CN108258782A - A kind of visible building intercom power supply architecture - Google Patents
A kind of visible building intercom power supply architecture Download PDFInfo
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- CN108258782A CN108258782A CN201810165668.XA CN201810165668A CN108258782A CN 108258782 A CN108258782 A CN 108258782A CN 201810165668 A CN201810165668 A CN 201810165668A CN 108258782 A CN108258782 A CN 108258782A
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- 239000002253 acid Substances 0.000 claims abstract description 78
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 239000004065 semiconductor Substances 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 230000007257 malfunction Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 2
- 238000000844 transformation Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of visible building intercom power supply architectures, it is made of Switching Power Supply primary module, lead-acid battery charging module, lead-acid battery, D.C. regulated power supply module, emergent module control module, Switching Power Supply primary module is connect respectively with charging circuit for lead acid batteries and D.C. regulated power supply module, D.C. regulated power supply module is connect with visible building intercom, lead-acid battery charging module charges to lead-acid battery, lead-acid battery is connect with emergent module control module, and module control module of meeting an urgent need control lead-acid battery powers to visible building intercom.The present invention realize visible building intercom under power blackout situation still can Emergency use, and can prevent lead-acid battery from crossing and put damage lead-acid battery, make system relatively reliable.
Description
Technical field
The present invention relates to power supplys, are a kind of visible building intercom power supply architectures.
Background technology
Visible building intercom is mounted in the video of antitheft door of building inlet, intercommunication control device, current visual building
The power supply of space intercom uses regular tap power supply or power source special, and regular tap power circuit is easily bad, power source special setting
There are transformer and insurance function, be hardly damaged, but in the case of the abnormal power supply of alternating current, regular tap power supply or Special electric
Source can not continue to power, cause visible building intercom can not normal use, cause building safety hidden danger.
Invention content
The purpose of the present invention is to provide a kind of visible building intercom power supply architecture, to realize the abnormal power supply feelings of alternating current
Under condition, visible building intercom still can emergency service use.To achieve the above object, the present invention uses following technical scheme：
A kind of visible building intercom power supply architecture, by Switching Power Supply primary module, lead-acid battery charging module, lead-acid battery,
D.C. regulated power supply module, emergent module control module composition, the Switching Power Supply primary module are filled respectively with lead-acid battery
Circuit and the connection of D.C. regulated power supply module, the D.C. regulated power supply module is connect with visible building intercom, described
Lead-acid battery charging module give lead-acid battery charging, the lead-acid battery is connect with emergent module control module, described
Emergent module control module control lead-acid battery powers to visible building intercom.
Wherein, the emergent module control module includes detection circuit, the first metal-oxide-semiconductor, comparator, regulator circuit, divides
Volt circuit, the second metal-oxide-semiconductor and switch module, the detection circuit connect to detect lead with lead-acid battery charging module secondary
Sour cell voltage, the first metal-oxide-semiconductor are connect with detection circuit, and the regulator circuit is connected to the inverting input of comparator, institute
The bleeder circuit stated is connected to the in-phase input end of comparator, and the comparator is connect with the second metal-oxide-semiconductor, the first metal-oxide-semiconductor with
Second metal-oxide-semiconductor connects and is connected to switch module, and the break-make of the switch module controls lead-acid battery to visible building intercommunication
It the power supply of machine and does not power.
Further, one is further included for eliminating the hysteresis loop of lead-acid battery voltage transfer point malfunction, and described is slow
Hysteresis road is connected to the in-phase input end of comparator.Hysteresis loop includes a resistance and the diode of series connection with it.
Wherein, the Switching Power Supply primary module include sequentially connected AC ac input circuits, EMI filter circuit and
Current rectifying and wave filtering circuit.
Preferably, the D.C. regulated power supply module includes the first translation circuit, the first rectification circuit, the first filtered electrical
Road, first translation circuit is by TR1 high frequency transformers, IC1 chips, the first RCD absorbing circuits, the first close loop negative feedback electricity
Road forms, and the first RCD absorbing circuits absorb the peak voltage that TR1 high frequency transformers generate, and TR1 high frequency transformers pass through IC1 cores
The control of piece generates the AC energy of transformation on TR1 high frequency transformers and is coupled to secondary, and secondary is using the first rectified current
Road is rectified into direct current, obtains steady dc voltage after the first filter circuit, the first close loop negative feedback circuit with
TR1 high frequency transformers secondary connects, for secondary output to be controlled to obtain burning voltage.
