CN203967985U - LC series connection self-oscillation voltage conversion circuit - Google Patents
LC series connection self-oscillation voltage conversion circuit Download PDFInfo
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- CN203967985U CN203967985U CN201420253125.0U CN201420253125U CN203967985U CN 203967985 U CN203967985 U CN 203967985U CN 201420253125 U CN201420253125 U CN 201420253125U CN 203967985 U CN203967985 U CN 203967985U
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Abstract
LC series connection self-oscillation voltage conversion circuit is DC/AC, DC/DC voltage transformation technology, by power-supplying circuit, is connected respectively with self-maintained circuit, voltage comparator circuit, LC reactive power consumption circuit, impulse output circuit; Voltage comparator circuit is connected with self-maintained circuit, LC reactive power consumption circuit, isolation feedback circuit respectively; Self-maintained circuit is connected with impulse output circuit; Impulse output circuit is connected by electromagnetic induction with LC reactive power consumption circuit; LC reactive power consumption circuit is connected by electromagnetic induction with coupling output circuit: coupling output circuit is connected with isolation feedback circuit.With an electronic switching device, open moment and turn-offed immediately electronic switching device after high frequency transformer T2 primary coil B bis-ends produce induced electromotive force, electronic switching device service time only has 1/10th left and right in an output cycle, reduce power consumption, thereby realize energy-conservation.Simultaneously at a sine wave of high frequency transformer T1 secondary coil two end outputs.The utility model can be used for Switching Power Supply, inverter.
Description
Technical field:
The present invention relates to a kind of translation circuit, relate in particular to a kind of LC series connection self-oscillation DC/AC, DC/DC voltage conversion circuit, for Switching Power Supply, inverter.
Background technology:
Switching Power Supply mainly belongs to electronic power supply, can be subdivided into several main classification such as communication power supply, electric supply, PC power source:
Switching Power Supply is at the field application such as electronics, communication, electric, the energy, Aero-Space, military affairs and household electrical appliances a kind of power electronic equipment very widely.It has that energy conversion efficiency is high, volume is little, lightweight, control precision is high and the advantage such as rapidity is good, Switching Power Supply is that input directly becomes AC rectification into direct current, under the effect of high frequency oscillation circuit, by the break-make of switch controlled electric current, form high-frequency pulse current.Under the help of inductance (high frequency transformer), the galvanic current that output user needs is pressed or alternating voltage.
As its name suggests, Switching Power Supply is utilized electronic switching device (as transistor, field effect transistor, controllable silicon thyratron etc.) exactly, pass through control circuit, make electronic switching device ceaselessly " connection " and " shutoff ", allow electronic switching device carry out pulse modulation to input voltage, thereby realize DC/AC, DC/DC voltage transformation, and output voltage can be in harmonious proportion automatic voltage regulation.
Electronic switching device is in ceaselessly " connection " and " shutoff ", the namely switching back and forth of the saturation conduction of switching device and two kinds of states of cut-off. during electronic switching device saturation conduction, there is a large amount of electric energy loss of saturation voltage drop on it.
Can realize DC/AC, DC/DC voltage transformation, and output voltage can be in harmonious proportion automatic voltage regulation.Not allowing again a large amount of losses of electric energy of input circuit on electronic switching device, thereby improve power supply service efficiency, realize energy-saving and emission-reduction, is the difficult problem that current urgent need will solve.
Summary of the invention:
A kind of LC series connection self-maintained circuit DC/AC, DC/DC voltage transformation technology have effectively solved an energy consumption difficult problem for electronic switching device.It is the series characteristic of utilizing LC, by peripheral circuit, auxiliary induction in high frequency transformer is carried out to reversal, with inductance, the inactivity of capacitor charge and discharge is consumed to attribute and complete in input circuit the current flowing of primary inductance in high frequency transformer, become and complete DC/AC, DC/DC voltage transformation by high frequency transformer, reaching output object.
The present invention is achieved in that
LC series connection self-maintained circuit DC/AC, DC/DC voltage transformation technology are realized by these a few part functions:
Power-supplying circuit, voltage comparator circuit, self-maintained circuit, impulse output circuit, LC reactive power consumption circuit, isolation feedback circuit, coupling output circuit.Wherein power-supplying circuit is connected with self-maintained circuit, voltage comparator circuit, LC reactive power consumption circuit, impulse output circuit respectively; Voltage comparator circuit is connected with self-maintained circuit, LC reactive power consumption circuit, isolation feedback circuit respectively; Self-maintained circuit is connected with impulse output circuit; Impulse output circuit is connected by electromagnetic induction with LC reactive power consumption circuit; LC reactive power consumption circuit is connected by electromagnetic induction with coupling output circuit: coupling output circuit is connected with isolation feedback circuit;
LC reactive power consumption circuit is connected with high frequency transformer T2 primary coil head end by high frequency transformer T1 primary coil end, high frequency transformer T1 primary coil head end is connected with power supply, capacitor C 1 one end, after capacitor C 1 and resistance R 1 series connection, be connected in parallel on high frequency transformer T1 primary coil two ends, after diode D1 and capacitor C 2 are in parallel, one end is connected on high frequency transformer T2 primary coil A end, diode D1 and capacitor C 2 other end ground connection; After capacitor C 3 and resistance R 2 series connection, be connected in parallel on high frequency transformer T2 primary coil B bis-ends, high frequency transformer T2 primary coil B end is connected with resistance R 2, field effect transistor Q1 drain electrode respectively, field effect transistor Q1 grid is connected with self-maintained circuit, field effect transistor Q1 source ground, high frequency transformer T2 primary coil B head end connects respectively the secondary commutation circuit anode output of capacitor C 3 one end, power supply, high frequency transformer T2, and secondary two ends of high frequency transformer T2 connect respectively rectifier diode.
