CN107658839A - One kind overload instruction voltage-stabilized power supply circuit - Google Patents
One kind overload instruction voltage-stabilized power supply circuit Download PDFInfo
- Publication number
- CN107658839A CN107658839A CN201711025060.9A CN201711025060A CN107658839A CN 107658839 A CN107658839 A CN 107658839A CN 201711025060 A CN201711025060 A CN 201711025060A CN 107658839 A CN107658839 A CN 107658839A
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- China
- Prior art keywords
- triode
- resistance
- pole
- electric capacity
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/046—Signalling the blowing of a fuse
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
Abstract
The invention discloses one kind to overload instruction voltage-stabilized power supply circuit, it is characterised in that：Mainly by constant-current source circuit, three terminal regulator U, triode VT1, triode VT2, triode VT3, indicator lamp BL, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D1 and voltage-regulator diode D2 are formed.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 overload instruction voltage-stabilized power supply circuit.
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 one kind to overload instruction voltage-stabilized power supply circuit, can be when being overloaded with electric loading with expectation
Instruction is made, 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：
One kind overload instruction voltage-stabilized power supply circuit, mainly by constant-current source circuit, three terminal regulator U, triode VT1, three poles
Pipe VT2, triode VT3, positive pole is sequentially connected after indicator lamp BL and resistance R1 with triode VT1 emitter stage, negative pole with
Electric capacity C1, the P pole that triode VT1 colelctor electrode is connected is connected after resistance R2 with triode VT2 emitter stage, N poles warp
Diode D1, the P pole being connected after resistance R6 with triode VT3 colelctor electrode is connected with triode VT3 colelctor electrode, N poles
The voltage-regulator diode D2 being connected with triode VT3 base stage, triode VT2 emitter stage is serially connected in three terminal regulator U's
Resistance R3 between ADJ pins, the resistance R4 being serially connected between triode VT2 base stage and triode VT3 base stage, is serially connected in
Resistance R5 between triode VT1 colelctor electrode and triode VT3 base stage, it is serially connected in triode VT3 colelctor electrode and transmitting
Resistance R7 between pole, positive pole is connected with three terminal regulator U ADJ pins, negative pole is connected with triode VT1 colelctor electrode
Electric capacity C2, and the electricity that positive pole is connected with triode VT3 emitter stage, negative pole is connected with triode VT1 colelctor electrode
Hold C3 compositions；The colelctor electrode of the triode VT2 is connected with triode VT1 colelctor electrode, and its emitter stage is with triode VT1's
Base stage is connected；The P poles of the diode D1 are connected with electric capacity C1 positive pole, its N pole and three terminal regulator U IN pin phases
Connection；The colelctor electrode of the triode VT3 is connected with three terminal regulator U OUT pins；The positive pole and negative pole of the electric capacity C1
It is connected with constant-current source circuit, the negative pole of the electric capacity C3 collectively constitutes output end with triode VT3 colelctor electrode；The perseverance
Current source circuit then by operational amplifier P1, operational amplifier P2, triode VT4, one of input of positive pole composition power supply,
The electric capacity C4 that negative pole is connected after resistance R9 with operational amplifier P1 negative input end, one end are just defeated with operational amplifier P1's
Enter end be connected, the resistance R8 of other end ground connection, be serially connected in the defeated of operational amplifier P1 negative input end and operational amplifier P2
The resistance R10 gone out between end, positive pole is connected with operational amplifier P2 output end, negative pole and operational amplifier P2 positive input
The electric capacity C5 being connected is held, positive pole is connected with operational amplifier P2 negative input end, negative pole is connected with triode VT4 base stage
Electric capacity C6, the P pole connect is connected after resistance R11 with operational amplifier P1 output end, N poles after resistance R13 with triode
The diode D3 that VT4 colelctor electrode is connected, and one end as another input of power supply, the other end after diode D4
The resistance R12 compositions being connected with triode VT4 emitter stage；The transmitting with triode VT4 respectively of the P poles of the diode D4
Pole and electric capacity C1 negative pole are connected, N poles are connected with resistance R11；The N poles of the diode D3 are connected with electric capacity C1 positive pole
Connect.
