CN104467490A - Automatic switching circuit for double voltage rectification and half-wave rectification - Google Patents
Automatic switching circuit for double voltage rectification and half-wave rectification Download PDFInfo
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- CN104467490A CN104467490A CN201310430935.9A CN201310430935A CN104467490A CN 104467490 A CN104467490 A CN 104467490A CN 201310430935 A CN201310430935 A CN 201310430935A CN 104467490 A CN104467490 A CN 104467490A
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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
- H02M7/30—Conversion of ac power input into dc power output without possibility of reversal by dynamic converters
Abstract
An automatic switching circuit for double voltage rectification and half-wave rectification comprises a voltage detecting module, a circuit switching module and a dual voltage rectifying module. An AC voltage of 110 V/220 V can be converted into a DC voltage of about 300 V. Compared with a traditional switching power supply solution, a lower cost and a smaller size can be achieved, and thus the automatic switching circuit is very practical.
Description
Technical field
The present invention relates to voltage stable circuit, particularly relate to and be a kind ofly applied to the voltage multiplying rectifier of 110V/220V dual-purpose electronic product and the automatic switch-over circuit of halfwave rectifier.
Background technology
The voltage that current countries in the world indoor electric uses has two kinds substantially, is respectively 100V ~ 130V and 220V ~ 240V two types.The classified low pressure of 100V ~ 130V, as the state such as the U.S., Japan uses low pressure.220V ~ 240V then classifies as high pressure, as China and most of Europe country use high pressure.When design electronic products, these two kinds of voltage class of simultaneous adaptation then to need design two kinds of circuit products, or solve by Switching Power Supply scheme, but this circuit is complicated, cost is high.
Summary of the invention
Based on this, provide that a kind of circuit is simple, cost is low is applied to the low pressure/voltage multiplying rectifier of high pressure dual-purpose electronic product and the automatic switch-over circuit of halfwave rectifier.
An automatic switch-over circuit for voltage multiplying rectifier and halfwave rectifier, comprises the first input end of alternating voltage, the second input of alternating voltage, voltage doubling rectifier module, half-wave rectification block, circuit handover module, voltage output end and earth terminal.
Described voltage doubling rectifier module comprises the first input end be connected with the second input of described alternating voltage, the second input be connected with the first input end of described alternating voltage, the output that is connected with described circuit handover module.
Described half-wave rectification block comprises the 3rd input be connected with the first input end of described alternating voltage, the four-input terminal be connected with the second input of described alternating voltage, the output that is connected with described circuit handover module.
The second output that described circuit handover module comprises the four-input terminal be connected with the output of described voltage doubling rectifier module, the 6th input be connected with the output of described half-wave rectification block, the first output be connected with described voltage output end and is connected with described earth terminal.
Described voltage doubling rectifier module is used for the voltage multiplying rectifier to described alternating voltage; Described half-wave rectification block is used for the halfwave rectifier to described alternating voltage; Described circuit handover module is the first voltage or the second voltage for detecting described alternating voltage, and automatically switches to half-wave rectification block or voltage doubling rectifier module according to the result of described detection.
Wherein in an embodiment, described voltage doubling rectifier module comprises rectifier diode D2, rectifier diode D3, electrochemical capacitor C1 and electrochemical capacitor C2.
The positive pole of rectifier diode D2 is as the first input end of described voltage doubling rectifier module, and the negative pole of electrochemical capacitor C1 is as the second input of described voltage doubling rectifier module; The negative pole of rectifier diode D2 connects the positive pole of electrochemical capacitor C1 and the positive pole of rectifier diode D3, and the negative pole of rectifier diode D3 connects the positive pole of electrochemical capacitor C2, and the negative pole of electrochemical capacitor C2 connects the positive pole of rectifier diode D2; The positive pole of electrochemical capacitor C2 is as the input of described voltage doubling rectifier module.
Wherein in an embodiment, described half-wave rectification block comprises rectifier diode D1, electrochemical capacitor C3.
The positive pole of rectifier diode D1 is as the 3rd input of described half-wave rectification block, the negative pole of electrochemical capacitor C3 is as the four-input terminal of described half-wave rectification block, the negative pole of rectifier diode D1 is connected with electrochemical capacitor C3 positive pole, and the negative pole of rectifier diode D1 is as the output of described half-wave rectification block.
