CN202111615U - Resistance-capacitance power supply used for three-phase manganin electric energy meter - Google Patents
Resistance-capacitance power supply used for three-phase manganin electric energy meter Download PDFInfo
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- CN202111615U CN202111615U CN2011202069060U CN201120206906U CN202111615U CN 202111615 U CN202111615 U CN 202111615U CN 2011202069060 U CN2011202069060 U CN 2011202069060U CN 201120206906 U CN201120206906 U CN 201120206906U CN 202111615 U CN202111615 U CN 202111615U
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- voltage stabilizing
- diode
- neutral line
- phase
- stabilizing module
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Abstract
The utility model discloses a resistance-capacitance power supply used for a three-phase manganin electric energy meter. Voltage stabilizing modules, a first voltage stabilizing diode, a second voltage stabilizing diode, a first diode, a second diode, a safety capacitor and a current-limiting resistor are respectively arranged between each of three phases (A, B and C) and a neutral line N, wherein a first diode unit is connected with the input end of the phase line voltage stabilizing module connected with a phase line; a second diode unit is connected with the input end of the neutral line voltage stabilizing module connected with the neutral line; the safety capacitor and the current-limiting resistor are serially connected between the first and the second diode units; the positive pole of the first voltage stabilizing diode is connected with the phase line, and the negative pole of the first diode is connected with the input end of the phase line voltage stabilizing module; the positive pole of the second voltage stabilizing diode is connected with the neutral line, and the negative pole of the second diode is connected with the input end of the neutral line voltage stabilizing module; and the output voltage of the neutral line voltage stabilizing module is loaded on a singlechip of the electric energy meter, and the output voltage of the phase line voltage stabilizing module is loaded on a metering chip of the electric energy meter. The resistance-capacitance power supply provided by the utility model has the advantages of high reliability and low cost without occupying a PCB (Printed Circuit Board).
Description
Technical field
The utility model relates to a kind of capacitance-resistance power supply that is used for three copper-manganese electric energy meters.
Background technology
Adopt the capacitance-resistance power supply of safety electric capacity to have characteristics such as diamagnetism is strong, input voltage is wide, volume is little, light weight, low price, therefore be widely used in fields such as single-phase electric energy meter, all kinds of household electrical appliances.On the three-phase and four-line electric energy meter, use diamagnetism that the capacitance-resistance power supply certainly will improve the three-phase and four-line electric energy meter, design cost etc., make it have good electric property and economic benefit.
Chinese patent has been announced a kind of electric energy meter electric current sample circuit and electric energy meter thereof No. 200620006650.8; It comprises electric energy meter; The three-phase end of incoming cables of three-phase electric energy meter connects the signal input part of manganese copper diverter respectively, and the signal output part of manganese copper diverter connects the signal input part of computation chip respectively.Advantage: the one, adopt shunt to replace the current sampling circuit that current transformer constituted, three-phase circuit is metering separately, and three-phase pulse is by the MCU Unified Treatment, can not only anti-effectively DC component and even-order harmonic, and can resist outside magnetic disturbance by force effectively; The 2nd, volume is little, and cost is low.Its shortcoming is for needing to adopt the transformer or the Switching Power Supply power supply of multichannel output, the hardware designs difficulty and the hardware cost that must increase.
Summary of the invention
For overcoming the above-mentioned shortcoming of prior art, the invention provides a kind of safe, the with low cost capacitance-resistance power supply that is used for three copper-manganese electric energy meters.
Be used for the capacitance-resistance power supply of three copper-manganese electric energy meters, it is characterized in that: A phase, B are mutually or C is mutually every and neutral line N between be equipped with Voltage stabilizing module, first voltage stabilizing didoe, second voltage stabilizing didoe, first diode, second diode, safety electric capacity, and current-limiting resistance;
Parallelly connected formation first diode of first voltage stabilizing didoe with first diode; Parallelly connected formation second diode of second voltage stabilizing didoe with second diode; Described first diode connects the input of the phase line Voltage stabilizing module that links to each other with phase line, and described second diode connects the input of the neutral line Voltage stabilizing module that links to each other with the neutral line; Be in series with safety electric capacity and current-limiting resistance between described first diode and second diode;
The positive pole of described first voltage stabilizing didoe is connected with phase line, and the negative pole of described first diode is connected with the input of described phase line Voltage stabilizing module;
The positive pole of described second voltage stabilizing didoe is connected with the neutral line, and the negative pole of described second diode is connected with the input of described neutral line Voltage stabilizing module;
The output voltage of described neutral line Voltage stabilizing module loads on the single-chip microcomputer of electric energy meter, and the output voltage of described phase line Voltage stabilizing module loads on the computation chip of electric energy meter.
