CN202563303U - Drive circuit of magnetic flux converter - Google Patents

Drive circuit of magnetic flux converter Download PDF

Info

Publication number
CN202563303U
CN202563303U CN2012202430087U CN201220243008U CN202563303U CN 202563303 U CN202563303 U CN 202563303U CN 2012202430087 U CN2012202430087 U CN 2012202430087U CN 201220243008 U CN201220243008 U CN 201220243008U CN 202563303 U CN202563303 U CN 202563303U
Authority
CN
China
Prior art keywords
magnetic flow
flow convertor
links
chip
magnetic flux
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.)
Expired - Lifetime
Application number
CN2012202430087U
Other languages
Chinese (zh)
Inventor
黄世泽
朱谅
杨阳
杨佰传
屠瑜权
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.)
ZHEJIANG ZHONGKAI ELECTRIC EQUIPMENT CO Ltd
Original Assignee
ZHEJIANG ZHONGKAI ELECTRIC EQUIPMENT 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 ZHEJIANG ZHONGKAI ELECTRIC EQUIPMENT CO Ltd filed Critical ZHEJIANG ZHONGKAI ELECTRIC EQUIPMENT CO Ltd
Priority to CN2012202430087U priority Critical patent/CN202563303U/en
Application granted granted Critical
Publication of CN202563303U publication Critical patent/CN202563303U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

The utility model discloses a drive circuit of a magnetic flux converter. The drive circuit comprises a reset chip connected between a microprocessor and the magnetic flux converter, a MOSFET tube, a second capacitor and a regulating resistor (R1), wherein a power supply pin of the reset chip is connected with an I/O port of the microprocessor, a grounding pin of the reset chip is connected with a ground of a DC power supply, and the reset pin of the reset chip is connected with a grid of the MOSFET tube; a source of the MOSFET tube is connected with the ground of a DC power supply, and a drain of the MOSFET tube is connected with a cathode of the magnetic flux converter; an anode of the second capacitor is connected with an anode of the magnetic flux converter, and is serially connected with the regulating resistor onto an anode of the DC power supply, and a cathode of the second capacitor is connected with the ground of the DC power supply. The problem that a tripping device is burnt out due to the magnetic flux converter is energized for a long time is solved by the drive circuit, and the problem of current interference caused by fast transient of the I/O port can be solved by the reset chip at the same time.