Wherein in an embodiment, described circuit handover module comprises voltage stabilizing didoe ZD1, rectifier diode D5, current-limiting resistor R1, current-limiting resistor R2, NPN type triode Q1, relay K 1.
Relay K 1 comprises moving contact, the first fixed contact, the second fixed contact, the first power supply terminal, the second power supply terminal; When not having operating current between the first power supply terminal and the second power supply terminal, moving contact connects the first fixed contact, and moving contact does not connect the second fixed contact; When there being operating current between the first power supply terminal and the second power supply terminal, moving contact connects the second fixed contact, and moving contact does not connect the first fixed contact; First fixed contact is as the 5th input of described circuit handover module, and the second fixed contact is as the 6th input of described circuit handover module, and moving contact is as the first output of described circuit handover module.
The negative pole of voltage stabilizing didoe ZD1 connects the second fixed contact, the positive pole of voltage stabilizing didoe ZD1 is connected with the base stage of NPN type triode Q1 by current-limiting resistor R1, the collector electrode of NPN type triode Q1 connects the positive pole of rectifier diode D5 and the second power supply terminal of relay K 1, the negative pole of rectifier diode D5 connects the first power supply terminal of relay K 1, the base stage of NPN type triode Q1 is connected with the emitter of NPN type triode Q1 by current-limiting resistor R2, and the emitter of NPN type triode Q1 is as the second output of described circuit handover module.
Wherein in an embodiment, described relay K 1 is electromagnetic relay.
Wherein in an embodiment, the breakdown voltage value of voltage stabilizing didoe ZD1 is 200V.
Wherein in an embodiment, the model of NPN type triode Q1 is 8050 or 9013.
Wherein in an embodiment, the model of rectifier diode D5 is IN4148.
Wherein in an embodiment, described voltage doubling rectifier module comprises rectifier diode D4, rectifier diode D5, electrochemical capacitor C3, electrochemical capacitor C4.
The automatic switch-over circuit of above-mentioned voltage multiplying rectifier and halfwave rectifier, it is the first voltage (high pressure) 2v or the second voltage (low pressure) v that described circuit handover module detects input voltage, and automatically switches to half-wave rectification block or voltage doubling rectifier module according to the result detected.Particularly, it is high pressure 2v that described circuit handover module detects input voltage, then described circuit handover module switches to half-wave rectification block, described voltage output end output voltage
it is low pressure v that described circuit handover module detects input voltage, and described circuit handover module switches to voltage doubling rectifier module, described voltage output end output voltage
like this, no matter input voltage is high pressure 2v or low pressure v, can obtain same output dc voltage
the above-mentioned circuit being applied to low pressure/high pressure dual-purpose electronic product is relative to Switching Power Supply scheme, and circuit is simpler, volume is less, cost is lower.
Accompanying drawing explanation
Fig. 1 is the module map of the automatic switch-over circuit of an embodiment voltage multiplying rectifier and halfwave rectifier;
Fig. 2 is the schematic diagram of the automatic switch-over circuit of an embodiment voltage multiplying rectifier and halfwave rectifier.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As shown in Figure 1, be the module map of automatic switch-over circuit of an embodiment voltage multiplying rectifier and halfwave rectifier.
An automatic switch-over circuit for voltage multiplying rectifier and halfwave rectifier, comprises the first input end VIN1 of alternating voltage VIN, the second input VIN2 of alternating voltage VIN, voltage doubling rectifier module 110, half-wave rectification block 120, circuit handover module 130, voltage output end VO and earth terminal GND.
Voltage doubling rectifier module 110 comprises the first input end be connected with the second input VIN2 of alternating voltage VIN, the second input be connected with the first input end VIN1 of alternating voltage VIN, the output that is connected with circuit handover module 130.
Half-wave rectification block 120 comprises the 3rd input be connected with the first input end VIN1 of alternating voltage VIN, the four-input terminal be connected with the second input VIN2 of alternating voltage VIN, the output that is connected with circuit handover module 130.
