CN107623431A - A kind of power overload situation indicates ripple peak restrained formula buffer circuit - Google Patents
A kind of power overload situation indicates ripple peak restrained formula buffer circuit Download PDFInfo
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- CN107623431A CN107623431A CN201711018954.5A CN201711018954A CN107623431A CN 107623431 A CN107623431 A CN 107623431A CN 201711018954 A CN201711018954 A CN 201711018954A CN 107623431 A CN107623431 A CN 107623431A
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- triode
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- electric capacity
- operational amplifier
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Abstract
The invention discloses a kind of power overload situation to indicate ripple peak restrained formula buffer circuit, it is characterised in that：Mainly by constant-current source circuit, operational amplifier P1, operational amplifier P2, triode VT1, triode VT2, triode VT3, indicator lamp BL, inductance L, electric capacity C1~C6, resistance R1~R11, diode D1, voltage-regulator diode D2 and diode D3 compositions.The present invention is reasonable in design, luminous energy does not meet the requirement of power circuit, it can also be shown when being overloaded with electric loading by indicator lamp, the situation of user power utilization load overload can be prompted in the very first time, user no longer needs to spend time energy to go investigation to cause the abnormal conditions stopped work with electric loading, therefore brought great convenience to user, be adapted to promote the use.
Description
Technical field
The present invention relates to a kind of power circuit, more particularly to a kind of power overload situation instruction ripple peak restrained formula buffering electricity
Road.
Background technology
Power circuit is used to connect power supply and use electric loading, so that by power supply supply load.When loading overload, power supply electricity
Lu Zehui disconnects, to prevent from damaging the electronic device of power circuit and use electric loading.After power circuit disconnects, power supply can not be given negative
Power supply is carried, load can then be stopped.Due to loading because the work that abends then needs investigation appearance abnormal, use
When be difficult the very first time find power circuit because with electric loading overload and cause circuit to disconnect, so as to load abnormal stop work
Investigation work brings great difficulty.
The content of the invention
It is an object of the invention to provide a kind of power overload situation to indicate ripple peak restrained formula buffer circuit, so that expect can be
Instruction is made when being overloaded with electric loading, so as in the situation of very first time prompting user power utilization load overload.
The present invention is achieved through the following technical solutions：
A kind of power overload situation indicates ripple peak restrained formula buffer circuit, mainly by constant-current source circuit, operational amplifier P1,
Operational amplifier P2, triode VT1, triode VT2, triode VT3, positive pole are just defeated with operational amplifier P1 after inductance L
Enter end be connected, the electric capacity C1 that negative pole is connected after resistance R1 with operational amplifier P1 output end, positive pole and operation amplifier
The electric capacity C2 that device P1 negative input end is connected, negative pole is connected with triode VT1 colelctor electrode, positive pole and operational amplifier P1
Output end be connected, the electric capacity C3 that negative pole is connected with triode VT1 colelctor electrode, be serially connected in operational amplifier P1 output
Resistance R2 between end and triode VT1 emitter stage, is serially connected between electric capacity C1 negative pole and triode VT2 emitter stage
Resistance R4, one end is connected after indicator lamp BL with electric capacity C1 negative pole, the other end is connected with triode VT1 emitter stage
Resistance R3, P pole is connected with electric capacity C1 negative pole, the diode that N poles are connected after resistance R5 with triode VT3 colelctor electrode
The voltage-regulator diode D2 that D1, P pole are connected with triode VT3 colelctor electrode, N poles are connected with triode VT3 base stage, concatenation
Resistance R6 between triode VT2 base stage and triode VT3 base stage, it is serially connected in triode VT1 colelctor electrode and three poles
Resistance R7 between pipe VT3 base stage, positive pole is connected with triode VT3 emitter stage, negative pole and triode VT1 colelctor electrode
The electric capacity C4 being connected, the resistance R8 being serially connected between triode VT3 colelctor electrode and emitter stage, is serially connected in operational amplifier P2
Positive input terminal and output end between resistance R9, be serially connected in triode VT3 colelctor electrode and operational amplifier P2 output end
Between resistance R10, positive pole is connected after resistance R11 with operational amplifier P2 negative input ends, negative pole ground connection electric capacity C5, just
The electric capacity C6 that pole is connected with operational amplifier P2 output end, negative pole is connected with triode VT1 colelctor electrode, and P poles
