CN102780415A - Power-adjustable four-hundred watt inverter - Google Patents
Power-adjustable four-hundred watt inverter Download PDFInfo
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- CN102780415A CN102780415A CN2012102966987A CN201210296698A CN102780415A CN 102780415 A CN102780415 A CN 102780415A CN 2012102966987 A CN2012102966987 A CN 2012102966987A CN 201210296698 A CN201210296698 A CN 201210296698A CN 102780415 A CN102780415 A CN 102780415A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a power-adjustable four-hundred watt inverter which comprises a 12 V direct-current power source, a multivibrator circuit, a pulse width modulation circuit, a voltage comparing circuit, a push-pull power amplifying circuit, a booster circuit and an output rectangular voltage shaping circuit and is characterized in that the model number of a pulse width modulating oscillating circuit selected in the multivibrator circuit is SG3524. The inverter is fabricated through an inversion technology with a storage battery as a power source, which is feasible for temporary interruption of a power supply line. The power-adjustable four-hundred watt inverter is simple in circuit structure, few in peripheral elements, high in conversion efficiency and low in temperature rise in a rated power range; the output power of the power-adjustable four-hundred watt inverter reaches up to 400 W; and the output power of the inverter can be adjusted by modulating the pulse width through an external potentiometer. Furthermore, the power-adjustable four-hundred watt inverter is suitable for the electrical appliances such as universal lighting equipment, computers, electronic instruments and the like, and capable of serving as either an emergency power source for short-term power failure of the power supply line or an emergency lighting or fire-fighting emergency power source for various public places.
Description
Technical field
The invention belongs to electronic technology and emergency power supply technical field, is about a kind of adjustable power four hectowatt inverters.
Background technology
Power supply is more and more important to people's production, life, particularly to power supply in evening interruption in a single day, bring very burden will for people's operate as normal, living and studying.Direct-flow inverter is a kind of stand-by power supply that is independent of outside the utility grid, and with the inverter that storage battery is made as the application of power inversion transformation technique, reply supply line temporary interruption is more feasible.
The characteristics of circuit of the present invention: circuit structure is simple, peripheral cell is few, conversion efficiency is high, little, the power output of temperature rise reaches 400W in the rated power scope, through the power output of the adjustable inversion device of external potentiometer modulation pulsewidth.
Adjustable power four hectowatt inverters of the present invention are suitable for electrical appliances such as general-purpose lighting apparatus, computer, electronic instrument, can be used as the emergency power supply of supply line's short time when having a power failure, and also are applicable to the emergency lighting or the fire-fighting emergency power supply of various public places; Select two groups of 12V, the power supply of 20AH maintenance free cell for use, this inverter fully loaded operating time is about 1 hour.
Below specify adjustable power four hectowatt inverters of the present invention related relevant technologies content in implementation process.
Summary of the invention
Goal of the invention and beneficial effect: direct-flow inverter is a kind of stand-by power supply that is independent of outside the utility grid, and with the inverter that storage battery is made as the application of power inversion transformation technique, reply supply line temporary interruption is more feasible.The characteristics of circuit of the present invention: circuit structure is simple, peripheral cell is few, conversion efficiency is high, little, the power output of temperature rise reaches 400W in the rated power scope, through the power output of the adjustable inversion device of external potentiometer modulation pulsewidth.
Adjustable power four hectowatt inverters of the present invention are suitable for electrical appliances such as general-purpose lighting apparatus, computer, electronic instrument, and reply supply line temporary interruption is more feasible, also are applicable to the emergency lighting or the fire-fighting emergency power supply of various public places.
The circuit working principle: adjustable power four hectowatt inverters are with storage battery 12V voltage inversion becoming 220V square-wave voltage.
Inverter is by being pulse-width modulation oscillating circuit IC1 (SG3524) and related elements formation multivibrator circuit; The frequency of oscillation of circuit is 50～250Hz; Carry out pulse-width modulation at pulse-width modulation oscillating circuit IC1 the 9th pin through external linear potentiometer; Thereby the control power output at pulse-width modulation oscillating circuit IC1 the 2nd pin external voltage comparison circuit, can be stablized the output square-wave voltage.Through the 11st pin, two outputs of the 14th pin of pulse-width modulation oscillating circuit IC1, directly drive the push-pull power amplifier circuit of forming by N channel enhancement FET VT1～VT2, by step-up transformer T output 220V square-wave voltage; The output of step-up transformer T inserts capacitor C 3, the shaping that is used to export square-wave voltage.
