CN204103590U - A kind of twin voltage automatic switching control circuit - Google Patents
A kind of twin voltage automatic switching control circuit Download PDFInfo
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- CN204103590U CN204103590U CN201420529555.0U CN201420529555U CN204103590U CN 204103590 U CN204103590 U CN 204103590U CN 201420529555 U CN201420529555 U CN 201420529555U CN 204103590 U CN204103590 U CN 204103590U
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Abstract
The utility model provides a kind of twin voltage automatic switching control circuit, belongs to power technique fields.It solve existing technology circuit complex structure and the high problem of cost.This twin voltage automatic switching control circuit, comprise energization input, relay S2, bridge rectifier, voltage detecting and controling circuit, power supply output and electrochemical capacitor C1 and electrochemical capacitor C2, electrochemical capacitor C1 and electrochemical capacitor C2 connects power supply output and bridge rectifier after connecting, energization input is connected with the common port of relay S2, the normally-closed contact of relay S2 is connected with bridge rectifier, the normally opened contact of relay S2 is connected with the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, 3 pin of voltage detecting and controling circuit connect power supply output, the coil of 2 pin contact relay S2 of voltage detecting and controling circuit.This twin voltage automatic switching control circuit can carry out automatically switching according to line voltage difference and circuit is simple.
Description
Technical field
The utility model belongs to power technique fields, relates to a kind of voltage commutation circuit, particularly a kind of twin voltage automatic switching control circuit automatically switched to 110V and 220V.
Background technology
Well-known: current input voltage kind is all over the world a lot, be roughly divided into 110V and 220V two kinds, because two kinds of voltage difference are comparatively large, when designing international series products, a lot of producer have employed a toggle switch, is used for the kind of manual switchover input voltage.If but in practical operation operator's misoperation or operating mistake, the damage of electronic circuit can be caused, bring certain economic loss.
For above-mentioned Problems existing, existing Chinese patent literature discloses a kind of twin voltage control method for automatically switching and system [application number: CN 201410032357.8], comprising: energization input, for accessing supply power voltage; Power supply output, for exporting supply power voltage; Voltage doubling rectifing circuit, for carrying out voltage multiplying rectifier when supply power voltage is less than pre-set threshold value to supply power voltage; Bridge rectifier, for carrying out bridge rectifier when supply power voltage is more than or equal to pre-set threshold value to supply power voltage; Commutation circuit, for connecting energization input and voltage doubling rectifing circuit or bridge rectifier; Voltage detecting and controling circuit, for monitoring supply power voltage, and controls commutation circuit according to supply power voltage and energization input and voltage doubling rectifing circuit or bridge rectifier is connected.Also disclose a kind of twin voltage control method for automatically switching simultaneously.Although this twin voltage control method for automatically switching and system can automatically switch according to voltage difference, but this twin voltage control method for automatically switching and circuit system complex structure, its voltage detecting and controling circuit is after normal work, still line voltage is detected, wastes power resource, cost-saving not.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, and proposing one can carry out automatically switching according to line voltage difference and the simple twin voltage automatic switching control circuit of circuit.
The purpose of this utility model realizes by following technical proposal: a kind of twin voltage automatic switching control circuit, it is characterized in that, described twin voltage automatic switching control circuit comprises energization input, relay S2, bridge rectifier, voltage detecting and controling circuit, power supply output and electrochemical capacitor C1 and electrochemical capacitor C2, described electrochemical capacitor C1 and electrochemical capacitor C2 connects power supply output and bridge rectifier after connecting, described energization input is connected with the common port of relay S2, the normally-closed contact of relay S2 is connected with bridge rectifier, the normally opened contact of relay S2 is connected with the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, 3 pin of described voltage detecting and controling circuit connect power supply output to detect the voltage at electrochemical capacitor C1 and electrochemical capacitor C2 two ends, the coil of 2 pin contact relay S2 of described voltage detecting and controling circuit is to realize according to the different switching carried out in relay S2 between normally opened contact and normally-closed contact of line voltage.