It is connected with triode VT3 colelctor electrode, the diode D3 compositions that N poles are connected with operational amplifier P2 output end；It is described
Triode VT2 colelctor electrode is connected with triode VT1 colelctor electrode, and its emitter stage is connected with triode VT1 base stage；Institute
The emitter stage for stating triode VT3 is connected with operational amplifier P2 positive input terminal；The positive pole of the electric capacity C1 is with electric capacity C2's
Negative pole is connected with constant-current source circuit, and the negative pole of the electric capacity C6 collectively constitutes output end with triode VT3 colelctor electrode；
The constant-current source circuit then forms power supply by operational amplifier P3, operational amplifier P4, triode VT4, positive pole
The electric capacity C7 that one of input, negative pole are connected after resistance R13 with operational amplifier P3 negative input end, one end and fortune
The positive input terminal for calculating amplifier P3 is connected, the resistance R12 of other end ground connection, be serially connected in operational amplifier P3 negative input end with
Resistance R14 between operational amplifier P4 output end, positive pole is connected with operational amplifier P4 output end, negative pole and computing
The electric capacity C8 that amplifier P4 positive input terminal is connected, positive pole is connected with operational amplifier P4 negative input end, negative pole and three
Electric capacity C9, the P pole that pole pipe VT4 base stage is connected is connected after resistance R15 with operational amplifier P3 output end, N poles warp
The diode D4 being connected after resistance R17 with triode VT4 colelctor electrode, and one end as power supply another input,
The resistance R16 compositions that the other end is connected after diode D5 with triode VT4 emitter stage；The P poles of the diode D5 point
It is not connected with triode VT4 emitter stage and electric capacity C2 negative pole, N poles are connected with resistance R16；The N of the diode D4
Pole is connected with electric capacity C1 positive pole.
Further, the triode VT1~VT4 is 3AX51 triodes.
Further, the diode D1, diode D3~D5 are 1N4001 commutation diodes, voltage-regulator diode D2
For 2CW75 voltage-regulator diodes.
In order to ensure effect, the operational amplifier P1~P4 is LM358 single supply general-purpose operation amplifiers.
The present invention compared with prior art, has advantages below and beneficial effect：
(1) it is of the invention to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.The present invention is reasonable in design, not only
The requirement of power circuit can be met, moreover it is possible to shown when being overloaded with electric loading by indicator lamp, can be in the very first time
Prompt user power utilization load overload situation, user no longer need spend time energy go investigation cause with electric loading stop work it is different
Reason condition, therefore brought great convenience to user.
(2) operational amplifier P1 of the invention and inductance L, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1 and resistance R2
Ripple peak restrained circuit can be formed, harmonic wave in input voltage can be eliminated or suppressed, and wave energization pressure and wave can be led to
Electric current is suppressed, and so as to improve the efficiency of the present invention, and effectively load can be prevented to be damaged.
(3) operational amplifier P2 of the invention and resistance R9, resistance R10, resistance R11, electric capacity C5, electric capacity C6 and two poles
Pipe D3 can also form buffer circuit, the voltage and current that electronic component is born when the buffer circuit can be to circuit turn-on and shut-off
Waveform is adjusted or buffered, and reduces impact of the voltage and current to electronic component, and can keep the waveform of voltage and current
Stable state, moreover it is possible to loss of the circuit in turn-on and turn-off to voltage and current is reduced, so as to which the profit of the present invention can also be improved
With rate.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structure chart of the constant-current source circuit of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment
As shown in figure 1, the power overload situation instruction ripple peak restrained formula buffer circuit of the present invention, mainly by constant-current source electricity
Road, operational amplifier P1, operational amplifier P2, triode VT1, triode VT2, triode VT3, indicator lamp BL, inductance L, electricity
Hold C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity
Hinder R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, diode D1, voltage-regulator diode D2 and diode D3 groups
Into.In order to ensure the practical effect of the present invention, the triode VT1~VT3 is realized using 3AX51 triodes, two
Pole pipe D1 is then realized using 1N4001 commutation diodes.The resistance of the resistance R3 is 800 Ω, and resistance R4 resistance is 4.7k
Ω, resistance R5 and resistance R8 resistance are 500 Ω, and resistance R6 resistance is 22k Ω, and resistance R7 resistance is 1.5k Ω.Institute
Indicator lamp BL generally uses chromolume is stated to realize, the indicator lamp BL in the present embodiment is realized from red globe lamp.
