational amplifier A1's inverting input end links to each other with fourth resistance R4 one end, the fourth resistance R4 other end and an operational amplifier A1 output all link to each other with third electric capacity C3 one end, the third electric capacity C3 other end respectively with third resistance R3 one end, second operation amplifier A2's homophase output links to each other, second operation amplifier A2's inverting input end links to each other with the 5th resistance R5 one end, the 5th resistance R5 other end all links to each other with filter output U2 with second operation amplifier A2 output. The utility model discloses the component apolegamy is convenient, with low costs, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of high pass filter, be specifically related to a kind of filter.
Background technology
Filter is a kind of frequency selective device, and specific frequency content in signal can be made to pass through, and other frequency content that greatly decays.In testing apparatus, utilize this frequency-selecting effect of filter, can filtering interfering noise or carry out spectrum analysis.And high pass filter allows that high-frequency signal passes through but weakens the filter that (or reduce) frequency passes through lower than cut-off frequency signal.Current high pass filter kind is on the market a lot, but it is unreliable to work, and practicality is not strong.
Utility model content
For the deficiency that prior art exists, the utility model object is to provide a kind of filter, and element apolegamy is convenient, cost is low, and working temperature is reliable, practical.
To achieve these goals, the utility model realizes by the following technical solutions: filter, comprise the first electric capacity C1-the 3rd electric capacity C3, first resistance R1-the 5th resistance R5, first operational amplifier A 1, second operational amplifier A 2, filter input end U1 is connected with first electric capacity C1 one end, the C1 other end respectively with second electric capacity C2 one end, first resistance R1 one end is connected, the second electric capacity C2 other end respectively with second resistance R2 one end, the in-phase output end of the first operational amplifier A 1 is connected, the inverting input of the first operational amplifier A 1 is connected with the 4th resistance R4 one end, the 4th resistance R4 other end is all connected with the 3rd electric capacity C3 one end with the first operational amplifier A 1 output, the 3rd electric capacity C3 other end respectively with the 3rd resistance R3 one end, the in-phase output end of the second operational amplifier A 2 is connected, the inverting input of the second operational amplifier A 2 is connected with the 5th resistance R5 one end, the 5th resistance R5 other end is all connected with filter output U2 with the second operational amplifier A 2 output.
The apolegamy of the utility model element is convenient, cost is low, and working temperature is reliable, practical.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
With reference to Fig. 1, this embodiment is by the following technical solutions: filter, comprise the first electric capacity C1-the 3rd electric capacity C3, first resistance R1-the 5th resistance R5, first operational amplifier A 1, second operational amplifier A 2, filter input end U1 is connected with first electric capacity C1 one end, the C1 other end respectively with second electric capacity C2 one end, first resistance R1 one end is connected, the second electric capacity C2 other end respectively with second resistance R2 one end, the in-phase output end of the first operational amplifier A 1 is connected, the inverting input of the first operational amplifier A 1 is connected with the 4th resistance R4 one end, the 4th resistance R4 other end is all connected with the 3rd electric capacity C3 one end with the first operational amplifier A 1 output, the 3rd electric capacity C3 other end respectively with the 3rd resistance R3 one end, the in-phase output end of the second operational amplifier A 2 is connected, the inverting input of the second operational amplifier A 2 is connected with the 5th resistance R5 one end, the 5th resistance R5 other end is all connected with filter output U2 with the second operational amplifier A 2 output.
The high pass filter of this embodiment removes low-frequency component unnecessary in signal, removes the filter of low-frequency disturbance; In electric power system, with high pass filter filtering certain and above each harmonic thereof during harmonic compensation.High pass filter refers in vehicle-mounted power amplifier and medium, high frequency signal can be allowed to pass through and do not allow the circuit that low frequency signal passes through, its effect be the bass contribution in elimination audio signal, and enhancing middle pitch and treble contribution are to drive middle pitch and the voice unit of loud speaker.
