CN206195601U - Low pressure supplies electrofiltration ripples power supply circuit - Google Patents

Low pressure supplies electrofiltration ripples power supply circuit Download PDF

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Publication number
CN206195601U
CN206195601U CN201621133278.7U CN201621133278U CN206195601U CN 206195601 U CN206195601 U CN 206195601U CN 201621133278 U CN201621133278 U CN 201621133278U CN 206195601 U CN206195601 U CN 206195601U
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CN
China
Prior art keywords
electric capacity
resistance
triode
power supply
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.)
Expired - Fee Related
Application number
CN201621133278.7U
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Chinese (zh)
Inventor
梁毅
俞德军
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.)
CHENGDU SAIANG ELECTRONIC TECHNOLOGY Co Ltd
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CHENGDU SAIANG ELECTRONIC TECHNOLOGY Co Ltd
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Priority to CN201621133278.7U priority Critical patent/CN206195601U/en
Application granted granted Critical
Publication of CN206195601U publication Critical patent/CN206195601U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a low pressure supplies electrofiltration ripples power supply circuit, its characterized in that: mainly by transformer T, diode rectifier U, operational amplifier P, triode VT1, triode VT2, inductance L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, diode D1, zener diode D2 and diode D3 constitute. The utility model is not only simple in structure, the maintenance and inspection of being convenient for, and the cost is lower, and applicable face is wider, can also change and arouse that output voltage adjusts when undulant at line voltage or load current simultaneously to export power supply's stability can be guaranteed, wide use is fit for.

