CN206149158U - Safe dc supply control circuit of firm output - Google Patents
Safe dc supply control circuit of firm output Download PDFInfo
- Publication number
- CN206149158U CN206149158U CN201621266638.0U CN201621266638U CN206149158U CN 206149158 U CN206149158 U CN 206149158U CN 201621266638 U CN201621266638 U CN 201621266638U CN 206149158 U CN206149158 U CN 206149158U
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- resistance
- electric capacity
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- power factor
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- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 241000272470 Circus Species 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
Safe dc supply control circuit of firm output belongs to electrical apparatus control field, the utility model discloses a solve the problem that direct current load end overload leads to load end electronic equipment to damage. The utility model discloses a circuit breaker QF, current transformer TA, auxiliary relay KA, thyristor VS1, VS2, UC3852 power factor integrated circuit, single phase rectification bridge UR, current transformer T, NMOS pipe N1, resistance R1~R11, electric capacity C1~C8, slide rheostat RP, diode VD1 and VD2, current transformer T's primary winding is the inductance L1 that steps up, what the ability was high -efficient, stable exports the DC voltage to the load end, when load end overload, can hold by automatic cutout mains power supply, and the safety of equipment is held to the proof load.
Description
Technical field
This utility model belongs to electrical equipment control field.
Background technology
The use alternating current that day conventional electric equipment has, then needing of having is converted into unidirectional current could be used, especially
The such as valuable electronic equipment of notebook needs unidirectional current, and electrical stability is had high demands, and existing direct current supply control dress
It is directly to change from civil power and voltage stabilizing output required voltage to put, when line voltage shakiness, or due to some equipment sheets of load end
Body problem and cause load to be widely varied, other valuable electronic equipments can be caused to damage.
The content of the invention
This utility model purpose is that unidirectional current load end load is excessive to cause load end electronic equipment to damage in order to solve
A kind of problem, there is provided safe dc power-supplying circuit of stable output.
The safe dc power-supplying circuit of stable output described in the utility model includes circuit breaker Q F, current transformer
TA, auxiliary reclay KA, IGCT VS1, bidirectional thyristor VS2, UC3852 power factor integrated circuit, single-phase rectification bridge UR,
Current transformer T, NMOS tube N1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8,
Resistance R9, resistance R10, resistance R11, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity
C8, slide rheostat RP, diode VD1 and diode VD2；The first winding of current transformer T is boost inductance L1；
One end of 220V alternating currents connects one end, the secondary wire of current transformer TA primary coils by circuit breaker Q F simultaneously
One end of circle, one end of electric capacity C2, a fixing end of slide rheostat RP and the negative electrode of IGCT VS1；Current transformer TA
The other end of primary coil connects one end of one end, one end of resistance R2 and bidirectional thyristor VS2 of resistance R1, resistance R1 simultaneously
The other end connect one end of electric capacity C3, the other end of electric capacity C3 connects the other end of bidirectional thyristor VS2 and single-phase whole simultaneously
One ac input end of stream bridge UR, the control end of bidirectional thyristor VS2 connects one end of auxiliary reclay KA normally-closed contacts, in
Between relay KA normally-closed contacts the other end connect resistance R2 the other end；
Another fixing end of the other end, the other end of electric capacity C2 and slide rheostat RP of secondary coil is connected to one
Rise, the anode of IGCT VS1 connects one end of electric capacity C1 and one end of auxiliary reclay KA coils simultaneously；The control of IGCT VS1
End processed connects the movable end of slide rheostat RP；
The other end of 220V alternating currents connects the other end, the auxiliary reclay KA coils of electric capacity C1 by circuit breaker Q F simultaneously
The other end and single-phase rectification bridge UR another ac input end；
The cathode power supply outfan of single-phase rectification bridge UR connects one end, one end of resistance R3 and the liter piezoelectricity of electric capacity C4 simultaneously
One end of sense L1, the other end of boost inductance L1 connects the drain electrode of NMOS tube N1 and the anode of diode VD2 simultaneously；
One end ground connection of the Secondary Winding of current transformer T, the other end of the Secondary Winding of current transformer T passes through two poles
Pipe VD1 connects 7 feet of UC3852 power factor integrated circuits, and 7 feet of UC3852 power factor integrated circuits also connect electricity simultaneously
The other end of resistance R3 and one end of electric capacity C5,2 feet of UC3852 power factor integrated circuits connect simultaneously electric capacity C4 the other end,
One end of resistance R4 and the negative power supply outfan of single-phase rectification bridge UR, the 3 feet connection electricity of UC3852 power factor integrated circuits
One end of resistance R5,4 feet of UC3852 power factor integrated circuits connect one end of electric capacity C6；UC3852 power factor integrated circuits
5 feet connect the other end, the other end of electric capacity C5, the other end of resistance R5, the other end of electric capacity C6, the NMOS of resistance R4 simultaneously
The source electrode of pipe N1, one end of electric capacity C8, one end of resistance R11 and load end cathode output end；
6 feet of UC3852 power factor integrated circuits connect the drain electrode of NMOS tube N1 by resistance R6；UC3852 power because
While shunt capacitance C7 and resistance R7 between 8 feet and 1 foot of number integrated circuit；1 foot of UC3852 power factor integrated circuits is also
One end of connection resistance R8, the other end of resistance R8 connects one end of resistance R10 and the other end of resistance R11, resistance R10 simultaneously
The other end connect one end of resistance R9, the other end of resistance R9 connects negative electrode, the other end of electric capacity C8 of diode VD2 simultaneously
And load end cathode output end.
Preferably, single-phase rectification bridge UR constitutes single phase bridge type rectifier circu by four diodes.
Advantage of the present utility model：Control circuit of the present utility model can be efficient, stable export unidirectional current to load end
Pressure, when loading end load and being excessive, can automatically cut off mains-supplied end, it is ensured that the safety of load end equipment.
Description of the drawings
Fig. 1 is the circuit theory diagrams of the safe dc power-supplying circuit of stable output described in the utility model.
Specific embodiment
Specific embodiment one：Present embodiment is illustrated with reference to Fig. 1, the safety of stable output described in present embodiment
The DC source of the high stable of direct current supply control circuit output 300V-400V is to load end.
Current transformer T is used for sense current.VD2 is boosting cache switching diodes, while playing buffer action to C8, is protected
The energy stored on card C8 is provided only to outfan.The sampling bleeder circuit of output end voltage is made up of R9, R10, R11, Jing point
The feedback unit of+5V voltage Jing R7, C7, R8 that pressure is obtained sends into 1 foot and 8 feet of UC3852.R3 and C5 composition start-up circuits, together
When R3 as 7 feet of UC3852 source bias resistance.
Close first circuit breaker Q F, the control circuit for making present embodiment is devoted oneself to work state, when load end load does not surpass
During predetermined value, the magnitude of voltage felt by TA pole of current transformer can not make IGCT VS1 be triggered conducting, auxiliary reclay
KA coils must not electric adhesive, its normally-closed contact is kept closed, and connects the control end power supply of VS2, makes VS2 be triggered conducting,
220V alternating currents are powered to load end, when the extremely super predetermined value of the load of load end or are short-circuited, TA level of current transformer
Coil-induced voltage increase, makes enough VS1 be triggered conducting, then KA coils obtain electric adhesive, and its normally-closed contact disconnects, and VS2 is controlled
End trigger voltage processed is removed, then VS2 is changed into cut-off from conducting, and main power source is cut off, stops being powered to load end.
220V alternating currents to the alternating current that load end is supplied is rectified into direct current by single-phase rectification bridge UR, is filtered by C4, output
300V or so DC voltages, are charged by R3 to C5, and when C5 both end voltages are charged to 16V or so, UC3852 internal circuits are opened
Dynamic, the PWM voltage Jing resistance R6 outputs of its 6 foot output make N1 turn on and work on off state to the grid of NMOS tube N1, this
Plant on off state to drive VT1 by the 6 foot internal circuit output driving pulse voltages of UC3852 and be allowed to work in the state；This
Kind on off state makes the electric current linear rise on boost inductance L1, and current path is the source electrode → landform of the drain electrode → N1 of L1 → N1
Into loop, now VD2 cut-offs, stop being charged to C8, and C8 powers to load end.When N1 ends, because the electric current of L1 rises to
Start to be gradually reduced after maximum, left negative right positive electromotive force, the electricity after the electromotive force and UR rectifying and wave-filterings are felt on L1
Pressure is superimposed to charge together to C8, now VD2 conductings, and the voltage on C8 rises to always 400V, if the electric current in L1 from
Zero starts to increase, and N1 is turned on.When electric current increases to maximum and begins to decline in inductance L1, N1 shut-offs.In exchange input electricity
In the half period of pressure, the frequency of L1 medium-high frequency oscillating currents is continually changing, and the electric current is AC input current, it with exchange defeated
The phase angle for entering voltage goes to zero, while exporting controlled high stability VD to load end in UC3852.
