CN105305857A - Capacitive switch safe isolation program-controlled power supply circuit - Google Patents
Capacitive switch safe isolation program-controlled power supply circuit Download PDFInfo
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- CN105305857A CN105305857A CN201510743567.2A CN201510743567A CN105305857A CN 105305857 A CN105305857 A CN 105305857A CN 201510743567 A CN201510743567 A CN 201510743567A CN 105305857 A CN105305857 A CN 105305857A
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Abstract
The invention discloses a capacitive switch safe isolation program-controlled power supply circuit. The capacitive switch safe isolation program-controlled power supply circuit comprises a bridge type rectifying circuit, a single chip microcomputer, a capacitive program-controlled voltage-reduction circuit and a switch circuit; the bridge type rectifying circuit is composed of triodes Q1 and Q3 and diodes D2 and D3; the base electrodes of the triodes are connected with the single chip microcomputer; the capacitive program-controlled voltage-reduction circuit comprises capacitors C2, C3 and C4 and triodes Q4 and Q5 to form direct current stage-by-stage voltage reduction; the base electrodes of the triodes Q4 and Q5 are connected with the single chip microcomputer; the switch circuit comprises two groups of program-controlled synchronous switches; the first group switches are connected with the output end of the bridge type rectifying circuit, and the input ends of the capacitor C2 and the triode Q4; the second group of switches are connected with the output ends of the capacitor C2 and the triode Q4, and the input ends of the capacitor C3 and the triode Q5; and the two groups of the program-controlled synchronous switches are closed in different time. The capacitive switch safe isolation program-controlled power supply circuit adopts the capacitive program-controlled voltage-reduction circuit instead of a cumbersome power supply transformer, so that the factor power of the mains supply is improved and a large amount of electric energy is saved.
Description
Technical field
The present invention relates to power circuit technical field, more particularly, relate to a kind of capacitance-type switch Secure isolation programmable power supply circuit.
Background technology
Traditional power circuit all be unable to do without safety isolating transformer, while step-down, also can prevent late-class circuit electric shock risk.Transformer belongs to inductive reactive element.In society, all trades and professions use induction reactance electrical equipment all in a large number, such as: motor, injection molding machine, incubator, electric heater, electric heater, electromagnetic oven, electric kettle etc.A large amount of use induction reactance electrical equipment causes huge energy waste can to the mains supply of country, because inductive circuit can make the reactive power of civil power increase, power factor (PF) reduces.If go to compensate perception unnecessary in (neutralization) inductive circuit with capacitive circuit, definitely can increase the active power of civil power theoretically, reduce reactive power, thus improve the power factor (PF) of mains supply.But, also do not see that related documents is openly reported at present.
Summary of the invention
The technical problem to be solved in the present invention is: there is the problem reducing power factor (PF) for current safety isolating transformer, a kind of capacitance-type switch Secure isolation programmable power supply circuit is provided, eliminate safety isolating transformer, have employed capacitor and carry out step-down, bridge switching circuit carries out Secure isolation, to overcome the deficiencies in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: capacitance-type switch Secure isolation programmable power supply circuit, comprises bridge rectifier, single-chip microcomputer, and also comprise condenser type program controlled hypertension circuit, switching circuit, described bridge rectifier is by triode Q1, Q3 and diode D2, D3 forms, triode Q1, the base stage of Q3 connects single-chip microcomputer, and described condenser type program controlled hypertension circuit comprises electric capacity C2, C3, C4 and triode Q4, Q5, by electric capacity C2, C3, C4 forms direct current step pressure reducing, triode Q4, the base stage of Q5 connects described single-chip microcomputer, and described switching circuit comprises two groups of program control synchro switches, first group of program control synchro switch K1, K2 connects the output of described bridge rectifier, the input of electric capacity C2 and triode Q4, thus bridge rectifier and late-class circuit can be disconnected by first group of program control synchro switch, second group of program control synchro switch K3, K4 connects the output of electric capacity C2 and triode Q4, the input of electric capacity C3 and triode Q5 is closed when two groups of program control synchro switches are different.
Connect the first output voltage detecting circuit at the input of described first group of program control synchro switch, described output voltage detecting circuit is made up of resistance R7, R8, R9, and resistance R8 connects described single-chip microcomputer.
Also comprise stand-by power supply circuit, described stand-by power supply circuit is made up of triode Q2, electric capacity C1, and the base stage of triode Q2 connects described single-chip microcomputer.
Connect the second output voltage detecting circuit at the output of electric capacity C4, described second output voltage detecting circuit is made up of resistance R12, R13, R14, and resistance R13 connects described single-chip microcomputer simultaneously.
Also comprise the voltage detection circuit for time synchronism calibration, described voltage detection circuit is made up of diode D1, resistance R3, R4, R5.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention, according to the feature of capacitance energy storage, adopts bridge switch structure, realizes the object of output safety insulating power supply.Instead of traditional transformer step-down circuit with condenser type program controlled hypertension circuit, eliminate heavy power transformer, both provided cost savings, and turn improved the power factor (PF) of civil power, for country saves a large amount of electric energy, also for power circuit saves hardware space.
