CN208285219U - A kind of switching power circuit of intelligence dress patch machine - Google Patents
A kind of switching power circuit of intelligence dress patch machine Download PDFInfo
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- CN208285219U CN208285219U CN201820774700.XU CN201820774700U CN208285219U CN 208285219 U CN208285219 U CN 208285219U CN 201820774700 U CN201820774700 U CN 201820774700U CN 208285219 U CN208285219 U CN 208285219U
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Abstract
The utility model discloses a kind of switching power circuits of intelligence dress patch machine, it includes exchange input interface, lightning protection surge unit, EMI unit, anti- booting surge unit and rectification filtering unit, the EMI unit includes that DM EMI filters out module, common mode interference filters out module and discharge circuit, the alternating current of the exchange input interface input is after lightning protection surge unit carries out overvoltage protection, module is filtered out by DM EMI and common mode interference filters out module and is filtered, the generation of surge current is prevented by anti-booting surge unit again, direct current is finally exported by rectification filtering unit；After exchanging input interface stopping input AC electricity, the electricity that DM EMI filters out module storage is discharged by discharge circuit.The utility model can fill the circuit operational safety of patch machine for the protection intelligence changed and avoid external interference, so that the operation for making intelligence fill patch machine is relatively reliable.
Description
Technical field
The utility model relates to switch power technology field, in particular to a kind of switching power circuit of intelligence dress patch machine.
Background technique
With the development of automatic technology, automation equipment is widely used in some production items for needing a large amount of manpowers
On mesh.For example, patch field is filled in mobile phone part, its main feature is that needing continuous mass production, the requirement to mounting quality very
It is high.Currently, introducing intelligence dress patch machine in mobile phone part dress patch field, it can be reached by the fast quick-mounting patch of automation and save manpower object
The purpose of power.At this time in order to meet the normal use of intelligence dress patch machine, need to be equipped with reliable Switching Power Supply to intelligence dress patch machine,
So that intelligence is filled patch machine also can safely and reliably work in the case where meeting extraneous or itself circuit or load circuit breaks down.
But in order to preferably be adapted to the work of intelligence dress patch machine, analysis the characteristics of for its dress patch environment is needed, and then design and more may be used
The switching circuit leaned on, and general switching power circuit is there are reliability is strong, the bad problem of protecting effect.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of opening for intelligence dress patch machine
Powered-down source circuit securely and reliably can fill the interference that the standby circuit that is sticked is protected and filters out the external world to intelligence.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of switching power circuit of intelligence dress patch machine, comprising:
Exchange input interface；
Lightning protection surge unit；
EMI unit；
Anti- booting surge unit；
Rectification filtering unit；
The EMI unit includes that DM EMI filters out module, common mode interference filters out module and discharge circuit, and the exchange is defeated
The alternating current of incoming interface input filters out module and common mode interference by DM EMI after lightning protection surge unit carries out overvoltage protection
It filters out module to be filtered, then prevents the generation of surge current by anti-booting surge unit, it is finally defeated by rectification filtering unit
Direct current out；After exchanging input interface stopping input AC electricity, the electricity that DM EMI filters out module storage passes through discharge circuit
It is discharged.
In the switching power circuit of the intelligence dress patch machine, the lightning protection surge unit includes the first fuse, second
Fuse, third fuse, the first varistor, the second varistor, third varistor and discharge tube, the first fuse
The zero line of one end connection exchange input interface and one end of the second fuse, the other end of the first fuse connect EMI unit
With one end of third varistor, the other end of the second fuse connects one end of the first varistor, the first varistor
The other end connects one end of the second varistor and one end of discharge tube, and the other end of discharge tube is grounded, the second varistor
The other end connects one end of third fuse, the zero line side of the other end connection exchange input interface of third fuse, third pressure
The other end and EMI unit of quick resistance.
In the switching power circuit of the described intelligence dress patch machine, it includes first capacitor and that the DM EMI, which filters out module,
Two capacitors, one end of first capacitor connect the other end of the first fuse, one end of third varistor and common mode interference and filter out
Module, the other end connection other end of third varistor of first capacitor, common mode interference filter out module, third fuse it is another
The other end of one end and the zero line side for exchanging input interface, one end of the second capacitor and the second capacitor is all connected with common mode interference and filters out
Module.