Preferably, the lead-acid battery charging module includes the second translation circuit, the second rectification circuit, the second filtered electrical
Road, second translation circuit is by TR2 high frequency transformers, IC2 chips, the 2nd RCD absorbing circuits, the second close loop negative feedback electricity
Road forms, and the 2nd RCD absorbing circuits absorb the peak voltage that TR2 high frequency transformers generate, and TR2 high frequency transformers pass through IC2 cores
The control of piece generates the AC energy of transformation on TR2 high frequency transformers and is coupled to secondary, and secondary is using the second rectified current
Road is rectified into direct current, obtains steady dc voltage after the second filter circuit, the second close loop negative feedback circuit with
TR2 high frequency transformers secondary connects, for secondary output to be controlled to obtain burning voltage.
Further, the D.C. regulated power supply module and lead-acid battery charging module further include peak current detection electricity
Road is connect with the CS ends of IC1 chips or IC2 chips.
Further, the lead-acid battery charging module further includes prevent lead-acid battery from filling anti-down and fills diode,
The anti-reverse diode and fuse of battery reversal connection are prevented, the anti-down negative grade for filling diode is connect with the positive grade of battery, institute
The fuse stated is connect with anode, the anti-reverse diode and fuse reverse parallel connection.
Preferably, the Switching Power Supply primary module further includes lightning prevention surge circuit, is arranged on AC exchange inputs
Between circuit and EMI filter circuit.
As a result of above-mentioned structure, the present invention has the advantages that：Power supply architecture of the present invention exchanges defeated in AC
When entering normal power supply, powered by D.C. regulated power supply module to visible building intercom, while charge to lead-acid battery, when AC breaks
When electric, when lead-acid battery voltage is enough, is powered by lead-acid battery to visible building intercom, realize visible building intercom disconnected
It still can Emergency use in the case of electricity.Each working condition is analyzed by emergent module control module, lead-acid battery can be prevented
It crosses and puts damage lead-acid battery, make system relatively reliable.
Description of the drawings
Fig. 1 is structure diagram of the present invention.
Fig. 2 is the circuit diagram of Switching Power Supply primary module of the present invention and emergent module control module.
Fig. 3 is the circuit diagram of Switching Power Supply primary module of the present invention and lead-acid battery charging module.
Fig. 4 is the circuit diagram of the emergent module control module of the present invention.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to which those skilled in the art is made to more fully understand technical scheme of the present invention
Applying example, the present invention is described in further detail.
As shown in Figure 1, the invention discloses a kind of visible building intercom power supply architecture, by Switching Power Supply primary module,
Lead-acid battery charging module, lead-acid battery, D.C. regulated power supply module, emergent module control module composition.Switching Power Supply is primary
Module is connect respectively with charging circuit for lead acid batteries and D.C. regulated power supply module.D.C. regulated power supply module and visible building pair
Say that machine connects.Charging circuit for lead acid batteries charges to lead-acid battery, and lead-acid battery is connect with emergent module control module, mould of meeting an urgent need
Group control module control lead-acid battery powers to visible building intercom.Each coupling part is carried out below in conjunction with physical circuit figure
It is described in detail.
1st, Switching Power Supply primary module
As shown in Fig. 2, Switching Power Supply primary module includes sequentially connected AC ac input circuits, lightning prevention surge circuit, EMI
Filter circuit and current rectifying and wave filtering circuit.
Alternating current is connected to L, N both ends, after L termination fuses, by NTC, and the lightning prevention surge circuit and CX1 of MOV compositions,
The EMI filter circuit of LF1, RX1, RX2, CX2, LF2 composition arrives current rectifying and wave filtering circuit again（The rectifier circuit being made of D1-D4
And electrolytic capacitor EC1 compositions）, rectified bridge circuit, which carries out rectification, will exchange the direct current output for inputting and switching to pulsation, then through electrolysis
Capacitance EC1 filters to obtain smooth direct current output.