Description

A kind of low-voltage power supply filter power supply circuit
Technical field
The utility model is related to a kind of power circuit, more particularly to a kind of low-voltage power supply filter power supply circuit.
Background technology
With the development of science and technology, electronic technology is able to fast development, and electronics categories increasingly enrich, various each The electronic product of sample enters into the family of common people so that daily life also be unable to do without electronic product.Current family The 220V civil powers that electricity consumption is used mostly, to needing to use the low-voltage power supply filter power supply circuit to carry out using the relatively low electrical appliance of voltage Voltage treatment.Due to the low-voltage power supply filter power supply circuit that uses at present not only complex structure, and less stable, therefore hold Easily influence the service life of electrical appliance.
Utility model content
The purpose of this utility model is to provide a kind of low-voltage power supply filter power supply circuit, is supplied to simplify existing low pressure The structure of electrofiltration ripple power circuit, and improve the stability of power circuit.
The utility model is achieved through the following technical solutions:
A kind of low-voltage power supply filter power supply circuit, mainly by transformer T, diode rectifier U, operational amplifier P, three poles Pipe VT1, triode VT2, positive pole is connected with the positive output end of diode rectifier U, negative pole and diode rectifier U it is negative defeated Go out the electric capacity C1 that end is connected, be serially connected in the resistance R1 between the base stage of the positive pole of electric capacity C1 and triode VT1, be serially connected in three poles Resistance R2 between the emitter stage of pipe VT1 and the emitter stage of triode VT2, is serially connected in the emitter stage and triode of triode VT1 Resistance R3, P pole between the colelctor electrode of VT2 is connected with the negative pole of electric capacity C1, N poles are connected with the base stage of triode VT1 Diode D1, P pole is connected with the emitter stage of triode VT1, the voltage stabilizing that N poles are connected after resistance R4 with the negative pole of electric capacity C1 Diode D2, the electric capacity C2 that positive pole is connected with the colelctor electrode of triode VT2, negative pole is connected with the negative pole of electric capacity C1, positive pole Be connected with the negative input end of operational amplifier P after resistance R5, the electric capacity C3 that negative pole is connected with the negative pole of electric capacity C1, concatenation Resistance R6 between the output end of operational amplifier P and the positive pole of electric capacity C3, be serially connected in the positive input terminal of operational amplifier P with Inductance L between negative input end, and positive pole be connected with the output end of operational amplifier P after diode D3, negative pole with electricity Hold the electric capacity C4 compositions that the negative pole of C1 is connected;The positive pole of the electric capacity C1 is connected with the colelctor electrode of triode VT1, its negative pole Ground connection;The base stage of the triode VT1 is connected with the base stage of triode VT2;Put with computing the N poles of the voltage-regulator diode D2 The negative input end of big device P is connected;The P poles of the diode D3 are connected with the output end of operational amplifier P, its N pole with electricity The positive pole for holding C4 is connected;One input of the diode rectifier U is non-of the same name with the secondary inductance coil of transformer T End is connected, its another input is connected with the Same Name of Ends of the secondary inductance coil of transformer T;The original of the transformer T The two ends composition power input of side inductance coil, positive pole and the negative pole of the electric capacity C4 constitute output end.
Further, the triode VT1 and triode VT2 is 3CG15 type triodes.
Further, the resistance of the resistance R1 is 300 Ω, and the resistance of the resistance R2~R4 is 260 Ω, described The resistance of resistance R5 and resistance R6 is 250 Ω.
Further, the capacitance that the capacitance of the electric capacity C1 and electric capacity C2 is 100 μ F, the electric capacity C3 is 110 μ F, The capacitance of the electric capacity C4 is 120 μ F.
In order to the utility model is better achieved, the diode D1 and diode D3 is 1N4007 type diodes, institute Voltage-regulator diode D2 is stated for 2CW110 type voltage-regulator diodes.
In order to ensure effect, the transformer T is EF20 step-down transformers;The diode rectifier U is all-wave three-phase Rectifier MT3510W, the operational amplifier P are LM324 type operational amplifiers.
The utility model compared with prior art, with advantages below and beneficial effect:
(1) the utility model is not only simple in structure, and is easy to maintenance and inspection, and cost is relatively low, and applicable surface is wider, while Can also be adjusted when line voltage or load current change and cause output voltage to fluctuate, so as to out-put supply can be ensured Stability.Meanwhile, output voltage, the difference of electric current that the utility model can also be as requested, selection use the electricity of different parameters Subcomponent, so that the use face of circuit of the present utility model is more extensive.
(2) operational amplifier P of the present utility model and inductance L, resistance R5, resistance R6, electric capacity C3 and diode D3 energy One filter circuit of composition, can be filtered treatment, so as to can ensure that the stability of out-put supply to out-put supply.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but implementation method of the present utility model is not It is limited to this.
Embodiment
As shown in figure 1, low-voltage power supply filter power supply circuit of the present utility model, mainly by transformer T, diode rectifier U, operational amplifier P, triode VT1, triode VT2, inductance L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, resistance R1, electricity Resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, diode D1, voltage-regulator diode D2 and diode D3 composition.Wherein, The resistance of the resistance R1 is 300 Ω, and the resistance of the resistance R2~R4 is 260 Ω, the resistance of the resistance R5 and resistance R6 Value is 250 Ω.Meanwhile, the capacitance that the capacitance of the electric capacity C1 and electric capacity C2 is 100 μ F, the electric capacity C3 is 110 μ F, institute The capacitance for stating electric capacity C4 is 120 μ F.In order to ensure practical effect of the present utility model, during implementation, the triode VT1 with Triode VT2 realizes that the diode D1 and diode D3 uses 1N4007 type diodes using 3CG15 types triode To realize, the voltage-regulator diode D2 is then realized using 2CW110 types voltage-regulator diode.The transformer T is depressured using EF20 Transformer realizes that the diode rectifier U then realized using all-wave three-phase rectifier MT3510W.The inductance L is used Be 100 μ h filter inductance, the operational amplifier P then realized using LM324 types operational amplifier.
During connection, the positive pole of the electric capacity C1 is connected with the positive output end of diode rectifier U, its negative pole and diode The negative output terminal of rectifier U is connected.The resistance R1 is serially connected between the base stage of the positive pole of electric capacity C1 and triode VT1, institute State resistance R2 to be serially connected between the emitter stage of the emitter stage of triode VT1 and triode VT2, the resistance R3 is serially connected in triode Between the emitter stage of VT1 and the colelctor electrode of triode VT2.The P poles of the diode D1 are connected with the negative pole of electric capacity C1, its N Pole is connected with the base stage of triode VT1.The P poles of the voltage-regulator diode D2 are connected with the emitter stage of triode VT1, its N Negative pole of the pole with electric capacity C1 after resistance R4 is connected.The positive pole of the electric capacity C2 is connected with the colelctor electrode of triode VT2, its Negative pole is connected with the negative pole of electric capacity C1.The positive pole of the electric capacity C3 after resistance R5 with the negative input end phase of operational amplifier P Connection, its negative pole is connected with the negative pole of electric capacity C1.The resistance R6 is serially connected in the output end of operational amplifier P with electric capacity C3's Between positive pole, the inductance L is serially connected between the positive input terminal of operational amplifier P and negative input end.The positive pole of the electric capacity C4 Output end with operational amplifier P after diode D3 is connected, and its negative pole is connected with the negative pole of electric capacity C1.
Meanwhile, the positive pole of the electric capacity C1 is connected with the colelctor electrode of triode VT1, its negative pole ground connection.The triode The base stage of VT1 is connected with the base stage of triode VT2;The N poles of the voltage-regulator diode D2 and the negative input end of operational amplifier P It is connected.The P poles of the diode D3 are connected with the output end of operational amplifier P, and its N pole is connected with the positive pole of electric capacity C4 Connect.One input of the diode rectifier U is connected with the non-same polarity of the secondary inductance coil of transformer T, and its is another One input is connected with the Same Name of Ends of the secondary inductance coil of transformer T.The two of the primary side inductance coil of the transformer T End composition power input and external mains supply, the positive pole of the electric capacity C4 constitutes output end with negative pole and external electricity consumption is negative Carry.
It is of the present utility model relatively simple for structure, maintenance and inspection can be easy to, and can reduces cost.When using, transformer T can Mains supply is depressured, the power supply after step-down is processed by diode rectifier U then, in order to be born for electricity consumption Carry and suitable operating voltage is provided.When line voltage or load current change cause output voltage to fluctuate, can be by three poles The regulation circuit of pipe VT1, triode VT2, resistance R1~R3, diode D1 and electric capacity C2 composition is adjusted, so as to can protect Demonstrate,prove the stability of out-put supply.Meanwhile, voltage-regulator diode D2 can also play a part of voltage stabilizing to output voltage.It is of the present utility model Operational amplifier P and inductance L, resistance R5, resistance R6, electric capacity C3 and diode D3 can also constitute a filter circuit, can be right Out-put supply is filtered treatment, so as to further ensure that the stability of out-put supply.The utility model can also be as requested Output voltage, the difference of electric current, selection using different parameters electronic component so that circuit of the present utility model makes It is more extensive with face.
As described above, just can preferably realize the utility model.

