CN103095118A - Self-generation power supply - Google Patents

Self-generation power supply Download PDF

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Publication number
CN103095118A
CN103095118A CN 201210461140 CN201210461140A CN103095118A CN 103095118 A CN103095118 A CN 103095118A CN 201210461140 CN201210461140 CN 201210461140 CN 201210461140 A CN201210461140 A CN 201210461140A CN 103095118 A CN103095118 A CN 103095118A
Authority
CN
China
Prior art keywords
circuit
resistance
voltage
diode
power supply
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.)
Pending
Application number
CN 201210461140
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Chinese (zh)
Inventor
白建社
王建忠
戈浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI ZIZO ELECTRICAL CO Ltd
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WUXI ZIZO ELECTRICAL CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUXI ZIZO ELECTRICAL CO Ltd filed Critical WUXI ZIZO ELECTRICAL CO Ltd
Priority to CN 201210461140 priority Critical patent/CN103095118A/en
Publication of CN103095118A publication Critical patent/CN103095118A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a self-generation power supply which comprises a rectification circuit, a buffer circuit, a voltage stabilizing circuit, a reference voltage circuit, an operational amplifier, a voltage detection circuit, a power supply circuit, a bleeder circuit, a feedback circuit and a sampling resistor. The operational amplifier can control an on station of a triode in the bleeder circuit through the reference voltages circuit and the voltage detection circuit to finish sampling current and generating power by self. Compared with a traditional self-generation power supply, the self-generation power supply is quick in starting, small in starting current and capable of sampling small current and generating power by self.

