CN105305857B - Capacitance-type switch security isolation programmable power supply circuit - Google Patents
Capacitance-type switch security isolation programmable power supply circuit Download PDFInfo
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- CN105305857B CN105305857B CN201510743567.2A CN201510743567A CN105305857B CN 105305857 B CN105305857 B CN 105305857B CN 201510743567 A CN201510743567 A CN 201510743567A CN 105305857 B CN105305857 B CN 105305857B
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Abstract
The present invention discloses a kind of capacitance-type switch security isolation programmable power supply circuit, including bridge rectifier, microcontroller, condenser type program controlled hypertension circuit, switching circuit, bridge rectifier is by triode Q1, Q3 and diode D2, D3 is formed, the base stage connection microcontroller of triode, condenser type program controlled hypertension circuit includes capacitance C2, C3, C4 and triode Q4, Q5, form direct current step pressure reducing, triode Q4, the base stage connection microcontroller of Q5, switching circuit includes two groups of program-controlled synchro switches, the output terminal of first group of switch connection bridge rectifier, the input terminal of capacitance C2 and triode Q4, the output terminal of second group of switch connection capacitance C2 and triode Q4, the input terminal of capacitance C3 and triode Q5, two groups of program-controlled synchro switches are not closed at.The present invention, instead of bulky power transformer, is improved the power factor (PF) of alternating current, saves a large amount of electric energy with condenser type program controlled hypertension circuit.
Description
Technical field
The present invention relates to power circuit technical fields, are to be related to a kind of capacitance-type switch security isolation journey more specifically
Control power circuit.
Background technology
Traditional power circuit all be unable to do without safety isolating transformer, can simultaneously prevent late-class circuit from getting an electric shock while decompression
Risk.Transformer category inductive reactive element.All trades and professions all largely use induction reactance electric appliance in society, such as：Motor, injection molding machine, heat preservation
Case, electric heater, electric heater, electromagnetic oven, electric kettle etc..Largely the mains supply of country can be given to cause using induction reactance electric appliance huge
Big energy waste, because inductive circuit can increase the reactive power of alternating current, power factor (PF) reduces.If it is gone with capacitive circuit
Compensation（It neutralizes）Extra perception in inductive circuit theoretically can absolutely increase the active power of alternating current, reduce idle work(
Rate, so as to improve the power factor (PF) of mains supply.However, there is presently no see that related document discloses report.
Invention content
The technical problem to be solved by the present invention is to：Existing for current safety isolating transformer reduces asking for power factor (PF)
Topic, a kind of capacitance-type switch security isolation programmable power supply circuit is provided, eliminates safety isolating transformer, employ capacitor into
Row decompression, bridge switching circuit carries out security isolation, with overcome the deficiencies in the prior art.
The technical solution adopted by the present invention to solve the technical problems is：Capacitance-type switch security isolation programmable power supply electricity
Road, including bridge rectifier, microcontroller further includes condenser type program controlled hypertension circuit, switching circuit, the bridge rectifier
It is made of triode Q1, Q3 and diode D2, D3, the base stage connection microcontroller of triode Q1, Q3, the condenser type program controlled hypertension
Circuit includes capacitance C2, C3, C4 and triode Q4, Q5, and direct current step pressure reducing, triode Q4, Q5 are formed by capacitance C2, C3, C4
Base stage connect the microcontroller, the switching circuit includes two groups of program-controlled synchro switches, first group of program-controlled synchro switch K1, K2
The output terminal of the bridge rectifier, the input terminal of capacitance C2 and triode Q4 are connected, so as to make bridge rectifier with after
Grade circuit can be disconnected by first group of program-controlled synchro switch, second group of program-controlled synchro switch K3, K4 connection capacitance C2 and triode Q4
Output terminal, capacitance C3 and triode Q5 input terminal, two groups of program-controlled synchro switches are not closed at.
The first output voltage detecting circuit, the output voltage are connected in the input terminal of first group of program-controlled synchro switch
Detection circuit is made of resistance R7, R8, R9, the resistance R8 connections microcontroller.
Stand-by power supply circuit is further included, the stand-by power supply circuit is made of triode Q2, capacitance C1, the base of triode Q2
Pole connects the microcontroller.
The second output voltage detecting circuit is connected in the output terminal of capacitance C4, second output voltage detecting circuit is by electricity
R12, R13, R14 composition are hindered, resistance R13 connects the microcontroller simultaneously.
The voltage detection circuit for time synchronism calibration is further included, the voltage detection circuit is by diode
D1, resistance R3, R4, R5 composition.