This twin voltage automatic switching control circuit, be connected to the civil power of outside input at circuit after, relay S2 is in default conditions, and circuit during default conditions is common rectification circuit and filter circuit, wherein electrochemical capacitor C1 and electrochemical capacitor C2 is filter circuit, and the alternating current of coming in is rectified filtering, simultaneously, 3 pin of voltage detecting and controling circuit are connected on filter circuit and rectification circuit for detecting and judging the magnitude of voltage after rectifying and wave-filtering, the i.e. voltage at the rear two ends of electrochemical capacitor C1 and electrochemical capacitor C2 series connection, more than 200V, just judge that primary voltage is 200VAC AC system, relay S2 keeps original state not work, lower than 200V, just judge that primary voltage is 110VAC AC system, 2 pin control relay S2 adhesives of voltage detecting and controling circuit, make relay S2 switching position, after switching, energization input is directly connected to the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, form rectification multiple pressuring circuit, can by the twice of the ac voltage rectifier of input to input voltage, can guarantee when 110VAC and 220VAC primary voltage by this twin voltage automatic switching control circuit, the voltage of rectifying and wave-filtering is all the voltage of 300V, ensure that the transformation of motor exports, and this control circuit annexation is simple, be easy to realize.
In above-mentioned twin voltage automatic switching control circuit, between described energization input and relay S2, be connected with the precharging circuit for the protection of circuit.Between energization input with relay S2, be connected precharging circuit, the surge current that restriction power supply connects moment can be played, exempt from destruction to protect electronic equipment.
In above-mentioned twin voltage automatic switching control circuit, described precharging circuit comprises the resistance R1 be connected between energization input and relay S2.
In above-mentioned twin voltage automatic switching control circuit, described precharging circuit also comprises the relay S1 be connected in parallel on resistance R1, and the coil-end of described relay S1 is connected with 1 pin of voltage detecting and controling circuit.Resistance R1 is connected in parallel relay S1, this relay is after voltage detecting and controling circuit detects line voltage, control relay S1 closes, be connected in parallel on this loop conducting on resistance R1, now voltage detecting and controling circuit then stops the detection to C1 and C2 both end voltage, avoid motor and still carrying out the detection to line voltage after normal work, save electric power resource.
In above-mentioned twin voltage automatic switching control circuit, between described energization input and precharging circuit, be connected with hand switch S0.
In above-mentioned twin voltage automatic switching control circuit, the two ends after described electrochemical capacitor C1 and electrochemical capacitor C2 connects also are parallel with load resistance R2.
In above-mentioned twin voltage automatic switching control circuit, described voltage detecting and controling circuit comprises transformer, bleeder circuit, precise rectification circuit, LC filter circuit and single-chip microcomputer, described power supply output is connected to bleeder circuit by transformer, bleeder circuit connects precise rectification circuit, precise rectification circuit is connected with LC filter circuit, is connected with A/D change-over circuit between LC filter circuit and single-chip microcomputer.The voltage of power supply output is by transformer, bleeder circuit, full-wave rectification, LC filtering, its High-frequency Interference harmonic wave of filtering, obtain the voltage with ripple that applicable A/D changes, and then flow to single-chip microcomputer and process, single-chip microcomputer switches according to the difference of the voltage of conveying and then control relay, thus ensures that the transformation of motor exports.
Compared with prior art, this twin voltage automatic switching control circuit has the following advantages:
1, after the utility model is detected by the line voltage of voltage detecting and controling circuit to input, is identified, by relay S2, power supply is automatically switched the circuit is directly connected with energization input between different voltage (as 110V and 220V), circuit is more simple, safe, reliably.
