CN204576332U - A kind of power supply terminal mu balanced circuit of improvement - Google Patents
A kind of power supply terminal mu balanced circuit of improvement Download PDFInfo
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- CN204576332U CN204576332U CN201520254415.1U CN201520254415U CN204576332U CN 204576332 U CN204576332 U CN 204576332U CN 201520254415 U CN201520254415 U CN 201520254415U CN 204576332 U CN204576332 U CN 204576332U
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Abstract
The utility model discloses a kind of power supply terminal mu balanced circuit of improvement, after bridge rectifier circuit rectification, twice filtering is carried out respectively by the first electric capacity and the first inductance and the second inductance, first metal-oxide-semiconductor and the first inductance carry out lead and lag process to undesired signal in time domain, and the break-make eventually through the second metal-oxide-semiconductor controls the filter in frequency domain scope of whole circuit.The utility model can improve the deficiencies in the prior art, while providing good voltage stabilizing function, simplify circuit structure.
Description
Technical field
The utility model relates to a kind of circuit structure, especially a kind of power supply terminal mu balanced circuit of improvement.
Background technology
When using some for the electrical equipment that voltage stability requirement is higher, needing to install voltage stabilizer additional at the electric terminal of electrical equipment, filtration being carried out to the voltage fluctuation in supply line and weakens.Existing voltage regulator circuit is in order to filter the interference of each frequency, and need to arrange multiple bandwidth-limited circuit, complex structure, power consumption is high.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of power supply terminal mu balanced circuit of improvement, can solve the deficiencies in the prior art, while providing good voltage stabilizing function, simplify circuit structure.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of power supply terminal mu balanced circuit of improvement, power input is connected to the input end of bridge rectifier circuit, the output terminal of bridge rectifier circuit is parallel with two branch roads, first branch road is the first electric capacity and first resistance of series connection, second branch road is the first inductance and second inductance of series connection, the tie point of the first electric capacity and the first inductance is connected to the drain electrode of the first metal-oxide-semiconductor by the second resistance, the grid of the first metal-oxide-semiconductor is connected to the tie point of the first electric capacity and the first inductance, the source electrode of the first metal-oxide-semiconductor is connected on the tie point of the second inductance and the first resistance by the 3rd resistance of series connection and the 4th resistance, the tie point of the 3rd resistance and the 4th resistance is connected to the reverse input end of the first amplifier by the 5th resistance, the positive input of the first amplifier is by the 6th resistance eutral grounding, the reverse input end of the first amplifier is connected to the output terminal of the first amplifier by the second electric capacity in parallel and the 7th resistance, the output terminal of the first amplifier is connected to the positive input of the second amplifier by the 8th resistance, the tie point of the first inductance and the second inductance is connected to the reverse input end of the second amplifier by the 9th resistance, the positive input of the second amplifier is by the tenth resistance eutral grounding, the reverse input end of the second amplifier is connected to the output terminal of the second amplifier by the 11 resistance, the output terminal of the second amplifier is connected to the grid of the second metal-oxide-semiconductor by the 12 resistance, the drain electrode of the second metal-oxide-semiconductor (is connected to the tie point of the first inductance and the second inductance by the 13 resistance, the source electrode of the second metal-oxide-semiconductor is connected to the tie point of the second inductance and the first resistance by the 3rd electric capacity.
The beneficial effect adopting technique scheme to bring is: two branch roads that the utility model is arranged on bridge rectifier circuit output terminal are respectively two independently filtering circuits.The filtering circuit of the first electric capacity and the first resistance composition tentatively filters voltage fluctuation larger in circuit.First inductance and the first amplifier distinguish remaining voltage fluctuation interference in catching circuits, and in time domain, lead and lag process is carried out to undesired signal, second amplifier merges treated signal, and control the break-make of the second metal-oxide-semiconductor, thus realize the 3rd electric capacity and be connected with the selectivity of the second inductance, according to making whole mu balanced circuit can change filter in frequency domain scope in real time according to the change of voltage fluctuation, achieve the filtering voltage regulation of wide frequency domain.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment.
In figure: IN, power input; D, bridge rectifier circuit; R1, the first resistance; R2, the second resistance tube; R3, the 3rd resistance; R4, the 4th resistance; R5, the 5th resistance; R6, the 6th resistance; R7, the 7th resistance; R8, the 8th resistance; R9, the 9th resistance; R10, the tenth resistance; R11, the 11 resistance; R12, the 12 resistance; R13, the 13 resistance; C1, the first electric capacity; C2, the second electric capacity; C3, the 3rd electric capacity; A1, the first amplifier; A2, the second amplifier; L1, the first inductance; L2, the second inductance; Q1, the first metal-oxide-semiconductor; Q2, the second metal-oxide-semiconductor.