Claims (2)
1. the safe dc power-supplying circuit of stable output, it is characterised in that including circuit breaker Q F, current transformer TA, in
Between relay KA, IGCT VS1, bidirectional thyristor VS2, UC3852 power factor integrated circuit, single-phase rectification bridge UR, electric current become
Depressor T, NMOS tube N1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance
R9, resistance R10, resistance R11, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, cunning
Dynamic rheostat RP, diode VD1 and diode VD2；The first winding of current transformer T is boost inductance L1；
One end of 220V alternating currents connects one end of current transformer TA primary coils, secondary coil by circuit breaker Q F simultaneously
One end, one end of electric capacity C2, a fixing end of slide rheostat RP and the negative electrode of IGCT VS1；Current transformer TA is primary
The other end of coil connects one end of one end, one end of resistance R2 and bidirectional thyristor VS2 of resistance R1 simultaneously, and resistance R1's is another
One end connects one end of electric capacity C3, and the other end of electric capacity C3 connects the other end and single-phase rectification bridge of bidirectional thyristor VS2 simultaneously
One ac input end of UR, the control end of bidirectional thyristor VS2 connects one end of auxiliary reclay KA normally-closed contacts, it is middle after
The other end of electrical equipment KA normally-closed contacts connects the other end of resistance R2；
Another fixing end of the other end, the other end of electric capacity C2 and slide rheostat RP of secondary coil links together, brilliant
The anode of brake tube VS1 connects one end of electric capacity C1 and one end of auxiliary reclay KA coils simultaneously；The control end of IGCT VS1 connects
Connect the movable end of slide rheostat RP；
The other end of 220V alternating currents connected simultaneously by circuit breaker Q F the other end of electric capacity C1, auxiliary reclay KA coils it is another
One end and another ac input end of single-phase rectification bridge UR；
The cathode power supply outfan of single-phase rectification bridge UR connects one end, one end of resistance R3 and the boost inductance L1 of electric capacity C4 simultaneously
One end, the other end of boost inductance L1 connects the drain electrode of NMOS tube N1 and the anode of diode VD2 simultaneously；
One end ground connection of the Secondary Winding of current transformer T, the other end of the Secondary Winding of current transformer T passes through diode
VD1 connects 7 feet of UC3852 power factor integrated circuits, and 7 feet of UC3852 power factor integrated circuits also connect resistance simultaneously
The other end of R3 and one end of electric capacity C5,2 feet of UC3852 power factor integrated circuits connect the other end, the electricity of electric capacity C4 simultaneously
One end of resistance R4 and the negative power supply outfan of single-phase rectification bridge UR, the 3 feet connection resistance of UC3852 power factor integrated circuits
One end of R5,4 feet of UC3852 power factor integrated circuits connect one end of electric capacity C6；UC3852 power factor integrated circuits
5 feet connect the other end, the other end of electric capacity C5, the other end of resistance R5, the other end of electric capacity C6, the NMOS tube of resistance R4 simultaneously
The source electrode of N1, one end of electric capacity C8, one end of resistance R11 and load end cathode output end；
6 feet of UC3852 power factor integrated circuits connect the drain electrode of NMOS tube N1 by resistance R6；UC3852 power factor collection
Into simultaneously shunt capacitance C7 and resistance R7 between 8 feet and 1 foot of circuit；1 foot of UC3852 power factor integrated circuits is also connected with
One end of resistance R8, the other end of resistance R8 connects one end of resistance R10 and the other end of resistance R11 simultaneously, and resistance R10's is another
One end connects one end of resistance R9, and the other end of resistance R9 connects the negative electrode of diode VD2, the other end of electric capacity C8 and bears simultaneously
Carry end cathode output end.
2. the safe dc power-supplying circuit for stably exporting according to claim 1, it is characterised in that single-phase rectification bridge UR
Single phase bridge type rectifier circu is constituted by four diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266638.0U CN206149158U (en) | 2016-11-24 | 2016-11-24 | Safe dc supply control circuit of firm output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266638.0U CN206149158U (en) | 2016-11-24 | 2016-11-24 | Safe dc supply control circuit of firm output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206149158U true CN206149158U (en) | 2017-05-03 |
Family
ID=58626920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621266638.0U Expired - Fee Related CN206149158U (en) | 2016-11-24 | 2016-11-24 | Safe dc supply control circuit of firm output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206149158U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116633169A (en) * | 2023-07-24 | 2023-08-22 | 四川虹锐电工有限责任公司 | System for supplying power in isolation mode and control method |
-
2016
- 2016-11-24 CN CN201621266638.0U patent/CN206149158U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116633169A (en) * | 2023-07-24 | 2023-08-22 | 四川虹锐电工有限责任公司 | System for supplying power in isolation mode and control method |
| CN116633169B (en) * | 2023-07-24 | 2023-10-20 | 四川虹锐电工有限责任公司 | System for supplying power in isolation mode and control method |
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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: 20170503 Termination date: 20201124 |