CN204615650U - A kind of power supply circuits of bill payment device - Google Patents
A kind of power supply circuits of bill payment device Download PDFInfo
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- CN204615650U CN204615650U CN201520307500.XU CN201520307500U CN204615650U CN 204615650 U CN204615650 U CN 204615650U CN 201520307500 U CN201520307500 U CN 201520307500U CN 204615650 U CN204615650 U CN 204615650U
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Abstract
The utility model discloses a kind of power supply circuits of bill payment device, comprise the three grades of filter structures be connected in series, first order filter structure comprises the first inductance and the first electric capacity, second level filter structure comprises triode, the first amplifier and the second amplifier, and third level filter structure comprises the 3rd electric capacity and the 4th electric capacity.The utility model can improve the deficiencies in the prior art, simplifies circuit structure.
Description
Technical field
The utility model relates to a kind of bill payment device, especially a kind of power supply circuits of bill payment device.
Background technology
Along with the development of mechanics of communication, telephone expenses pay the on-line operation achieving 24 hours gradually, and it is very convenient to use.In order to maintain the safe operation of payment mechanism, its electric supply installation needs to have higher safety and stability.Existing power supply circuits are in order to improve it for electrical stability, and complex structure, is unfavorable for the miniaturization of equipment.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of power supply circuits of bill payment device, can solve the deficiencies in the prior art, 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 circuits of bill payment device, power input is connected to power output end by the first inductance in parallel and the first resistance, power input is by the first capacity earth, power output end is connected to the collector electrode of triode by the second resistance, the base stage of triode is connected to power output end by the 3rd resistance, the emitter of triode is by the 4th resistance and the second inductance ground connection, the emitter of triode is connected to the positive input of the first amplifier by the 5th resistance, the reverse input end of the first amplifier is by the 6th grounding through resistance, the positive input of the first amplifier is connected to the output of the second amplifier by the 7th resistance, the reverse input end of the second amplifier is connected to the output of the second amplifier by the second electric capacity, the positive input of the second amplifier is by the 8th grounding through resistance, the reverse input end of the second amplifier is connected to the output of the first amplifier by the 9th resistance, power output end is by the 3rd electric capacity and the 4th capacity earth, the output of the first amplifier is connected between the 3rd electric capacity and the 4th electric capacity.
The beneficial effect adopting technique scheme to bring is: the utility model adopts three grades of filter structures, and first order filter structure is made up of the first inductance and the first electric capacity, and the first resistance realizes the dynamic equilibrium of first order filter circuit as balance resistance.Second level filtration is made up of triode and the first amplifier, the second amplifier, second inductance serves the effect of current limliting, the output of second level filter structure changes according to the fluctuation of input voltage, and then the potential difference changed between the 3rd electric capacity and the 4th electric capacity, the third level filter structure realizing being made up of the 3rd electric capacity and the 4th electric capacity carries out active adjustment according to voltage fluctuation, improves the filter effect of whole filter circuit.The utility model structure is simple, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment.
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; R9, the 9th resistance; C1, the first electric capacity; C2, the second electric capacity; C3, the 3rd electric capacity; C4, the 4th electric capacity; L1, the first inductance; L2, the second inductance; Q, triode; A1, the first amplifier; A2, the second amplifier; IN, power input; OUT, power output end.