Further, the triode VT1~VT4 is 3AX51 triodes.
Further, the diode D1, diode D3 and diode D4 are 1N4001 commutation diodes, voltage stabilizing
Diode D2 is 2CW75 voltage-regulator diodes.
Further, the three terminal regulator U is LM317 voltage-stablizers.
In order to ensure effect, the operational amplifier P1 and operational amplifier P2 is that LM358 single supply general-purpose operations are put
Big device.
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) three terminal regulator U and resistance R3, resistance R6, electric capacity C2 and voltage-regulator diode D2 of the invention can also be formed
One mu balanced circuit, voltage stabilizing processing can be carried out to power supply, in order to provide more stable voltage for load.
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, 2, overload instruction voltage-stabilized power supply circuit of the invention, mainly by three terminal regulator U, triode VT1,
Triode VT2, triode VT3, indicator lamp BL, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance
R4, resistance R5, resistance R6, resistance R7, diode D1 and voltage-regulator diode D2 are formed.In order to ensure the actual use of the present invention
Effect, the three terminal regulator U using LM317 voltage-stablizers, the triode VT1~VT3 using 3AX51 triodes come
Realize, diode D1 is then realized using 1N4001 commutation diodes.The resistance of the resistance R1 is 800 Ω, resistance R2 resistance
It is worth for 4.7k Ω, resistance R4 resistance is 22k Ω, and resistance R5 resistance is 1.5k Ω, and resistance R7 resistance is 500 Ω.It is described
Indicator lamp BL generally uses chromolume realizes that indicator lamp BL in the present embodiment is realized from red globe lamp.
During connection, the positive pole of the electric capacity C1 sequentially emitter stage phase after indicator lamp BL and resistance R1 with triode VT1
Connection, its negative pole are connected with triode VT1 colelctor electrode.The P poles of the diode D1 are after resistance R2 with triode VT2's
Emitter stage is connected, and its colelctor electrode of N poles with triode VT3 after resistance R6 is connected.The P poles of the voltage-regulator diode D2 with
Triode VT3 colelctor electrode is connected, and its N pole is connected with triode VT3 base stage.The resistance R3 is serially connected in triode
Between VT2 emitter stage and three terminal regulator U ADJ pins, the resistance R4 is serially connected in triode VT2 base stage and triode
Between VT3 base stage, the resistance R5 is serially connected between triode VT1 colelctor electrode and triode VT3 base stage, the resistance
R7 is serially connected between triode VT3 colelctor electrode and emitter stage.The positive pole of the electric capacity C2 and three terminal regulator U ADJ pins
It is connected, its negative pole is connected with triode VT1 colelctor electrode.The positive pole of the electric capacity C3 and triode VT3 emitter stage phase
Connection, its negative pole are connected with triode VT1 colelctor electrode.
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 P poles of the diode D1 are connected with electric capacity C1 positive pole, its N pole and three terminal regulator U IN
Pin is connected.The colelctor electrode of the triode VT3 is connected with three terminal regulator U OUT pins.The positive pole of the electric capacity C1
It is connected with negative pole with constant-current source circuit, the negative pole of the electric capacity C3 collectively constitutes output end with triode VT3 colelctor electrode,
The output end connection electric loading.
As shown in Fig. 2 the constant-current source circuit is then by operational amplifier P1, operational amplifier P2, triode VT4, electric capacity
C4, electric capacity C5, electric capacity C6, resistance R8~R13, diode D3 and diode D4 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 D3 and diode D4 then uses 1N4001
Commutation diode is realized.The resistance of the electric capacity C4 is that 220 μ F, electric capacity C5 and electric capacity C6 resistance are 470 μ F.The electricity
Resistance R8 resistance is that 1k Ω, resistance R9 and resistance R10 resistance are that 600 Ω, resistance R11 and resistance R13 resistance is 800
Ω, resistance R12 resistance are 1.2k Ω.The operational amplifier P1 and operational amplifier P2 is general using LM358 single supplies
Operational amplifier is realized.