Description

A kind of driving circuit of magnetic flow convertor
Technical field
The present invention relates to a kind of circuit, relate in particular to a kind of driving circuit of magnetic flow convertor.
Background technology
Along with the development of embedded microprocessor technology, increasing digital controller has been incorporated in traditional low-voltage electrical apparatus.In novel low-voltage electrical apparatus, generally come induced signal through current transformer, come analysis and judgement through microprocessor, drive the contact or the mechanism of low-voltage electrical apparatus at last through magnetic flow convertor, realize the disconnection or the tripping operation of low-voltage electrical apparatus.Therefore, magnetic flow convertor plays the signal transfer function of conventional low electrical apparatus mechanism and new Digital controller.
For the driving circuit of magnetic flow convertor, it is used to accept signal (high level: 5V/3.3V, low level: 0V), through to the discharging and recharging of electric capacity, realize the control to magnetic flow convertor then from microprocessor.As shown in Figure 1, be the position of magnetic flow convertor driving circuit in low-voltage electrical apparatus.The stability of driving circuit and reliability concern whole magnetic flow convertor, even the performance of whole low-voltage electrical apparatus.For the drive current of magnetic flow convertor, require it anti-interference, circuit stability is high; Reliable in action property is high; Be swift in motion; Magnetic flow convertor is energising for a long time not; Control method is simple, does not independently take the resource of MCU.
Existing magnetic flow convertor driving circuit realizes through relay that mostly cost is higher, and volume is bigger, and misoperation easily.Therefore, design a kind of reliable magnetic flow convertor driving circuit, prevent the misoperation under the various undesired signals, for the reliability service of novel low-voltage electrical apparatus with significant.
Summary of the invention
The technical matters that the utility model will solve is that the unreasonable electrical apparatus release that the long-time energising of magnetic flow convertor is caused of existing magnetic flow convertor design of drive circuit burns out; The problem of magnetic flow convertor misoperation under undesired signal, and then a kind of magnetic flow convertor driving circuit of simple in structure, dependable performance is provided.
For addressing the above problem; The utility model provides a kind of driving circuit of magnetic flow convertor, and it comprises: be connected in the chip that resets (IC1), MOSFET pipe (Q1), second electric capacity (C2) between microprocessor and the magnetic flow convertor (KM) and regulate resistance (R1); Wherein, the supply pin of the said chip that resets (IC1) links to each other with the I/O mouth of microprocessor, and the lower margin of the said chip that resets (IC1) links to each other with the ground of direct supply, and the resetting pin of the said chip that resets (IC1) links to each other with the grid of MOSFET pipe (Q1); The source electrode of said MOSFET pipe (Q1) links to each other with the ground of direct supply, and the drain electrode of MOSFET pipe (Q1) links to each other with the negative pole of magnetic flow convertor (KM); The positive pole of said second electric capacity (C2) links to each other with the positive pole of magnetic flow convertor (KM), and is series on the positive pole of direct supply with said adjusting resistance (R1), and the negative pole of said second electric capacity (C2) links to each other with the ground of direct supply.
Be connected with first electric capacity (C1) between the grid of said MOSFET pipe (Q1) and the source electrode.
The two ends of said magnetic flow convertor (KM) are parallel with fly-wheel diode (D1); The anode of said fly-wheel diode (D1) is connected with the drain electrode of MOSFET pipe (Q1), and the negative electrode of said fly-wheel diode (D1) is connected with the positive pole of said second electric capacity (C2).
Said second electric capacity (C2) is electrochemical capacitor.
The technique scheme of the utility model is compared prior art and is had the following advantages:
(1) driving circuit of the utility model adopts reset chip and MOSFET pipe, and is simple in structure than the driving circuit of relay, advantages of small volume.And the chip that resets can become a pulse of high level with the high level of microprocessor, solves the electrical apparatus release that the long-time energising of magnetic flow convertor causes and burns out problem, simultaneously the current interference problem that causes of this chip that resets fast transient that can solve the I/O mouth.
(2) further, the driving circuit of the utility model is provided with first electric capacity behind the chip that resets, and it can cushion through the I/O dry after the chip that resets and disturb.
(3) be parallel with diode at the two ends of magnetic flow convertor, during current vanishes in flowing through magnetic flow convertor, do work and consume in the loop that the induction electromotive force that magnetic flow convertor produces constitutes through this fly-wheel diode and magnetic flow convertor.Thereby protected the safety of other element in the circuit.
Description of drawings
For the content that makes the utility model is more clearly understood,, the utility model is done further detailed explanation, wherein below according to the specific embodiment of the utility model and combine accompanying drawing
Fig. 1 is the position view of magnetic flow convertor driving circuit in system;
Fig. 2 is the schematic diagram of the magnetic flow convertor driving circuit of the utility model.
Embodiment
Below will combine accompanying drawing, and use following examples that the utility model is further set forth.
Shown in Figure 2 is the circuit diagram of the driving circuit of the utility model.It comprises: be connected in the chip IC1 that resets, MOSFET pipe Q1, second capacitor C 2 between microprocessor and the magnetic flow convertor KM and regulate resistance R 1; Wherein, the supply pin of the said chip IC1 that resets links to each other with the I/O mouth of microprocessor, and the lower margin of the said chip IC1 that resets links to each other with the ground of direct supply, and the resetting pin of the said chip IC1 that resets links to each other with the grid of MOSFET pipe Q1; The source electrode of said MOSFET pipe Q1 links to each other with the ground of direct supply, and the drain electrode of MOSFET pipe Q1 links to each other with the negative pole of magnetic flow convertor KM, the anode of sustained diode 1; The positive pole of said second capacitor C 2 links to each other with the positive pole of magnetic flow convertor KM, the negative electrode of sustained diode 1, and is series on the positive pole of direct supply with said adjusting resistance R 1, and the negative pole of said second capacitor C 2 links to each other with the ground of direct supply.
It can adjust the duration of charging said adjusting resistance R 1; Said second capacitor C 2 is an electrochemical capacitor, and the parameter of said adjusting resistance R 1 and said second capacitor C 2 is according to the magnetic flow convertor selection of parameter.
Be connected with first capacitor C 1 between the grid of said MOSFET pipe Q1 and the source electrode.Being used to cushion the I/O dry that resets behind the chip disturbs.
In the present embodiment, described MOSFET pipe Q1 model is IRF7493; The model of the described chip IC1 that resets is IMP810.
The drive circuit works process of this magnetic flow convertor is following:
During operate as normal, I/O mouth output low level, the chip IC1 that resets is output as low level, not conducting of MOSFET pipe Q1, direct supply charges to electric capacity.
When breaking down, I/O mouth output high level 5V, the high level 5V pulsewidth of the chip IC1 that resets output 240mS, MOSFET pipe Q1 detects>voltage of 3.5V is conducting, thus electrochemical capacitor C2 is supplied power to magnetic flow convertor, the magnetic flow convertor action.
The said chip IC1 that resets has become the high level of microprocessor into a pulse of high level, solves the problem of the long-time energising of magnetic flow convertor, simultaneously, solves the fast transient problem of I/O mouth.
Said sustained diode 1 is connected in parallel on the two ends of said magnetic flow convertor KM, and said magnetic flow convertor KM can produce induction electromotive force at its two ends through electric current the time.When current vanishes, its induction electromotive force can produce reverse voltage to the element in the circuit.Sustained diode 1 is done work with the loop of magnetic flow convertor KM formation and is consumed; Thereby protected the safety of other element in the circuit; When preventing not install said sustained diode 1, when reverse voltage is higher than the breakdown reverse voltage of element, damage other electrical equipments.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.