In the switching power circuit of the described intelligence dress patch machine, it includes third capacitor, that the common mode interference, which filters out module,
Four capacitors, the 5th capacitor, the 6th capacitor, the first inductance, the second inductance and third inductance, the first end connection the 4th of the first inductance
One end of capacitor, one end of the second capacitor and the second inductance the 4th end, the first inductance second end connection third capacitor one
It holds, the third end of the other end of the second capacitor and the second inductance, one end of the third end connection first capacitor of the first inductance, third
The other end of one end of varistor and the first fuse, the other end of the 4th end connection first capacitor of the first inductance, third
The other end and the zero line side that exchanges input interface of the other end of varistor, third fuse, the first end of the second inductance connect
The 4th end of discharge circuit, one end of the 6th capacitor and third inductance is connect, the second end of the second inductance connects discharge circuit, the 5th
One end of capacitor and the third end of third inductance, the first end of third inductance and the second end of third inductance are all connected with anti-booting wave
Unit is gushed, the other end of third capacitor connects the other end and the ground connection of the 4th capacitor, the other end connection the 6th of the 5th capacitor
The other end of capacitor and ground connection.
In the switching power circuit of the described intelligence dress patch machine, the discharge circuit includes first resistor, second resistance, the
Three resistance, the 4th resistance, the 5th resistance and the 6th resistance, one end of first resistor connect the second end of the second inductance, the second electricity
One end of resistance, one end of the 5th capacitor and third inductance third end, first resistor the other end connection second resistance it is another
It holds, one end of one end of 3rd resistor and the 4th resistance, the other end of 3rd resistor connects the other end of the 4th resistance, the 5th electricity
One end of one end of resistance and the 6th resistance, the other end of the 5th resistance connect the first end of the second inductance, the 6th resistance it is another
It holds, the 4th end of one end of the 6th capacitor and third inductance.
In the switching power circuit of the intelligence dress patch machine, the anti-booting surge circuit includes the 4th inductance and first
Thermistor, the second end of one end connection third inductance of the 4th inductance, the other end of the 4th inductance connect rectification filtering unit,
The first end of one end connection third inductance of first thermistor, the other end of the first thermistor connect rectification filtering unit.
In the switching power circuit of the intelligence dress patch machine, the rectification filtering unit includes rectifier bridge and the 7th electricity
To hold, the first end of rectifier bridge connects the other end of the first thermistor, and the second end of rectifier bridge connects the other end of the 4th inductance,
The third end of rectifier bridge connects one end of the 7th capacitor, the 4th end ground connection of rectifier bridge, the other end ground connection of the 7th capacitor.
Compared to the prior art, the utility model provides a kind of switching power circuit of intelligence dress patch machine comprising hands over
Stream input interface, lightning protection surge unit, EMI unit, anti-booting surge unit and rectification filtering unit, the EMI unit include
DM EMI filters out module, common mode interference filters out module and discharge circuit, and the alternating current of the exchange input interface input passes through
After lightning protection surge unit carries out overvoltage protection, module is filtered out by DM EMI and common mode interference filters out module and is filtered, then is led to
Crossing anti-booting surge unit prevents the generation of surge current, finally exports direct current by rectification filtering unit；When exchange input connects
After mouth stops input AC electricity, the electricity that DM EMI filters out module storage is discharged by discharge circuit.The utility model can
With the circuit operational safety for the protection intelligence dress patch machine changed and external interference is avoided, so that intelligence be made to fill the operation of patch machine more
Add reliable.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of the switching power circuit of intelligence dress patch machine provided by the utility model.
Specific embodiment
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of opening for intelligence dress patch machine
Powered-down source circuit, can be relatively reliable and the protection intelligence dress patch machine for change circuit operational safety and avoid extraneous dry
It disturbs, so that the operation for making intelligence fill patch machine is relatively reliable.
To keep the purpose of this utility model, technical solution and effect clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only practical to explain
It is novel, it is not used to limit the utility model.
Referring to Fig. 1, for a kind of circuit diagram of the switching power circuit of intelligence dress patch machine provided by the utility model,
It is described intelligence dress patch machine switching power circuit include:
Exchange input interface 10；
Lightning protection surge unit 20；
EMI unit 30；
Anti- booting surge unit 40；
Rectification filtering unit 50；
The EMI unit 30 include DM EMI filters out module, common mode interference filters out module and discharge circuit (in figure not
Label), the alternating current that the exchange input interface 10 inputs is done after lightning protection surge unit 20 carries out overvoltage protection by differential mode
It disturbs and filters out module and common mode interference filters out module and is filtered, then prevent the production of surge current by anti-booting surge unit 40
It is raw, direct current is finally exported by rectification filtering unit 50；After exchanging the stopping input AC electricity of input interface 10, DM EMI filter
Except the electricity of module storage is discharged by discharge circuit.
EMI unit 30 can filter out the external world to intelligence dress patch machine bring common mode interference and DM EMI, and when the external world
When power grid generates voltage jump, lightning protection surge unit 20 can carry out overvoltage protection to circuit, or electric current is excessive in the circuit
When, for example when booting, anti-booting surge unit 40 can prevent the generation of surge current, last rectification filtering unit 50 can will be handed over
Galvanic electricity is converted into direct current electricity output.Wherein, exchange input interface 10 connects lightning protection surge unit 20, and lightning protection surge unit 20 connects
DM EMI in EMI unit 30 filters out module and common mode interference filters out module, common mode filter out module be also connected with discharge circuit and
Anti- booting surge unit 40, anti-booting surge unit 40 connect rectification filtering unit 50.
In the particular embodiment, the lightning protection surge unit 20 includes the first fuse F1, the second fuse F2, third
Fuse F3, the first varistor RV1, the second varistor RV2, third varistor RV3 and discharge tube FD1, the first insurance
The zero line of one end connection exchange input interface of silk F1 and one end of the second fuse F2, the other end of the first fuse F1 connect
One end of EMI unit 30 and third varistor RV3 is connect, the other end of the second fuse F2 connects the first varistor RV1's
The other end of one end, the first varistor RV1 connects one end of the second varistor RV2 and one end of discharge tube FD1, discharge tube
The other end of FD1 is grounded, one end of the other end connection third fuse F3 of the second varistor RV2, third fuse F3's
Other end connection exchanges the other end and EMI unit 30 of the zero line side of input interface, third varistor RV3.
Varistor is in high impedance under a kind of normal condition, and when varistor both ends moment is more than its starting voltage
When, it will become Low ESR (near short circuit) from high impedance immediately, the resistance for discharging electric current.When there is lightning stroke, generate high
When pressure imports switching power circuit through power grid, by the first fuse F1, the second fuse F2, third fuse F3, first pressure-sensitive
The lightning protection surge unit that resistance RV1, the second varistor RV2, third varistor RV3 and discharge tube FD1 are formed is protected.
When the voltage for being added in each varistor both ends is more than its operating voltage, resistance value is reduced, and makes high-pressure energy by pressure-sensitive electricity
Resistance is consumed, if electric current is excessive, the first fuse F1, the second fuse F2 and third fuse F3 can burn to after protection
Grade circuit.
In the particular embodiment, it includes first capacitor C1 and the second capacitor C2 that the DM EMI, which filters out module, and first
One end of capacitor C1 connects the other end of the first fuse F1, one end of third varistor RV3 and common mode interference and filters out module,
The other end connection other end of third varistor RV3 of first capacitor C1, common mode interference filter out module, third fuse F3
It is dry that the other end of the other end and the zero line side for exchanging input interface, one end of the second capacitor C2 and the second capacitor C2 are all connected with common mode
It disturbs and filters out module.
Wherein, first capacitor C1 and the second capacitor C2 is X capacitor, and full name is generally named: X2 (X1/X3/MKP) inhibits power supply
Electromagnetic interference electricity container.Effect generally in circuit is mainly: power supply cross-line circuit, and spark circuit etc. is eliminated in EMI filtering
Ensure that electronic product finished product meets EMC requirement.The present embodiment filters out DM EMI using first capacitor C1 and the second capacitor C2.