Compared to the prior art, prior art Switching Power Supply can only realize half-wave voltage output with an electronic switching device in the present invention, and the current time length of output was directly proportional to the service time of electronic switching device; With a switching tube, cannot realize sinewave output.Advantage of the present invention is: with an electronic switching device, open moment at high frequency transformer T2 primary coil B bis-ends generation induced electromotive forces, after producing induced electromotive force, turn-off immediately electronic switching device, the time that electronic switching device is opened only has 1/10th left and right in an output cycle, reduce power consumption, thereby realize energy-conservation.When electronic switching device turn-offs, induced electromotive force two end polarity are exchanged, and high frequency transformer T2 primary coil A bis-end polarity are changed, and capacitor C 2 is discharged to power supply by high frequency transformer T2 primary coil A, high frequency transformer T1 primary coil; When in capacitor C 2, voltage is lower than the admittance voltage of diode D1, C2 electric discharge stops, and at this moment high frequency transformer T1 primary coil and high frequency transformer T2 primary coil A polarity change, and becomes capacitor C 2 chargings; So just at a sine wave of high frequency transformer T1 secondary coil two end outputs.The present invention can be for Switching Power Supply, inverter.
Accompanying drawing explanation:
Fig. 1: square frame connection diagram of the present invention.
Fig. 2: reactive power consumption circuit diagram of the present invention.
Embodiment:
As shown in Figure 1, above connected mode, describe, power supply from DC12V to AC380V by market purchasing; Self-maintained circuit, voltage comparator circuit, impulse output circuit are comprised of IC chip LM311 and peripheral circuit; Coupling output circuit is comprised of high frequency transformer and peripheral circuit; Isolation feedback circuit is comprised of optocoupler PC817 and peripheral circuit;
As shown in Figure 2, high frequency transformer T1 and high frequency transformer T2 are by market purchasing, capacitor C 1, C2, C3 capacity at 47 pico farads between 100 microfarads, resistance R 1, R2 resistance in 1 Europe between 1000 Europe, diode D1, D2, D3, D4, D5 model are selected high frequency high-voltage diode, and field effect transistor is selected high frequency, middle power band damper diode.
Claims (2)
1. a LC series connection self-oscillation voltage conversion circuit is comprised of power-supplying circuit, voltage comparator circuit, self-maintained circuit, impulse output circuit, LC reactive power consumption circuit, isolation feedback circuit, coupling output circuit; It is characterized in that: power-supplying circuit is connected with self-maintained circuit, voltage comparator circuit, LC reactive power consumption circuit, impulse output circuit respectively; Voltage comparator circuit is connected with self-maintained circuit, LC reactive power consumption circuit, isolation feedback circuit respectively; Self-maintained circuit is connected with impulse output circuit; Impulse output circuit is connected by electromagnetic induction with LC reactive power consumption circuit; LC reactive power consumption circuit is connected by electromagnetic induction with coupling output circuit: coupling output circuit is connected with isolation feedback circuit.
2. translation circuit according to claim 1, it is characterized in that: described LC reactive power consumption circuit is connected with high frequency transformer T2 primary coil head end by high frequency transformer T1 primary coil end, high frequency transformer T1 primary coil head end is connected with power supply, capacitor C 1 one end, after capacitor C 1 and resistance R 1 series connection, be connected in parallel on high frequency transformer T1 primary coil two ends, after diode D1 and capacitor C 2 are in parallel, one end is connected on high frequency transformer T2 primary coil A end, diode D1 and capacitor C 2 other end ground connection; After capacitor C 3 and resistance R 2 series connection, be connected in parallel on high frequency transformer T2 primary coil B bis-ends, high frequency transformer T2 primary coil B end is connected with resistance R 2, field effect transistor Q1 drain electrode respectively, field effect transistor Q1 grid is connected with self-maintained circuit, field effect transistor Q1 source ground, high frequency transformer T2 primary coil B head end connects respectively the secondary commutation circuit anode output of capacitor C 3 one end, power supply, high frequency transformer T2, and secondary two ends of high frequency transformer T2 connect respectively rectifier diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253125.0U CN203967985U (en) | 2014-05-19 | 2014-05-19 | LC series connection self-oscillation voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253125.0U CN203967985U (en) | 2014-05-19 | 2014-05-19 | LC series connection self-oscillation voltage conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203967985U true CN203967985U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420253125.0U Expired - Fee Related CN203967985U (en) | 2014-05-19 | 2014-05-19 | LC series connection self-oscillation voltage conversion circuit |
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| Country | Link |
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| CN (1) | CN203967985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986337A (en) * | 2014-05-19 | 2014-08-13 | 敖大旺 | LC series-connection self-oscillation voltage conversion circuit |
| CN117118244A (en) * | 2023-10-23 | 2023-11-24 | 国仪量子(合肥)技术有限公司 | High-voltage power supply device |
-
2014
- 2014-05-19 CN CN201420253125.0U patent/CN203967985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986337A (en) * | 2014-05-19 | 2014-08-13 | 敖大旺 | LC series-connection self-oscillation voltage conversion circuit |
| CN117118244A (en) * | 2023-10-23 | 2023-11-24 | 国仪量子(合肥)技术有限公司 | High-voltage power supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160519 |