During connection, one of input of the positive pole of electric capacity C4 composition power supply, its negative pole then after resistance R9 with
Operational amplifier P1 negative input end is connected.One end of the resistance R8 is connected with operational amplifier P1 positive input terminal,
Its other end is grounded；The resistance R10 be serially connected in operational amplifier P1 negative input end and operational amplifier P2 output end it
Between.The positive pole of the electric capacity C5 is connected with operational amplifier P2 output end, the positive input of its negative pole and operational amplifier P2
End is connected.The positive pole of the electric capacity C6 is connected with operational amplifier P2 negative input end, the base of its negative pole and triode VT4
Pole is connected.Output end of the P poles of the diode D3 with operational amplifier P1 after resistance R11 is connected, and its N pole is through resistance
Colelctor electrode after R13 with triode VT4 is connected.Another input of one end of the resistance R12 as power supply, its is another
The emitter stage with triode VT4 after diode D4 is held to be connected；Specifically, the P poles of the diode D4 respectively with triode
VT4 emitter stage is connected with electric capacity C1 negative pole, and its N pole is connected with resistance R11；The N poles of the diode D3 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
Electric capacity C1 is used to be filtered the power supply of constant-current source circuit output, and electric capacity C1 is from the electric capacity that capacitance is 470 μ F, electric capacity C3
Then realized from the electric capacity that capacitance is 220 μ F.The three terminal regulator U and resistance R3, resistance R6, electric capacity C2 and voltage stabilizing two
Pole pipe D2 collectively constitutes a mu balanced circuit, voltage stabilizing processing can be carried out to power supply, in order to provide more stable electricity for load
Pressure.Wherein, the resistance R3 and resistance R6 uses resistance to be realized for 1k Ω resistance, and the capacitance of the electric capacity C2 is then
1000 μ F, voltage-regulator diode D2 are then realized using 2CW75 voltage-regulator diodes.During normal use, indicator lamp BL extinguishes.Work as electricity consumption
During load overload, output voltage reduces, and triode VT2 is turned off with triode VT3, and three terminal regulator U is also cut with diode D1
Only, triode VT1 is turned on, and indicator lamp BL is turned on and is lit, you can and prompting user power utilization load is overloaded and causes circuit to disconnect,
Then it is 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 three terminal regulator U and resistance R3, resistance R6, electric capacity C2 and steady
Pressure diode D2 can also form a mu balanced circuit, can carry out voltage stabilizing processing to power supply, more stable in order to be provided for load
Voltage.
As described above, it can preferably realize the present invention.