During connection, the positive input terminal of the positive pole of the electric capacity C1 with operational amplifier P1 after inductance L is connected, its negative pole
Output end with operational amplifier P1 after resistance R1 is connected.The positive pole of the electric capacity C2 and operational amplifier P1 negative input
End is connected, and its negative pole is connected with triode VT1 colelctor electrode.The positive pole of the electric capacity C3 and operational amplifier P1 output
End is connected, and its negative pole is connected with triode VT1 colelctor electrode.The resistance R2 is serially connected in operational amplifier P1 output end
Between triode VT1 emitter stage, the resistance R4 is serially connected between electric capacity C1 negative pole and triode VT2 emitter stage.
Negative pole of the one end of the resistance R3 with electric capacity C1 after indicator lamp BL is connected, the emitter stage of its other end and triode VT1
It is connected.The P poles of the diode D1 are connected with electric capacity C1 negative pole, its current collection of N poles after resistance R5 with triode VT3
Pole is connected.The P poles of the voltage-regulator diode D2 are connected with triode VT3 colelctor electrode, its N pole and triode VT3 base
Pole is connected.The resistance R6 is serially connected between triode VT2 base stage and triode VT3 base stage, the resistance R7 concatenations
Between triode VT1 colelctor electrode and triode VT3 base stage.The positive pole of the electric capacity C4 and triode VT3 emitter stage
It is connected, its negative pole is connected with triode VT1 colelctor electrode.
The resistance R8 is serially connected between triode VT3 colelctor electrode and emitter stage, and the resistance R9 is serially connected in computing and put
Between big device P2 positive input terminal and output end, the resistance R10 is serially connected in triode VT3 colelctor electrode and operational amplifier P2
Output end between, the positive pole of the electric capacity C5 is connected after resistance R11 with operational amplifier P2 negative input ends, and its negative pole connects
Ground.The positive pole of the electric capacity C6 is connected with operational amplifier P2 output end, and its negative pole is connected with triode VT1 colelctor electrode
Connect.The P poles of the diode D3 are connected with triode VT3 colelctor electrode, and its N pole is connected with operational amplifier P output end
Connect.
Meanwhile the colelctor electrode of the triode VT2 is connected with triode VT1 colelctor electrode, its emitter stage and triode
VT1 base stage is connected.The emitter stage of the triode VT3 is connected with operational amplifier P2 positive input terminal.The electric capacity
C1 positive pole is connected with electric capacity C2 negative pole with constant-current source circuit, the negative pole of the electric capacity C4 and triode VT3 current collection
Pole collectively constitutes output end, the output end connection electric loading.
As shown in Fig. 2 the constant-current source circuit is then by operational amplifier P3, operational amplifier P4, triode VT4, electric capacity
C7, electric capacity C8, electric capacity C9, resistance R12~R17, diode D4 and diode D5 are formed.In order to ensure actually making for the present invention
With effect, the triode VT4 is also realized using 3AX51 triodes, and diode D4 and diode D5 then uses 1N4001
Commutation diode is realized.The resistance of the electric capacity C7 is that 220 μ F, electric capacity C8 and electric capacity C9 resistance are 470 μ F.The electricity
Resistance R12 resistance is that 1k Ω, resistance R13 and resistance R14 resistance are 600 Ω, and resistance R15 and resistance R17 resistance are
800 Ω, resistance R16 resistance are 1.2k Ω.The operational amplifier P3 and operational amplifier P4 is led to using LM358 single supplies
Realized with operational amplifier.
During connection, one of input of the positive pole of electric capacity C7 composition power supply, its negative pole then after resistance R13 with
Operational amplifier P3 negative input end is connected.One end of the resistance R12 is connected with operational amplifier P3 positive input terminal,
Its other end is grounded；The resistance R14 be serially connected in operational amplifier P3 negative input end and operational amplifier P4 output end it
Between.The positive pole of the electric capacity C8 is connected with operational amplifier P4 output end, the positive input of its negative pole and operational amplifier P4
End is connected.The positive pole of the electric capacity C9 is connected with operational amplifier P4 negative input end, the base of its negative pole and triode VT4
Pole is connected.Output end of the P poles of the diode D4 with operational amplifier P3 after resistance R15 is connected, and its N pole is through resistance
Colelctor electrode after R17 with triode VT4 is connected.Another input of one end of the resistance R16 as power supply, its is another
The emitter stage with triode VT4 after diode D5 is held to be connected；Specifically, the P poles of the diode D5 respectively with triode
VT4 emitter stage is connected with electric capacity C1 negative pole, and its N pole is connected with resistance R16；The N poles of the diode D4 and electric capacity
C1 positive pole is connected.
