CN207304149U - A kind of microcomputer system power supply is met an urgent need conversion circuit - Google Patents
A kind of microcomputer system power supply is met an urgent need conversion circuit Download PDFInfo
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- CN207304149U CN207304149U CN201721376797.0U CN201721376797U CN207304149U CN 207304149 U CN207304149 U CN 207304149U CN 201721376797 U CN201721376797 U CN 201721376797U CN 207304149 U CN207304149 U CN 207304149U
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- power supply
- resistance
- storage battery
- switching power
- circuit
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Abstract
Meet an urgent need conversion circuit the utility model discloses a kind of microcomputer system power supply, including：Switching Power Supply, storage battery, load and modular converter, the Switching Power Supply, load connects to form Switching Power Supply current supply circuit with modular converter, the storage battery, load connects to form storage battery power supply circuit with modular converter, and Switching Power Supply formation floating charge electrical circuit in parallel with the storage battery, mutual conversion of the Switching Power Supply current supply circuit with the storage battery power supply circuit in the case where alternating current obtains power failure state is realized by the modular converter, through the above way, the utility model can not only charge storage battery when Switching Power Supply is powered, but also it can realize that microcomputer system is supported on the power supply of automatic back-and-forth switching switch power supply and storage battery in the case of alternating current gain and loss, intelligence degree is high, emergent efficiency is fast.
Description
Technical field
A kind of technical field of electric device control is the utility model is related to, more particularly to a kind of microcomputer system power supply is met an urgent need conversion
Circuit.
Background technology
At this stage, microcomputer system is widely used in data memory and work, but needs to rely on DC power supply completely, is
Keep DC system during mains failure to work normally, therefore often configure storage battery as emergent, such a circuit requirement
Usually Switching Power Supply normally for the storage battery of microcomputer system power supply and access can charge spare, once alternating current loses
Electricity, immediately automatic changing-over to storage battery power supply, avoids hang-up from causing the loss of file and the damage of hardware.
And existing emergent conversion circuit during use can only in alternating current dead electricity it is automatic from mains-supplied state
Storage battery power supply state is switched to, and after alternating current is sent a telegram here, but mains-supplied can not be switched back into from storage battery power supply state automatically
State, intelligence degree deficiency.
Utility model content
The utility model is met an urgent need conversion circuit mainly solving the technical problems that providing a kind of microcomputer system power supply, not only
It can charge when Switching Power Supply is powered to storage battery, but also can realize that microcomputer system is supported on alternating current gain and loss
In the case of automatic back-and-forth switching switch power supply and storage battery power supply, intelligence degree is high, and efficiency of meeting an urgent need is fast.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of microcomputer system is provided
Power supply is met an urgent need conversion circuit, including：Switching Power Supply U1, storage battery U2, load R0 and modular converter M1, the Switching Power Supply
U1, load R0 connect to form Switching Power Supply current supply circuit with modular converter M1, the storage battery U2, load R0 and modular converter M1
Series connection forms storage battery power supply circuit, and Switching Power Supply U1 formation floating charge electrical circuits in parallel with the storage battery U2；
The modular converter M1 includes：Silicon-controlled VT, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, relay J1, normally opened contact switch J2.1, triode BG1 and capacitance C1, capacitance C2, the resistance R3, electricity
Resistance R4, resistance R5 are sequentially connected in series to form diverter branch, and the resistance R5 is parallel to the base stage and emitter of the triode BG2
Between；The collector of the triode BG1 is in parallel with the capacitance C1 after connecting with the resistance R7, then is gone here and there with the resistance R6
Connection forms battery activation branch；Control pole of the collector of the triode BG2 also with the resistance R8, the silicon-controlled VT
Series connection forms Switching Power Supply conducting branches；The capacitance C2 to be formed out with connecting after the resistance R2 parallel connections with the relay J1
Close power source active branch；The normally opened contact switch J2.1 is parallel to after the anode and cathode of the silicon-controlled VT and the load
R0 connects to form storage battery conducting branches；
According to the friendship for obtaining dead electricity and realizing the battery activation branch and Switching Power Supply activation branch of triode BG1
For operation, replace circulation so as to fulfill the storage battery conducting branches and the Switching Power Supply conducting branches, final realize turns
Block M1 is changed the mold to the mutual conversion between the Switching Power Supply current supply circuit and the storage battery power supply circuit.
