CN205356282U - Filter circuit of radiation dose detector - Google Patents
Filter circuit of radiation dose detector Download PDFInfo
- Publication number
- CN205356282U CN205356282U CN201620109428.4U CN201620109428U CN205356282U CN 205356282 U CN205356282 U CN 205356282U CN 201620109428 U CN201620109428 U CN 201620109428U CN 205356282 U CN205356282 U CN 205356282U
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- electric capacity
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Abstract
The utility model discloses a filter circuit of radiation dose detector, the first resistance of signal input part through establishing ties, the positive going input end that a preceding stage filter and a capacitance connection were put to first fortune, the preceding stage filter includes two parallelly connected electric capacity branch roads, second electric capacity and third electric capacity that first electric capacity route is established ties are formed, fourth electric capacity and the 5th electric capacity that a second electric capacity route is established ties are formed, be connected to between fourth electric capacity and the 5th electric capacity through first inductance between second electric capacity and the third electric capacity, through the 6th capacity ground between fourth electric capacity and the 5th electric capacity, the output of putting through second ohmic connection to first fortune between preceding stage filter and the first electric capacity, the positive going input end that first fortune was put is through the 3rd grounding, the reverse input end that first fortune was put passes through fourth grounding. The utility model discloses the not enough of prior art can be improved, the interference killing feature of detector has been improved.
Description
Technical field
This utility model relates to irradiation dose detection technique field, the filter circuit of especially a kind of irradiation dose detector.
Background technology
When using radioactive source to carry out irradiation operation, the metering of its irradiation dose is most important for the safety of work process.If existing irradiation dose detector in use runs into the electromagnetic interference in the external world, it may appear that bigger error so that the use environmental requirement of detector is very harsh.
Utility model content
The technical problems to be solved in the utility model is to provide the filter circuit of a kind of irradiation dose detector, it is possible to solves the deficiencies in the prior art, improves the capacity of resisting disturbance of detector.
For solving above-mentioned technical problem, technical solution adopted in the utility model is as follows.
A kind of filter circuit of irradiation dose detector, the signal input part the first resistance by connecting, prime filter and the first electric capacity are connected to the positive input of the first amplifier, prime filter includes two capacitive branch in parallel, first capacitive branch is made up of the second electric capacity connected and the 3rd electric capacity, second capacitive branch is made up of the 4th electric capacity connected and the 5th electric capacity, by the first inductance connection between the 4th electric capacity and the 5th electric capacity between second electric capacity and the 3rd electric capacity, by the 6th capacity earth between 4th electric capacity and the 5th electric capacity, it is connected to the outfan of the first amplifier by the second resistance between prime filter and the first electric capacity, the positive input of the first amplifier passes through the 3rd resistance eutral grounding, the reverse input end of the first amplifier passes through the 4th resistance eutral grounding, the reverse input end of the first amplifier is connected to the outfan of the first amplifier by the 5th resistance, the outfan of the first amplifier is connected to the base stage of audion, the outfan of the first amplifier is connected to the colelctor electrode of audion by the 6th resistance, the emitter stage of audion is by the second inductance connected and the 7th resistance eutral grounding, it is connected between the second inductance and the 7th resistance by the 7th electric capacity between prime filter and the first electric capacity, it is connected to signal output part by the 8th resistance between second inductance and the 7th resistance.
What employing technique scheme was brought has the beneficial effects that: this utility model is by arranging prime filter, input signal is carried out prefilter, then the break-make of audion is controlled according to the change of signal, it is achieved the flexible intervention of the rear class filter being made up of the first amplifier.This utility model can realize pointed filter action for the change of input signal, and anti-jamming effectiveness is good.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of one detailed description of the invention of this utility model.
In figure: 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；C1, the first electric capacity；C2, the second electric capacity；C3, the 3rd electric capacity；C4, the 4th electric capacity；C5, the 5th electric capacity；C6, the 6th electric capacity；C7, the 7th electric capacity；L1, the first inductance；L2, the second inductance；Q, audion；A1, the first amplifier；IN, signal input part；OUT, signal output part.