Claims (4)

1. the driving circuit of a magnetic flow convertor, it is characterized in that: it comprises:
Be connected in the chip that resets (IC1), MOSFET pipe (Q1), second electric capacity (C2) between microprocessor and the magnetic flow convertor (KM) and regulate resistance (R1);
Wherein, the supply pin of the said chip that resets (IC1) links to each other with the I/O mouth of microprocessor, and the lower margin of the said chip that resets (IC1) links to each other with the ground of direct supply, and the resetting pin of the said chip that resets (IC1) links to each other with the grid of MOSFET pipe (Q1);
The source electrode of said MOSFET pipe (Q1) links to each other with the ground of direct supply, and the drain electrode of MOSFET pipe (Q1) links to each other with the negative pole of magnetic flow convertor (KM);
The positive pole of said second electric capacity (C2) links to each other with the positive pole of magnetic flow convertor (KM), and connects (R1) on the positive pole of direct supply with said adjusting resistance, and the negative pole of said second electric capacity (C2) links to each other with the ground of direct supply.
2. magnetic flow convertor driving circuit according to claim 1 is characterized in that:
Be connected with first electric capacity (C1) between the grid of said MOSFET pipe (Q1) and the source electrode.
3. magnetic flow convertor driving circuit according to claim 1 and 2 is characterized in that:
The two ends of said magnetic flow convertor (KM) are parallel with fly-wheel diode (D1); The anode of said fly-wheel diode (D1) is connected with the drain electrode of MOSFET pipe (Q1), and the negative electrode of said fly-wheel diode (D1) is connected with the positive pole of said second electric capacity (C2).
4. magnetic flow convertor driving circuit according to claim 3 is characterized in that:
Said second electric capacity (C2) is electrochemical capacitor.
CN2012202430087U 2012-05-28 2012-05-28 Drive circuit of magnetic flux converter Expired - Lifetime CN202563303U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202430087U CN202563303U (en) 2012-05-28 2012-05-28 Drive circuit of magnetic flux converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202430087U CN202563303U (en) 2012-05-28 2012-05-28 Drive circuit of magnetic flux converter

Publications (1)

Publication Number Publication Date
CN202563303U true CN202563303U (en) 2012-11-28

Family

ID=47212943

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012202430087U Expired - Lifetime CN202563303U (en) 2012-05-28 2012-05-28 Drive circuit of magnetic flux converter

Country Status (1)

Country Link
CN (1) CN202563303U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103312026A (en) * 2013-05-10 2013-09-18 长城电器集团有限公司 Intelligent controller trip circuit of automatic re-close molded case circuit breaker
CN104731728A (en) * 2015-03-18 2015-06-24 深圳市航天新源科技有限公司 Drive circuit based on I/O port of microprocessor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103312026A (en) * 2013-05-10 2013-09-18 长城电器集团有限公司 Intelligent controller trip circuit of automatic re-close molded case circuit breaker
CN103312026B (en) * 2013-05-10 2016-08-24 长城电器集团有限公司 Automatic reclosing breaker of plastic casing intelligent controller trip circuit
CN104731728A (en) * 2015-03-18 2015-06-24 深圳市航天新源科技有限公司 Drive circuit based on I/O port of microprocessor
CN104731728B (en) * 2015-03-18 2017-12-15 深圳市航天新源科技有限公司 A kind of drive circuit based on microprocessor I/O mouths

Similar Documents

Publication Publication Date Title
CN103607016B (en) Non-polarity automatic judgment charging circuit and charger
CN110071638A (en) Switching power unit and continuous-current plant
CN205051931U (en) LED's drive power supply
CN104505888A (en) Mobile terminal and charging device
JP2019047721A (en) Solar energy auxiliary charging system and control method
CN103236733B (en) Electric bicycle charging device with functions of delaying time and powering off
CN204376458U (en) A kind of mobile terminal and charging device
CN203984066U (en) Intelligent charger circuit
CN202563303U (en) Drive circuit of magnetic flux converter
CN203313043U (en) Negative-voltage drive circuit of high-frequency MOSFET
CN205051933U (en) LED's drive power supply
CN202817830U (en) Charger with function of charging maintenance
CN102904329B (en) Electric power management circuit
CN203481904U (en) Charger with battery reverse connection detection and protection functions
CN205622245U (en) High reliability transmission line responds to draw -out power supply
CN202190220U (en) Synchronous rectification circuit
CN103326327B (en) Floating charger current foldback circuit
CN209282877U (en) A kind of battery discharge control circuit
CN203352913U (en) Isolated constant-current LED driving chip not requiring transformer auxiliary winding in peripheral circuit
CN207320883U (en) Rechargeable battery manages circuit
CN202127535U (en) Auxiliary power supply circuit and driving device for lamp
CN203233223U (en) Electric bicycle charging device with function of time-delay power-off
CN203086324U (en) MOSFET driving and protecting circuit of miniwatt pulse transformer
CN201174603Y (en) Solar inverter
CN203942270U (en) A kind of low-loss output anti-surge circuit of charge power supply

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20121128