Technical scheme: adjustable power four hectowatt inverters, it comprises 12V DC power supply, multivibrator circuit, pulse-width modulation circuit, voltage comparator circuit, push-pull power amplifier circuit, booster circuit and output square-wave voltage shaping circuit, it is characterized in that:
Multivibrator circuit: form by pulse-width modulation oscillating circuit IC1, resistance R 2, resistance R 4 and resistance R 6, capacitor C 2; The model that pulse-width modulation oscillating circuit IC1 selects for use is SG3524; The 1st pin of pulse-width modulation oscillating circuit IC1 is through resistance R 2 connection circuit ground GND; The 4th pin of pulse-width modulation oscillating circuit IC1, the 5th pin and the 8th pin connection circuit ground GND; The 6th pin of pulse-width modulation oscillating circuit IC1 is through resistance R 6 connection circuit ground GND; The 7th pin of pulse-width modulation oscillating circuit IC1 passes through capacitor C 2 connection circuit ground GND, the end of the 12nd pin of pulse-width modulation oscillating circuit IC1 and the 13rd pin connecting resistance R4, the anodal VCC of the 15th pin of pulse-width modulation oscillating circuit IC1 and the other end connection circuit of resistance R 4;
Pulse-width modulation circuit: form by resistance R 1, electrochemical capacitor C1 and linear potentiometer RP; The 9th pin of pulse-width modulation oscillating circuit IC1 links to each other with an end of the end of linear potentiometer RP, resistance R 1 and the negative pole of electrochemical capacitor C1; The 1st pin of pulse-width modulation oscillating circuit IC1 connects the positive pole of electrochemical capacitor C1; The other end of linear potentiometer RP and lever arm connection circuit ground GND thereof, the anodal VCC of the other end connection circuit of resistance R 1;
Voltage comparator circuit: form by resistance R 3 and resistance R 5; The end of the 2nd pin connecting resistance R3 of pulse-width modulation oscillating circuit IC1 and an end of resistance R 5; The other end connection circuit ground GND of resistance R 3, the other end of the 16th pin connecting resistance R5 of pulse-width modulation oscillating circuit IC1;
Recommend power output circuit: the 14th pin of pulse-width modulation oscillating circuit IC1 connects the grid of N channel enhancement FET VT1; The drain electrode of N channel enhancement FET VT1 connects the end of the same name of step-up transformer T primary coil L1; The anodal VCC of the termination circuit of the same name of the different name end of step-up transformer T primary coil L1 and step-up transformer T primary coil L2; The 11st pin of pulse-width modulation oscillating circuit IC1 connects the grid of N channel enhancement FET VT2; The drain electrode of N channel enhancement FET VT2 connects the different name end of step-up transformer T primary coil L2, the source electrode connection circuit ground GND of the source electrode of N channel enhancement FET VT1 and N channel enhancement FET VT2;
Booster circuit and output voltage shaping circuit: be made up of step-up transformer T secondary coil L3, capacitor C 3 and 220V supply socket CZ, the two ends of step-up transformer T secondary coil L3 are connected on the two ends of capacitor C 3 and 220V supply socket CZ respectively.
The anodal VCC of 12V dc power anode connection circuit, the 12V dc power cathode links to each other with circuit ground GND.
Description of drawings
Embodiment
Circuit working schematic diagram and description of drawings according to the four hectowatt inverters of adjustable power shown in the accompanying drawing 1; And according to the annexation between the components and parts in the said circuit of summary of the invention, and the components and parts technical parameter described in the execution mode requires to implement to realize the present invention.