The present invention is by bridge switch structure, and applicating software programming technology just achieves the object of power safety isolation easily.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of capacitance-type switch Secure isolation programmable power supply circuit of the present invention.
Fig. 2 is the one-chip machine port structural representation of capacitance-type switch Secure isolation programmable power supply circuit of the present invention.
Fig. 3 is switching circuit embodiment one structural representation of the present invention.
Fig. 4 is switching circuit embodiment two structural representation of the present invention.
Fig. 5 is rectification circuit oscillogram of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
See Fig. 1-5, capacitance-type switch Secure isolation programmable power supply circuit of the present invention, comprise bridge rectifier 1, single-chip microcomputer, also comprise condenser type program controlled hypertension circuit, switching circuit 3, described bridge rectifier is by triode Q1, Q3 and diode D2, D3 forms, triode Q1, the base stage of Q3 connects single-chip microcomputer, described condenser type program controlled hypertension circuit comprises electric capacity C2, C3, C4 and triode Q4, Q5, by electric capacity C2, C3, C4 forms direct current step pressure reducing, triode Q4, the base stage of Q5 connects described single-chip microcomputer, described switching circuit comprises two groups of program control synchro switches, first group of program control synchro switch K1, K2 connects the output of described bridge rectifier, the input of electric capacity C2 and triode Q4, thus bridge rectifier and late-class circuit can be disconnected by first group of program control synchro switch, second group of program control synchro switch K3, K4 connects the output of electric capacity C2 and triode Q4, the input of electric capacity C3 and triode Q5, two groups of program control synchro switches are closed time different.Traditional bridge rectifier is constituted by a diode, and the present invention breaks the normal procedure, and forms bridge rectifier, controlled by Single Chip Microcomputer (SCM) program by triode and D2, D3.
Connect the first output voltage detecting circuit 2 at the input of described first group of program control synchro switch, described output voltage detecting circuit is made up of resistance R7, R8, R9, and resistance R8 connects described single-chip microcomputer.The present invention also comprises stand-by power supply circuit, and described stand-by power supply circuit is made up of triode Q2, electric capacity C1, and the base stage of triode Q2 connects described single-chip microcomputer.When the undertension that bridge rectifier 1 exports, stored program controlled starts stand-by power supply circuit, with the deficiency of supplementary bridge rectifier, voltage is exported more stable.
Connect the second output voltage detecting circuit 4 at the output of electric capacity C4, described second output voltage detecting circuit is made up of resistance R12, R13, R14, and resistance R13 connects described single-chip microcomputer simultaneously.The present invention also comprises the voltage detection circuit for time synchronism calibration, and described voltage detection circuit is made up of diode D1, resistance R3, R4, R5.
The present invention realizes the effect of grammed switch Secure isolation power supply by multiple functional circuits such as singlechip chip control program, the program control rectification circuit of high voltage transistor, capacitor step-down programme control circut, program control bridge switch Secure isolation circuit, low frequency voltage stabilizing programme control circut, PWM pulse-width modulation circuits.Triode Q1, Q3 and diode D2, D3 tetra-transistors form program control rectification circuit.The course of work of its program control rectification is as follows: Q1, Q3, D2 and the D3 full-wave bridge rectifier circuit with traditional in principle is identical, and difference is, Q1 and Q3 is controlled by Single Chip Microcomputer (SCM) program.And traditional bridge rectifier is four diodes forms open rectification, uncontrolled.
Electric capacity C2, C3, C4 and triode Q4, Q5 form condenser type direct-current voltage reducing circuit, low frequency voltage stabilizing programme control circut and PWM pulse-width modulation circuit.What K switch 1-K4 formed is bridge switch Secure isolation programme control circut.The course of work is described below: after rectifier circuit rectifies above, and circuit charges sporadically to electric capacity C2, and the voltage on C2 generally can design higher, such as: 100-300VDC.Concrete magnitude of voltage is determined by calculating according to the size of load.What electric capacity C2, C3 and triode Q4 formed is direct-current voltage reducing circuit, carries out step-down by PWM pulse length modulation principle.Its pulse duration is also controlled by B4, B5 by program.
The course of work of K1-K4 tetra-switches is: when K1 and K2 connects, K3 and K4 must close, and now, rectification circuit charges to electric capacity C2; When K1 and K2 closes, K3 and K4 can close, and also can close, and is generally be in closure state.Now, rectification circuit stops, to C2 charging, starting triode Q4 and Q5, being controlled the Kai Heguan of triode Q4 and Q5 by program by port B4 and B5, charges to respectively electric capacity C3 and C4 in the mode of PWM pulse-width modulation.Due to now, K1 and K2 closes, so AC power circuit is above completely isolated, so DC power supply circuit is below Secure isolation.K switch 1 and K2, K3 and K4 are the switches that two groups of functions are different, and two groups of switches can close at no time simultaneously.K1-K4 switch according to the needs of application scenario can selective light lotus root, optoelectronic switch or relay etc.If selective relay, the life-span of relay and the harmony problem of operating frequency be considered.Also all controlled by Single Chip Microcomputer (SCM) program see Fig. 3-4, K1-K4 tetra-switches, control by VK1-VK4 respectively.Four switches can adopt relay system control switch (see figure 3), also can adopt light lotus root switch (see figure 4).
