CN206517138U - Power supply circuit of single-phase intelligent electric meter - Google Patents
Power supply circuit of single-phase intelligent electric meter Download PDFInfo
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- CN206517138U CN206517138U CN201621336300.8U CN201621336300U CN206517138U CN 206517138 U CN206517138 U CN 206517138U CN 201621336300 U CN201621336300 U CN 201621336300U CN 206517138 U CN206517138 U CN 206517138U
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- diode
- battery
- terminal regulator
- rectifier bridge
- transformer
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- 239000003990 capacitor Substances 0.000 claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a power supply circuit of a single-phase intelligent ammeter, which comprises a transformer, a rectifier bridge, an electrolytic capacitor and a three-terminal voltage stabilizer, the first diode, the second diode, battery and filter capacitor, the side that once inclines of transformer is connected with the electric wire netting, the secondary side of transformer is connected with the input of rectifier bridge, electrolytic capacitor is connected to rectifier bridge's output, three terminal regulator's first end and electrolytic capacitor one end are connected, three terminal regulator's second end and the equal ground connection of electrolytic capacitor other end, three terminal regulator's third end and second diode's positive pole are connected, the negative pole of second diode is as power output end, the one end ground connection of battery, the battery other end is connected with the positive pole of first diode, the negative pole of first diode is connected with the negative pole of second diode, filter capacitor's one end and second diode's negative pole are connected, filter capacitor's other end ground connection. The utility model discloses a three terminal regulator both can realize the power supply of grid voltage, can pass through battery powered when the electric wire netting outage again.
Description
Technical field
The utility model is related to intelligent electric meter technical field, more specifically, more particularly to a kind of single-phase intelligent ammeter
Power circuit.
Background technology
Intelligent electric meter is based on MCU computation chip technologies, using current newest integrated circuit technique, according to electric energy meter
About international (IEC) standard and China electric power standard GB/T17215.301-2007《Multifunctional electric energy meter-particular/special requirement》、 GB/
T15284-2002《Multi-rate electric energy meter-particular/special requirement》、DL/T614-2007《Multifunctional electric energy meter》、DL/T645-2007
《Multifunctional electric energy meter communication protocol》、Q/GDW354-2009《Intelligent electric energy meter functional specification》、Q/GDW356-2009《Three-phase intelligence
Can electric energy meter pattern specification》Etc. the ammeter manufactured and designed, including three-phase self-adapting intelligent ammeter and single-phase adaptive
Intelligent electric meter.
It is basic to be powered using line voltage in current single-phase intelligent ammeter, but when grid cut-off, single-phase intelligence
Energy ammeter can not work, and cause using effect to decline.For this reason, it is necessary to which designing a kind of can not only be powered using power network but also can adopted
The power circuit of battery-powered single-phase intelligent ammeter.
Utility model content
The purpose of this utility model, which is to provide, a kind of can not only have been powered using power network but also can use battery powered list
The power circuit of phase intelligent electric meter.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of power circuit of single-phase intelligent ammeter, including transformer, rectifier bridge, electrochemical capacitor, three terminal regulator, first
Diode, the second diode, battery and filter capacitor, the primary side of the transformer are connected with power network, the secondary side of transformer
Be connected with the input of rectifier bridge, the output end of rectifier bridge connection electrochemical capacitor, the first end of the three terminal regulator with
Electrochemical capacitor one end is connected, and the second end and the electrochemical capacitor other end of three terminal regulator are grounded, the 3rd end of three terminal regulator
It is connected with the anode of the second diode, the negative electrode of second diode is as power output end, and one end of the battery is grounded,
The battery other end is connected with the anode of the first diode, and the negative electrode of first diode is connected with the negative electrode of the second diode,
One end of the filter capacitor is connected with the negative electrode of the second diode, the other end ground connection of filter capacitor.
Further, the three terminal regulator is 7805 voltage-stablizers.
Further, the rectifier bridge is bridge rectifier.
Further, the battery is lithium battery.
Compared with prior art, the utility model has the advantage of:The utility model uses three terminal regulator, can both realize
The power supply of line voltage, can be powered in grid cut-off by battery again, and stability is good.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the frame diagram of the power circuit of single-phase intelligent ammeter described in the utility model.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite
Define.
As shown in fig.1, the utility model provides a kind of power circuit of single-phase intelligent ammeter, including transformer, rectification
Bridge, electrochemical capacitor C16, three terminal regulator, the first diode D4, the second diode D8, battery and filter capacitor C17.
