CN202197211U - AC input voltage automatic switching circuit - Google Patents
AC input voltage automatic switching circuit Download PDFInfo
- Publication number
- CN202197211U CN202197211U CN2011202380488U CN201120238048U CN202197211U CN 202197211 U CN202197211 U CN 202197211U CN 2011202380488 U CN2011202380488 U CN 2011202380488U CN 201120238048 U CN201120238048 U CN 201120238048U CN 202197211 U CN202197211 U CN 202197211U
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- CN
- China
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- voltage
- pin
- resistance
- avs1acp08
- special chip
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Abstract
The utility model relates to an AC input voltage automatic switching circuit, which belongs to the power supply field. The AC input voltage automatic switching circuit comprises an AVS1ACP08 voltage transition special chip U1, a bidirectional silicon controlled rectifier Q1, a rectifier bridge D1, resistors R1 to R8, a rectifier diode D2, a plastic membrane capacitor C4 and aluminum electrolytic capacitors C1 to C3. When an input voltage is 110 V, the AVS1ACP08 voltage transition special chip U1 provides a trigger level for a fifth pin, and the bidirectional silicon controlled rectifier Q1 is conducted; when the input voltage is 220 V, the AVS1ACP08 voltage transition special chip U1 detects the voltage range through an eighth pin, a low level is output at the fifth pin of the AVS1ACP08 voltage transition special chip U1, and the bidirectional silicon controlled rectifier Q1 is not conducted. In the utility model, no complex circuit is employed, the whole efficiency is not influenced, and voltage input at different region in the world can be automatically adapted under the condition that resource is not wasted.
Description
Technical field
The utility model relates to the supply unit field, at length says it is a kind of AC-input voltage automatic switch-over circuit.
Background technology
As everyone knows: present input voltage kind all over the world is a lot; Roughly divide two kinds of 110V and 220V, because two kinds of voltage difference are bigger, in the time of the international series products of design; A lot of producers have adopted a toggle switch, are used for the kind of manual switchover input voltage.If but in practical operation operator's misoperation or operating mistake, can cause the damage of electronic circuit, bring certain economic loss.
Summary of the invention
The purpose of the utility model just is to overcome the deficiency of prior art; Provide a kind of and discern the scope of input voltage automatically,, do not influence overall efficiency not adopting complicated circuit with the electronic circuit mode; When not wasting resource, adapt to the voltage input of different regions, the world automatically.
The utility model adopts following technical solution: a kind of AC-input voltage automatic switch-over circuit; It is characterized in that: AC-input voltage ACBRGONE connects 1 pin of rectifier bridge D1; AC-input voltage ACBRGTWO connects 3 pin of rectifier bridge D1, and 2 pin of rectifier bridge D1 meet the power supply ground GND of output dc voltage, and 4 pin of rectifier bridge D1 connect the power supply VCC of output dc voltage; The power supply VCC of the termination output dc voltage of alminium electrolytic condenser C1; The end of another termination alminium electrolytic condenser C2, the power supply ground GND of another termination output dc voltage of alminium electrolytic condenser C2, the power supply VCC of a termination output dc voltage of resistance R 7; Resistance R 7 other end connecting resistance R8 one end; The power supply ground GND of another termination output dc voltage of resistance R 8, the mid point of alminium electrolytic condenser C1 and alminium electrolytic condenser C2 meets network input point DBLJMP, and the mid point of resistance R 7 and resistance R 8 is connected network input point DBLJMP; 3 pin of rectifier bridge D1 connect resistance R 1 one ends; Resistance R 1 other end connects 8 pin of AVS1ACP08 voltage transitions special chip U1, and the other end of resistance R 1 connects an end of resistance R 2, and the other end of resistance R 2 connects 1 pin of AVS1ACP08 voltage transitions special chip U1; One end of resistance R 1 connects the negative pole of rectifier diode D2 simultaneously; The anode of rectifier diode D2 connects an end of resistance R 3, and the other end of resistance R 3 connects an end of resistance R 4, and the other end of resistance R 4 connects 2 pin of AVS1ACP08 voltage transitions special chip U1; 4 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through alminium electrolytic condenser C3; 2 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through plastic film capacitor C 4, and 2 pin of AVS1ACP08 voltage transitions special chip U1 are connected to 3 pin of AVS1ACP08 voltage transitions special chip U1 simultaneously through resistance R 5, and 7 pin of AVS1ACP08 voltage transitions special chip U1 directly connect 1 pin of AVS1ACP08 voltage transitions special chip U1; 5 pin of AVS1ACP08 voltage transitions special chip U1 connect the trigger electrode of bidirectional triode thyristor Q1 through resistance R 6; The input of bidirectional triode thyristor Q1 meets network input point DBLJMP, and another input of bidirectional triode thyristor Q1 meets AC-input voltage ACBRGONE, and 4 pin of AVS1ACP08 voltage transitions special chip U1 connect AC-input voltage ACBRGONE.
The beneficial effect of the utility model is, not adopting complicated circuit, do not influence overall efficiency, when not wasting resource, adapts to the voltage input of different regions, the world automatically.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the schematic diagram of the utility model.
U1. voltage transitions special chip among the figure, Q1. bidirectional triode thyristor, D1. rectifier bridge; R1～R8. resistance, D2. rectifier diode, C4. plastic film electric capacity; C1～C3. alminium electrolytic condenser, ACBRGONE. AC-input voltage, ACBRGTWO. AC-input voltage; DBLJMP. network input point, the power supply of VCC. output dc voltage, the power supply ground of GND. output dc voltage.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, to help the content of understanding the utility model.
