CN206517138U - Power supply circuit of single-phase intelligent electric meter - Google Patents

Power supply circuit of single-phase intelligent electric meter Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
diode
battery
terminal regulator
rectifier bridge
transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201621336300.8U
Other languages
Chinese (zh)
Inventor
关翔飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Longzhixiang Intelligent Technology Co ltd
Original Assignee
Hunan Longzhixiang Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Longzhixiang Intelligent Technology Co ltd filed Critical Hunan Longzhixiang Intelligent Technology Co ltd
Priority to CN201621336300.8U priority Critical patent/CN206517138U/en
Application granted granted Critical
Publication of CN206517138U publication Critical patent/CN206517138U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Rectifiers (AREA)

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

A kind of power circuit of single-phase intelligent ammeter
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.
CN201621336300.8U 2016-12-07 2016-12-07 Power supply circuit of single-phase intelligent electric meter Active CN206517138U (en)

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
CN206517138U true CN206517138U (en) 2017-09-22

Family

ID=59863357

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621336300.8U Active CN206517138U (en) 2016-12-07 2016-12-07 Power supply circuit of single-phase intelligent electric meter

Country Status (1)

Country Link
CN (1) CN206517138U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN103475086B (en) The power supply of many supply modules seamless switching
CN203589825U (en) Supercapacitor based inductive energy taking power supply device of high voltage measuring system
CN205070392U (en) Smart jack controller
CN206517138U (en) Power supply circuit of single-phase intelligent electric meter
CN204008906U (en) A kind of special change acquisition terminal with high tension loop monitoring
CN205004806U (en) Online direct current uninterrupted power source
CN202334336U (en) Active electronic type transformer power supply
CN204008785U (en) Measurement loop fault monitoring system
CN103997199A (en) Active power factor correction circuit with fault detection function
CN104426220A (en) Voltage regulation circuit
CN202019310U (en) 0V adjustable DC regulated power supply circuit based on LM 317 chip
CN209150738U (en) High-voltage intelligent switch built-in energy-fetching power supply device
CN203747679U (en) Power adapter circuit resistant to high-frequency interference
CN111082536A (en) A stable high-voltage induction power-taking device and method
CN206331107U (en) Power failure detection circuit of single-phase intelligent electric meter
CN208904338U (en) A smart socket that can realize smart charging
CN204422056U (en) A kind of Displaying Meter
CN208621675U (en) Self-powered multifunctional electric meter
CN207218558U (en) A kind of power-supply system of intelligent electric meter
CN202111490U (en) Mobile uninterrupted power source of being simple and practical
CN207504619U (en) Accumulator charge and discharge circuit
CN206099488U (en) Universal cell phone power supply circuit
CN206727875U (en) A kind of cable working power adjusting means
CN204835967U (en) High efficiency notebook AC -DC adapter
CN205193651U (en) Instantaneous heavy current output circuit among low-power consumption circuit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant