CN206848851U - A kind of transformer resistance detector power supply stabilization circuit - Google Patents
A kind of transformer resistance detector power supply stabilization circuit Download PDFInfo
- Publication number
- CN206848851U CN206848851U CN201720791095.2U CN201720791095U CN206848851U CN 206848851 U CN206848851 U CN 206848851U CN 201720791095 U CN201720791095 U CN 201720791095U CN 206848851 U CN206848851 U CN 206848851U
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- resistance
- operational amplifier
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- transistor
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Abstract
It the utility model is related to a kind of transformer resistance detector power supply stabilization circuit,Power supply connects transistor Q1 colelctor electrode in circuit,Transistor Q1 base stage connects transistor Q2 colelctor electrode through resistance R6,Transistor Q2 grounded emitter,Transistor Q2 base stage connects operational amplifier U1 6 ports through resistance R4,Resistance R4 connects operational amplifier U1 2 ports through slide rheostat R16 simultaneously,Operational amplifier U1 3 ports are through electric capacity C2 connecting resistances R2,Electric capacity C2 connecting resistances R1 simultaneously,Transistor Q1 base stage is grounded through resistance 7,Transistor Q1 base stage connects transistor Q3 emitter stage simultaneously,Transistor Q3 colelctor electrode connects+12V accessory power supplys through resistance R12,Transistor Q3 base stage connects operational amplifier U3 6 ports through resistance R10,Resistance R10 meets electric capacity C5 through resistance R13 simultaneously,Electric capacity C5 connects operational amplifier U3 2 ports,The circuit of the utility model design ensures that electric power output voltage is stable,Securely and reliably,Preferably promote the use of.
Description
Technical field
It the utility model is related to circuitry field, more particularly to a kind of transformer resistance detector power supply stabilization circuit.
Background technology
Conventional power source mu balanced circuit response speed is slow, and circuit control is had a great influence, so as to reduce circuit operating efficiency, entered
And reduce user's operating efficiency.
Utility model content
The purpose of this utility model is to provide a kind of transformer resistance detector power supply stabilization circuit, to solve above-mentioned skill
Art problem, to achieve the above object the utility model use following technical scheme：
A kind of transformer resistance detector power supply stabilization circuit, power supply connects transistor Q1 colelctor electrode, transistor in circuit
Q1 base stage connects transistor Q2 colelctor electrode through resistance R6, and transistor Q2 grounded emitter, transistor Q2 base stage is through resistance
R4 connects operational amplifier U1 6 ports, while resistance R4 connects operational amplifier U1 2 ports through slide rheostat R16, and computing is put
Big device U1 3 ports are through electric capacity C2 connecting resistance R2, while electric capacity C2 connecting resistance R1, transistor Q1 base stage are grounded through resistance 7, together
When transistor Q1 base stage connect transistor Q3 emitter stage, transistor Q3 colelctor electrode connects+12V accessory power supplys through resistance R12, brilliant
Body pipe Q3 base stage connects operational amplifier U3 6 ports through resistance R10, while resistance R10 connects electric capacity C5, electric capacity through resistance R13
C5 connects operational amplifier U3 2 ports, and operational amplifier U3 3 ports connect slide rheostat R17, slide rheostat through resistance R8
The VREF ports of R17 connection control circuits, operational amplifier U3 3 ports connect operational amplifier U2 6 ports through resistance R9, simultaneously
Operational amplifier U3 3 ports connect power supply negative output terminal, operational amplifier U2 6 ports warp through resistance R11 and electric capacity C4 respectively
Electric capacity C3 is grounded, and operational amplifier U2 6 ports connect operational amplifier U2 2 ports, slide rheostat through slide rheostat R15
U2 1 port meets electric capacity C2 through resistance R2, while resistance R2 connecting resistance R1, operational amplifier U2 3 ports connect through resistance R3
Ground, while resistance R3 connects operational amplifier U1 2 ports, operational amplifier U1-U3 4 ports and 7 ports difference through resistance R5
Meet -12V and+12V accessory power supplys.
On the basis of above-mentioned technical proposal, the operational amplifier U1-U3 uses LM741 type operational amplifiers.