Detailed description of the invention
With reference to Fig. 1, the signal input part IN of one detailed description of the invention of this utility model the first resistance R1 by connecting, prime filter and the first electric capacity C1 are connected to the positive input of the first amplifier A1, prime filter includes two capacitive branch in parallel, first capacitive branch is made up of the second electric capacity C2 and the three electric capacity C3 connected, second capacitive branch is made up of the 4th electric capacity C4 and the five electric capacity C5 connected, it is connected between the 4th electric capacity C4 and the 5th electric capacity C5 by the first inductance L1 between second electric capacity C2 and the 3rd electric capacity C3, by the 6th electric capacity C6 ground connection between 4th electric capacity C4 and the 5th electric capacity C5, it is connected to the outfan of the first amplifier A1 by the second resistance R2 between prime filter and the first electric capacity C1, the positive input of the first amplifier A1 passes through the 3rd resistance R3 ground connection, the reverse input end of the first amplifier A1 passes through the 4th resistance R4 ground connection, the reverse input end of the first amplifier A1 is connected to the outfan of the first amplifier A1 by the 5th resistance R5, the outfan of the first amplifier A1 is connected to the base stage of audion Q, the outfan of the first amplifier A1 is connected to the colelctor electrode of audion Q by the 6th resistance R6, the emitter stage of audion Q the second inductance L2 and the seven resistance R7 ground connection by connecting, it is connected between the second inductance L2 and the 7th resistance R7 by the 7th electric capacity C7 between prime filter and the first electric capacity C1, it is connected to signal output part OUT by the 8th resistance R8 between second inductance L2 and the 7th resistance R7.
Wherein, the first resistance R1 is 75k Ω, the second resistance R2 be 165k Ω, the 3rd resistance R3 be 35k Ω, the 4th resistance R4 is 55k Ω, and the 5th resistance R5 is 100k Ω, and the 6th resistance R6 is 120k Ω, and the 7th resistance R7 is 220k Ω, and the 8th resistance R8 is 150k Ω.First electric capacity C1 is 15 μ F, and the second electric capacity C2 is 75 μ F, the 3rd electric capacity C3 is 75 μ F, and the 4th electric capacity C4 is 200 μ F, and the 5th electric capacity C5 is 200 μ F, and the 6th electric capacity C6 is 50 μ F, and the 7th electric capacity C7 is 135 μ F.First inductance L1 is 0.11mH, and the second inductance L2 is 0.45mH.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (1)
1. the filter circuit of an irradiation dose detector, it is characterized in that: the signal input part (IN) the first resistance (R1) by connecting, prime filter and the first electric capacity (C1) are connected to the positive input of the first amplifier (A1), prime filter includes two capacitive branch in parallel, first capacitive branch is made up of the second electric capacity (C2) connected and the 3rd electric capacity (C3), second capacitive branch is made up of the 4th electric capacity (C4) connected and the 5th electric capacity (C5), it is connected between the 4th electric capacity (C4) and the 5th electric capacity (C5) by the first inductance (L1) between second electric capacity (C2) and the 3rd electric capacity (C3), by the 6th electric capacity (C6) ground connection between 4th electric capacity (C4) and the 5th electric capacity (C5), it is connected to the outfan of the first amplifier (A1) by the second resistance (R2) between prime filter and the first electric capacity (C1), the positive input of the first amplifier (A1) passes through the 3rd resistance (R3) ground connection, the reverse input end of the first amplifier (A1) passes through the 4th resistance (R4) ground connection, the reverse input end of the first amplifier (A1) is connected to the outfan of the first amplifier (A1) by the 5th resistance (R5), the outfan of the first amplifier (A1) is connected to the base stage of audion (Q), the outfan of the first amplifier (A1) is connected to the colelctor electrode of audion (Q) by the 6th resistance (R6), the emitter stage of audion (Q) is by the second inductance (L2) connected and the 7th resistance (R7) ground connection, it is connected between the second inductance (L2) and the 7th resistance (R7) by the 7th electric capacity (C7) between prime filter and the first electric capacity (C1), it is connected to signal output part (OUT) by the 8th resistance (R8) between second inductance (L2) and the 7th resistance (R7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109428.4U CN205356282U (en) | 2016-02-03 | 2016-02-03 | Filter circuit of radiation dose detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109428.4U CN205356282U (en) | 2016-02-03 | 2016-02-03 | Filter circuit of radiation dose detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205356282U true CN205356282U (en) | 2016-06-29 |
Family
ID=56182970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620109428.4U Expired - Fee Related CN205356282U (en) | 2016-02-03 | 2016-02-03 | Filter circuit of radiation dose detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205356282U (en) |
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2016
- 2016-02-03 CN CN201620109428.4U patent/CN205356282U/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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 071100 No. 25 East Street, Qingyuan District, Hebei, Baoding Patentee after: HEBEI HELI TONGFANG IRRADIATION TECHNOLOGY CO.,LTD. Address before: 071100 No. 25 East Street, Qingyuan District, Hebei, Baoding Patentee before: BAODING HELIYUAN IRRADIATION Co.,Ltd. |
|
| 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: 20160629 Termination date: 20220203 |