As can be seen from Figure 5, Q1, Q3 two triodes are the needs according to design (calculated) load, are controlled conducting and the closedown of two triodes by program by port B1 and B3.Wherein, triode Q2 and electric capacity C1 forms stand-by power supply circuit, is also controlled by port B2 by program.Resistance R7, R8, R9 form output voltage detecting circuit, are also controlled by port RC2 by program, when rectification circuit power output is inadequate, lucky when power supply zero crossing or supply voltage U1 are less than UO again, then start stand-by power supply circuit by program.Output voltage can be avoided like this to fluctuate excessive situation.Diode D1, with resistance R3, R4, R5 form voltage detection circuit, play time synchronism calibration effect, avoid single-chip microcomputer out of hand because of time irreversibility.
Below openly specific embodiments of the invention are only; do not form limiting the scope of the invention; for general technical staff of the technical field of the invention; do not departing under general idea prerequisite of the present invention; according to technical solution of the present invention do without the need to through the change of creative work and replacement, all should drop within protection scope of the present invention.
Claims (5)
1. capacitance-type switch Secure isolation programmable power supply circuit, comprise bridge rectifier, single-chip microcomputer, it is characterized in that: also comprise condenser type program controlled hypertension circuit, switching circuit, described bridge rectifier is by triode Q1, Q3 and diode D2, D3 forms, triode Q1, the base stage of Q3 connects single-chip microcomputer, described condenser type program controlled hypertension circuit comprises electric capacity C2, C3, C4 and triode Q4, Q5, by electric capacity C2, C3, C4 forms direct current step pressure reducing, triode Q4, the base stage of Q5 connects described single-chip microcomputer, described switching circuit comprises two groups of program control synchro switches, first group of program control synchro switch K1, K2 connects the output of described bridge rectifier, the input of electric capacity C2 and triode Q4, thus bridge rectifier and late-class circuit can be disconnected by first group of program control synchro switch, second group of program control synchro switch K3, K4 connects the output of electric capacity C2 and triode Q4, the input of electric capacity C3 and triode Q5, two groups of program control synchro switches are closed time different.
2. capacitance-type switch Secure isolation programmable power supply circuit according to claim 1, it is characterized in that: connect the first output voltage detecting circuit at the input of described first group of program control synchro switch, described output voltage detecting circuit is made up of resistance R7, R8, R9, and resistance R8 connects described single-chip microcomputer.
3. capacitance-type switch Secure isolation programmable power supply circuit according to claim 2, it is characterized in that: also comprise stand-by power supply circuit, described stand-by power supply circuit is made up of triode Q2, electric capacity C1, and the base stage of triode Q2 connects described single-chip microcomputer.
4. capacitance-type switch Secure isolation programmable power supply circuit according to claim 1, it is characterized in that: connect the second output voltage detecting circuit at the output of electric capacity C4, described second output voltage detecting circuit is made up of resistance R12, R13, R14, and resistance R13 connects described single-chip microcomputer simultaneously.
5. capacitance-type switch Secure isolation programmable power supply circuit according to claim 1, it is characterized in that: also comprise the voltage detection circuit for time synchronism calibration, described voltage detection circuit is made up of diode D1, resistance R3, R4, R5.
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| CN201510743567.2A CN105305857B (en) | 2015-11-05 | 2015-11-05 | Capacitance-type switch security isolation programmable power supply circuit |
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| CN201510743567.2A CN105305857B (en) | 2015-11-05 | 2015-11-05 | Capacitance-type switch security isolation programmable power supply circuit |
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| CN105305857A true CN105305857A (en) | 2016-02-03 |
| CN105305857B CN105305857B (en) | 2018-07-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016386A (en) * | 2016-07-08 | 2016-10-12 | 张玉清 | Induction cooker with continuously-adjustable power |
| 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 |
| CN113300445A (en) * | 2021-05-13 | 2021-08-24 | 重庆大学 | Multi-source mixed energy collecting device |
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| US5345376A (en) * | 1993-02-19 | 1994-09-06 | Tescom Corporation | Switching power supply with electronic isolation |
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| 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
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016386A (en) * | 2016-07-08 | 2016-10-12 | 张玉清 | Induction cooker with continuously-adjustable power |
| 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 |
| CN113300445A (en) * | 2021-05-13 | 2021-08-24 | 重庆大学 | Multi-source mixed energy collecting device |
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| CN105305857B (en) | 2018-07-03 |
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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 |