CN107681907A - A kind of decompression rectification power circuit - Google Patents
A kind of decompression rectification power circuit Download PDFInfo
- Publication number
- CN107681907A CN107681907A CN201711020959.1A CN201711020959A CN107681907A CN 107681907 A CN107681907 A CN 107681907A CN 201711020959 A CN201711020959 A CN 201711020959A CN 107681907 A CN107681907 A CN 107681907A
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- CN
- China
- Prior art keywords
- triode
- electric capacity
- resistance
- pole
- positive pole
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- 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
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
Abstract
The invention discloses a kind of decompression rectification power circuit, it is characterised in that：Mainly it is made up of preposition constant-current source circuit, triode VT1, triode VT2, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance R4, diode D1, diode D2 and voltage-regulator diode D3.The present invention's is relatively simple for structure, can be easy to maintenance and inspection, and can reduce cost；Step-down rectifier processing can also be carried out to 220V civil power simultaneously, in order to provide suitable working power for small household electrical appliance, 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 decompression rectification power circuit.
Background technology
With the development of science and technology, electronic technology is able to fast development, and electronics categories are increasingly abundanter, various each
The electronic product of sample enters the family of common people so that daily life also be unable to do without electronic product.Use at present
Small household appliances using when need to carry out step-down rectifier processing to the 220V power supplys of domestic power mostly, and the decompression used at present is whole
Flow type power supply circuit is provided with transformer mostly so that power circuit is not only complicated but also cost is higher, therefore is unfavorable for
The application and popularizations of small household electrical appliance.
The content of the invention
It is an object of the invention to provide a kind of decompression rectification power circuit, to which the electricity of existing setting transformer can be simplified
The structure of source circuit, in order to maintenance and inspection and reduce cost.
The present invention is achieved through the following technical solutions：
A kind of decompression rectification power circuit, mainly by preposition constant-current source circuit, triode VT1, triode VT2, positive pole warp
Be connected after resistance R2 with triode VT1 colelctor electrode, electric capacity C1, P pole that negative pole is connected with triode VT1 emitter stage with
The diode D1 that triode VT1 emitter stage is connected, N poles are connected after resistance R1 with electric capacity C1 positive pole, positive pole and electricity
Appearance C1 positive pole is connected, electric capacity C2, the P pole that negative pole is connected with diode D1 N poles is connected with electric capacity C2 negative pole, N
The diode D2 that pole is connected with triode VT2 emitter stage, it is serially connected in triode VT1 colelctor electrode and triode VT2 base
Resistance R3 between pole, resistance R4, the P pole and three poles being serially connected between triode VT1 base stage and triode VT2 colelctor electrode
The voltage-regulator diode D3 that pipe VT1 emitter stage is connected, N poles are connected with triode VT2 emitter stage, and positive pole and voltage stabilizing
The electric capacity C3 compositions that diode D3 N poles are connected, negative pole is connected with triode VT1 emitter stage；The triode VT2's
Colelctor electrode is connected with triode VT1 emitter stage, and the positive pole of the electric capacity C3 forms the output of whole power circuit with negative pole
End；
The preposition constant-current source circuit is by operational amplifier P, triode VT3, positive pole after resistance R5 with operational amplifier P
Negative input be connected, the electric capacity C5 that negative pole is connected after resistance R9 with triode VT3 base stage, positive pole and electric capacity C5
Negative pole collectively constitute power input, the electric capacity C4 that negative pole is connected with electric capacity C5 positive pole, be serially connected in operational amplifier P's
Resistance R6 between electrode input end and output end, it is serially connected between operational amplifier P output end and electric capacity C1 positive pole
Resistance R7, is serially connected in operational amplifier P output end and resistance R8 that triode VT3 emitter stage is connected, and positive pole with
The electric capacity C6 compositions that triode VT3 emitter stage is connected, negative pole is connected with electric capacity C1 negative pole；The triode VT3's
Grounded collector.
Further, the triode VT1~VT3 is 3CG15 type triodes.
Further, the operational amplifier P is LM358 single supply general-purpose operation amplifiers.
Further, the diode D1 and diode D2 are 1N4007 type diodes, the voltage-regulator diode D3
For 2CW110 type voltage-regulator diodes.