The design is managed using FET as adjustment, and because FET is voltage-controlled type device, grid level has input electricity
Hold, the situation of discharge and recharge is there is when grid step voltage adjusts, this discharge and recharge time rings the dynamic for influenceing to adjust pipe
Answer speed., will be by curent change directly on sampling resistor R1 when the output voltage caused by being changed as input voltage changes
Pressure drop embodied, the feed forward circuit being made up of amplifier U1, voltage change is feedovered to Q2 ground levels, changes grid level resistance to earth
Value, accelerating grid level charge/discharge rates, so as to strengthen the dynamic response of adjustment pipe, and then improve the operating efficiency of user.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
A kind of transformer resistance detector power supply stabilization circuit, power supply connects transistor Q1 colelctor electrode, transistor in circuit
Q1 base stage connects transistor Q2 colelctor electrode through resistance R6, and transistor Q2 grounded emitter, transistor Q2 base stage is through resistance
R4 connects operational amplifier U1 6 ports, while resistance R4 connects operational amplifier U1 2 ports through slide rheostat R16, and computing is put
Big device U1 3 ports are through electric capacity C2 connecting resistance R2, while electric capacity C2 connecting resistance R1, transistor Q1 base stage are grounded through resistance 7, together
When transistor Q1 base stage connect transistor Q3 emitter stage, transistor Q3 colelctor electrode connects+12V accessory power supplys through resistance R12, brilliant
Body pipe Q3 base stage connects operational amplifier U3 6 ports through resistance R10, while resistance R10 connects electric capacity C5, electric capacity through resistance R13
C5 connects operational amplifier U3 2 ports, and operational amplifier U3 3 ports connect slide rheostat R17, slide rheostat through resistance R8
The VREF ports of R17 connection control circuits, operational amplifier U3 3 ports connect operational amplifier U2 6 ports through resistance R9, simultaneously
Operational amplifier U3 3 ports connect power supply negative output terminal, operational amplifier U2 6 ports warp through resistance R11 and electric capacity C4 respectively
Electric capacity C3 is grounded, and operational amplifier U2 6 ports connect operational amplifier U2 2 ports, slide rheostat through slide rheostat R15
U2 1 port meets electric capacity C2 through resistance R2, while resistance R2 connecting resistance R1, operational amplifier U2 3 ports connect through resistance R3
Ground, while resistance R3 connects operational amplifier U1 2 ports, operational amplifier U1-U3 4 ports and 7 ports difference through resistance R5
Meet -12V and+12V accessory power supplys.
The operational amplifier U1-U3 uses LM741 type operational amplifiers.
When this is run using the circuit of new design, powered using ± 12V accessory power supplys, just joined with exporting for accessory power supply
Zero level is examined, if this change reduces the level demand of accessory power supply --- use output to bear for reference ground, when linear electricity
When source output voltage is U, then accessory power supply voltage necessarily be greater than U.Real-time output current I0 is obtained by sampling resistor R1.,
After the see-saw circuit amplification formed through amplifier U2, the input in the same direction of error amplification amplifier is passed to, with reference voltage
Vref and output voltage U0 form add circuit together, by selecting suitable resistance value and reference voltage V ref, you can full
Sufficient U0=20-0.3*I0, realize output voltage with the real-time adjust automatically of output current.
Described above is the utility model preferred embodiment, for the ordinary skill in the art, according to this reality
With new teaching, in the case where not departing from principle of the present utility model and spirit, the change that is carried out to embodiment, repair
Change, replace and modification is still fallen within the scope of protection of the utility model.
Claims (2)
1. a kind of transformer resistance detector power supply stabilization circuit, it is characterised in that power supply connects transistor Q1 current collection in circuit
Pole, transistor Q1 base stage connect transistor Q2 colelctor electrode, transistor Q2 grounded emitter, transistor Q2 base through resistance R6
Pole connects operational amplifier U1 6 ports through resistance R4, while resistance R4 connects operational amplifier U1 2 ends through slide rheostat R16
Mouthful, operational amplifier U1 3 ports are through electric capacity C2 connecting resistance R2, while electric capacity C2 connecting resistance R1, and transistor Q1 base stage is through electricity
The ground connection of resistance 7, while transistor Q1 base stage connects transistor Q3 emitter stage, transistor Q3 colelctor electrode meets+12V through resistance R12
Accessory power supply, transistor Q3 base stage connects operational amplifier U3 6 ports through resistance R10, while resistance R10 connects through resistance R13
Electric capacity C5, electric capacity C5 connect operational amplifier U3 2 ports, and operational amplifier U3 3 ports connect slide rheostat through resistance R8
R17, the VREF ports of slide rheostat R17 connection control circuits, operational amplifier U3 3 ports connect operational amplifier through resistance R9
U2 6 ports, while operational amplifier U3 3 ports connect power supply negative output terminal, operation amplifier through resistance R11 and electric capacity C4 respectively
Device U2 6 ports are grounded through electric capacity C3, and operational amplifier U2 6 ports connect operational amplifier U2 2 ends through slide rheostat R15
Mouthful, slide rheostat U2 1 port connects electric capacity C2, while resistance R2 connecting resistance R1, operational amplifier U2 3 ends through resistance R2
Mouth is grounded through resistance R3, while resistance R3 connects operational amplifier U1 2 ports, operational amplifier U1-U3 4 ports through resistance R5
- 12V and+12V accessory power supplys are met respectively with 7 ports.
2. a kind of transformer resistance detector power supply stabilization circuit according to claim 1, it is characterised in that described
Operational amplifier U1-U3 uses LM741 type operational amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791095.2U CN206848851U (en) | 2017-07-03 | 2017-07-03 | A kind of transformer resistance detector power supply stabilization circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791095.2U CN206848851U (en) | 2017-07-03 | 2017-07-03 | A kind of transformer resistance detector power supply stabilization circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206848851U true CN206848851U (en) | 2018-01-05 |
Family
ID=60804159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720791095.2U Expired - Fee Related CN206848851U (en) | 2017-07-03 | 2017-07-03 | A kind of transformer resistance detector power supply stabilization circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206848851U (en) |
-
2017
- 2017-07-03 CN CN201720791095.2U patent/CN206848851U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |