CN206272494U - A kind of converter circuit based on NE555 chips - Google Patents
A kind of converter circuit based on NE555 chips Download PDFInfo
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- CN206272494U CN206272494U CN201621398917.2U CN201621398917U CN206272494U CN 206272494 U CN206272494 U CN 206272494U CN 201621398917 U CN201621398917 U CN 201621398917U CN 206272494 U CN206272494 U CN 206272494U
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Abstract
The utility model is related to electric and electronic technical field, specifically a kind of converter circuit based on NE555 chips, including chip, quad bilateral switch, double switch, power supply, resistance, electric capacity, diode, voltage-stabiliser tube, Transient Suppression Diode, photoelectrical coupler, rectifier bridge, switching tube and transformer, the utility model is compared with the existing technology, the working condition of the different automatic switchover NE555 chips according to line voltage, so that the working condition of intelligence DC DC change-over circuit of the switching based on NE555 chips.When i.e. line voltage is relatively low, DC DC change-over circuits are turned off；When line voltage is higher, DC DC change-over circuits are enabled.So as to reduce the requirement of split powered-down source power to a certain extent.Simultaneously because NE555 simple structures, dependable performance is with low cost, reduces production cost, improves equipment dependability.
Description
Technical field
The utility model is related to electric and electronic technical field, specifically a kind of converter electricity based on NE555 chips
Road.
Background technology
Even to this day, electric welding machine has turned into the essential instrument of production and living.There is common welding machine strict power supply to want
Ask, global voltage can not be applied to.Limited by condition of power supply, common welding machine is under inapplicable condition of power supply, it is impossible to
It is normal to use or welding machine be caused to damage, the requirement of production and living cannot be increasingly met.In order to further improve facility
Property, Width funtion electric welding machine arises at the historic moment.It substantially increases the scope of electric welding machine supply voltage so that the welding machine can be applied to
Multiple voltage condition.The convenience that welding machine is used is improve to a certain extent.In order to further improve the reality of Width funtion electric welding machine
With property, the design with different output-current ratings under the conditions of different power voltage is employed.
Accordingly, it would be desirable to a kind of converter circuit of energy switching control loop power supply is designed, so as in different power voltage condition
It is lower to realize different output-current ratings.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided it is a kind of can switching control loop power supply change
Device circuit, to realize different output-current ratings under the conditions of different power voltage.
In order to achieve the above object, the utility model is a kind of converter circuit based on NE555 chips, including chip,
Quad bilateral switch, double switch, power supply, resistance, electric capacity, diode, voltage-stabiliser tube, Transient Suppression Diode, light thermocouple
Clutch, rectifier bridge, switching tube and transformer, it is characterised in that：No. 2 tunnels of Jiao Fen tri- of chip respectively with No. 6 pin, electric capacity of chip
One end and resistance one one end connection, No. 5 pin of chip are connected with one end of electric capacity two, the other end of electric capacity one, electric capacity
Two other end, chip No. 1 pin ground connection, resistance one the other end point two-way respectively with No. 3 pin of chip and switching tube
Gate pole is connected, the source ground of switching tube, the drain electrode point two-way of switching tube respectively with the beginning of the anode and transformer of diode one
No. 2 ports connection of level coil, the negative electrode of diode one is connected with the negative electrode of voltage-stabiliser tube two, the anode of voltage-stabiliser tube two, transformer
No. 1 port of primary coil, one end of electric capacity three are connected with VCC power supplys, the other end ground connection of electric capacity three, transformer secondary coil
No. 4 ports be connected with the anode of diode three, three tunnels of the negative electrode of diode three point one end respectively with resistance three, electric capacity five
No. 13 pin connection of one end and double switch, No. 3 ports of transformer secondary coil, the other end of resistance three, electric capacity five
The other end is grounded, and No. 1 ac input end mouthful of rectifier bridge and No. 3 ac input end mouths connect with electric welding machine single phase power supply end respectively
Connect, No. 2 cathode output ends point four tunnels negative electrode, one end of resistance seven, one end of resistance four respectively with electrochemical capacitor of rectifier bridge
And No. 2 ports connection of photoelectrical coupler, three tunnels of No. 4 cathode output ends of rectifier bridge point anode respectively with electrochemical capacitor,
The negative electrode connection of the other end and Transient Suppression Diode three of resistance seven, anode and the transient state of Transient Suppression Diode three suppress
The negative electrode connection of diode four, after the anode series resistance five of Transient Suppression Diode four, point two-way is another with resistance four respectively
No. 1 port connection of one end and photoelectrical coupler, No. 3 ports ground connection of photoelectrical coupler, No. 4 ports point of photoelectrical coupler
Three tunnels one end respectively with resistance six, No. 5 pin of quad bilateral switch and No. 11 pin of double switch are connected, resistance six
The other end be connected with VCC power supplys, No. 3 pin of quad bilateral switch are connected with VCC power supplys, quad bilateral switch
No. 4 pin are connected with the negative electrode of voltage-stabiliser tube one, and the anode point two-way of voltage-stabiliser tube one is connected with No. 4 pin and No. 8 pin of chip respectively,
No. 7 pin of chip are hanging, and No. 12 pin of double switch are connected with VCC power supplys, No. 7 pin of quad bilateral switch, electric capacity seven
One end ground connection, No. 14 pin of quad bilateral switch, the other end of electric capacity seven be connected with VCC power supplys, No. 6 of double switch
Pin point, No. 7 pin, No. 8 pin, one end ground connection of electric capacity four, No. 16 pin of double switch, the other end of electric capacity four and VCC power supplys company
Connect.