Embodiment
With reference to Fig. 1, the power input IN of the utility model embodiment is connected to power output end OUT by the first inductance L 1 in parallel and the first resistance R1, power input IN is by the first electric capacity C1 ground connection, power output end OUT is connected to the collector electrode of triode Q by the second resistance R2, the base stage of triode Q is connected to power output end OUT by the 3rd resistance R3, the emitter of triode Q is by the 4th resistance R4 and the second inductance L 2 ground connection, the emitter of triode Q is connected to the positive input of the first amplifier A1 by the 5th resistance R5, the reverse input end of the first amplifier A1 is by the 6th resistance R6 ground connection, the positive input of the first amplifier A1 is connected to the output of the second amplifier A2 by the 7th resistance R7, the reverse input end of the second amplifier A2 is connected to the output of the second amplifier A2 by the second electric capacity C2, the positive input of the second amplifier A2 is by the 8th resistance R8 ground connection, the reverse input end of the second amplifier A2 is connected to the output of the first amplifier A1 by the 9th resistance R9, power output end OUT is by the 3rd electric capacity C3 and the 4th electric capacity C4 ground connection, the output of the first amplifier A1 is connected between the 3rd electric capacity C3 and the 4th electric capacity C4.The present embodiment adopts three grades of filter structures, and first order filter structure is made up of the first inductance L 1 and the first electric capacity C1, and the first resistance R1 realizes the dynamic equilibrium of first order filter circuit as balance resistance.Second level filtration is made up of triode Q and the first amplifier A1, the second amplifier A2, second inductance L 2 serves the effect of current limliting, the output of second level filter structure changes according to the fluctuation of input voltage, and then the potential difference changed between the 3rd electric capacity C3 and the 4th electric capacity C4, the third level filter structure realizing being made up of the 3rd electric capacity C3 and the 4th electric capacity C4 carries out active adjustment according to voltage fluctuation, improves the filter effect of whole filter circuit.The utility model structure is simple, and reliability is high.
Wherein, the first resistance R1 is 45k Ω, the second resistance R2 is 70k Ω, the 3rd resistance R3 is 100k Ω, the 4th resistance R4 is 50k Ω, and the 5th resistance R5 is 50k Ω, and the 6th resistance R6 is 120k Ω, and the 7th resistance R7 is 110k Ω; 8th resistance R8 is 75k Ω, and the 9th resistance R9 is 125k Ω.First electric capacity C1 is 700 μ F, and the second electric capacity C2 is 70 μ F, and the 3rd electric capacity C3 is 300 μ F, and the 4th electric capacity C4 is 300 μ F, and the first inductance L 1 is 1.2mH, and the second inductance L 2 is 0.75mH.
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 (1)
1. the power supply circuits of a bill payment device, it is characterized in that: power input (IN) is connected to power output end (OUT) by the first inductance (L1) in parallel and the first resistance (R1), power input (IN) is by the first electric capacity (C1) ground connection, power output end (OUT) is connected to the collector electrode of triode (Q) by the second resistance (R2), the base stage of triode (Q) is connected to power output end (OUT) by the 3rd resistance (R3), the emitter of triode (Q) is by the 4th resistance (R4) and the second inductance (L2) ground connection, the emitter of triode (Q) is connected to the positive input of the first amplifier (A1) by the 5th resistance (R5), the reverse input end of the first amplifier (A1) is by the 6th resistance (R6) ground connection, the positive input of the first amplifier (A1) is connected to the output of the second amplifier (A2) by the 7th resistance (R7), the reverse input end of the second amplifier (A2) is connected to the output of the second amplifier (A2) by the second electric capacity (C2), the positive input of the second amplifier (A2) is by the 8th resistance (R8) ground connection, the reverse input end of the second amplifier (A2) is connected to the output of the first amplifier (A1) by the 9th resistance (R9), power output end (OUT) is by the 3rd electric capacity (C3) and the 4th electric capacity (C4) ground connection, the output of the first amplifier (A1) is connected between the 3rd electric capacity (C3) and the 4th electric capacity (C4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307500.XU CN204615650U (en) | 2015-05-14 | 2015-05-14 | A kind of power supply circuits of bill payment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307500.XU CN204615650U (en) | 2015-05-14 | 2015-05-14 | A kind of power supply circuits of bill payment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204615650U true CN204615650U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520307500.XU Expired - Fee Related CN204615650U (en) | 2015-05-14 | 2015-05-14 | A kind of power supply circuits of bill payment device |
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| CN (1) | CN204615650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067466A (en) * | 2021-05-19 | 2021-07-02 | 上海鸿晔电子科技股份有限公司 | Voltage source circuit and power management chip |
-
2015
- 2015-05-14 CN CN201520307500.XU patent/CN204615650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067466A (en) * | 2021-05-19 | 2021-07-02 | 上海鸿晔电子科技股份有限公司 | Voltage source circuit and power management chip |
| CN113067466B (en) * | 2021-05-19 | 2022-06-24 | 上海鸿晔电子科技股份有限公司 | Voltage source circuit and power management chip |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200514 |