Embodiment
With reference to Fig. 1, the power input IN of the utility model embodiment is connected to the input end of bridge rectifier circuit D, the output terminal of bridge rectifier circuit D is parallel with two branch roads, first branch road is the first electric capacity C1 and the first resistance R1 of series connection, second branch road is the first inductance L 1 and the second inductance L 2 of series connection, the tie point of the first electric capacity C1 and the first inductance L 1 is connected to the drain electrode of the first metal-oxide-semiconductor Q1 by the second resistance R2, the grid of the first metal-oxide-semiconductor Q1 is connected to the tie point of the first electric capacity C1 and the first inductance L 1, the source electrode of the first metal-oxide-semiconductor Q1 is connected on the tie point of the second inductance L 2 and the first resistance R1 by the 3rd resistance R3 of series connection and the 4th resistance R4, the tie point of the 3rd resistance R3 and the 4th resistance R4 is connected to the reverse input end of the first amplifier A1 by the 5th resistance R5, the positive input of the first amplifier A1 is by the 6th resistance R6 ground connection, the reverse input end of the first amplifier A1 is connected to the output terminal of the first amplifier A1 by the second electric capacity C2 in parallel and the 7th resistance R7, the output terminal of the first amplifier A1 is connected to the positive input of the second amplifier A2 by the 8th resistance R8, the tie point of the first inductance L 1 and the second inductance L 2 is connected to the reverse input end of the second amplifier A2 by the 9th resistance R9, the positive input of the second amplifier A2 is by the tenth resistance R10 ground connection, the reverse input end of the second amplifier A2 is connected to the output terminal of the second amplifier A2 by the 11 resistance R11, the output terminal of the second amplifier A2 is connected to the grid of the second metal-oxide-semiconductor Q2 by the 12 resistance R12, the drain electrode of the second metal-oxide-semiconductor Q2 is connected to the tie point of the first inductance L 1 and the second inductance L 2 by the 13 resistance R13, the source electrode of the second metal-oxide-semiconductor Q2 is connected to the tie point of the second inductance L 2 and the first resistance R1 by the 3rd electric capacity C3.The filtering circuit of the first electric capacity and the first resistance composition tentatively filters voltage fluctuation larger in circuit.First inductance L 1 and the first amplifier A1 distinguish remaining voltage fluctuation interference in catching circuits, and in time domain, lead and lag process is carried out to undesired signal, second amplifier A2 merges treated signal, and control the break-make of the second metal-oxide-semiconductor Q2, thus realize the 3rd electric capacity C3 and be connected with the selectivity of the second inductance L 2, according to making whole mu balanced circuit can change filter in frequency domain scope in real time according to the change of voltage fluctuation, achieve the filtering voltage regulation of wide frequency domain.
Wherein, the first resistance R1 is 450k Ω, and the second resistance R2 is 100k Ω, and the 3rd resistance R3 is 120k Ω, and the 4th resistance R4 is 60k Ω, and the 5th resistance R5 is 65k Ω.6th resistance R6 is 75k Ω, and the 7th resistance R7 is 100k Ω, and the 8th resistance R8 and the 9th resistance R9 is 50 k Ω, and the tenth resistance R10 is 80 k Ω, the 11 resistance R11 is 30 k Ω, and the 12 resistance R12 is 55 k Ω, and the 13 resistance R13 is 110 k Ω.First electric capacity C1 is 350 μ F, and the second electric capacity C2 is 55 μ F, and the 3rd electric capacity is 770 μ F, and the first inductance is 1.2mH, and the second inductance L 2 is 0.9mH.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions 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 (1)
1. the power supply terminal mu balanced circuit improved, it is characterized in that: power input (IN) is connected to the input end of bridge rectifier circuit (D), the output terminal of bridge rectifier circuit (D) is parallel with two branch roads, first branch road is the first electric capacity (C1) and first resistance (R1) of series connection, second branch road is the first inductance (L1) and second inductance (L2) of series connection, the tie point of the first electric capacity (C1) and the first inductance (L1) is connected to the drain electrode of the first metal-oxide-semiconductor (Q1) by the second resistance (R2), the grid of the first metal-oxide-semiconductor (Q1) is connected to the tie point of the first electric capacity (C1) and the first inductance (L1), the source electrode of the first metal-oxide-semiconductor (Q1) is connected on the tie point of the second inductance (L2) and the first resistance (R1) by the 3rd resistance (R3) of series connection and the 4th resistance (R4), the tie point of the 3rd resistance (R3) and the 4th resistance (R4) is connected to the reverse input end of the first amplifier (A1) by the 5th resistance (R5), the positive input of the first amplifier (A1) is by the 6th resistance (R6) ground connection, the reverse input end of the first amplifier (A1) is connected to the output terminal of the first amplifier (A1) by the second electric capacity (C2) in parallel and the 7th resistance (R7), the output terminal of the first amplifier (A1) is connected to the positive input of the second amplifier (A2) by the 8th resistance (R8), the tie point of the first inductance (L1) and the second inductance (L2) is connected to the reverse input end of the second amplifier (A2) by the 9th resistance (R9), the positive input of the second amplifier (A2) is by the tenth resistance (R10) ground connection, the reverse input end of the second amplifier (A2) is connected to the output terminal of the second amplifier (A2) by the 11 resistance (R11), the output terminal of the second amplifier (A2) is connected to the grid of the second metal-oxide-semiconductor (Q2) by the 12 resistance (R12), the drain electrode of the second metal-oxide-semiconductor (Q2) is connected to the tie point of the first inductance (L1) and the second inductance (L2) by the 13 resistance (R13), the source electrode of the second metal-oxide-semiconductor (Q2) is connected to the tie point of the second inductance (L2) and the first resistance (R1) by the 3rd electric capacity (C3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520254415.1U CN204576332U (en) | 2015-04-25 | 2015-04-25 | A kind of power supply terminal mu balanced circuit of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520254415.1U CN204576332U (en) | 2015-04-25 | 2015-04-25 | A kind of power supply terminal mu balanced circuit of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204576332U true CN204576332U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520254415.1U Expired - Fee Related CN204576332U (en) | 2015-04-25 | 2015-04-25 | A kind of power supply terminal mu balanced circuit of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204576332U (en) |
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2015
- 2015-04-25 CN CN201520254415.1U patent/CN204576332U/en not_active Expired - Fee Related
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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: 20150819 Termination date: 20160425 |