Compared with prior art, the beneficial effects of the invention are as follows：
The characteristics of present invention is according to capacitive energy storage using bridge switch structure, realizes the purpose of output safety isolated power supply.
With condenser type program controlled hypertension circuit instead of traditional transformer step-down circuit, bulky power transformer is eliminated, was both saved
Cost, and improve the power factor (PF) of alternating current, a large amount of electric energy is saved for country, also saves hardware sky for power circuit
Between.
For the present invention by bridge switch structure, applicating software programming technology is achieved that the mesh of power safety isolation easily
's.
Description of the drawings
Fig. 1 is the circuit diagram of capacitance-type switch security isolation programmable power supply circuit of the present invention.
Fig. 2 is the one-chip machine port structure diagram of capacitance-type switch security isolation programmable power supply circuit of the present invention.
Fig. 3 is one structure diagram of switching circuit embodiment of the present invention.
Fig. 4 is two structure diagram of switching circuit embodiment of the present invention.
Fig. 5 is rectification circuit oscillogram of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
Referring to Fig. 1-5, capacitance-type switch security isolation programmable power supply circuit of the invention is single including bridge rectifier 1
Piece machine further includes condenser type program controlled hypertension circuit, and switching circuit 3, the bridge rectifier is by triode Q1, Q3 and diode
D2, D3 are formed, and the base stage connection microcontroller of triode Q1, Q3, the condenser type program controlled hypertension circuit include capacitance C2, C3, C4
With triode Q4, Q5, direct current step pressure reducing is formed by capacitance C2, C3, C4, the base stage of triode Q4, Q5 connect the microcontroller,
The switching circuit includes two groups of program-controlled synchro switches, and first group of program-controlled synchro switch K1, K2 connect the bridge rectifier
Output terminal, capacitance C2 and triode Q4 input terminal, so as to make bridge rectifier can be program-controlled by first group with late-class circuit
Synchro switch disconnects, output terminal, capacitance C3 and three poles of second group of program-controlled synchro switch K3, K4 connection capacitance C2 and triode Q4
The input terminal of pipe Q5, two groups of program-controlled synchro switches are not closed at.Traditional bridge rectifier is constituted by a diode, this
Invention is broken the normal procedure, and is formed bridge rectifier by triode and D2, D3, is controlled by SCM program.
The first output voltage detecting circuit 2, the output electricity are connected in the input terminal of first group of program-controlled synchro switch
Pressure detection circuit is made of resistance R7, R8, R9, the resistance R8 connections microcontroller.The invention also includes stand-by power supply circuit, institutes
It states stand-by power supply circuit to be made of triode Q2, capacitance C1, the base stage of triode Q2 connects the microcontroller.When bridge rectifier electricity
During the undertension that road 1 exports, stored program controlled starts stand-by power supply circuit, to supplement the deficiency of bridge rectifier, makes voltage
Output is more stablized.
Capacitance C4 output terminal connect the second output voltage detecting circuit 4, second output voltage detecting circuit by
Resistance R12, R13, R14 are formed, and resistance R13 connects the microcontroller simultaneously.The invention also includes for time synchronism calibration
Voltage detection circuit, the voltage detection circuit are made of diode D1, resistance R3, R4, R5.
The present invention controls program, the program-controlled rectification circuit of high voltage transistor, capacitor step-down program-controlled electric by singlechip chip
Multiple functional circuits such as road, program-controlled bridge switch security isolation circuit, low frequency voltage stabilizing programme control circut, PWM pulse-width modulation circuits come
Realize the effect of program controlled switch security isolation power supply.Triode Q1, Q3 and tetra- transistors of diode D2, D3 form program-controlled rectification
Circuit.The course of work of its program-controlled rectification is as follows：Q1, Q3, D2 and D3 in principle with traditional full-wave bridge rectifier circuit phase
Together, the difference is that Q1 and Q3 are controlled by SCM program.And traditional bridge rectifier is four diode compositions
Open rectification is uncontrolled.
Capacitance C2, C3, C4 and triode Q4, Q5 composition condenser type direct-current voltage reducing circuit, low frequency voltage stabilizing programme control circut and PWM
Pulse-width modulation circuit.Switch K1-K4 compositions is bridge switch security isolation programme control circut.The course of work is described as follows：By
After the rectifier circuit rectifies of front, circuit sporadically charges to capacitance C2, the voltage on C2 can generally design it is higher, than
Such as：100-300VDC.Specific voltage value is determined according to the size of load by calculating.Capacitance C2, C3 and triode Q4 compositions
Be direct-current voltage reducing circuit, be depressured by PWM pulse length modulation principles.Its pulse width is also to be carried out by program by B4, B5
Control.