Description

A kind of authigenic power supply
Technical field
The present invention relates to appliance field, relate in particular to a kind of authigenic power supply.
Background technology
In the controller of power circuit breaker, power supply can not directly obtain from relevant electrical network, in order to avoid can not cause controller work actual effect for controller provides normal power source when these electrical networks break down.Need controller spontaneous electricity from fault current to set up power supply for this reason, be called authigenic power supply.But the starting current of traditional authigenic power supply is large, needs larger rail current to start, and can't sample to little electric current.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of authigenic power supply, it starts fast, and starting current is little, has reached that little electric current namely can be sampled and the purpose of spontaneous electricity.
For reaching this purpose, the present invention by the following technical solutions:
A kind of authigenic power supply comprises rectification circuit, buffer circuit, voltage stabilizing circuit, reference voltage circuit, operational amplifier, voltage detecting circuit, power circuit, bleeder circuit, feedback circuit and sampling resistor;
Described rectification circuit is connected with buffer circuit, is used for the electric current of current transformer output is carried out rectification, and exports to buffer circuit and process;
Described voltage stabilizing circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out voltage stabilizing, powers to single-chip microcomputer;
Described reference voltage circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates reference voltage, and exports to the operational amplifier reverse input end;
Described voltage detecting circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates and detects voltage, and export to the input in the same way of operational amplifier;
Described power circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates supply power voltage, powers to operational amplifier;
The output of described operational amplifier is connected with bleeder circuit, feedback circuit, be used at described reference voltage during greater than described detection voltage, to the bleeder circuit voltage pulse output, make the triode conducting in bleeder circuit, and this pulse voltage is fed back to the input in the same way of operational amplifier by feedback circuit;
Described bleeder circuit is connected with rectification circuit, is used for after described triode conducting, makes sampling resistor and rectification circuit form path;
Described sampling resistor is connected with rectification circuit, is used for after itself and rectification circuit form path, the electric current that rectification circuit is exported being sampled.
Especially, the full bridge rectifier of described rectification circuit for being consisted of by diode D1, diode D2, diode D3 and diode D4, its first input end is connected the output of current transformer with the second input, the first output connects sampling resistor, and the second output connects buffer circuit and bleeder circuit.
Especially, described buffer circuit comprises diode D5 and diode D6; The end of described diode D5 connects the second output of rectification circuit, the other end and node connection voltage stabilizing circuit, reference voltage circuit and voltage detecting circuit after diode D6 one end is connected, the other end connection feedback circuit of diode D6.
Especially, described voltage stabilizing circuit comprises diode D7, capacitor C 1, capacitor C 2, stabilized voltage power supply U1, capacitor C 3 and capacitor C 4;
Wherein, capacitor C 1 is connected with the end of diode D7, the input of stabilized voltage power supply U1 with the first node after capacitor C 2 is connected in parallel, the other end of diode D7 is connected with buffer circuit, capacitor C 1 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 2 is connected in parallel, capacitor C 3 is connected with the output of stabilized voltage power supply U1 with the first node after capacitor C 4 is connected in parallel, and capacitor C 3 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 4 is connected in parallel.
Especially, described reference voltage circuit comprises resistance R 1, diode D8 and resistance R 2; Described diode D8 and resistance R 2 are connected in parallel afterwards and the reverse input end of the node concatenation operation amplifier that resistance R 1 is connected in series.
Especially, described power circuit comprises resistance R 3, diode D9 and capacitor C 5; Described diode D9 and resistance C5 are connected in parallel afterwards and the power input of the node concatenation operation amplifier that resistance R 3 is connected in series.
Especially, described voltage detecting circuit comprises resistance R 4 and resistance R 5; The input in the same way of described resistance R 4 and the node concatenation operation amplifier that is connected in series with resistance R 5.
Especially, described bleeder circuit comprises diode D10 and triode Q1, and described feedback circuit comprises resistance R 6, resistance R 7 and resistance R 8;
Wherein, described diode D10 and triode Q1 are connected in parallel, the output of the grid of triode Q1 and node concatenation operation amplifier after resistance R 6, resistance R 7, resistance R 8 are connected, the power input of the other end concatenation operation amplifier of resistance R 6, the source electrode of the other end connecting triode Q1 of resistance R 7, the earth terminal of the other end concatenation operation amplifier of resistance R 8.
In the present invention, operational amplifier is realized control to triode conducting state in bleeder circuit by reference voltage circuit and voltage detecting circuit, starts soon, and starting current is little, has reached just can sample purpose with spontaneous electricity of little electric current.