In one preferred embodiment of the utility model, charging indicator light D1 and electricity are also in series with the floating charge electrical circuit
R1 is hindered, discharge indicating lamp D2 and resistance R9, and the charging indicator light D1 and institute are also in series with the storage battery power supply circuit
It is light emitting diode to state discharge indicating lamp D2, for showing current storage battery status, easy to remind operating personnel timely
Preserve data.
In one preferred embodiment of the utility model, over mould is also in series with the storage battery power supply circuit
Block M2, and the over module M2 and discharge indicating lamp D2, the resistance R9 after connecting are in parallel, in storage battery power supply
When prevent that battery discharging is excessive.
In one preferred embodiment of the utility model, the over module M2 includes：Diode D3, voltage-stabiliser tube
CW3, triode BG2, relay J2, normally opened contact switch J1.1, resistance R10, resistance R11, the normally opened contact switch J1.1
The collector of the triode BG2 is connected to after in parallel with the relay J2, the diode D3 and voltage-stabiliser tube CW3 goes here and there
The base stage of the triode BG2 is connected to after connection, the resistance R11 is connected to the emitter of the triode BG2, and described steady
Pressure pipe CW2 is in parallel with the resistance R10 after connecting with the resistance R11.
In one preferred embodiment of the utility model, the voltage of the Switching Power Supply U1 is 15V, the storage battery U2's
Voltage is 12V, can ensure that storage battery is always held at floating charge state, and will not cause and overcharge, without setting overshoot protection electric
Road, circuit structure simplerization.
In one preferred embodiment of the utility model, the capacity of the capacitance C1 is 22 μ F, the capacity of the capacitance C2
For 100 μ F, it can ensure that capacitance C1 is fully charged, and capacitance C2 undercharges, so as to prevent in alternating current when Switching Power Supply is powered
During power failure, capacitance C2 also discharges, and cause relay J1 also it is electric so that normally opened contact switch J1.1 closure and nothing
Method activates relay J2, so causing silicon-controlled all the time in obtain electricity condition, and can not be converted back open from storage battery power supply circuit
Powered-down source current supply circuit, influences to use.
In one preferred embodiment of the utility model, the both ends of the load R0 are parallel with liquid crystal display LED, are used for
The parameters such as each resistive voltage, battery discharging electric current, accumulator electric-quantity are shown on liquid crystal panel.
In one preferred embodiment of the utility model, the Switching Power Supply U1 is in parallel with the storage battery U2 both ends
There is voltage stabilizing integrated chip 7812, for the voltage in stable switch power supply current supply circuit and storage battery power supply circuit.
The beneficial effects of the utility model are：A kind of microcomputer system power supply of the utility model is met an urgent need conversion circuit, is passed through
Floating charge electrical circuit is connected to form using Switching Power Supply U1 and the storage battery U2, can be when Switching Power Supply U1 powers to storage battery
U2 charges, while is in series with shared modular converter M1 in Switching Power Supply current supply circuit and storage battery power supply circuit, makes
Microcomputer system is supported on the power supply of automatic back-and-forth switching switch power supply and storage battery in the case of alternating current gain and loss, it is intelligent
Degree is high, and efficiency of meeting an urgent need is fast.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model in a preferred embodiment.
Embodiment
The preferred embodiment to the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make the scope of protection of the utility model apparent clear and definite
Define.
Referring to Fig. 1, the utility model embodiment includes：
A kind of microcomputer system power supply is met an urgent need conversion circuit, and a kind of microcomputer system power supply is met an urgent need conversion circuit, including：Open
Powered-down source U1, storage battery U2, load R0 and modular converter M1, the Switching Power Supply U1, load R0 connect with modular converter M1
Switching Power Supply current supply circuit is formed, the storage battery U2, load R0 connect to form storage battery power supply circuit with modular converter M1, and
The Switching Power Supply U1 is in parallel with the storage battery U2 to form floating charge electrical circuit；
The modular converter M1 includes：Silicon-controlled VT, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, relay J1, normally opened contact switch J2.1, triode BG1 and capacitance C1, capacitance C2, the resistance R3, electricity
Resistance R4, resistance R5 are sequentially connected in series to form diverter branch, and the resistance R5 is parallel to the base stage and emitter of the triode BG2
Between；The collector of the triode BG1 is in parallel with the capacitance C1 after connecting with the resistance R7, then is gone here and there with the resistance R6
Connection forms battery activation branch；Control pole of the collector of the triode BG2 also with the resistance R8, the silicon-controlled VT
Series connection forms Switching Power Supply conducting branches；The capacitance C2 to be formed out with connecting after the resistance R2 parallel connections with the relay J1
Close power source active branch；The normally opened contact switch J2.1 is parallel to after the anode and cathode of the silicon-controlled VT and the load
R0 connects to form storage battery conducting branches；
According to the friendship for obtaining dead electricity and realizing the battery activation branch and Switching Power Supply activation branch of triode BG1
For operation, replace circulation so as to fulfill the storage battery conducting branches and the Switching Power Supply conducting branches, final realize turns
Block M1 is changed the mold to the mutual conversion between the Switching Power Supply current supply circuit and the storage battery power supply circuit.