Claims (6)

1. a kind of low-voltage power supply filter power supply circuit, it is characterised in that:Mainly by transformer T, diode rectifier U, computing is put Big device P, triode VT1, triode VT2, positive pole is connected with the positive output end of diode rectifier U, negative pole and diode are whole The electric capacity C1 that the negative output terminal of stream device U is connected, is serially connected in the resistance between the base stage of the positive pole of electric capacity C1 and triode VT1 R1, is serially connected in the resistance R2 between the emitter stage of the emitter stage of triode VT1 and triode VT2, is serially connected in the hair of triode VT1 Resistance R3, P pole between the colelctor electrode of emitter-base bandgap grading and triode VT2 is connected with the negative pole of electric capacity C1, N poles and triode VT1 Diode D1, the P pole that base stage is connected is connected with the emitter stage of triode VT1, N poles after resistance R4 with the negative pole of electric capacity C1 The voltage-regulator diode D2 being connected, positive pole is connected with the colelctor electrode of triode VT2, negative pole is connected with the negative pole of electric capacity C1 Electric capacity C2, positive pole is connected after resistance R5 with the negative input end of operational amplifier P, negative pole is connected with the negative pole of electric capacity C1 Electric capacity C3, is serially connected in the resistance R6 between the positive pole of the output end of operational amplifier P and electric capacity C3, is serially connected in operational amplifier P Positive input terminal and negative input end between inductance L, and output end of the positive pole with operational amplifier P after diode D3 be connected Connect, the electric capacity C4 that negative pole is connected with the negative pole of electric capacity C1 is constituted;The positive pole of the electric capacity C1 and the colelctor electrode phase of triode VT1 Connection, its negative pole ground connection;The base stage of the triode VT1 is connected with the base stage of triode VT2;The voltage-regulator diode D2's N poles are connected with the negative input end of operational amplifier P;The P poles of the diode D3 are connected with the output end of operational amplifier P Connect, its N pole is connected with the positive pole of electric capacity C4;One input of the diode rectifier U and the secondary inductance of transformer T The non-same polarity of coil is connected, its another input is connected with the Same Name of Ends of the secondary inductance coil of transformer T;It is described The two ends composition power input of the primary side inductance coil of transformer T, positive pole and the negative pole of the electric capacity C4 constitute output end.
2. a kind of low-voltage power supply filter power supply circuit according to claim 1, it is characterised in that:The triode VT1 with Triode VT2 is 3CG15 type triodes.
3. a kind of low-voltage power supply filter power supply circuit according to claim 1, it is characterised in that:The resistance of the resistance R1 It is 300 Ω, the resistance of the resistance R2~R4 is 260 Ω, and the resistance of the resistance R5 and resistance R6 is 250 Ω.
4. a kind of low-voltage power supply filter power supply circuit according to claim 1, it is characterised in that:The electric capacity C1 and electric capacity The capacitance of C2 is the capacitance of 100 μ F, the electric capacity C3 for the capacitance of 110 μ F, the electric capacity C4 is 120 μ F.
5. a kind of low-voltage power supply filter power supply circuit according to claim 1, it is characterised in that:The diode D1 and two Pole pipe D3 is 1N4007 type diodes, and the voltage-regulator diode D2 is 2CW110 type voltage-regulator diodes.
6. a kind of low-voltage power supply filter power supply circuit according to claim 1, it is characterised in that:The transformer T is EF20 step-down transformers;The diode rectifier U is for all-wave three-phase rectifier MT3510W, the operational amplifier P LM324 type operational amplifiers.
CN201621133278.7U 2016-10-18 2016-10-18 Low pressure supplies electrofiltration ripples power supply circuit Expired - Fee Related CN206195601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621133278.7U CN206195601U (en) 2016-10-18 2016-10-18 Low pressure supplies electrofiltration ripples power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621133278.7U CN206195601U (en) 2016-10-18 2016-10-18 Low pressure supplies electrofiltration ripples power supply circuit

Publications (1)

Publication Number Publication Date
CN206195601U true CN206195601U (en) 2017-05-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621133278.7U Expired - Fee Related CN206195601U (en) 2016-10-18 2016-10-18 Low pressure supplies electrofiltration ripples power supply circuit

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109237374A (en) * 2018-08-24 2019-01-18 北京云狐时代科技有限公司 A kind of lighting system for airport

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109237374A (en) * 2018-08-24 2019-01-18 北京云狐时代科技有限公司 A kind of lighting system for airport

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170524

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CF01 Termination of patent right due to non-payment of annual fee