2, the utility model is after completing voltage detecting and circuit automatic switchover, by 1 pin control relay S1 adhesive of voltage detecting and controling circuit, the position of transfer relay S1, exit precharging state, and then voltage detecting and controling circuit stops the detection to line voltage, avoid still proceeding to detect after circuit normally works, effectively save electric power resource, add the useful life of voltage detecting and controling circuit.
Accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present utility model.
In figure, 1, energization input; 2, voltage detecting and controling circuit; 3, bridge rectifier; 4, power supply output; 5, precharging circuit.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this twin voltage automatic switching control circuit, comprise energization input 1, relay S2, bridge rectifier 3, voltage detecting and controling circuit 2, power supply output 4 and electrochemical capacitor C1 and electrochemical capacitor C2, electrochemical capacitor C1 and electrochemical capacitor C2 connects power supply output 4 and bridge rectifier 3 after connecting, energization input 1 is connected with the common port of relay S2, the normally-closed contact of relay S2 is connected with bridge rectifier 3, the normally opened contact of relay S2 is connected with the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, 3 pin of voltage detecting and controling circuit 2 connect power supply output 4 to detect the voltage at electrochemical capacitor C1 and electrochemical capacitor C2 two ends, the coil of 2 pin contact relay S2 of voltage detecting and controling circuit 2 is to realize according to the different switching carried out in relay S2 between normally opened contact and normally-closed contact of line voltage.
Specifically, the precharging circuit 5 for the protection of circuit is connected with between energization input 1 and relay S2.Between energization input 1 with relay S2, be connected precharging circuit 5, the surge current that restriction power supply connects moment can be played, exempt from destruction to protect electronic equipment.
Precharging circuit 5 comprises the resistance R1 be connected between energization input 1 and relay S2.
Preferably, precharging circuit 5 comprises the relay S1 be connected in parallel on resistance R1, and the coil-end of relay S1 is connected with 1 pin of voltage detecting and controling circuit 2.Resistance R1 is connected in parallel relay S1, this relay is after voltage detecting and controling circuit 2 detects line voltage, control relay S1 closes, be connected in parallel on this loop conducting on resistance R1, now voltage detecting and controling circuit 2 stops the detection to C1 and C2 both end voltage, avoid motor and still carrying out the detection to line voltage after normal work, save electric power resource.
Preferably, hand switch S0 is connected with between energization input 1 and precharging circuit 5.
Preferably, the two ends after electrochemical capacitor C1 and electrochemical capacitor C2 series connection are also parallel with load resistance R2.
Voltage detecting and controling circuit 2 comprises transformer, bleeder circuit, precise rectification circuit, LC filter circuit and single-chip microcomputer, power supply output 4 is connected to bleeder circuit by transformer, bleeder circuit connects precise rectification circuit, precise rectification circuit is connected with LC filter circuit, is connected with A/D change-over circuit between LC filter circuit and single-chip microcomputer.The voltage of power supply output 4 is by transformer, bleeder circuit, full-wave rectification, LC filtering, its High-frequency Interference harmonic wave of filtering, obtain the voltage with ripple that applicable A/D changes, and then flow to single-chip microcomputer and process, single-chip microcomputer switches according to the difference of the voltage of conveying and then control relay, thus ensures that the transformation of motor exports.
As another kind of technical scheme, voltage detecting and controling circuit 2 comprises comparator.