2nd, D.C. regulated power supply module
As shown in Fig. 2, D.C. regulated power supply module includes the first translation circuit, the first rectification circuit, the first filter circuit, peak value
Current detection circuit.First translation circuit is born instead by TR1 high frequency transformers, IC1 chips, the first RCD absorbing circuits, the first closed loop
Current feed circuit forms.IC1 chips select KP201 model chips in the present embodiment.
First RCD absorbing circuits（D5, R3, R4, R5, R6, C1) peak voltage that TR1 high frequency transformers generate is absorbed, prevent
Only Q1 metal-oxide-semiconductors avalanche breakdown.
TR1 high frequency transformers generate the AC energy and coupling of transformation by the control of IC1 chips on TR1 high frequency transformers
Close secondary, secondary is rectified into direct current using the first rectification circuit (D11), by the first filter circuit (EC4, L1, EC5,
EC6, LF3) after obtain steady dc voltage.
First close loop negative feedback circuit（Optocoupler PH1 and U1 (TL431), R32-R36 are formed）With TR1 high frequency transformers secondary
Connection, for secondary output to be controlled to obtain burning voltage.
Peak current detection circuit（R11, R12, R13, R14）It is connect with the CS ends of IC1, for detecting peak point current, when
IC1 will turn off output when voltage on R11 is more than 0.5V, prevent overload from exporting.
3rd, lead-acid battery charging module
As shown in figure 3, lead-acid battery charging module includes the second translation circuit, the second rectification circuit, the second filter circuit, anti-down
Fill diode, anti-reverse diode and fuse.Second translation circuit is absorbed by TR2 high frequency transformers, IC2 chips, the 2nd RCD
Circuit, the second close loop negative feedback circuit composition.IC2 chips select KP201 model chips in the present embodiment.
2nd RCD absorbing circuits（D8, R17, R18, R19, R20, C3 are formed）TR2 high frequency transformers are absorbed because leakage inductance generates
Peak voltage, prevent Q2 metal-oxide-semiconductor avalanche breakdowns.TR2 high frequency transformers are by the control of IC2 chips in TR2 high frequency transformers
The upper AC energy for generating transformation is simultaneously coupled to secondary, and secondary using the second rectification circuit (D13) is rectified into direct current, by the
Steady dc voltage is obtained after two filter circuits (EC7, EC8 are formed).
Second close loop negative feedback circuit（Optocoupler PH2 and U2 (TL431) and R39-R43 are formed）With TR2 high frequency transformers
Secondary connection, for secondary output to be controlled to obtain burning voltage.
Peak current detection circuit（R25, R26, R27）For detecting peak point current, when the voltage on R25 is more than 0.5V
IC2 will turn off output, prevent overload from exporting.
It is anti-down to fill diode（D14 negative grade) is connect with the positive grade of battery, is filled it acts as battery is prevented.Fuse（F2）
It is connect with anode (Battery+), anti-reverse diode (D15) and fuse (F2) reverse parallel connection, it acts as prevent lead
Sour battery reverse-connection damage.
4th, emergent module control module
As shown in figure 4, emergent module control module includes detection circuit, the first metal-oxide-semiconductor, comparator, regulator circuit, partial pressure electricity
Road, hysteresis loop, the second metal-oxide-semiconductor and switch module.Comparator selects LM358 comparators.
Detection circuit（D17, C10 are formed）It connect to detect lead-acid battery voltage with lead-acid battery charging module secondary.
First metal-oxide-semiconductor（Q3 it) is connect with detection circuit.Regulator circuit（U3（TL431）It is formed with R46）Form the connection of 2.5V burning voltages
To the inverting input In1- of comparator, the voltage V of reverse input end In1-In1-=2.5V.Bleeder circuit（R48, R49 are formed）
It is connected to the in-phase input end In1+ of comparator, the voltage V of in-phase input end In1+In1+=Vb*R49/R48+R49, Vb are plumbic acid
The voltage of battery.
Hysteresis loop（R51, D19 are formed）The in-phase input end In1+ of comparator is connected to, can be disappeared by add operation
Except the malfunction of lead-acid battery voltage transfer point, system is made to have more reliability.