The present invention compared with prior art, has advantages below and beneficial effect：
The present invention's is relatively simple for structure, can be easy to maintenance and inspection, and can reduce cost；Simultaneously can also be to 220V civil power
Step-down rectifier processing is carried out, in order to provide suitable working power for small household electrical appliance.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the overall structure diagram of the preposition 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, decompression rectification power circuit of the invention, mainly by preposition constant-current source circuit, triode VT1,
Triode VT2, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance R4, diode D1, diode D2
And voltage-regulator diode D3 compositions.Wherein, the resistance R1 is that 1M Ω, the resistance R2 and resistance R3 are 100K Ω, resistance
R4 is 120K Ω.Meanwhile the capacitance that the capacitance of the electric capacity C1 is 120 μ F, the electric capacity C2 is 0.68 μ F, the electric capacity C3's
Capacitance is 220 μ F.In order to ensure the practical effect of the present invention, during implementation, the triode VT1 and triode VT2 is adopted
Realized with 3CG15 types triode, the diode D1 and diode D2 is realized using 1N4007 types diode, described steady
Pressure diode D3 is then realized using 2CW110 types voltage-regulator diode.
During connection, the colelctor electrode of the positive pole of the electric capacity C1 with triode VT1 after resistance R2 is connected, its negative pole and three
Pole pipe VT1 emitter stage is connected.The P poles of the diode D1 are connected with triode VT1 emitter stage, and its N pole is through resistance
Positive pole after R1 with electric capacity C1 is connected.The positive pole of the electric capacity C2 is connected with electric capacity C1 positive pole, its negative pole and diode
D1 N poles are connected.The P poles of the diode D2 are connected with electric capacity C2 negative pole, its N pole and triode VT2 emitter stage
It is connected.The resistance R3 is serially connected between triode VT1 colelctor electrode and triode VT2 base stage, the resistance R4 concatenations
Between triode VT1 base stage and triode VT2 colelctor electrode, the P poles of the voltage-regulator diode D3 and triode VT1 hair
Emitter-base bandgap grading is connected, and its N pole is connected with triode VT2 emitter stage.The positive pole of the electric capacity C3 and voltage-regulator diode D3 N poles
It is connected, its negative pole is connected with triode VT1 emitter stage.Meanwhile the colelctor electrode of the triode VT2 and triode VT1
Emitter stage be connected.
As shown in Fig. 2 the preposition constant-current source circuit is by operational amplifier P, triode VT3, electric capacity C4, electric capacity C5, electricity
Hold C6, resistance R5, resistance R6, resistance R7, resistance R8 and resistance R9 composition.Wherein, the resistance R5 and resistance R7 and electricity
It is 150K Ω to hinder R9, and the resistance R6 is 100K Ω, and resistance R8 is 80K Ω.Meanwhile the capacitance of the electric capacity C4 is 47 μ F,
The capacitance that the capacitance of the electric capacity C5 is 200 μ F, the electric capacity C6 is 12 μ F.In order to ensure the present invention practical effect,
During implementation, the triode VT3 is also realized using 3CG15 types triode, and the operational amplifier P is then using the mono- electricity of LM358
Source general-purpose operation amplifier is realized.
During connection, the negative input of the positive pole of the electric capacity C5 with operational amplifier P after resistance R5 is connected, and it is negative
Base stage of the pole with triode VT3 after resistance R9 is connected.The positive pole of the electric capacity C4 collectively constitutes electricity with electric capacity C5 negative pole
Source input, its negative pole are connected with electric capacity C5 positive pole.The resistance R6 be serially connected in operational amplifier P electrode input end with
Between output end, the resistance R7 is serially connected between operational amplifier P output end and electric capacity C1 positive pole, the resistance R8 strings
The output end for being connected on operational amplifier P is connected with triode VT3 emitter stage.The positive pole of the electric capacity C6 and triode VT3
Emitter stage be connected, its negative pole is connected with electric capacity C1 negative pole；The grounded collector of the triode VT3.