In use, constant-current source circuit can be handled the foreign current of input, so that it is guaranteed that the present invention possess it is constant
Operating current, avoid it from producing electromagnetic interference signal during work, greatly improve the stability of the present invention.It is described
Operational amplifier P1 and inductance L, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1 and resistance R2 collectively constitute ripple peak restrained
Circuit, harmonic wave in the voltage of constant-current source circuit output can be eliminated or suppressed, and can be powered to wave pressure and unrestrained energization flow into
Row suppresses, and so as to improve the efficiency of the present invention, and effectively load can be prevented to be damaged.Wherein, the operational amplifier P1
Using LM358 single supply general-purpose operation amplifiers, the inductance L is then using 100 μ h filter inductance.The electric capacity
C1 and electric capacity C2 is from the electric capacity that capacitance is 470 μ F, and what electric capacity C3 was selected is the electric capacity that capacitance is 1000 μ F, and electric capacity C4 is then selected
Realized with the electric capacity that capacitance is 220 μ F.The resistance of the resistance R1 is 680 Ω, and resistance R2 is 600 Ω.The pole of voltage stabilizing two
Pipe D2 can play a part of voltage stabilizing, and voltage-regulator diode D2 is realized using 2CW75 voltage-regulator diodes.
The operational amplifier P2 and resistance R9, resistance R10, resistance R11, electric capacity C5, electric capacity C6 and diode D3 are total to
With composition buffer circuit, the voltage and current waveform that electronic component is born when the buffer circuit can be to circuit turn-on and shut-off enters
Row adjustment or buffering, reduce impact of the voltage and current to electronic component, and the waveform of voltage and current can be made to keep stable shape
State, moreover it is possible to loss of the circuit in turn-on and turn-off to voltage and current is reduced, so as to which the utilization rate of the present invention can also be improved.Its
In, the operational amplifier P2 is using realizing with operational amplifier P1 identical LM358 single supply general-purpose operation amplifiers, institute
The resistance for stating resistance R9~R11 is 860 Ω, and the capacitance that the capacitance of the electric capacity C5 is 330 μ F, the electric capacity C6 is 20 μ F,
The diode D3 realizes using with diode D1 identical 1N4001 commutation diodes.
During normal use, indicator lamp BL extinguishes.When being overloaded with electric loading, output voltage reduces, triode VT2 and three poles
Pipe VT3 is turned off, and diode D1 is also switched off, and triode VT1 conductings, indicator lamp BL is turned on and is lit, you can prompting user
Overloaded with electric loading and cause circuit to disconnect, be then stopped with electric loading.
The present invention be not only simple in structure and cost is relatively low, be also convenient for safeguarding.The present invention is reasonable in design, and luminous energy is not expired
The requirement of sufficient power circuit, moreover it is possible to shown, can be prompted in the very first time by indicator lamp when being overloaded with electric loading
The situation of user power utilization load overload, user no longer need to spend time energy to go investigation to cause the abnormal feelings stopped work with electric loading
Condition, therefore brought great convenience to user.Meanwhile the operational amplifier P1 and inductance L, electric capacity C1, electric capacity C2, electric capacity
C3, resistance R1 and resistance R2 can form ripple peak restrained circuit, harmonic wave in input voltage can be eliminated or suppressed, and
The pressure that can be powered to wave and unrestrained galvanization suppress, and so as to improve the efficiency of the present invention, and can effectively prevent that load from being damaged
It is bad.The operational amplifier P2 and resistance R9, resistance R10, resistance R11, electric capacity C5, electric capacity C6 and diode D3 can also be formed
Buffer circuit, the voltage and current waveform that electronic component is born when the buffer circuit can be to circuit turn-on and shut-off are adjusted
Or buffering, reduce impact of the voltage and current to electronic component, and the waveform of voltage and current can be made to keep stable state, moreover it is possible to
Loss of the circuit in turn-on and turn-off to voltage and current is reduced, so as to which the utilization rate of the present invention can also be improved.
As described above, it can preferably realize the present invention.