Comparator and the second metal-oxide-semiconductor（Q4 it) connects, the first metal-oxide-semiconductor (Q3) connect and is connected to out with the second metal-oxide-semiconductor (Q4)
Close module (Q5), switch module（Q5 break-make) controls lead-acid battery to the power supply of visible building intercom and does not power.
By above-mentioned emergent module control module, three kinds of states can be divided into：A. AC normal power supplies, lead-acid battery do not supply
Electricity, visible building intercom are powered by Switching Power Supply；B. AC is powered off, and lead-acid battery voltage is less than 13.5V, visible building intercommunication
Machine does not work；C.AC is powered off, and lead-acid battery voltage is more than 13.5V, and visible building intercom is powered by lead-acid battery.It is pair below
Three kinds of working condition principles carry out analytic explanation.
（1）AC normal power supplies, lead-acid battery are not powered, and visible building intercom is powered by Switching Power Supply.
AC normal power supplies, lead-acid battery charging module work normally, at this time detection circuit（D17, C10 are formed）Stablized
DC voltage, the first metal-oxide-semiconductor (Q3) conducting, the second metal-oxide-semiconductor (Q4) gate pole no-voltage over the ground, the second metal-oxide-semiconductor (Q4) cut-off, by
End in Q4, switch module (Q5) cut-off, lead-acid battery（Battery）It does not discharge.
（2）AC is powered off, and lead-acid battery voltage is less than 13.5V, and visible building intercom does not work.
AC is powered off, and lead-acid battery charging module is stopped, at this time detection circuit（D17, C10 are formed）It does not work, first
Metal-oxide-semiconductor (Q3) ends, and module control module of meeting an urgent need is powered by lead-acid battery and worked normally.Work as VIn1-＞ VIn1+When, LM358 ratios
Compared with the reversed input service of device, low potential, the second metal-oxide-semiconductor (Q4) cut-off, due to Q4 cut-off switch modules (Q5) cut-off, plumbic acid are exported
Battery（Battery）It does not discharge.Pass through VIn1+=Vb*R49/R48+R49, VIn1-=2.5V and VIn1-＞ VIn1+Three conditions can
When being less than 13.5V with the voltage for calculating design lead-acid battery, lead-acid battery prevents battery from crossing and puts damage battery without electric discharge.
(3) AC is powered off, and lead-acid battery voltage is more than 13.5V, and visible building intercom is powered by lead-acid battery.
AC is powered off, and lead-acid battery charging module is stopped, at this time detection circuit（D17, C10 are formed）It does not work, first
Metal-oxide-semiconductor (Q3) ends, and module control module of meeting an urgent need is powered by lead-acid battery and worked normally.Work as VIn1-＜ VIn1+When, LM358 ratios
It working compared with device positive input, exports high potential, the second metal-oxide-semiconductor (Q4) conducting, since Q4 is connected, switch module (Q5) is connected,
Lead-acid battery（Battery）It is discharged by switch module (Q5) and D16 to visible building intercom.Pass through VIn1+=Vb*R49/
R48+R49, VIn1-=2.5V and VIn1-＜ VIn1+When the voltage that three conditions can calculate design lead-acid battery is more than 13.5V,
Lead-acid battery discharges.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of visible building intercom power supply architecture, it is characterised in that：By Switching Power Supply primary module, lead-acid battery charging mould
Block, lead-acid battery, D.C. regulated power supply module, emergent module control module composition, Switching Power Supply primary module difference
It is connect with charging circuit for lead acid batteries and D.C. regulated power supply module, the D.C. regulated power supply module and visible building intercommunication
Machine connects, and the lead-acid battery charging module charges to lead-acid battery, the lead-acid battery and emergent module control module
Connection, the emergent module control module control lead-acid battery to power visible building intercom.
2. visible building intercom power supply architecture as described in claim 1, it is characterised in that：The emergent module control mould
Block includes detection circuit, the first metal-oxide-semiconductor, comparator, regulator circuit, bleeder circuit, the second metal-oxide-semiconductor and switch module, described
Detection circuit is connect with lead-acid battery charging module secondary for detecting lead-acid battery voltage, and the first metal-oxide-semiconductor connects with detection circuit
It connects, the regulator circuit is connected to the inverting input of comparator, and the bleeder circuit is connected to the same mutually defeated of comparator
Enter end, the comparator is connect with the second metal-oxide-semiconductor, and the first metal-oxide-semiconductor connect with the second metal-oxide-semiconductor and is connected to switch module, institute
The break-make for the switch module stated controls lead-acid battery to the power supply of visible building intercom and does not power.