The physical circuit of this twin voltage automatic switching control circuit is: energization input 1 comprises a live wire input and a zero line input, bridge rectifier 3 comprises diode D1, diode D2, diode D3 and diode D4, diode D1 and diode D3 is connected in series, diode D2 and diode D4 is connected in series, the negative pole end of diode D1 is connected with the negative pole end of diode D2, the forward end of diode D3 is connected with the forward end of diode D4, zero line input is connected with the mid point of diode D1 and diode D3, live wire input, hand switch S0, resistance R1, the common port of relay S2 connects successively, resistance R1 is connected in parallel relay S1, the normally opened contact of relay S2 is connected with the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, the normally-closed contact of relay S2 is connected with the mid point of diode D2 and diode D4, the positive pole of electrochemical capacitor C1 is connected with the tie point of diode D1 and diode D2, the negative pole of electrochemical capacitor C2 is connected with the tie point of diode D3 and diode D4, electrochemical capacitor C1 and electrochemical capacitor C2 connects power supply output 4 after connecting, load resistance R2 is parallel with at the two ends of electrochemical capacitor C1 and electrochemical capacitor C2, 3 pin of voltage detecting and controling circuit 2 connect power supply output 4, for detecting the voltage at electrochemical capacitor C1 and electrochemical capacitor C2 two ends, the coil of 1 pin contact relay S1 of voltage detecting and controling circuit 2, position for control relay S1 switches, the coil of 2 pin contact relay S2 of voltage detecting and controling circuit 2, for the control relay S2 switching position when detecting that line voltage is different.
Specific works process is: after hand switch S0 conducting, circuit is connected to the civil power of outside input, now, relay S2 is in default conditions, circuit during default conditions is common rectification circuit and filter circuit, wherein electrochemical capacitor C1 and electrochemical capacitor C2 is filter circuit, and the alternating current of coming in is rectified filtering, and the default conditions of relay S1 are for being in open-circuit condition, 3 pin of voltage detecting and controling circuit 2 judge the magnitude of voltage after rectifying and wave-filtering, the i.e. voltage at the rear two ends of electrochemical capacitor C1 and electrochemical capacitor C2 series connection, if judged more than 200V, just judge that primary voltage is 200VAC AC system, relay S2 keeps original state not work, if judge lower than 200V, just judge that primary voltage is 110VAC AC system, 2 pin control relay S2 adhesives of voltage detecting and controling circuit 2, make relay S2 switching position, after switching, energization input 1 is directly connected to the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, form rectification multiple pressuring circuit, can by the twice of the ac voltage rectifier of input to input voltage, after completing above-mentioned work, 1 pin control relay S1 adhesive of voltage detecting and controling circuit 2, the position of transfer relay S1, exit precharging state, the i.e. detection of end voltage detection control circuit 2 pairs of line voltages, save electric power resource, can guarantee when 110VAC and 220VAC primary voltage by this twin voltage automatic switching control circuit, the voltage of rectifying and wave-filtering is all the voltage of 300V, ensure that the transformation of motor exports, and this control circuit annexation is simple, be easy to realize.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ energization input 1, voltage detecting and controling circuit 2, bridge rectifier 3, term such as power supply output 4, precharging circuit 5 etc. herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (7)
1. a twin voltage automatic switching control circuit, it is characterized in that, described twin voltage automatic switching control circuit comprises energization input (1), relay S2, bridge rectifier (3), voltage detecting and controling circuit (2), power supply output (4) and electrochemical capacitor C1 and electrochemical capacitor C2, described electrochemical capacitor C1 and electrochemical capacitor C2 connects power supply output (4) and bridge rectifier (3) after connecting, described energization input (1) is connected with the common port of relay S2, the normally-closed contact of relay S2 is connected with bridge rectifier (3), the normally opened contact of relay S2 is connected with the mid point of electrochemical capacitor C1 and electrochemical capacitor C2, 3 pin of described voltage detecting and controling circuit (2) connect power supply output (4) to detect the voltage at electrochemical capacitor C1 and electrochemical capacitor C2 two ends, the coil of 2 pin contact relay S2 of described voltage detecting and controling circuit (2) is to realize according to the different switching carried out in relay S2 between normally opened contact and normally-closed contact of line voltage.
2. twin voltage automatic switching control circuit according to claim 1, is characterized in that, is connected with the precharging circuit (5) for the protection of circuit between described energization input (1) and relay S2.
3. twin voltage automatic switching control circuit according to claim 2, is characterized in that, described precharging circuit (5) comprises the resistance R1 be connected between energization input (1) and relay S2.