The apolegamy of this embodiment element is convenient, cost is low, and working temperature is reliable, practical.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. filter, it is characterized in that, comprise the first electric capacity (C1)-three electric capacity (C3), first resistance (R1)-five resistance (R5), first operational amplifier (A1), second operational amplifier (A2), filter input end (U1) is connected with the first electric capacity (C1) one end, (C1) other end respectively with the second electric capacity (C2) one end, first resistance (R1) one end is connected, second electric capacity (C2) other end respectively with the second resistance (R2) one end, the in-phase output end of the first operational amplifier (A1) is connected.
2. filter according to claim 1, it is characterized in that, the inverting input of the first operational amplifier (A1) is connected with the 4th resistance (R4) one end, 4th resistance (R4) other end and the first operational amplifier (A1) output are all connected with the 3rd electric capacity (C3) one end, 3rd electric capacity (C3) other end respectively with the 3rd resistance (R3) one end, the in-phase output end of the second operational amplifier (A2) is connected, the inverting input of the second operational amplifier (A2) is connected with the 5th resistance (R5) one end, 5th resistance (R5) other end is all connected with filter output (U2) with the second operational amplifier (A2) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278394.7U CN205051664U (en) | 2015-04-30 | 2015-04-30 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278394.7U CN205051664U (en) | 2015-04-30 | 2015-04-30 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205051664U true CN205051664U (en) | 2016-02-24 |
Family
ID=55345206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520278394.7U Expired - Fee Related CN205051664U (en) | 2015-04-30 | 2015-04-30 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205051664U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374876A (en) * | 2016-08-31 | 2017-02-01 | 安徽赛福电子有限公司 | Photoelectric conversion filter circuit |
| CN106374877A (en) * | 2016-08-31 | 2017-02-01 | 安徽赛福电子有限公司 | Adjustable photoelectric conversion filter circuit |
-
2015
- 2015-04-30 CN CN201520278394.7U patent/CN205051664U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374876A (en) * | 2016-08-31 | 2017-02-01 | 安徽赛福电子有限公司 | Photoelectric conversion filter circuit |
| CN106374877A (en) * | 2016-08-31 | 2017-02-01 | 安徽赛福电子有限公司 | Adjustable photoelectric conversion filter circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203416230U (en) | Filter | |
| CN205051664U (en) | Filter | |
| CN103888876A (en) | Earphone noise processing circuit and earphones | |
| CN204101170U (en) | Hummer testing circuit | |
| CN203675303U (en) | Band-varied adaptive gain control system used for audio electronic product | |
| CN204156830U (en) | A kind of filter | |
| CN203563186U (en) | Noise reduction circuit and voice audio driving circuit provided with same | |
| CN204929209U (en) | Microphone monomer that restraines resonance | |
| CN204304948U (en) | A kind of high-pass filter | |
| CN203912166U (en) | Active band stop filter circuit | |
| CN202634678U (en) | Noise-reduction circuit | |
| CN204104105U (en) | A kind of circuit of Earphone Amplifier | |
| CN208015982U (en) | Audio frequency broadcast system based on bandpass filter | |
| CN203057465U (en) | Filtering noise-reduction audio frequency circuit | |
| CN204697020U (en) | A kind of dual output constant current-supplying circuit for preamplifier | |
| CN203522664U (en) | Tone control circuit | |
| CN204290906U (en) | Utilize operational amplifier as the filter of voltage follower | |
| CN205793148U (en) | A kind of low noise moves ferrum earphone | |
| CN204392203U (en) | A kind of absolute filter | |
| CN104300926A (en) | Audio power amplifier used for multimedia electronic equipment | |
| CN107579722A (en) | A kind of electronic communication wave filter | |
| CN203279022U (en) | Audio playing circuit and TV | |
| CN205430186U (en) | Big data transmission's anti -jamming circuit | |
| CN203057464U (en) | Dynamic filtering sounding device | |
| CN209001910U (en) | A kind of IP speaker power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20160430 |