The selection of components and parts and technical parameter
IC1 is the pulse-width modulation oscillating circuit, and the model of selecting for use is SG3524;
VT1～VT2 is a N channel enhancement FET, and the model of selecting for use is IRF1010, and to require technical parameter be 50V, more than the 50A, packing forms TO-220;
Resistance is selected the metalfilmresistor of 1/4W for use, and the resistance of resistance R 1 is 4.7k Ω; The resistance of resistance R 2 is 100k Ω; The resistance of resistance R 3 is 10k Ω; Resistance R 4 resistances are 2k Ω; Resistance R 5 resistances are 15k Ω; The resistance of resistance R 6 is 57k Ω;
RP is a linear potentiometer, and its resistance is 22k Ω;
C1 is an electrochemical capacitor, and capacity is 0.33 μ F/25V; C2 is an electric capacity of the dacron, and its capacity is 0.1 μ F; C3 is an electric capacity of the dacron, and its capacity is 0.1 μ F/500V;
The 12V DC current source is selected two groups of 12V, 20AH maintenance free cell for use;
CZ is the 220V supply socket.
Circuit production main points, circuit debugging and use
The making of step-up transformer T: the magnetic core of step-up transformer T is selected EI type ferrite magnetic core or ring type magnetic core for use, and selecting common EI type or FF type silicon steel sheet for use is iron core, and its power supply conversion efficiency will reduce; The core dimensions of silicon steel sheet is 4cm * 4cm; Primary coil L1 is with 10 strands of coiling 30 circles of
enamelled wire (No. 29); Primary coil L2 is with
10 strands of coiling 30 circles, and secondary coil is with 0.9mm enamelled wire (No. 20) coiling 600 circles; Magazine can use the thick hard card paper of 1mm to make, and notes the mark of primary coil L1, primary coil L2 end of the same name; The frequency of oscillation of circuit of the present invention is up to 250Hz, and is higher five times than power frequency 50Hz, and when selecting for use frequency of oscillation to be 250Hz, the number of turn of the size of step-up transformer T and primary coil and secondary rolling thread circle can reduce in right amount;
The frequency of oscillation of the parameter determining circuit of the 7th pin of pulse-width modulation oscillating circuit IC1, the resistance that the 6th pin is connect and electric capacity;
N channel enhancement FET VT1～VT2 is a high-power components, and use must be installed the large scale radiator additional;
In 220V supply socket CZ, connect the load of 300W, circuitry can be heard slight frizzle after connecting the 12V DC power supply, and multivibrator circuit starting of oscillation is described; If multivibrator circuit do not have starting of oscillation, can the two ends of primary coil L1 or primary coil L2 be exchanged and get final product;
Adjust potentiometer RP2, can adjust the frequency of oscillation of circuit, the frequency of oscillation that suitably improves multivibrator circuit helps improving the conversion efficiency of inverter, but frequency of oscillation requirement≤55Hz, otherwise might have influence on the safe in utilization of some electrical appliance;
If need further to increase power output, as long as respectively last and connect the consistent N channel enhancement FET of 1～2 technical parameter at N channel enhancement FET VT1～VT2;
When output of the present invention was unloaded, its output voltage can be higher than 250V.
Claims (2)
1. adjustable power four hectowatt inverters, it comprises 12V DC power supply, multivibrator circuit, pulse-width modulation circuit, voltage comparator circuit, push-pull power amplifier circuit, booster circuit and output square-wave voltage shaping circuit, it is characterized in that:
Multivibrator circuit is made up of pulse-width modulation oscillating circuit IC1, resistance R 2, resistance R 4 and resistance R 6, capacitor C 2; The model that pulse-width modulation oscillating circuit IC1 selects for use is SG3524; The 1st pin of pulse-width modulation oscillating circuit IC1 is through resistance R 2 connection circuit ground GND; The 4th pin of pulse-width modulation oscillating circuit IC1, the 5th pin and the 8th pin connection circuit ground GND; The 6th pin of pulse-width modulation oscillating circuit IC1 is through resistance R 6 connection circuit ground GND; The 7th pin of pulse-width modulation oscillating circuit IC1 passes through capacitor C 2 connection circuit ground GND, the end of the 12nd pin of pulse-width modulation oscillating circuit IC1 and the 13rd pin connecting resistance R4, the anodal VCC of the 15th pin of pulse-width modulation oscillating circuit IC1 and the other end connection circuit of resistance R 4;