The second output that circuit handover module 130 comprises the four-input terminal be connected with the output of voltage doubling rectifier module 110, the 6th input be connected with the output of half-wave rectification block 120, the first output be connected with voltage output end VO and is connected with earth terminal GND.
Voltage doubling rectifier module 110 is for the voltage multiplying rectifier to alternating voltage VIN; Half-wave rectification block 120 is for the halfwave rectifier to alternating voltage VIN; Circuit handover module 130 is the first voltage or the second voltage for detecting alternating voltage VIN, and automatically switches to half-wave rectification block 120 or voltage doubling rectifier module 110 according to the result detected.
The automatic switch-over circuit of above-mentioned voltage multiplying rectifier and halfwave rectifier, it is the first voltage (high pressure) 2v or the second voltage (low pressure) v that circuit handover module 130 detects input voltage, and automatically switches to half-wave rectification block 120 or voltage doubling rectifier module 110 according to the result detected.Particularly, it is high pressure 2v that circuit handover module 130 detects input voltage, then circuit handover module 130 switches to half-wave rectification block 120, voltage output end VO output voltage
it is low pressure v that circuit handover module 130 detects input voltage, and circuit handover module 130 switches to voltage doubling rectifier module 110, voltage output end VO output voltage
like this, the alternating voltage VIN no matter inputted is high pressure 2v or low pressure v, can obtain same output dc voltage
such as, input voltage is 110V, then output voltage is 220
about 300V; Input voltage is 220V, then output voltage is also
about 300V.Like this, the alternating voltage VIN no matter inputted is high pressure or low pressure, can obtain substantially identical output dc voltage.The above-mentioned circuit being applied to low pressure/high pressure dual-purpose electronic product is relative to Switching Power Supply scheme, and circuit is simpler, volume is less, cost is lower.
Below embodiment is described in more detail.
Fig. 2 is the schematic diagram of the automatic switch-over circuit of an embodiment voltage multiplying rectifier and halfwave rectifier.
In the present embodiment, voltage doubling rectifier module 110 comprises rectifier diode D2, rectifier diode D3, electrochemical capacitor C1 and electrochemical capacitor C2.
The positive pole of rectifier diode D2 is as the first input end of voltage doubling rectifier module 110, and the negative pole of electrochemical capacitor C1 is as the second input of voltage doubling rectifier module 110; The negative pole of rectifier diode D2 connects the positive pole of electrochemical capacitor C1 and the positive pole of rectifier diode D3, and the negative pole of rectifier diode D3 connects the positive pole of electrochemical capacitor C2, and the negative pole of electrochemical capacitor C2 connects the positive pole of rectifier diode D2; The positive pole of electrochemical capacitor C2 is as the input of voltage doubling rectifier module 110.
In the present embodiment, half-wave rectification block 120 comprises rectifier diode D1, electrochemical capacitor C3.
The positive pole of rectifier diode D1 is as the 3rd input of half-wave rectification block 120, the negative pole of electrochemical capacitor C3 is as the four-input terminal of half-wave rectification block 120, the negative pole of rectifier diode D1 is connected with electrochemical capacitor C3 positive pole, and the negative pole of rectifier diode D1 is as the output of half-wave rectification block 120.
In the present embodiment, circuit handover module 130 comprises voltage stabilizing didoe ZD1, rectifier diode D5, current-limiting resistor R1, current-limiting resistor R2, NPN type triode Q1, relay K 1.
Relay K 1 comprises moving contact 3, first fixed contact 1, second fixed contact 2, first power supply terminal 4, second power supply terminal 5; When not having operating current between the first power supply terminal 4 and the second power supply terminal 5, moving contact 3 connects the first fixed contact 1, and moving contact 3 does not connect the second fixed contact 2; When there being operating current between the first power supply terminal 4 and the second power supply terminal 5, moving contact 3 connects the second fixed contact 2, and moving contact 3 does not connect the first fixed contact 1; First fixed contact 1 is as the 5th input of circuit handover module 130, and the second fixed contact 2 is as the 6th input of circuit handover module 130, and moving contact 3 is as the first output of circuit handover module 130.