The present invention need not use transformer, and its is relatively simple for structure, can be easy to maintenance and inspection, and can reduce cost；Together
When can also carry out step-down rectifier processing to 220V civil power, in order to provide suitable working power for small household electrical appliance.Use
When, the positive pole of the electric capacity C4 forms the input of whole power circuit and external 220V civil power, institute with electric capacity C5 negative pole
State electric capacity C3 positive pole and negative pole then forms the output end of whole power circuit and external uses electric loading.The preposition constant-current source electricity
Road can be handled the foreign current of input, so that it is guaranteed that the present invention possesses constant operating current, avoid it in work
During produce electromagnetic interference signal, greatly improve the present invention stability.Triode VT1, the triode of the present invention
VT2, electric capacity C2, diode D1 and diode D2 and resistance R1~R4 form the step-down rectifier main circuit of the present invention, for pair
220V civil powers carry out step-down rectifier processing, wherein, electric capacity C2 is decompression capacitor.The electric capacity C1 is then used as input filter capacitor,
Electric capacity C3 then plays the pressure stabilization function of output voltage as output filter capacitor, voltage-regulator diode D3.
As described above, it can preferably realize the present invention.
Claims (4)
- A kind of 1. decompression rectification power circuit, it is characterised in that：Mainly by preposition constant-current source circuit, triode VT1, triode VT2, the electricity that positive pole is connected after resistance R2 with triode VT1 colelctor electrode, negative pole is connected with triode VT1 emitter stage Hold C1, the diode that P poles are connected with triode VT1 emitter stage, N poles are connected after resistance R1 with electric capacity C1 positive pole D1, electric capacity C2, the P pole that positive pole is connected with electric capacity C1 positive pole, negative pole is connected with diode D1 N poles are negative with electric capacity C2's The diode D2 that pole is connected, N poles are connected with triode VT2 emitter stage, it is serially connected in triode VT1 colelctor electrode and three poles Resistance R3 between pipe VT2 base stage, the resistance R4 being serially connected between triode VT1 base stage and triode VT2 colelctor electrode, The voltage-regulator diode D3 that P poles are connected with triode VT1 emitter stage, N poles are connected with triode VT2 emitter stage, and The electric capacity C3 compositions that positive pole is connected with voltage-regulator diode D3 N poles, negative pole is connected with triode VT1 emitter stage；It is described Triode VT2 colelctor electrode is connected with triode VT1 emitter stage, and positive pole and the negative pole of the electric capacity C3 form whole power supply The output end of circuit；The preposition constant-current source circuit is negative with operational amplifier P after resistance R5 by operational amplifier P, triode VT3, positive pole The electric capacity C5 that pole input is connected, negative pole is connected after resistance R9 with triode VT3 base stage, positive pole are negative with electric capacity C5's The electric capacity C4 that pole collectively constitutes power input, negative pole is connected with electric capacity C5 positive pole, it is serially connected in operational amplifier P positive pole Resistance R6 between input and output end, the resistance being serially connected between operational amplifier P output end and electric capacity C1 positive pole R7, is serially connected in operational amplifier P output end and resistance R8 that triode VT3 emitter stage is connected, and positive pole and three poles The electric capacity C6 compositions that pipe VT3 emitter stage is connected, negative pole is connected with electric capacity C1 negative pole；The current collection of the triode VT3 Pole is grounded.
- A kind of 2. decompression rectification power circuit according to claim 1, it is characterised in that：Triode VT1~the VT3 is equal For 3CG15 type triodes.
- A kind of 3. decompression rectification power circuit according to claim 1, it is characterised in that：The operational amplifier P is LM358 single supply general-purpose operation amplifiers.
- A kind of 4. decompression rectification power circuit according to claim 1, it is characterised in that：The diode D1 and diode D2 is 1N4007 type diodes, and the voltage-regulator diode D3 is 2CW110 type voltage-regulator diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020959.1A CN107681907A (en) | 2017-10-27 | 2017-10-27 | A kind of decompression rectification power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020959.1A CN107681907A (en) | 2017-10-27 | 2017-10-27 | A kind of decompression rectification power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107681907A true CN107681907A (en) | 2018-02-09 |
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ID=61142525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711020959.1A Pending CN107681907A (en) | 2017-10-27 | 2017-10-27 | A kind of decompression rectification power circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN107681907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889064A (en) * | 2019-04-25 | 2019-06-14 | 宁波市镇海华泰电器有限公司 | Allow the pulsed high voltage generator of load short circuits |
-
2017
- 2017-10-27 CN CN201711020959.1A patent/CN107681907A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889064A (en) * | 2019-04-25 | 2019-06-14 | 宁波市镇海华泰电器有限公司 | Allow the pulsed high voltage generator of load short circuits |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180209 |
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| WD01 | Invention patent application deemed withdrawn after publication |