Pulse-width modulation circuit is made up of resistance R 1, electrochemical capacitor C1 and linear potentiometer RP; The 9th pin of pulse-width modulation oscillating circuit IC1 links to each other with an end of the end of linear potentiometer RP, resistance R 1 and the negative pole of electrochemical capacitor C1; The 1st pin of pulse-width modulation oscillating circuit IC1 connects the positive pole of electrochemical capacitor C1; The other end of linear potentiometer RP and lever arm connection circuit ground GND thereof, the anodal VCC of the other end connection circuit of resistance R 1;
Voltage comparator circuit is formed the end of the 2nd pin connecting resistance R3 of pulse-width modulation oscillating circuit IC1 and an end of resistance R 5, the other end connection circuit ground GND of resistance R 3, the other end of the 16th pin connecting resistance R5 of pulse-width modulation oscillating circuit IC1 by resistance R 3 and resistance R 5;
The 14th pin of recommending pulse-width modulation oscillating circuit IC1 in the power output circuit connects the grid of N channel enhancement FET VT1; The drain electrode of N channel enhancement FET VT1 connects the end of the same name of step-up transformer T primary coil L1; The anodal VCC of the termination circuit of the same name of the different name end of step-up transformer T primary coil L1 and step-up transformer T primary coil L2; The 11st pin of pulse-width modulation oscillating circuit IC1 connects the grid of N channel enhancement FET VT2; The drain electrode of N channel enhancement FET VT2 connects the different name end of step-up transformer T primary coil L2, the source electrode connection circuit ground GND of the source electrode of N channel enhancement FET VT1 and N channel enhancement FET VT2;
Booster circuit and output voltage shaping circuit are made up of step-up transformer T secondary coil L3, capacitor C 3 and 220V supply socket CZ, and the two ends of step-up transformer T secondary coil L3 are connected on the two ends of capacitor C 3 and 220V supply socket CZ respectively.
2. adjustable power four hectowatt inverters according to claim 1 is characterized in that: the anodal VCC of 12V dc power anode connection circuit, the 12V dc power cathode links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102966987A CN102780415A (en) | 2012-08-20 | 2012-08-20 | Power-adjustable four-hundred watt inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102966987A CN102780415A (en) | 2012-08-20 | 2012-08-20 | Power-adjustable four-hundred watt inverter |
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| CN102780415A true CN102780415A (en) | 2012-11-14 |
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| CN2012102966987A Pending CN102780415A (en) | 2012-08-20 | 2012-08-20 | Power-adjustable four-hundred watt inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702136A (en) * | 2013-12-10 | 2015-06-10 | 美固电子(深圳)有限公司 | Voltage stability control circuit and voltage stability control method for corrective-wave vehicle-mounted inverter output voltage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285372A (en) * | 1991-10-23 | 1994-02-08 | Henkel Corporation | Power supply for an ozone generator with a bridge inverter |
| CN201976297U (en) * | 2011-01-27 | 2011-09-14 | 陈铁山 | Automobile/motorcycle headlamp light amplifier |
| CN202737778U (en) * | 2012-08-20 | 2013-02-13 | 何林 | Variable-power 400W inverter |
-
2012
- 2012-08-20 CN CN2012102966987A patent/CN102780415A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285372A (en) * | 1991-10-23 | 1994-02-08 | Henkel Corporation | Power supply for an ozone generator with a bridge inverter |
| CN201976297U (en) * | 2011-01-27 | 2011-09-14 | 陈铁山 | Automobile/motorcycle headlamp light amplifier |
| CN202737778U (en) * | 2012-08-20 | 2013-02-13 | 何林 | Variable-power 400W inverter |
Non-Patent Citations (1)
| Title |
|---|
| 雷跃等: "工频小功率逆变器的设计与制作", 《电子制作》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702136A (en) * | 2013-12-10 | 2015-06-10 | 美固电子(深圳)有限公司 | Voltage stability control circuit and voltage stability control method for corrective-wave vehicle-mounted inverter output voltage |
| CN104702136B (en) * | 2013-12-10 | 2017-10-17 | 美固电子(深圳)有限公司 | Correct the controlling circuit of voltage regulation and control method of ripple vehicle-mounted inverter output voltage |
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Application publication date: 20121114 |