3. visible building intercom power supply architecture as claimed in claim 2, it is characterised in that：One is further included for eliminating plumbic acid
The hysteresis loop of cell voltage transfer point malfunction, the hysteresis loop are connected to the in-phase input end of comparator.
4. visible building intercom power supply architecture as claimed in claim 3, it is characterised in that：The hysteresis loop includes one
Resistance and the diode of series connection with it.
5. visible building intercom power supply architecture as described in claim 1, it is characterised in that：The Switching Power Supply primary mould
Block includes sequentially connected AC ac input circuits, EMI filter circuit and current rectifying and wave filtering circuit.
6. visible building intercom power supply architecture as claimed in claim 5, it is characterised in that：The D.C. regulated power supply mould
Block includes the first translation circuit, the first rectification circuit, the first filter circuit, and first translation circuit is by TR1 high frequency transformations
Device, IC1 chips, the first RCD absorbing circuits, the first close loop negative feedback circuit composition, the first RCD absorbing circuits absorb TR1 high frequencies
The peak voltage that transformer generates, TR1 high frequency transformers generate transformation by the control of IC1 chips on TR1 high frequency transformers
AC energy and be coupled to secondary, it is secondary using the first rectifier circuit rectifies into direct current, after the first filter circuit
To steady dc voltage, the first close loop negative feedback circuit is connect with TR1 high frequency transformer secondary, for controlling secondary
Output obtains burning voltage.
7. visible building intercom power supply architecture as claimed in claim 6, it is characterised in that：The lead-acid battery charging mould
Block includes the second translation circuit, the second rectification circuit, the second filter circuit, and second translation circuit is by TR2 high frequency transformations
Device, IC2 chips, the 2nd RCD absorbing circuits, the second close loop negative feedback circuit composition, the 2nd RCD absorbing circuits absorb TR2 high frequencies
The peak voltage that transformer generates, TR2 high frequency transformers generate transformation by the control of IC2 chips on TR2 high frequency transformers
AC energy and be coupled to secondary, it is secondary using the second rectifier circuit rectifies into direct current, after the second filter circuit
To steady dc voltage, the second close loop negative feedback circuit is connect with TR2 high frequency transformer secondary, for controlling secondary
Output obtains burning voltage.
8. visible building intercom power supply architecture as claimed in claim 7, it is characterised in that：The D.C. regulated power supply mould
Block and lead-acid battery charging module further include peak current detection circuit, are connect with the CS ends of IC1 chips or IC2 chips.
9. visible building intercom power supply architecture as claimed in claim 7 or 8, it is characterised in that：The lead-acid battery fills
Electric module further includes anti-down anti-reverse diode and the insurance filled diode, prevent battery reversal connection for preventing lead-acid battery from filling
Silk, the anti-down negative grade for filling diode are connect with the positive grade of battery, and the fuse is connect with anode, and described is anti-
Reversal connection diode and fuse reverse parallel connection.
10. visible building intercom power supply architecture as claimed in claim 5, it is characterised in that：The Switching Power Supply is primary
Module further includes lightning prevention surge circuit, is arranged between AC ac input circuits and EMI filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165668.XA CN108258782B (en) | 2018-02-28 | 2018-02-28 | Visual building intercom power supply structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165668.XA CN108258782B (en) | 2018-02-28 | 2018-02-28 | Visual building intercom power supply structure |
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| CN108258782A true CN108258782A (en) | 2018-07-06 |
| CN108258782B CN108258782B (en) | 2024-07-30 |
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| CN201810165668.XA Active CN108258782B (en) | 2018-02-28 | 2018-02-28 | Visual building intercom power supply structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111277017A (en) * | 2020-03-10 | 2020-06-12 | 厦门兴卓科技有限公司 | Lithium battery quick charging circuit and application thereof |
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| CN108258782B (en) | 2024-07-30 |
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