Further; Be provided with first electrochemical capacitor of stored energy between the output of described phase line Voltage stabilizing module and the phase line; Be provided with second electrochemical capacitor between the negative pole of the positive pole of described first voltage stabilizing didoe and first diode; Be provided with the 3rd electrochemical capacitor between the negative pole of described second diode and the neutral line, be provided with the 4th electrochemical capacitor between the output of described neutral line Voltage stabilizing module and the neutral line.
The technical conceive of the utility model is: at power line V
AN, V
BNAnd V
CNThe positive half wave and the negative half wave power supply of the power supply got respectively of two ends.Obtain the two-way power supply and realize metering module and the isolation of MCU module.Adopt the capacitance-resistance power supply of two-way power supply output, saved the power circuit resource, improved the ammeter operating voltage range.
The utlity model has and do not take the PCB resource, reliability is high, advantage with low cost.
The present invention can satisfy the requirement of three-phase and four-line electric energy meter, can meet the needs of single-phase electric energy power supply again, and table meter voltage power supply expanded range, and the circuit resource that do not take up room are with low cost.
Description of drawings
Fig. 1 is a circuit diagram of the present invention.
Embodiment
With reference to accompanying drawing, further specify the utility model:
The capacitance-resistance power supply that is used for three copper-manganese electric energy meters; It is characterized in that: A phase, B are mutually or C is mutually every and neutral line N between be equipped with Voltage stabilizing module, the first voltage stabilizing didoe Z1, Z3, Z5, the second voltage stabilizing didoe Z2, Z4, Z6; The first diode D1, D3, D5; The second diode D2, D4, D6, safety capacitor C 7, C8, C9 and current-limiting resistance R60, R61, R62;
The first voltage stabilizing didoe Z1, Z3, Z5 and the first diode D1, D3, parallelly connected formation first diode of D5; The second voltage stabilizing didoe Z2, Z4, Z6 and the second diode D2, D4, parallelly connected formation second diode of D6; The input VIN of the phase line Voltage stabilizing module U1 that described first diode connection links to each other with phase line, U2, U3, described second diode connects the input VIN of the neutral line Voltage stabilizing module U4 that links to each other with the neutral line; Be in series with safety capacitor C 7, C8, C9 and current-limiting resistance R60, R61, R62 between described first diode and second diode;
The positive pole of the described first voltage stabilizing didoe Z1, Z3, Z5 is connected with phase line VA, VB, VC, and the negative pole of the described first diode D1, D3, D5 is connected with the input of described phase line Voltage stabilizing module U1, U2, U3;
The positive pole of the described second voltage stabilizing didoe Z2, Z4, Z6 is connected with neutral line N, and the negative pole of the described second diode D2, D4, D6 is connected with the input of described neutral line Voltage stabilizing module U4;
The output voltage of described neutral line Voltage stabilizing module U4 loads on the single-chip microcomputer of electric energy meter, and the output voltage of described phase line Voltage stabilizing module U1, U2, U3 loads on the computation chip of electric energy meter.
Be provided with the first electrochemical capacitor C1, C3, the C5 of stored energy between the output of described phase line Voltage stabilizing module and the phase line; Be provided with the second electrochemical capacitor C2, C4, C6 between the negative pole of the positive pole of the described first voltage stabilizing didoe Z1, Z3, Z5 and the first diode D1, D3, D5; Be provided with the 3rd electrochemical capacitor C10 between the negative pole of the described second diode D2, D4, D6 and the neutral line N, be provided with the 4th electrochemical capacitor C11 between the output of described neutral line Voltage stabilizing module U4 and the neutral line N.
The technical conceive of the utility model is: at power line V
AN, V
BNAnd V
CNThe positive half wave and the negative half wave power supply of the power supply got respectively of two ends.Obtain the two-way power supply and realize metering module and the isolation of MCU module.Adopt the capacitance-resistance power supply of two-way power supply output, saved the power circuit resource, improved the ammeter operating voltage range.