More specifically, it includes third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, that the common mode interference, which filters out module,
The 4th capacitor C4's of first end connection of six capacitor C6, the first inductance L1, the second inductance L2 and third inductance L3, the first inductance L1
One end, one end of the second capacitor C2 and the second inductance L2 the 4th end, the second end connection third capacitor C3 of the first inductance L1
One end, the other end of the second capacitor C2 and the second inductance L2 third end, the third end of the first inductance L1 connects first capacitor C1
One end, one end of third varistor RV3 and the other end of the first fuse F1, the first inductance L1 the 4th end connection first
The other end of capacitor C1, the other end of third varistor RV3, third fuse F3 the other end with exchange the zero of input interface
Line end, first end connection discharge circuit, one end of the 6th capacitor C6 and the 4th end of third inductance L3 of the second inductance L2, second
Second end connection discharge circuit, one end of the 5th capacitor C5 and the third end of third inductance L3 of inductance L2, third inductance L3's
First end and the second end of third inductance L3 are all connected with anti-booting surge unit 40, the 4th electricity of other end connection of third capacitor C3
Hold the other end and the ground connection of C4, the other end of the 5th capacitor C5 connects the other end and the ground connection of the 6th capacitor C6.
Wherein, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6 are Y capacitance, by connecing
It can be used to eliminate common mode interference between input line and ground wire.First inductance L1, the second inductance L2 and third inductance L3 are common mode electricity
Sense, also may filter that the electromagnetic interference signal of the common mode in switching circuit.The present embodiment by third capacitor C3, the 4th capacitor C4,
5th capacitor C5, the 6th capacitor C6, the first inductance L1, the second inductance L2 and third inductance L3 are applied in combination, and can filter very well
Except the common mode interference in switching power circuit.
More specifically, the discharge circuit include first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4,
One end of 5th resistance R5 and the 6th resistance R6, first resistor R1 connect the second end of the second inductance L2, second resistance R2 one
It holds, the third end of one end of the 5th capacitor C5 and third inductance L3, the other end connection second resistance R2's of first resistor R1 is another
One end, one end of 3rd resistor R3 and the 4th resistance R4 one end, the other end of 3rd resistor R3 connects the another of the 4th resistance R4
One end, one end of the 5th resistance R5 and the 6th resistance R6 one end, the other end of the 5th resistance R5 connects the of the second inductance L2
One end, the other end of the 6th resistance R6, one end of the 6th capacitor C6 and third inductance L3 the 4th end.
Wherein, by first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the electricity of the 5th resistance R5 and the 6th
The discharge resistance combination for hindering R6 composition is in parallel with the both ends of first capacitor C1 and the second capacitor C2.When switching power circuit passes through friendship
Galvanic electricity input interface accesses alternating current, i.e. input frequency is the sine wave of 50Hz, filters out module and common mode interference by DM EMI
After the two stage filter for filtering out module, when electric current is in positive half period, electric current flows to the other end from one end of resistance combination, i.e., from
Firewire flows to zero curve；When electric current is in negative half-cycle, electric current flows to one end from the other end of discharge resistance, i.e., flows to from zero curve
Firewire.When alternating current input interface stop access alternating current after, first capacitor C1 and the second capacitor C2 storage electric energy will pass through with
Its first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6 in parallel disappear
It consumes.
More specifically, the anti-booting surge circuit includes the 4th inductance L4 and the first thermistor RT1, the 4th inductance L4
One end connection third inductance L3 second end, the other end of the 4th inductance L4 connects rectification filtering unit 50, the first temperature-sensitive electricity
The first end of one end connection third inductance L3 of RT1 is hindered, the other end of the first thermistor RT1 connects rectification filtering unit 50.
The characteristic of thermistor is to rise resistance with temperature to have exponent relation reduction (thermistor is subzero temperature coefficient element)
, the resistance value of thermistor reduces (being in Low ESR) after instantaneous temperature increases.When the moment of alternating current input interface input current,
It will be to the capacitor charging in circuit.At this time since immediate current is big, energy totally disappeared consumption on the first thermistor RT1, cause
The temperature moment of first thermistor RT1 increases and reduces the resistance value of the first thermistor RT1 (in Low ESR), at this moment
The energy that it is consumed is very small, and late-class circuit can work normally.First thermistor RT1 becomes Low ESR from high impedance, can have
Prevent to effect the generation of surge current.