The negative pole of voltage stabilizing didoe ZD1 connects the second fixed contact 2, the positive pole of voltage stabilizing didoe ZD1 is connected with the base stage of NPN type triode Q1 by current-limiting resistor R1, the collector electrode of NPN type triode Q1 connects the positive pole of rectifier diode D5 and the second power supply terminal 5 of relay K 1, the negative pole of rectifier diode D5 connects the first power supply terminal 4 of relay K 1, the base stage of NPN type triode Q1 is connected with the emitter of NPN type triode Q1 by current-limiting resistor R2, and the emitter of NPN type triode Q1 is as the second output of circuit handover module 130.
In the present embodiment, described relay K 1 is electromagnetic relay.
In the present embodiment, the breakdown voltage value of voltage stabilizing didoe ZD1 is 200V.
In the present embodiment, the model of NPN type triode Q1 is 8050, can also be 9013 in other embodiments.
In the present embodiment, the model of rectifier diode D5 is IN4148.
For convenience of description, this example with 220V be the first magnitude of voltage (high pressure), 110V is that the second magnitude of voltage (low pressure) does the explanation of detailed operation principle.
As the negative half-cycle input 220V to VIN1 of the alternating voltage VIN inputted, electric current flows through the negative pole of rectifier diode D1 to voltage stabilizing didoe ZD1, and voltage stabilizing didoe ZD1 is punctured, so limit has electric current to flow through current-limiting resistor R1 and current-limiting resistor R2.The pressure drop of current-limiting resistor R2 makes NPN type triode Q1 conducting, so when the second power supply terminal 5 of relay K 1 exists operating voltage VK, relay K 1 is energized work, moving contact 3 is thrown off with the first fixed contact 1 be connected, and tangential second fixed contact 2 is attached thereto.So, after the half-wave rectifying circuit halfwave rectifier of half-wave rectification block 120
vD just export voltage output end VO to.
As the negative half-cycle input 110V to VIN1 of the alternating voltage VIN inputted, electric current flows through the negative pole of rectifier diode D1 to voltage stabilizing didoe ZD1, because undertension punctures to make voltage stabilizing didoe ZD1, the work so relay K 1 is not energized, moving contact 3 is connected with the first fixed contact 1, and moving contact 3 is not connected with the second fixed contact 2.So, after the voltage doubling rectifing circuit voltage multiplying rectifier of voltage doubling rectifier module 110
vD just export voltage output end VO to.
Like this, the alternating voltage VIN no matter inputted is high pressure 220V or low pressure 110V, and output voltage is all
direct voltage, reach purpose of design.The above-mentioned circuit being applied to low pressure/high pressure dual-purpose electronic product is relative to Switching Power Supply scheme, and circuit is simpler, volume is less, cost is lower.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the automatic switch-over circuit of a voltage multiplying rectifier and halfwave rectifier, it is characterized in that, comprise the first input end of alternating voltage, the second input of alternating voltage, voltage doubling rectifier module, half-wave rectification block, circuit handover module, voltage output end and earth terminal;
Described voltage doubling rectifier module comprises the first input end be connected with the second input of described alternating voltage, the second input be connected with the first input end of described alternating voltage, the output that is connected with described circuit handover module;
Described half-wave rectification block comprises the 3rd input be connected with the first input end of described alternating voltage, the four-input terminal be connected with the second input of described alternating voltage, the output that is connected with described circuit handover module;
The second output that described circuit handover module comprises the four-input terminal be connected with the output of described voltage doubling rectifier module, the 6th input be connected with the output of described half-wave rectification block, the first output be connected with described voltage output end and is connected with described earth terminal;
Described voltage doubling rectifier module is used for the voltage multiplying rectifier to described alternating voltage; Described half-wave rectification block is used for the halfwave rectifier to described alternating voltage; Described circuit handover module is the first voltage or the second voltage for detecting described alternating voltage, and automatically switches to half-wave rectification block or voltage doubling rectifier module according to the result of described detection.