Claims (5)
1. one kind overload instruction voltage-stabilized power supply circuit, it is characterised in that：Mainly by constant-current source circuit, three terminal regulator U, triode
VT1, triode VT2, triode VT3, positive pole are sequentially connected after indicator lamp BL and resistance R1 with triode VT1 emitter stage
Connect, the emitter stage of electric capacity C1, P pole that negative pole is connected with triode VT1 colelctor electrode with triode VT2 after resistance R2 is connected
Connect, diode D1, the P pole that N poles are connected after resistance R6 with triode VT3 colelctor electrode and triode VT3 colelctor electrode phase
The voltage-regulator diode D2 that connection, N poles are connected with triode VT3 base stage, emitter stage and three ends for being serially connected in triode VT2 are steady
Resistance R3 between depressor U ADJ pins, the resistance being serially connected between triode VT2 base stage and triode VT3 base stage
R4, the resistance R5 being serially connected between triode VT1 colelctor electrode and triode VT3 base stage, it is serially connected in triode VT3 current collection
Resistance R7 between pole and emitter stage, positive pole is connected with three terminal regulator U ADJ pins, negative pole and triode VT1 current collection
The electric capacity C2 that pole is connected, and positive pole is connected with triode VT3 emitter stage, negative pole and triode VT1 colelctor electrode phase
The electric capacity C3 compositions of connection；The colelctor electrode of the triode VT2 is connected with triode VT1 colelctor electrode, its emitter stage and three
Pole pipe VT1 base stage is connected；The P poles of the diode D1 are connected with electric capacity C1 positive pole, its N pole and three terminal regulator U
IN pins be connected；The colelctor electrode of the triode VT3 is connected with three terminal regulator U OUT pins；The electric capacity C1's
Positive pole is connected with negative pole with constant-current source circuit, and the negative pole of the electric capacity C3 and triode VT3 colelctor electrode collectively constitute defeated
Go out end；
The constant-current source circuit is then by operational amplifier P1, operational amplifier P2, triode VT4, and positive pole composition power supply is wherein
The electric capacity C4 that one input, negative pole are connected after resistance R9 with operational amplifier P1 negative input end, one end is put with computing
Big device P1 positive input terminal is connected, the resistance R8 of other end ground connection, is serially connected in operational amplifier P1 negative input end and computing
Resistance R10 between amplifier P2 output end, positive pole is connected with operational amplifier P2 output end, negative pole and operation amplifier
The electric capacity C5 that device P2 positive input terminal is connected, positive pole is connected with operational amplifier P2 negative input end, negative pole and triode
Electric capacity C6, the P pole that VT4 base stage is connected is connected after resistance R11 with operational amplifier P1 output end, N poles are through resistance
The diode D3 being connected after R13 with triode VT4 colelctor electrode, and another input, another of one end as power supply
Hold the resistance R12 compositions being connected after diode D4 with triode VT4 emitter stage；The P poles of the diode D4 respectively with
Triode VT4 emitter stage and electric capacity C1 negative pole are connected, N poles are connected with resistance R11；The N poles of the diode D3 with
Electric capacity C1 positive pole is connected.
A kind of 2. overload instruction voltage-stabilized power supply circuit according to claim 1, it is characterised in that：The triode VT1~
VT4 is 3AX51 triodes.
A kind of 3. overload instruction voltage-stabilized power supply circuit according to claim 1, it is characterised in that：The diode D1, two
Pole pipe D3 and diode D4 is 1N4001 commutation diodes, and voltage-regulator diode D2 is 2CW75 voltage-regulator diodes.
A kind of 4. overload instruction voltage-stabilized power supply circuit according to claim 1, it is characterised in that：The three terminal regulator U
For LM317 voltage-stablizers.
A kind of 5. overload instruction power circuit according to claim 1, it is characterised in that：The operational amplifier P1 and fortune
It is LM358 single supply general-purpose operation amplifiers to calculate amplifier P2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025060.9A CN107658839A (en) | 2017-10-27 | 2017-10-27 | One kind overload instruction voltage-stabilized power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025060.9A CN107658839A (en) | 2017-10-27 | 2017-10-27 | One kind overload instruction voltage-stabilized power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658839A true CN107658839A (en) | 2018-02-02 |
Family
ID=61096384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711025060.9A Pending CN107658839A (en) | 2017-10-27 | 2017-10-27 | One kind overload instruction voltage-stabilized power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107658839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617020A (en) * | 2018-12-28 | 2019-04-12 | 无锡新大力电机有限公司 | Inexpensive motor actuator sensor power supply overload protecting circuit |
-
2017
- 2017-10-27 CN CN201711025060.9A patent/CN107658839A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617020A (en) * | 2018-12-28 | 2019-04-12 | 无锡新大力电机有限公司 | Inexpensive motor actuator sensor power supply overload protecting circuit |
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Application publication date: 20180202 |