More specifically, the rectification filtering unit 50 includes rectifier bridge D1 and the 7th capacitor C7, the first end of rectifier bridge D1
The other end of the first thermistor RT1 is connected, the second end of rectifier bridge D1 connects the other end of the 4th inductance L4, rectifier bridge D1's
Third end connects one end of the 7th capacitor C7, the 4th end ground connection of rectifier bridge D1, the other end ground connection of the 7th capacitor C7.
Switching power circuit access alternating current finally by rectifier bridge D1 rectify and pass through the 7th capacitor C7 filter after, can
It is exported with the direct current for switching to clean, is finally the portions such as control mechanism, actuating motor and the vision system of intelligence dress patch machine
Part powers and external interference is avoided to interfere it, and the final steady operation for intelligence dress patch machine provides basis.
In conclusion the utility model provides a kind of switching power circuit of intelligence dress patch machine comprising exchange input
Interface, lightning protection surge unit, EMI unit, anti-booting surge unit and rectification filtering unit, the EMI unit include that differential mode is dry
Disturb and filter out module, common mode interference filters out module and discharge circuit, it is described exchange input interface input alternating current by lightning protection wave
After gushing unit progress overvoltage protection, module is filtered out by DM EMI and common mode interference filters out module and is filtered, then opened by anti-
Machine surge unit prevents the generation of surge current, finally exports direct current by rectification filtering unit；When exchange input interface stops
After input AC electricity, the electricity that DM EMI filters out module storage is discharged by discharge circuit.The utility model can be directed to
The circuit operational safety of the protection intelligence dress patch machine of change simultaneously avoids external interference, so that the operation for making intelligence fill patch machine more may be used
It leans on.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (7)
1. a kind of switching power circuit of intelligence dress patch machine characterized by comprising
Exchange input interface；
Lightning protection surge unit；
EMI unit；
Anti- booting surge unit；
Rectification filtering unit；
The EMI unit includes that DM EMI filters out module, common mode interference filters out module and discharge circuit, and the exchange input connects
The alternating current of mouth input filters out module by DM EMI and common mode interference filters out after lightning protection surge unit carries out overvoltage protection
Module is filtered, then the generation of surge current is prevented by anti-booting surge unit, is finally exported by rectification filtering unit straight
Galvanic electricity；After exchanging input interface stopping input AC electricity, the electricity that DM EMI filters out module storage, which passes through discharge circuit, to be carried out
Release.
2. the switching power circuit of intelligence dress patch machine according to claim 1, which is characterized in that the lightning protection surge unit
Including the first fuse, the second fuse, third fuse, the first varistor, the second varistor, third varistor and
Discharge tube, the zero line of one end connection exchange input interface of the first fuse and one end of the second fuse, the first fuse
The other end connection EMI unit and third varistor one end, the other end of the second fuse connects the first varistor
The other end of one end, the first varistor connects one end of the second varistor and one end of discharge tube, the other end of discharge tube
Ground connection, one end of the other end connection third fuse of the second varistor, the other end connection exchange input of third fuse
The zero line side of interface, the other end of third varistor and EMI unit.
3. the switching power circuit of intelligence dress patch machine according to claim 2, which is characterized in that the DM EMI filters out
Module includes first capacitor and the second capacitor, and one end of first capacitor connects the other end, the third varistor of the first fuse
One end and common mode interference filter out module, the other end of the other end connection third varistor of first capacitor, common mode interference filter
Except module, the other end and the zero line side that exchanges input interface of third fuse, one end of the second capacitor and the second capacitor it is another
One end is all connected with common mode interference and filters out module.
4. the switching power circuit of intelligence dress patch machine according to claim 3, which is characterized in that the common mode interference filters out
Module includes third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the first inductance, the second inductance and third inductance, and first
The first end of inductance connects one end, one end of the second capacitor and the 4th end of the second inductance of the 4th capacitor, and the of the first inductance
Two ends connect one end, the other end of the second capacitor and the third end of the second inductance of third capacitor, and the third end of the first inductance connects
Connect the other end of one end of first capacitor, one end of third varistor and the first fuse, the 4th end connection of the first inductance
The other end of first capacitor, the other end of third varistor, third fuse the other end and the zero curve that exchanges input interface
End, the first end connection discharge circuit of the second inductance, one end of the 6th capacitor and the 4th end of third inductance, the of the second inductance
Two ends connect discharge circuit, one end of the 5th capacitor and the third end of third inductance, the first end and third inductance of third inductance
Second end be all connected with anti-booting surge unit, the other end of third capacitor connects the other end and the ground connection of the 4th capacitor, the
The other end of five capacitors connects the other end and the ground connection of the 6th capacitor.