The primary side of the transformer is connected with power network, and the secondary side of transformer and the input of rectifier bridge are connected, described
The output end connection electrochemical capacitor C16 of rectifier bridge, the first end of the three terminal regulator is connected with electrochemical capacitor C16 one end, and three
Second end of end voltage-stablizer is grounded with the electrochemical capacitor C16 other ends, and the 3rd end of three terminal regulator is with the second diode D8's
Anode is connected, and the negative electrode of the second diode D8 is as power output end, and one end of the battery is grounded, the other end and first
Diode D4 anode connection, the negative electrode of the first diode D4 is connected with the second diode D8 negative electrode, the filtered electrical
The one end for holding C17 is connected with the second diode D8 negative electrode, filter capacitor C17 other end ground connection.
Preferably, the three terminal regulator is 7805 voltage-stablizers.
Preferably, the rectifier bridge is bridge rectifier.
Preferably, the battery is lithium battery.
Power circuit of the present utility model is responsible for powering to each hardware module in single-phase intelligent ammeter, to ensure whole electricity
The normal operation of energy table.
In Fig. 1, the voltage accessed from major network passes through transformer pressure-reducing, then via bridge rectifier rectification after, by electricity
Electric capacity C16 energy storage, flat ripple are solved, filter capacitor C17 filters out high frequency ripple, then the i.e. acquisition direct current+5V after three terminal regulator voltage stabilizing
Power supply, necessary power supply is provided for the chip normal work in various single-phase intelligent ammeters.And when grid power blackout ,+3.6V lithiums
Battery is powered, when electric on power network ,+5V the direct current supplys exported by the output pin of 7805 three terminal regulators.
The utility model uses three terminal regulator, can both realize the power supply of line voltage, can pass through again in grid cut-off
Battery is powered, and stability is good.
Although being described in conjunction with the accompanying embodiment of the present utility model, patent owner can want in appended right
Various deformations or amendments are made within the scope of asking, as long as no more than the protection model described by claim of the present utility model
Enclose, all should be within protection domain of the present utility model.
Claims (1)
1. a kind of power circuit of single-phase intelligent ammeter, it is characterised in that:It is steady including transformer, rectifier bridge, electrochemical capacitor, three ends
Depressor, the first diode, the second diode, battery and filter capacitor, the primary side of the transformer are connected with power network, transformer
Secondary side and the input of rectifier bridge connect, the output end of rectifier bridge connection electrochemical capacitor, the three terminal regulator
First end is connected with electrochemical capacitor one end, and the second end and the electrochemical capacitor other end of three terminal regulator are grounded, three terminal regulator
The 3rd end be connected with the anode of the second diode, the negative electrode of second diode as power output end, the battery
One end is grounded, and the battery other end is connected with the anode of the first diode, the negative electrode of first diode and the second diode
Negative electrode is connected, and one end of the filter capacitor is connected with the negative electrode of the second diode, the other end ground connection of filter capacitor;Described three
End voltage-stablizer is 7805 voltage-stablizers;The rectifier bridge is bridge rectifier;The battery is lithium battery.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201621336300.8U CN206517138U (en) | 2016-12-07 | 2016-12-07 | Power supply circuit of single-phase intelligent electric meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201621336300.8U CN206517138U (en) | 2016-12-07 | 2016-12-07 | Power supply circuit of single-phase intelligent electric meter |
Publications (1)
Publication Number | Publication Date |
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CN206517138U true CN206517138U (en) | 2017-09-22 |
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Family Applications (1)
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CN201621336300.8U Active CN206517138U (en) | 2016-12-07 | 2016-12-07 | Power supply circuit of single-phase intelligent electric meter |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110932559A (en) * | 2019-12-03 | 2020-03-27 | 成都长城开发科技有限公司 | Power module of ammeter |
CN111060729A (en) * | 2019-12-31 | 2020-04-24 | 湖南龙之翔智能科技有限公司 | Electricity stealing prevention method and system for intelligent electric meter |
-
2016
- 2016-12-07 CN CN201621336300.8U patent/CN206517138U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110932559A (en) * | 2019-12-03 | 2020-03-27 | 成都长城开发科技有限公司 | Power module of ammeter |
CN111060729A (en) * | 2019-12-31 | 2020-04-24 | 湖南龙之翔智能科技有限公司 | Electricity stealing prevention method and system for intelligent electric meter |
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