The courses of work of the switch of K1-K4 tetra- are：When K1 is connected with K2, K3 and K4 must shut off, at this point, rectification circuit
It charges to capacitance C2；When K1 and K2 is closed, K3 and K4 can be closed, and can also be closed, are typically at closed state.At this point,
Rectification circuit stops charging to C2, starts triode Q4 and Q5, and triode Q4 and Q5 are controlled by port B4 and B5 by program
On and off is charged in a manner of PWM pulsewidth modulations to capacitance C3 and C4 respectively.Due at this point, K1 and K2 are to close, before institute
The AC power circuit in face is completely isolated, so DC power supply circuit below is security isolation.Switch K1 and K2, K3 and
K4 is the different switch of two groups of functions, and two groups of switches can be closed at no time.K1-K4 is switched according to application scenario
Needs can select optocoupler, optoelectronic switch or relay etc..Service life and the work of relay are considered if selective relay
The harmony problem of working frequency.Referring to Fig. 3-4, tetra- switches of K1-K4 are controlled by SCM program, respectively by VK1-
VK4 is controlled.Relay system control switch can be used in four switches（See Fig. 3）, optocoupler switch can also be used（See Fig. 4）.
From fig. 5, it can be seen that two triodes of Q1, Q3 are the needs according to design (calculated) load, by program by port B1 and
B3 controls being turned on and off for two triodes.Wherein, triode Q2 and capacitance C1 forms stand-by power supply circuit and by journey
What sequence was controlled by port B2.Resistance R7, R8, R9 form output voltage detecting circuit and are controlled by program by port RC2
System, when rectification circuit output power is inadequate, and then pass through when power supply zero crossing or supply voltage U1 are less than UO just
Program starts stand-by power supply circuit.Output voltage can be avoided to fluctuate excessive situation in this way.Diode D1 and resistance R3, R4, R5
Voltage detection circuit is formed, plays the role of time synchronism calibration, avoids microcontroller out of hand due to time irreversibility.
Above disclosure is only specific embodiments of the present invention, does not form limiting the scope of the invention, for this
For the those of ordinary skill of technical field that the present invention belongs to, under the premise of the general idea for not departing from the present invention, according to the present invention
What technical solution was made needs not move through the variations and alternatives of creative work, should all fall within the scope and spirit of the invention.
Claims (1)
1. capacitance-type switch security isolation programmable power supply circuit, including bridge rectifier, microcontroller, it is characterised in that：Also wrap
Condenser type program controlled hypertension circuit, switching circuit are included, the bridge rectifier is made of triode Q1, Q3 and diode D2, D3,
Q1 collectors connect power input with D2 cathodes, and Q3 collectors connect another input terminal of power supply, the transmitting of Q1 and Q3 with D3 cathodes
Pole connects the output cathode of rectification circuit, D2 and D3 anodes connect the common of way circuit, and the base stage of triode Q1, Q3 are contacted respectively
Microcontroller is connected after one current-limiting resistance R1, R6, the condenser type program controlled hypertension circuit includes capacitance C2, C3, C4 and triode
Q4, Q5 form direct current step pressure reducing by capacitance C2, C3, C4, and the base stage of triode Q4, Q5 connect the microcontroller, the switch
Circuit includes two groups of program-controlled synchro switches, and first group of program-controlled synchro switch K1, K2 input terminal connects the bridge rectifier electricity respectively
Output head anode and cathode, the K1 on road are connected, and the anode of C2 is connected with the emitter of triode Q4 with the anode of capacitance C2
It connects, K2 is connected on the common of way circuit and is connected with the cathode of C2, so as to make bridge rectifier and late-class circuit can
It is switched on or switched off by first group of program-controlled synchro switch；Second group of program-controlled synchro switch K3 is connected between triode Q4 and Q5 and divides
It is not connected with the emitter and capacitance C3 anodes of the collector of triode Q4 and triode Q5；K4 is connected on power supply publicly
End connects the cathode of capacitance C3 and the output terminal of K2 respectively；Two groups of program-controlled synchro switches are not closed at；It is program-controlled same at first group
The input terminal of step switch connects the first output voltage detecting circuit, and first output voltage detecting circuit is by resistance R7, R8, R9