Wherein, charging indicator light D1 and resistance R1, the storage battery power supply circuit are also in series with the floating charge electrical circuit
In be also in series with discharge indicating lamp D2 and resistance R9, and the charging indicator light D1 and discharge indicating lamp D2 is luminous two
Pole pipe, for showing current storage battery status, easy to remind operating personnel to preserve data in time.
Also be in series with over module M2 in the storage battery power supply circuit, and the over module M2 with
Discharge indicating lamp D2, resistance R9 after series connection is in parallel, for preventing that battery discharging is excessive in storage battery power supply.
The over module M2 includes：Diode D3, voltage-stabiliser tube CW3, triode BG2, relay J2, it is normally opened touch
It is connected to after point switch J1.1, resistance R10, resistance R11, the normally opened contact switch J1.1 are in parallel with the relay J2 described
The collector of triode BG2, the diode D3 are connected to the base stage of the triode BG2 after connecting with the voltage-stabiliser tube CW3,
The resistance R11 is connected to the emitter of the triode BG2, and the voltage-stabiliser tube CW2 connect with the resistance R11 after with institute
State resistance R10 parallel connections.
The both ends of the load R0 are also parallel with liquid crystal display LED, for shown on liquid crystal panel each resistive voltage,
The parameters such as battery discharging electric current, accumulator electric-quantity.
Further illustrate, the voltage of the Switching Power Supply U1 is 15V, and the voltage of the storage battery U2 is 12V, can be ensured
Storage battery is always held at floating charge state, and will not cause and overcharge, and without setting overshoot protection circuit, circuit structure is simpler
Change.
Further illustrate, the capacity that the capacity of the capacitance C1 is 22 μ F, the capacitance C2 is 100 μ F, can be ensured
When Switching Power Supply is powered, capacitance C1 is fully charged, and capacitance C2 undercharges.
Further illustrate, the Switching Power Supply U1 in the storage battery U2 both ends with being parallel with voltage stabilizing integrated chip
7812, for the voltage in stable switch power supply current supply circuit and storage battery power supply circuit.
It is different from the prior art, the utility model discloses a kind of microcomputer system power supply and meets an urgent need conversion circuit, it runs
Principle specifically includes as follows：
The floating charge electric process of storage battery U2：Switching Power Supply U1 carries out floating charging by discharge indicating lamp D1 to storage battery U2,
Discharge indicating lamp D1 is shinny at this time, and floating current is in terms of 1mA/Ah, during discharge indicating lamp D1 normal luminous 20mA, can fill 20Ah
Storage battery U2, and because pipe pressure be 3V, when Switching Power Supply U1 chooses 15V, you can realize that the voltage for arriving storage battery U2 is 12V,
So that storage battery U2 is always maintained at floating charge state, it will not cause and overcharge, while without setting overcharge protection circuit.
Switching Power Supply U1 power supply process：During mains-supplied, Switching Power Supply U1 obtains electric, on the one hand, one part of current is by electricity
Resistance R6 is flow at the cathode of capacitance C1, so as to charge to capacitance C1, on the other hand, another part electric current through overload R0,
The anode of silicon-controlled VT reaches the collector of triode BG1 with control pole, resistance R8, some electric current by resistance R3,
Resistance R4 reaches the base stage of triode BG1, so that turn-on transistor BG1 so that electric current is exported from the emitter of BG1, is finally led
Logical Switching Power Supply current supply circuit, in the process, since the control pole of silicon-controlled VT connects negative voltage, the sun of silicon-controlled VT
Pole is disconnected with cathode, so as to block the current supply circuit of storage battery U2, realizes the independent power supply of Switching Power Supply.
The transfer process of storage battery U2 power supplies is supplied power to by Switching Power Supply U1：During mains failure, Switching Power Supply U1 dead electricity, after
Electric appliance J1 dead electricity, normally opened contact switch J1.1 are disconnected, and charging indicator light D1 extinguishes, while triode BG1 dead electricity also disconnects, at this time
The cathode of fully charged capacitance C1 connects the control pole of silicon-controlled VT so that anode and the cathode conducting of silicon-controlled VT, so that
The electric current for obtaining storage battery U2 can be through overload R0, silicon-controlled VT, resistance R9 and discharge indicating lamp D2, so as to turn on whole storage
Battery powered circuit.
Storage battery U2 power supply process：After the conducting of storage battery power supply circuit, discharge indicating lamp D2 obtains electric shinny, while loads R0
Both ends parallel connection liquid crystal display LED, show the voltage at load R0 both ends and calculate the storage battery power supply circuit of gained
In output current, in addition, a portion electric current in storage battery power supply circuit flow to the collection of triode BG2 by relay J2
Electrode, another part electric current enters the base stage of triode BG2 by diode D2, voltage-stabiliser tube CW3, so that turn-on transistor BG2,
So that electric current is exported from the emitter of triode BG2, so that whole over module M2 is turned on, then due to relay J2
Conducting so that normally opened contact switch J2.1 close so that the output current in storage battery power supply circuit is avoided silicon-controlled and passed through
Normally opened contact switch J2.1 is crossed, so that silicon-controlled VT is short-circuit, no maintenance electric current, while the positive voltage of silicon-controlled VT control poles
Disappear also with the kwh loss of capacitance C1, silicon-controlled VT is again off.
The transfer process of Switching Power Supply U1 power supplies is supplied power to by storage battery U2：After alternating current incoming call, the C2 chargings of conducting capacitance, from
And relay J1 must be conducted, normally opened contact switch J1.1 closure so that electric current avoid relay J2 and through normally opened contact
J1.1 circulations are switched, relay J2 dead electricity, normally opened contact switch J2.1 is disconnected, so that storage battery power supply circuit is disconnected, it is same with this
When silicon-controlled VT control pole be in negative voltage under the power supply of Switching Power Supply U1 so that the anode of silicon-controlled VT to cathode disconnect,
And the output voltage of Switching Power Supply U1 is more than the output voltage of storage battery U2, also forces storage battery U2 exit power supply, so far certainly
It is dynamic to recover original mains-supplied state.
Wherein, the over principle in storage battery U2 power supply process is：Gradually put with the electricity of storage battery U2
Electricity, the voltage of storage battery U2 reduce, until when the output voltage of storage battery U2 is less than the voltage stabilizing value of voltage-stabiliser tube, voltage-stabiliser tube CW3 is cut
Only disconnect so that the base stage dead electricity of BG2 and disconnect therewith so that over module M2 disconnect, relay J2 dead electricity,
So that normally opened contact switch J2.1 is disconnected, whole storage battery power supply circuit is finally disconnected, discharge indicating lamp D2 extinguishes, and realizes
To the over of storage battery power supply.
It is different from the prior art, a kind of microcomputer system power supply of the utility model is met an urgent need conversion circuit, by using switch
The power supply U1 and storage battery U2 is connected to form floating charge electrical circuit, storage battery U2 can be filled when Switching Power Supply U1 powers
Electricity, while it is in series with shared modular converter M1 in Switching Power Supply current supply circuit and storage battery power supply circuit so that micro computer
The power supply of system load automatic back-and-forth switching switch power supply U1 and storage battery U2 in the case of alternating current gain and loss, intelligence degree
Height, efficiency of meeting an urgent need are fast.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (8)
- The conversion circuit 1. a kind of microcomputer system power supply is met an urgent need, it is characterised in that including：Switching Power Supply U1, storage battery U2, load R0 and modular converter M1, the Switching Power Supply U1, load R0 connect to form Switching Power Supply current supply circuit with modular converter M1, institute State storage battery U2, load R0 connects to form storage battery power supply circuit with modular converter M1, and the Switching Power Supply U1 and the storage Battery U2 is in parallel to form floating charge electrical circuit；The modular converter M1 includes：Silicon-controlled VT, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electricity Hinder R8, relay J1, normally opened contact switch J2.1, triode BG1 and capacitance C1, capacitance C2, the resistance R3, resistance R4, Resistance R5 is sequentially connected in series to form diverter branch, and the resistance R5 is parallel between base stage and the emitter of the triode BG2； The collector of the triode BG1 is in parallel with the capacitance C1 after connecting with the resistance R7, then shape of connecting with the resistance R6 Into battery activation branch；Control pole of the collector of the triode BG2 also with the resistance R8, the silicon-controlled VT is connected Form Switching Power Supply conducting branches；The capacitance C2 to form switch electricity with connecting after the resistance R2 parallel connections with the relay J1 Activate branch in source；The normally opened contact switch J2.1 goes here and there after being parallel to the anode and cathode of the silicon-controlled VT with the load R0 Connection forms storage battery conducting branches.
- The conversion circuit 2. microcomputer system power supply according to claim 1 is met an urgent need, it is characterised in that the floating charge electrical circuit In be also in series with charging indicator light D1 and resistance R1, be also in series with discharge indicating lamp D2 and resistance in the storage battery power supply circuit R9, and the charging indicator light D1 and discharge indicating lamp D2 is light emitting diode.
- The conversion circuit 3. microcomputer system power supply according to claim 2 is met an urgent need, it is characterised in that the storage battery power supply Also be in series with over module M2 in circuit, and the over module M2 with connect after discharge indicating lamp D2, Resistance R9 is in parallel.
- The conversion circuit 4. microcomputer system power supply according to claim 3 is met an urgent need, it is characterised in that the over Module M2 includes：Diode D3, voltage-stabiliser tube CW3, triode BG2, relay J2, normally opened contact switch J1.1, resistance R10, electricity R11 is hindered, the collector of the triode BG2, institute are connected to after the normally opened contact switch J1.1 is in parallel with the relay J2 The base stage that the triode BG2 is connected to after diode D3 connects with the voltage-stabiliser tube CW3 is stated, the resistance R11 is connected to institute State the emitter of triode BG2, and the voltage-stabiliser tube CW2 connect with the resistance R11 after it is in parallel with the resistance R10.
- The conversion circuit 5. microcomputer system power supply according to claim 1 is met an urgent need, it is characterised in that the Switching Power Supply U1 Voltage be 15V, the voltage of the storage battery U2 is 12V.
- The conversion circuit 6. microcomputer system power supply according to claim 1 is met an urgent need, it is characterised in that the appearance of the capacitance C1 The capacity measured as 22 μ F, the capacitance C2 is 100 μ F.
- The conversion circuit 7. microcomputer system power supply according to claim 1 is met an urgent need, it is characterised in that the two of the load R0 End is parallel with liquid crystal display LED.
- The conversion circuit 8. microcomputer system power supply according to claim 1 is met an urgent need, it is characterised in that the Switching Power Supply U1 With being parallel with voltage stabilizing integrated chip 7812 in the storage battery U2 both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376797.0U CN207304149U (en) | 2017-10-24 | 2017-10-24 | A kind of microcomputer system power supply is met an urgent need conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376797.0U CN207304149U (en) | 2017-10-24 | 2017-10-24 | A kind of microcomputer system power supply is met an urgent need conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207304149U true CN207304149U (en) | 2018-05-01 |
Family
ID=62273971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721376797.0U Expired - Fee Related CN207304149U (en) | 2017-10-24 | 2017-10-24 | A kind of microcomputer system power supply is met an urgent need conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207304149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834691A (en) * | 2017-10-24 | 2018-03-23 | 常熟市通用电器厂有限公司 | A kind of microcomputer system power supply is met an urgent need change-over circuit |
-
2017
- 2017-10-24 CN CN201721376797.0U patent/CN207304149U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834691A (en) * | 2017-10-24 | 2018-03-23 | 常熟市通用电器厂有限公司 | A kind of microcomputer system power supply is met an urgent need change-over circuit |
| CN107834691B (en) * | 2017-10-24 | 2023-10-24 | 常熟市通用电器厂有限公司 | Emergent converting circuit of microcomputer system power |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20211024 |