No. 14 pin of described double switch are connected with the VCC power ends of control loop.
The model NE555 of described chip.
The model PC817 of described photoelectrical coupler.
Described Transient Suppression Diode three, the model SMBJP6KE200A of Transient Suppression Diode four.
The model CD4066 of described quad bilateral switch.
The model CD4053 of described double switch.
The model BR3510 of described rectifier bridge.
The utility model compared with the existing technology, the work shape of the different automatic switchover NE555 chips according to line voltage
State, so that the working condition of intelligence DC-DC change-over circuit of the switching based on NE555 chips.When i.e. line voltage is relatively low, shut-off
DC-DC change-over circuits；When line voltage is higher, DC-DC change-over circuits are enabled.It is split powered-down so as to reduce to a certain extent
The requirement of source power.Simultaneously because NE555 simple structures, dependable performance is with low cost, reduces production cost, improves and sets
Standby reliability.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Specific embodiment
The utility model is described further in conjunction with accompanying drawing.
Referring to a kind of converter circuit based on NE555 chips of Fig. 1 the utility model, including chip, quadruple bi-directional conversion
Switch, double switch, power supply, resistance, electric capacity, diode, voltage-stabiliser tube, Transient Suppression Diode, photoelectrical coupler, rectifier bridge,
Switching tube and transformer.No. 2 tunnels of Jiao Fen tri- of chip U1 No. 6 pin respectively with chip U1, one end of electric capacity C1 and resistance one
One end connection of R1, No. 5 pin of chip U1 are connected with one end of the C2 of electric capacity two, the other end of the C1 of electric capacity one, the C2 of electric capacity two it is another
One end, No. 1 pin ground connection of chip U1, the R1 of resistance one the other end point two-way respectively with No. 3 pin and switch transistor T 1 of chip U1
Gate pole connection, the source ground of switch transistor T 1, the drain electrode point two-way of switch transistor T 1 respectively with the anode of the D1 of diode one and
No. 2 ports connection of transformer TR1 primary coils, the negative electrode of the D1 of diode one is connected with the negative electrode of the Z2 of voltage-stabiliser tube two, voltage-stabiliser tube
The anode of two Z2, No. 1 port of transformer TR1 primary coils, one end of the C3 of electric capacity three are connected with VCC power supplys, the C3's of electric capacity three
The other end is grounded, and No. 4 ports of transformer TR1 secondary coils are connected with the anode of the D3 of diode three, the negative electrode of the D3 of diode three
No. 13 pin of three tunnels one end, one end of the C5 of electric capacity five and double switch respectively with the R3 of resistance three are divided to be connected, transformer TR1 times
No. 3 ports of level coil, the other end of the R3 of resistance three, the other end ground connection of the C5 of electric capacity five, No. 1 exchange input of rectifier bridge BR1
Port and No. 3 ac input ends mouthful are connected with electric welding machine single phase power supply end respectively, No. 2 cathode output ends point of rectifier bridge BR1
No. 2 of four tunnels negative electrode respectively with electrochemical capacitor C6, one end of the R7 of resistance seven, one end of the R4 of resistance four and photoelectrical coupler U3
Port connects, three tunnels of No. 4 cathode output ends of rectifier bridge BR1 point anode respectively with electrochemical capacitor C6, the R7 of resistance seven it is another
The negative electrode connection of end and the Z3 of Transient Suppression Diode three, anode and the Transient Suppression Diode four of the Z3 of Transient Suppression Diode three
The negative electrode connection of Z4, after the R5 of anode series resistance five of the Z4 of Transient Suppression Diode four, point two-way is another with the R4 of resistance four respectively