Description of drawings
The circuit structure diagram of the authigenic power supply that Fig. 1 provides for the embodiment of the present invention;
The structure chart of voltage stabilizing circuit in the authigenic power supply that Fig. 2 provides for the embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the invention will be further described below in conjunction with drawings and Examples.
Please refer to shown in Figure 1ly, in the present embodiment, authigenic power supply comprises: rectification circuit, buffer circuit, voltage stabilizing circuit, reference voltage circuit, operational amplifier LC, power circuit, voltage detecting circuit, bleeder circuit, feedback circuit and sampling resistor Rc.
Described rectification circuit is connected with buffer circuit, is used for the electric current of Current Transmit output is carried out rectification, and exports to buffer circuit and process.The full bridge rectifier of rectification circuit described in the present embodiment for being consisted of by diode D1, diode D2, diode D3 and diode D4, its first input end is connected the output of Current Transmit with the second input, the first output connects sampling resistor Rc, and the second output connects buffer circuit and bleeder circuit.Described buffer circuit comprises diode D5 and diode D6; The end of described diode D5 connects the second output of rectification circuit, the other end and node connection voltage stabilizing circuit, reference voltage circuit and voltage detecting circuit after diode D6 one end is connected, the other end connection feedback circuit of diode D6.
Described voltage stabilizing circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out voltage stabilizing, powers to single-chip microcomputer.
As shown in Figure 2, voltage stabilizing circuit described in the present embodiment comprises diode D7, capacitor C 1, capacitor C 2, stabilized voltage power supply U1, capacitor C 3 and capacitor C 4.Wherein, capacitor C 1 is connected with the end of diode D7, the input of stabilized voltage power supply U1 with the first node after capacitor C 2 is connected in parallel, the other end of diode D7 is connected with buffer circuit, capacitor C 1 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 2 is connected in parallel, capacitor C 3 is connected with the output of stabilized voltage power supply U1 with the first node after capacitor C 4 is connected in parallel, and capacitor C 3 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 4 is connected in parallel.
Described reference voltage circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates reference voltage, and exports to operational amplifier LC reverse input end.Reference voltage circuit described in the present embodiment comprises resistance R 1, diode D8 and resistance R 2.Described diode D8 and resistance R 2 are connected in parallel afterwards and the reverse input end of the node concatenation operation amplifier LC that resistance R 1 is connected in series.
Described power circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates supply power voltage, gives operational amplifier LC power supply.Power circuit described in the present embodiment comprises resistance R 3, diode D9 and capacitor C 5; Described diode D9 and resistance C5 are connected in parallel afterwards and the power input of the node concatenation operation amplifier LC that resistance R 3 is connected in series.
Described voltage detecting circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates and detects voltage, and export to the input in the same way of operational amplifier LC.Voltage detecting circuit described in the present embodiment comprises resistance R 4 and resistance R 5; The input in the same way of described resistance R 4 and the node concatenation operation amplifier LC that is connected in series with resistance R 5.
The output of described operational amplifier LC is connected with bleeder circuit, feedback circuit, be used at described reference voltage during greater than described detection voltage, to the bleeder circuit voltage pulse output, make the triode Q1 conducting in bleeder circuit, and this pulse voltage is fed back to the input in the same way of operational amplifier LC by feedback circuit.
Described bleeder circuit is connected with rectification circuit, is used for after described triode Q1 conducting, makes sampling resistor Rc and rectification circuit form path.Sampling resistor Rc completes the sampling to the electric current of rectification circuit output after bleeder circuit and rectification circuit formation path.
Bleeder circuit described in the present embodiment comprises diode D10 and triode Q1, and described feedback circuit comprises resistance R 6, resistance R 7 and resistance R 8.Wherein, described diode D10 and triode Q1 are connected in parallel, the output of the grid of triode Q1 and node concatenation operation amplifier LC after resistance R 6, resistance R 7, resistance R 8 are connected, the power input of the other end concatenation operation amplifier LC of resistance R 6, the source electrode of the other end connecting triode Q1 of resistance R 7, the earth terminal of the other end concatenation operation amplifier LC of resistance R 8.
Also be provided with the filter circuit that is consisted of by the capacitor C 6 that is connected in parallel and capacitor C 7 in the present embodiment, be used for the voltage of buffer circuit input is carried out the filtering processing.
Compare with traditional authigenic power supply, the present invention starts soon, and starting current is little, has reached that little electric current just can be sampled and the purpose of spontaneous electricity.
Above-mentioned is only preferred embodiment of the present invention and institute's application technology principle, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed in protection scope of the present invention.