Composition, resistance R7 and resistance R9 series winding partial pressures, resistance R7 mono- terminate the anode of rectification circuit output end, and resistance R9 mono- terminates public
Ground terminal, to obtain voltage signal, resistance R8 is current-limiting resistance, and resistance R8 one end connects the public connecting end of R7, R9, and the other end connects
Connect the microcontroller；Stand-by power supply circuit is further included, the stand-by power supply circuit is made of triode Q2, capacitance C1, the hair of Q2
Emitter-base bandgap grading connects bridge rectifier output cathode, and Q2 collectors connect the anode of C1, the cathode connection common of C1, the base of Q2
Pole passes through the resistance R2 connections microcontroller；Capacitance C4 output terminal connect the second output voltage detecting circuit, described second
Output voltage detecting circuit is made of resistance R12, R13, R14, resistance R12 and R14 series winding partial pressure, mono- termination powers of resistance R12
The anode of circuit output end, resistance R14 mono- terminate common, and to obtain voltage signal, resistance R13 is current-limiting resistance, resistance
R13 one end connects the public connecting end of R12, R14, and the other end connects the microcontroller；It further includes for time synchronism calibration
Voltage detection circuit, the voltage detection circuit are made of diode D1, resistance R3, R4, R5, diode D1 anodes
Power supply is connect, cathode connects capacitance C1 anodes, to charge to C1, ensures the supply of stand-by power supply；Resistance R4 and R5 series connection partial pressure, electricity
Resistance R3 is current-limiting resistance, and resistance R3 one end connects the public connecting end of R4, R5, and the other end connects the microcontroller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510743567.2A CN105305857B (en) | 2015-11-05 | 2015-11-05 | Capacitance-type switch security isolation programmable power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743567.2A CN105305857B (en) | 2015-11-05 | 2015-11-05 | Capacitance-type switch security isolation programmable power supply circuit |
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| CN105305857A CN105305857A (en) | 2016-02-03 |
| CN105305857B true CN105305857B (en) | 2018-07-03 |
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| CN201510743567.2A Active CN105305857B (en) | 2015-11-05 | 2015-11-05 | Capacitance-type switch security isolation programmable power supply circuit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106016386B (en) * | 2016-07-08 | 2019-03-12 | 张玉清 | A kind of electromagnetic oven that power is continuously adjustable |
| CN106151070A (en) * | 2016-08-31 | 2016-11-23 | 顺德职业技术学院 | Mini-fan |
| CN106208696A (en) * | 2016-08-31 | 2016-12-07 | 顺德职业技术学院 | The program control DC voltage booster circuit of Waterwheel-type |
| CN113300445B (en) * | 2021-05-13 | 2023-07-25 | 重庆大学 | Multisource hybrid energy collection device |
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|---|---|---|---|---|
| US5345376A (en) * | 1993-02-19 | 1994-09-06 | Tescom Corporation | Switching power supply with electronic isolation |
| CN1901341A (en) * | 2005-07-21 | 2007-01-24 | 陈真 | Alternative switch type power isolation circuit |
| CN101202513A (en) * | 2007-10-31 | 2008-06-18 | 葛铮 | On-line separate AC/DC power supply with PFC circuit |
| CN101685973A (en) * | 2008-09-26 | 2010-03-31 | 力博特公司 | Uninterrupted power supply |
| CN102510224A (en) * | 2011-11-23 | 2012-06-20 | 广州金升阳科技有限公司 | Power supply circuit |
| CN205070833U (en) * | 2015-11-05 | 2016-03-02 | 顺德职业技术学院 | Capacitanc switch security isolation programmable power supply circuit |
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2015
- 2015-11-05 CN CN201510743567.2A patent/CN105305857B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345376A (en) * | 1993-02-19 | 1994-09-06 | Tescom Corporation | Switching power supply with electronic isolation |
| CN1901341A (en) * | 2005-07-21 | 2007-01-24 | 陈真 | Alternative switch type power isolation circuit |
| CN101202513A (en) * | 2007-10-31 | 2008-06-18 | 葛铮 | On-line separate AC/DC power supply with PFC circuit |
| CN101685973A (en) * | 2008-09-26 | 2010-03-31 | 力博特公司 | Uninterrupted power supply |
| CN102510224A (en) * | 2011-11-23 | 2012-06-20 | 广州金升阳科技有限公司 | Power supply circuit |
| CN205070833U (en) * | 2015-11-05 | 2016-03-02 | 顺德职业技术学院 | Capacitanc switch security isolation programmable power supply circuit |
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| CN105305857A (en) | 2016-02-03 |
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Effective date of registration: 20201208 Address after: Building 2, No. 3, Fuqian Road, Hailing District, Taizhou City, Jiangsu Province Patentee after: Taizhou Haitong Asset Management Co., Ltd Address before: Shunde District of Guangdong city of Foshan province Desheng road 528399 No. 93 Patentee before: Shunde Polytechnic |