Claims (4)
1. a kind of power overload situation indicates ripple peak restrained formula buffer circuit, it is characterised in that：Mainly by constant-current source circuit, computing
Amplifier P1, operational amplifier P2, triode VT1, triode VT2, triode VT3, positive pole after inductance L with operational amplifier
The electric capacity C1 that P1 positive input terminal is connected, negative pole is connected after resistance R1 with operational amplifier P1 output end, positive pole with
The electric capacity C2 that operational amplifier P1 negative input end is connected, negative pole is connected with triode VT1 colelctor electrode, positive pole and computing
The electric capacity C3 that amplifier P1 output end is connected, negative pole is connected with triode VT1 colelctor electrode, is serially connected in operational amplifier
Resistance R2 between P1 output end and triode VT1 emitter stage, it is serially connected in electric capacity C1 negative pole and triode VT2 transmitting
Resistance R4 between pole, one end is connected after indicator lamp BL with electric capacity C1 negative pole, the other end and triode VT1 emitter stage
Resistance R3, the P pole being connected is connected with electric capacity C1 negative pole, colelctor electrode of the N poles with triode VT3 after resistance R5 is connected
Diode D1, P pole be connected with triode VT3 colelctor electrode, the pole of voltage stabilizing two that N poles are connected with triode VT3 base stage
Pipe D2, the resistance R6 being serially connected between triode VT2 base stage and triode VT3 base stage, it is serially connected in triode VT1 current collection
Resistance R7 between pole and triode VT3 base stage, positive pole is connected with triode VT3 emitter stage, negative pole and triode VT1
The electric capacity C4 that is connected of colelctor electrode, the resistance R8 being serially connected between triode VT3 colelctor electrode and emitter stage, be serially connected in computing
Resistance R9 between amplifier P2 positive input terminal and output end, it is serially connected in triode VT3 colelctor electrode and operational amplifier P2
Output end between resistance R10, positive pole is connected after resistance R11 with operational amplifier P2 negative input ends, negative pole ground connection
Electric capacity C5, the electric capacity that positive pole is connected with operational amplifier P2 output end, negative pole is connected with triode VT1 colelctor electrode
C6, and the diode D3 that P poles are connected with triode VT3 colelctor electrode, N poles are connected with operational amplifier P2 output end
Composition；The colelctor electrode of the triode VT2 is connected with triode VT1 colelctor electrode, the base stage of its emitter stage and triode VT1
It is connected；The emitter stage of the triode VT3 is connected with operational amplifier P2 positive input terminal；The positive pole of the electric capacity C1 with
Electric capacity C2 negative pole is connected with constant-current source circuit, and the colelctor electrode of the negative pole and triode VT3 of the electric capacity C6 collectively constitutes
Output end；
The constant-current source circuit is then by operational amplifier P3, operational amplifier P4, triode VT4, and positive pole composition power supply is wherein
The electric capacity C7 that one input, negative pole are connected after resistance R13 with operational amplifier P3 negative input end, one end is put with computing
Big device P3 positive input terminal is connected, the resistance R12 of other end ground connection, is serially connected in operational amplifier P3 negative input end and computing
Resistance R14 between amplifier P4 output end, positive pole is connected with operational amplifier P4 output end, negative pole and operation amplifier
The electric capacity C8 that device P4 positive input terminal is connected, positive pole is connected with operational amplifier P4 negative input end, negative pole and triode
Electric capacity C9, the P pole that VT4 base stage is connected is connected after resistance R15 with operational amplifier P3 output end, N poles are through resistance
The diode D4 being connected after R17 with triode VT4 colelctor electrode, and another input, another of one end as power supply
Hold the resistance R16 compositions being connected after diode D5 with triode VT4 emitter stage；The P poles of the diode D5 respectively with
Triode VT4 emitter stage and electric capacity C2 negative pole are connected, N poles are connected with resistance R16；The N poles of the diode D4 with
Electric capacity C1 positive pole is connected.
A kind of 2. power overload situation instruction ripple peak restrained formula buffer circuit according to claim 1, it is characterised in that：Institute
It is 3AX51 triodes to state triode VT1~VT4.
A kind of 3. power overload situation instruction ripple peak restrained formula buffer circuit according to claim 1, it is characterised in that：Institute
State diode D1, diode D3~D5 is 1N4001 commutation diodes, voltage-regulator diode D2 is 2CW75 voltage-regulator diodes.
A kind of 4. power overload situation instruction ripple peak restrained formula buffer circuit according to claim 1, it is characterised in that：Institute
It is LM358 single supply general-purpose operation amplifiers to state operational amplifier P1~P4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711018954.5A CN107623431A (en) | 2017-10-27 | 2017-10-27 | A kind of power overload situation indicates ripple peak restrained formula buffer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711018954.5A CN107623431A (en) | 2017-10-27 | 2017-10-27 | A kind of power overload situation indicates ripple peak restrained formula buffer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107623431A true CN107623431A (en) | 2018-01-23 |
Family
ID=61093215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711018954.5A Pending CN107623431A (en) | 2017-10-27 | 2017-10-27 | A kind of power overload situation indicates ripple peak restrained formula buffer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107623431A (en) |
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2017
- 2017-10-27 CN CN201711018954.5A patent/CN107623431A/en active Pending
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Application publication date: 20180123 |