No. 1 port connection of one end and photoelectrical coupler U3, No. 3 ports ground connection of photoelectrical coupler U3, No. 4 of photoelectrical coupler U3
No. 11 pin of port point three tunnels one end, No. 5 pin of quad bilateral switch and double switch respectively with the R6 of resistance six connect
Connect, the other end of the R6 of resistance six is connected with VCC power supplys, No. 3 pin of quad bilateral switch are connected with VCC power supplys, quadruple is double
It is connected with the negative electrode of the Z1 of voltage-stabiliser tube one to No. 4 pin of change-over switch, the anode of the Z1 of voltage-stabiliser tube one point two-way is respectively with the 4 of chip U1
Number pin and No. 8 pin connections, No. 7 pin of chip U1 are hanging, and No. 12 pin of double switch are connected with VCC power supplys, two-way turn of quadruple
Change one end ground connection of No. 7 pin of switch, the C7 of electric capacity seven, No. 14 pin of quad bilateral switch, the other end of the C7 of electric capacity seven with
VCC power supplys are connected, No. 6 pin point of double switch, No. 7 pin, No. 8 pin, one end ground connection of the C4 of electric capacity four, No. 16 of double switch
Pin, the other end of the C4 of electric capacity four are connected with VCC power supplys.No. 14 pin of double switch are connected with the VCC power ends of control loop.
In the utility model, the model NE555 of chip U1.The model PC817 of photoelectrical coupler U3.Transient state suppresses
The model SMBJP6KE200A of the Z3 of diode three, the Z4 of Transient Suppression Diode four.The model of quad bilateral switch
CD4066.The model CD4053 of double switch.The model BR3510 of rectifier bridge BR1.
During utility model works, it is divided into current detection section with intelligent switching part.Individually below with regard to low line voltage
Under line voltage state high, current detection section is analyzed with intelligent switching part.
When line voltage is less than 280V（AC）When, current detection section：Rectified bridge BR1 rectifications are eliminated with electrochemical capacitor C6
After ripple, the voltage at electrochemical capacitor C6 two ends is less than 400V, and the Z3 of Transient Suppression Diode three is in the Z4 of Transient Suppression Diode four
Reverse blocking state.Now no current flows through between No. 1 pin and No. 2 pin of photoelectrical coupler U3, No. 4 pin of photoelectrical coupler U3
In high level.
Intelligent switching part：No. 3 pin of quad bilateral switch, No. 4 pin are opening state, based on NE555 chips U1
DC-DC change-over circuits start normal work, export constant D/C voltage V1.Meanwhile, double switch switch to No. 13 pin, No. 14
Pin is turned on, and control loop is powered by D/C voltage V1.
When line voltage is higher than 280V（AC）When, current detection section：Rectified bridge BR1 rectifications are eliminated with electrochemical capacitor C6
After ripple, the voltage at electrochemical capacitor C6 two ends is higher than 400V, and the Z3 of Transient Suppression Diode three is in the Z4 of Transient Suppression Diode four
Reverse breakdown state.Now there is electric current to flow through between No. 1 pin and No. 2 pin of photoelectrical coupler U3, No. 4 pin of photoelectrical coupler U3
In low level.
Intelligent switching part：No. 3 pin of quad bilateral switch, No. 4 pin are off-state, based on NE555 chips U1
DC-DC change-over circuits be stopped.Meanwhile, double switch switches to No. 11 pin, No. 14 pin to turn on, and control loop is by D/C voltage
VCC powers.
DC-DC change-over circuits based on NE555 chips U1 are analyzed：By NE555 chips U1 and the R1 of resistance one, electric capacity
One C1 constitutes square-wave oscillator circuit, and its dutycycle is determined by the R1 of resistance one with the C1 of electric capacity one.No. 3 pin of NE555 chips U1 drive
Dynamic switch transistor T 1, transformer TR1 constitutes circuit of reversed excitation, D/C voltage VCC is changed into D/C voltage V1.