With A is example mutually, works as V
AN＞V
NAThe time; Power supply is in positive half wave; This moment first voltage stabilizing didoe Z1 and second diode D2 conducting, and the second voltage stabilizing didoe Z2 and the first diode D1 end, electric current from the A phase line successively through the first voltage stabilizing didoe Z1, safety capacitor C 7, current-limiting resistance R60, the second diode D2 input neutral line Voltage stabilizing module U4; Neutral line Voltage stabilizing module U4 output voltage V CC, output voltage V CC loads on the single-chip microcomputer of electric energy meter.
Work as V
AN＜V
NAThe time; Power supply is in negative half-wave; This moment, the first voltage stabilizing didoe Z1 and the second diode D2 ended, and the second voltage stabilizing didoe Z2 and the first diode D1 conducting, electric current is imported phase line Voltage stabilizing module U1 through the second voltage stabilizing didoe Z2, current-limiting resistance R60, safety capacitor C 7, the first diode D1 successively from the neutral line; Phase line Voltage stabilizing module U1 output voltage V CCA, output voltage V CCA loads on the computation chip of electric energy meter.
The utlity model has and do not take the PCB resource, reliability is high, advantage with low cost.
The utility model can satisfy the requirement of three-phase and four-line electric energy meter, can meet the needs of single-phase electric energy power supply again, and table meter voltage power supply expanded range, and the circuit resource that do not take up room are with low cost.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; The protection range of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection range of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (2)
1. be used for the capacitance-resistance power supply of three copper-manganese electric energy meters, it is characterized in that: A phase, B are mutually or C is mutually every and neutral line N between be equipped with Voltage stabilizing module, first voltage stabilizing didoe, second voltage stabilizing didoe, first diode, second diode, safety electric capacity, and current-limiting resistance;
Parallelly connected formation first diode of first voltage stabilizing didoe with first diode; Parallelly connected formation second diode of second voltage stabilizing didoe with second diode; Described first diode connects the input of the phase line Voltage stabilizing module that links to each other with phase line, and described second diode connects the input of the neutral line Voltage stabilizing module that links to each other with the neutral line; Be in series with safety electric capacity and current-limiting resistance between described first diode and second diode;
The positive pole of described first voltage stabilizing didoe is connected with phase line, and the negative pole of described first diode is connected with the input of described phase line Voltage stabilizing module;
The positive pole of described second voltage stabilizing didoe is connected with the neutral line, and the negative pole of described second diode is connected with the input of described neutral line Voltage stabilizing module;
The output voltage of described neutral line Voltage stabilizing module loads on the single-chip microcomputer of electric energy meter, and the output voltage of described phase line Voltage stabilizing module loads on the computation chip of electric energy meter.
2. the capacitance-resistance power supply that is used for three copper-manganese electric energy meters as claimed in claim 1; It is characterized in that: first electrochemical capacitor that is provided with stored energy between the output of described phase line Voltage stabilizing module and the phase line; Be provided with second electrochemical capacitor between the negative pole of the positive pole of described first voltage stabilizing didoe and first diode; Be provided with the 3rd electrochemical capacitor between the negative pole of described second diode and the neutral line, be provided with the 4th electrochemical capacitor between the output of described neutral line Voltage stabilizing module and the neutral line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202069060U CN202111615U (en) | 2011-06-17 | 2011-06-17 | Resistance-capacitance power supply used for three-phase manganin electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202069060U CN202111615U (en) | 2011-06-17 | 2011-06-17 | Resistance-capacitance power supply used for three-phase manganin electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111615U true CN202111615U (en) | 2012-01-11 |
Family
ID=45437064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202069060U Expired - Lifetime CN202111615U (en) | 2011-06-17 | 2011-06-17 | Resistance-capacitance power supply used for three-phase manganin electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111615U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN112421969A (en) * | 2020-06-22 | 2021-02-26 | 杭州炬华科技股份有限公司 | Enhanced resistance-capacitance power circuit |
-
2011
- 2011-06-17 CN CN2011202069060U patent/CN202111615U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN102338816B (en) * | 2011-06-17 | 2013-06-05 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN112421969A (en) * | 2020-06-22 | 2021-02-26 | 杭州炬华科技股份有限公司 | Enhanced resistance-capacitance power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120111 Effective date of abandoning: 20130612 |
|
| RGAV | Abandon patent right to avoid regrant |