Claims (8)

1. an authigenic power supply, is characterized in that, comprises rectification circuit, buffer circuit, voltage stabilizing circuit, reference voltage circuit, operational amplifier, voltage detecting circuit, power circuit, bleeder circuit, feedback circuit and sampling resistor;
Described rectification circuit is connected with buffer circuit, is used for the electric current of current transformer output is carried out rectification, and exports to buffer circuit and process;
Described voltage stabilizing circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out voltage stabilizing, powers to single-chip microcomputer;
Described reference voltage circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates reference voltage, and exports to the operational amplifier reverse input end;
Described voltage detecting circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates and detects voltage, and export to the input in the same way of operational amplifier;
Described power circuit is connected with buffer circuit, is used for the direct voltage of buffer circuit output is carried out dividing potential drop, generates supply power voltage, powers to operational amplifier;
The output of described operational amplifier is connected with bleeder circuit, feedback circuit, be used at described reference voltage during greater than described detection voltage, to the bleeder circuit voltage pulse output, make the triode conducting in bleeder circuit, and this pulse voltage is fed back to the input in the same way of operational amplifier by feedback circuit;
Described bleeder circuit is connected with rectification circuit, is used for after described triode conducting, makes sampling resistor and rectification circuit form path;
Described sampling resistor is connected with rectification circuit, is used for after itself and rectification circuit form path, the electric current that rectification circuit is exported being sampled.
2. authigenic power supply according to claim 1, it is characterized in that, the full bridge rectifier of described rectification circuit for being consisted of by diode D1, diode D2, diode D3 and diode D4, its first input end is connected the output of current transformer with the second input, the first output connects sampling resistor, and the second output connects buffer circuit and bleeder circuit.
3. authigenic power supply according to claim 2, is characterized in that, described buffer circuit comprises diode D5 and diode D6; The end of described diode D5 connects the second output of rectification circuit, the other end and node connection voltage stabilizing circuit, reference voltage circuit and voltage detecting circuit after diode D6 one end is connected, the other end connection feedback circuit of diode D6.
4. authigenic power supply according to claim 3, is characterized in that, described voltage stabilizing circuit comprises diode D7, capacitor C 1, capacitor C 2, stabilized voltage power supply U1, capacitor C 3 and capacitor C 4;
Wherein, capacitor C 1 is connected with the end of diode D7, the input of stabilized voltage power supply U1 with the first node after capacitor C 2 is connected in parallel, the other end of diode D7 is connected with buffer circuit, capacitor C 1 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 2 is connected in parallel, capacitor C 3 is connected with the output of stabilized voltage power supply U1 with the first node after capacitor C 4 is connected in parallel, and capacitor C 3 is connected with the earth terminal of stabilized voltage power supply U1 with the second node after capacitor C 4 is connected in parallel.
5. authigenic power supply according to claim 4, is characterized in that, described reference voltage circuit comprises resistance R 1, diode D8 and resistance R 2; Described diode D8 and resistance R 2 are connected in parallel afterwards and the reverse input end of the node concatenation operation amplifier that resistance R 1 is connected in series.
6. authigenic power supply according to claim 5, is characterized in that, described power circuit comprises resistance R 3, diode D9 and capacitor C 5; Described diode D9 and resistance C5 are connected in parallel afterwards and the power input of the node concatenation operation amplifier that resistance R 3 is connected in series.
7. authigenic power supply according to claim 6, is characterized in that, described voltage detecting circuit comprises resistance R 4 and resistance R 5; The input in the same way of described resistance R 4 and the node concatenation operation amplifier that is connected in series with resistance R 5.
8. authigenic power supply according to claim 7, is characterized in that, described bleeder circuit comprises diode D10 and triode Q1, and described feedback circuit comprises resistance R 6, resistance R 7 and resistance R 8;
Wherein, described diode D10 and triode Q1 are connected in parallel, the output of the grid of triode Q1 and node concatenation operation amplifier after resistance R 6, resistance R 7, resistance R 8 are connected, the power input of the other end concatenation operation amplifier of resistance R 6, the source electrode of the other end connecting triode Q1 of resistance R 7, the earth terminal of the other end concatenation operation amplifier of resistance R 8.
CN 201210461140 2012-11-15 2012-11-15 Self-generation power supply Pending CN103095118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201210461140 CN103095118A (en) 2012-11-15 2012-11-15 Self-generation power supply

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Application Number Priority Date Filing Date Title
CN 201210461140 CN103095118A (en) 2012-11-15 2012-11-15 Self-generation power supply

Publications (1)

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CN103095118A true CN103095118A (en) 2013-05-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186849A (en) * 2015-10-22 2015-12-23 宁波三星医疗电气股份有限公司 Power-stealing-preventing power supply circuit
CN110641399A (en) * 2019-10-14 2020-01-03 广州创锐车用电器有限公司 Power management circuit, method and motor vehicle with power management circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186849A (en) * 2015-10-22 2015-12-23 宁波三星医疗电气股份有限公司 Power-stealing-preventing power supply circuit
CN110641399A (en) * 2019-10-14 2020-01-03 广州创锐车用电器有限公司 Power management circuit, method and motor vehicle with power management circuit

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Application publication date: 20130508