2. the automatic switch-over circuit of voltage multiplying rectifier according to claim 1 and halfwave rectifier, is characterized in that, described voltage doubling rectifier module comprises rectifier diode D2, rectifier diode D3, electrochemical capacitor C1 and electrochemical capacitor C2;
The positive pole of rectifier diode D2 is as the first input end of described voltage doubling rectifier module, and the negative pole of electrochemical capacitor C1 is as the second input of described voltage doubling rectifier module; The negative pole of rectifier diode D2 connects the positive pole of electrochemical capacitor C1 and the positive pole of rectifier diode D3, and the negative pole of rectifier diode D3 connects the positive pole of electrochemical capacitor C2, and the negative pole of electrochemical capacitor C2 connects the positive pole of rectifier diode D2; The positive pole of electrochemical capacitor C2 is as the input of described voltage doubling rectifier module.
3. the automatic switch-over circuit of voltage multiplying rectifier according to claim 1 and halfwave rectifier, is characterized in that, described half-wave rectification block comprises rectifier diode D1, electrochemical capacitor C3;
The positive pole of rectifier diode D1 is as the 3rd input of described half-wave rectification block, the negative pole of electrochemical capacitor C3 is as the four-input terminal of described half-wave rectification block, the negative pole of rectifier diode D1 is connected with electrochemical capacitor C3 positive pole, and the negative pole of rectifier diode D1 is as the output of described half-wave rectification block.
4. the automatic switch-over circuit of voltage multiplying rectifier according to claim 1 and halfwave rectifier, it is characterized in that, described circuit handover module comprises voltage stabilizing didoe ZD1, rectifier diode D5, current-limiting resistor R1, current-limiting resistor R2, NPN type triode Q1, relay K 1;
Relay K 1 comprises moving contact, the first fixed contact, the second fixed contact, the first power supply terminal, the second power supply terminal; When not having operating current between the first power supply terminal and the second power supply terminal, moving contact connects the first fixed contact, and moving contact does not connect the second fixed contact; When there being operating current between the first power supply terminal and the second power supply terminal, moving contact connects the second fixed contact, and moving contact does not connect the first fixed contact; First fixed contact is as the 5th input of described circuit handover module, and the second fixed contact is as the 6th input of described circuit handover module, and moving contact is as the first output of described circuit handover module;
The negative pole of voltage stabilizing didoe ZD1 connects the second fixed contact, the positive pole of voltage stabilizing didoe ZD1 is connected with the base stage of NPN type triode Q1 by current-limiting resistor R1, the collector electrode of NPN type triode Q1 connects the positive pole of rectifier diode D5 and the second power supply terminal of relay K 1, the negative pole of rectifier diode D5 connects the first power supply terminal of relay K 1, the base stage of NPN type triode Q1 is connected with the emitter of NPN type triode Q1 by current-limiting resistor R2, and the emitter of NPN type triode Q1 is as the second output of described circuit handover module.
5. the automatic switch-over circuit of voltage multiplying rectifier according to claim 4 and halfwave rectifier, is characterized in that, described relay K 1 is electromagnetic relay.
6. the automatic switch-over circuit of voltage multiplying rectifier according to claim 4 and halfwave rectifier, is characterized in that, the breakdown voltage value of voltage stabilizing didoe ZD1 is 200V.
7. the automatic switch-over circuit of voltage multiplying rectifier according to claim 4 and halfwave rectifier, is characterized in that, the model of NPN type triode Q1 is 8050 or 9013.
8. the automatic switch-over circuit of voltage multiplying rectifier according to claim 4 and halfwave rectifier, is characterized in that, the model of rectifier diode D5 is IN4148.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310430935.9A CN104467490B (en) | 2013-09-18 | 2013-09-18 | The automatic switch-over circuit of voltage multiplying rectifier and halfwave rectifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310430935.9A CN104467490B (en) | 2013-09-18 | 2013-09-18 | The automatic switch-over circuit of voltage multiplying rectifier and halfwave rectifier |
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| CN104467490A true CN104467490A (en) | 2015-03-25 |
| CN104467490B CN104467490B (en) | 2018-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917403A (en) * | 2015-05-25 | 2015-09-16 | 张家港市华为电子有限公司 | Automatic switching circuit in power supply applicable to 220V and 110V power grids |
| CN110690827A (en) * | 2019-09-19 | 2020-01-14 | 江苏邦士医疗科技有限公司 | Isolation type programmable automatic voltage doubling rectifying circuit |
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