4. twin voltage automatic switching control circuit according to claim 3, it is characterized in that, described precharging circuit (5) also comprises the relay S1 be connected in parallel on resistance R1, and the coil-end of described relay S1 is connected with 1 pin of voltage detecting and controling circuit (2).
5. twin voltage automatic switching control circuit according to claim 2, is characterized in that, is connected with hand switch S0 between described energization input (1) and precharging circuit (5).
6. twin voltage automatic switching control circuit according to claim 5, is characterized in that, the two ends after described electrochemical capacitor C1 and electrochemical capacitor C2 connects also are parallel with load resistance R2.
7. twin voltage automatic switching control circuit according to claim 1, it is characterized in that, described voltage detecting and controling circuit (2) comprises transformer, bleeder circuit, precise rectification circuit, LC filter circuit and single-chip microcomputer, described power supply output (4) is connected to bleeder circuit by transformer, bleeder circuit connects precise rectification circuit, precise rectification circuit is connected with LC filter circuit, is connected with A/D change-over circuit between LC filter circuit and single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529555.0U CN204103590U (en) | 2014-09-15 | 2014-09-15 | A kind of twin voltage automatic switching control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529555.0U CN204103590U (en) | 2014-09-15 | 2014-09-15 | A kind of twin voltage automatic switching control circuit |
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| CN204103590U true CN204103590U (en) | 2015-01-14 |
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| CN201420529555.0U Expired - Fee Related CN204103590U (en) | 2014-09-15 | 2014-09-15 | A kind of twin voltage automatic switching control circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958489A (en) * | 2016-06-24 | 2016-09-21 | 宁波音王电声股份有限公司 | AC voltage automatic switching circuit capable of replacing mechanical switch |
| CN106141376A (en) * | 2016-08-24 | 2016-11-23 | 台州林轩科技有限公司 | The industrial frequency rectifying filtering circuitry of twin voltage inverter arc welding machine |
| CN106270943A (en) * | 2016-10-17 | 2017-01-04 | 浙江普尔尼机电有限公司 | A kind of twin voltage input automatic switching control circuit being applied to electric welding machine |
| CN108123607A (en) * | 2018-01-03 | 2018-06-05 | 常州同惠电子股份有限公司 | Alternating current automatic switching control equipment based on voltage method |
| CN110336389A (en) * | 2018-03-30 | 2019-10-15 | Tdk株式会社 | Wireless receiving device and Wireless power transmission system |
-
2014
- 2014-09-15 CN CN201420529555.0U patent/CN204103590U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958489A (en) * | 2016-06-24 | 2016-09-21 | 宁波音王电声股份有限公司 | AC voltage automatic switching circuit capable of replacing mechanical switch |
| CN106141376A (en) * | 2016-08-24 | 2016-11-23 | 台州林轩科技有限公司 | The industrial frequency rectifying filtering circuitry of twin voltage inverter arc welding machine |
| CN106270943A (en) * | 2016-10-17 | 2017-01-04 | 浙江普尔尼机电有限公司 | A kind of twin voltage input automatic switching control circuit being applied to electric welding machine |
| CN108123607A (en) * | 2018-01-03 | 2018-06-05 | 常州同惠电子股份有限公司 | Alternating current automatic switching control equipment based on voltage method |
| CN110336389A (en) * | 2018-03-30 | 2019-10-15 | Tdk株式会社 | Wireless receiving device and Wireless power transmission system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151202 Address after: Taizhou City, Zhejiang province 318000 Jiaojiang Xiachen street, Airport Road No. 1 Patentee after: ZHEJIANG GEMSY MECHANICAL & ELECTRICAL CO., LTD Address before: 318000, No. 638, East Ring Road, Taizhou Economic Development Zone, Jiaojiang District, Zhejiang, Taizhou Patentee before: Zhejiang Gemsy Mechanical and Electrical Co., Ltd. |
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| 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: 20150114 Termination date: 20180915 |