Claims (8)
1. a kind of converter circuit based on NE555 chips, including chip, quad bilateral switch, double switch, power supply,
Resistance, electric capacity, diode, voltage-stabiliser tube, Transient Suppression Diode, photoelectrical coupler, rectifier bridge, switching tube and transformer, it is special
Levy and be：Chip（U1）No. 2 tunnels of Jiao Fen tri- respectively with chip（U1）No. 6 pin, electric capacity（C1）One end and resistance one
（R1）One end connection, chip（U1）No. 5 pin and electric capacity two（C2）One end connection, electric capacity one（C1）The other end, electric capacity
Two（C2）The other end, chip（U1）No. 1 pin ground connection, resistance one（R1）The other end point two-way respectively with chip（U1）3
Number pin and switching tube（T1）Gate pole connection, switching tube（T1）Source ground, switching tube（T1）Drain electrode point two-way difference
With diode one（D1）Anode and transformer（TR1）No. 2 ports connection of primary coil, diode one（D1）Negative electrode with
Voltage-stabiliser tube two（Z2）Negative electrode connection, voltage-stabiliser tube two（Z2）Anode, transformer（TR1）No. 1 port of primary coil, electric capacity three
（C3）One end be connected with VCC power supplys, electric capacity three（C3）The other end ground connection, transformer（TR1）No. 4 ports of secondary coil with
Diode three（D3）Anode connection, diode three（D3）Negative electrode point three tunnels respectively with resistance three（R3）One end, electric capacity five
（C5）One end and double switch No. 13 pin connection, transformer（TR1）No. 3 ports of secondary coil, resistance three（R3）'s
The other end, electric capacity five（C5）The other end ground connection, rectifier bridge（BR1）No. 1 ac input end mouthful and No. 3 ac input ends mouthful
It is connected with electric welding machine single phase power supply end respectively, rectifier bridge（BR1）No. 2 cathode output ends point four tunnels respectively with electrochemical capacitor（C6）
Negative electrode, resistance seven（R7）One end, resistance four（R4）One end and photoelectrical coupler（U3）No. 2 ports connection, rectification
Bridge（BR1）No. 4 cathode output ends point three tunnels respectively with electrochemical capacitor（C6）Anode, resistance seven（R7）The other end and wink
State suppresses diode three（Z3）Negative electrode connection, Transient Suppression Diode three（Z3）Anode and Transient Suppression Diode four（Z4）
Negative electrode connection, Transient Suppression Diode four（Z4）Anode series resistance five（R5）Afterwards, divide two-way respectively with resistance four（R4）
The other end and photoelectrical coupler（U3）No. 1 port connection, photoelectrical coupler（U3）No. 3 ports ground connection, photoelectric coupling
Device（U3）No. 4 ports point three tunnels respectively with resistance six（R6）One end, No. 5 pin of quad bilateral switch and two-way open
No. 11 pin connection closed, resistance six（R6）The other end be connected with VCC power supplys, No. 3 pin of quad bilateral switch and VCC electricity
Source connects, No. 4 pin and the voltage-stabiliser tube one of quad bilateral switch（Z1）Negative electrode connection, voltage-stabiliser tube one（Z1）Anode be divided to two
Road respectively with chip（U1）No. 4 pin and the connection of No. 8 pin, chip（U1）No. 7 pin it is hanging, No. 12 pin of double switch with
VCC power supplys are connected, No. 7 pin of quad bilateral switch, electric capacity seven（C7）One end ground connection, the 14 of quad bilateral switch
Number pin, electric capacity seven（C7）The other end be connected with VCC power supplys, No. 6 pin of double switch point, No. 7 pin, No. 8 pin, electric capacity four（C4）
One end ground connection, No. 16 pin of double switch, electric capacity four（C4）The other end be connected with VCC power supplys.
2. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described two-way
No. 14 pin of switch are connected with the VCC power ends of control loop.
3. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described chip
（U1）Model NE555.
4. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described photoelectricity
Coupler（U3）Model PC817.
5. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described transient state
Suppress diode three（Z3）, Transient Suppression Diode four（Z4）Model SMBJP6KE200A.
6. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described quadruple
The model CD4066 of two-way reversing switch.
7. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described two-way
The model CD4053 of switch.
8. a kind of converter circuit based on NE555 chips according to claim 1, it is characterised in that：Described rectification
Bridge（BR1）Model BR3510.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398917.2U CN206272494U (en) | 2016-12-20 | 2016-12-20 | A kind of converter circuit based on NE555 chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398917.2U CN206272494U (en) | 2016-12-20 | 2016-12-20 | A kind of converter circuit based on NE555 chips |
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| Publication Number | Publication Date |
|---|---|
| CN206272494U true CN206272494U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621398917.2U Active CN206272494U (en) | 2016-12-20 | 2016-12-20 | A kind of converter circuit based on NE555 chips |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966155A (en) * | 2019-12-24 | 2020-04-07 | 赵华勇 | Double-purpose straight-flow pump |
-
2016
- 2016-12-20 CN CN201621398917.2U patent/CN206272494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966155A (en) * | 2019-12-24 | 2020-04-07 | 赵华勇 | Double-purpose straight-flow pump |
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