5. the switching power circuit of intelligence dress patch machine according to claim 4, which is characterized in that the discharge circuit includes
First resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance, one end connection second of first resistor
The second end of inductance, one end of second resistance, one end of the 5th capacitor and the third end of third inductance, the other end of first resistor
Connect the other end, one end of 3rd resistor and one end of the 4th resistance of second resistance, the other end connection the 4th of 3rd resistor
The other end of resistance, one end of the 5th resistance and the 6th resistance one end, the other end of the 5th resistance connects the of the second inductance
One end, the other end of the 6th resistance, one end of the 6th capacitor and the 4th end of third inductance.
6. the switching power circuit of intelligence dress patch machine according to claim 5, which is characterized in that the anti-booting surge electricity
Road include the 4th inductance and the first thermistor, the 4th inductance one end connection third inductance second end, the 4th inductance it is another
One end connect rectification filtering unit, the first thermistor one end connection third inductance first end, the first thermistor it is another
One end connects rectification filtering unit.
7. the switching power circuit of intelligence dress patch machine according to claim 6, which is characterized in that the rectification filtering unit
Including rectifier bridge and the 7th capacitor, the first end of rectifier bridge connects the other end of the first thermistor, and the second end of rectifier bridge connects
The other end of the 4th inductance is connect, the third end of rectifier bridge connects one end of the 7th capacitor, the 4th end ground connection of rectifier bridge, the 7th electricity
The other end of appearance is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820774700.XU CN208285219U (en) | 2018-05-23 | 2018-05-23 | A kind of switching power circuit of intelligence dress patch machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820774700.XU CN208285219U (en) | 2018-05-23 | 2018-05-23 | A kind of switching power circuit of intelligence dress patch machine |
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| CN208285219U true CN208285219U (en) | 2018-12-25 |
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| CN201820774700.XU Active CN208285219U (en) | 2018-05-23 | 2018-05-23 | A kind of switching power circuit of intelligence dress patch machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467854A (en) * | 2020-11-17 | 2021-03-09 | 泰弗思科技(安徽)有限公司 | Energy storage and power supply device for vehicle-mounted equipment |
| CN112688286A (en) * | 2019-10-17 | 2021-04-20 | 钉钉控股（开曼）有限公司 | Power supply protection circuit, electronic equipment and electronic assembly |
| CN112865057A (en) * | 2021-03-19 | 2021-05-28 | 厦门赛尔特电子有限公司 | Electromagnetic protection circuit |
| CN113824088A (en) * | 2021-09-29 | 2021-12-21 | 深圳市智微智能科技股份有限公司 | Input power supply protection circuit and device of direct current type POE switch |
| CN114172117A (en) * | 2021-12-09 | 2022-03-11 | 华荣科技股份有限公司 | Anti-electric shock double-protection constant current source rectifying circuit |
-
2018
- 2018-05-23 CN CN201820774700.XU patent/CN208285219U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688286A (en) * | 2019-10-17 | 2021-04-20 | 钉钉控股（开曼）有限公司 | Power supply protection circuit, electronic equipment and electronic assembly |
| CN112467854A (en) * | 2020-11-17 | 2021-03-09 | 泰弗思科技(安徽)有限公司 | Energy storage and power supply device for vehicle-mounted equipment |
| CN112865057A (en) * | 2021-03-19 | 2021-05-28 | 厦门赛尔特电子有限公司 | Electromagnetic protection circuit |
| CN113824088A (en) * | 2021-09-29 | 2021-12-21 | 深圳市智微智能科技股份有限公司 | Input power supply protection circuit and device of direct current type POE switch |
| CN114172117A (en) * | 2021-12-09 | 2022-03-11 | 华荣科技股份有限公司 | Anti-electric shock double-protection constant current source rectifying circuit |
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