As shown in Figure 1; The utility model AC-input voltage ACBRGONE connects 1 pin of rectifier bridge D1; AC-input voltage ACBRGTWO connects 3 pin of rectifier bridge D1, and 2 pin of rectifier bridge D1 meet the power supply ground GND of output dc voltage, and 4 pin of rectifier bridge D1 connect the power supply VCC of output dc voltage; The power supply VCC of the termination output dc voltage of alminium electrolytic condenser C1; The end of another termination alminium electrolytic condenser C2, the power supply ground GND of another termination output dc voltage of alminium electrolytic condenser C2, the power supply VCC of a termination output dc voltage of resistance R 7; Resistance R 7 other end connecting resistance R8 one end; The power supply ground GND of another termination output dc voltage of resistance R 8, the mid point of alminium electrolytic condenser C1 and alminium electrolytic condenser C2 meets network input point DBLJMP, and the mid point of resistance R 7 and resistance R 8 is connected network input point DBLJMP; 3 pin of rectifier bridge D1 connect resistance R 1 one ends; Resistance R 1 other end connects 8 pin of AVS1ACP08 voltage transitions special chip U1, and the other end of resistance R 1 connects an end of resistance R 2, and the other end of resistance R 2 connects 1 pin of AVS1ACP08 voltage transitions special chip U1; One end of resistance R 1 connects the negative pole of rectifier diode D2 simultaneously; The anode of rectifier diode D2 connects an end of resistance R 3, and the other end of resistance R 3 connects an end of resistance R 4, and the other end of resistance R 4 connects 2 pin of AVS1ACP08 voltage transitions special chip U1; 4 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through alminium electrolytic condenser C3; 2 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through plastic film capacitor C 4, and 2 pin of AVS1ACP08 voltage transitions special chip U1 are connected to 3 pin of AVS1ACP08 voltage transitions special chip U1 simultaneously through resistance R 5, and 7 pin of AVS1ACP08 voltage transitions special chip U1 directly connect 1 pin of AVS1ACP08 voltage transitions special chip U1; 5 pin of AVS1ACP08 voltage transitions special chip U1 connect the trigger electrode of bidirectional triode thyristor Q1 through resistance R 6; The input of bidirectional triode thyristor Q1 meets network input point DBLJMP, and another input of bidirectional triode thyristor Q1 meets AC-input voltage ACBRGONE, and 4 pin of AVS1ACP08 voltage transitions special chip U1 connect AC-input voltage ACBRGONE.
Insert AVS1ACP08 voltage transitions special chip U1 after the voltage process resistance R 1 of the utility model AC-input voltage ACBRGTWO and resistance R 2 dividing potential drops; The inner scope of judging input voltage automatically of AVS1ACP08 voltage transitions special chip U1; AVS1ACP08 voltage transitions special chip U1 gives the 5th pin one triggering level when input voltage is 110V; Bidirectional triode thyristor Q1 conducting; Be equivalent to network input point DBLJMP and AC-input voltage ACBRGONE termination, promptly rectifier bridge D1 gives alminium electrolytic condenser C2 charging through the halfwave rectifier mode; Do not export the power supply VCC voltage of output dc voltage after alminium electrolytic condenser C1 and the stack of alminium electrolytic condenser C2 voltage; When input voltage is 220V; AVS1ACP08 voltage transitions special chip U1 detects voltage range through 8 pin; 5 pin output low levels at AVS1ACP08 voltage transitions special chip U1; Not conducting of bidirectional triode thyristor Q1, rectifier bridge D1 gives alminium electrolytic condenser C1 and alminium electrolytic condenser C2 charging through the all-wave mode.The output voltage that dual mode finally obtains is the same.
Claims (1)
1. AC-input voltage automatic switch-over circuit; It is characterized in that: AC-input voltage ACBRGONE connects 1 pin of rectifier bridge D1; AC-input voltage ACBRGTWO connects 3 pin of rectifier bridge D1, and 2 pin of rectifier bridge D1 meet the power supply ground GND of output dc voltage, and 4 pin of rectifier bridge D1 connect the power supply VCC of output dc voltage; The power supply VCC of the termination output dc voltage of alminium electrolytic condenser C1; The end of another termination alminium electrolytic condenser C2, the power supply ground GND of another termination output dc voltage of alminium electrolytic condenser C2, the power supply VCC of a termination output dc voltage of resistance R 7; Resistance R 7 other end connecting resistance R8 one end; The power supply ground GND of another termination output dc voltage of resistance R 8, the mid point of alminium electrolytic condenser C1 and alminium electrolytic condenser C2 meets network input point DBLJMP, and the mid point of resistance R 7 and resistance R 8 is connected network input point DBLJMP; 3 pin of rectifier bridge D1 connect resistance R 1 one ends; Resistance R 1 other end connects 8 pin of AVS1ACP08 voltage transitions special chip U1, and the other end of resistance R 1 connects an end of resistance R 2, and the other end of resistance R 2 connects 1 pin of AVS1ACP08 voltage transitions special chip U1; One end of resistance R 1 connects the negative pole of rectifier diode D2 simultaneously; The anode of rectifier diode D2 connects an end of resistance R 3, and the other end of resistance R 3 connects an end of resistance R 4, and the other end of resistance R 4 connects 2 pin of AVS1ACP08 voltage transitions special chip U1; 4 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through alminium electrolytic condenser C3; 2 pin of AVS1ACP08 voltage transitions special chip U1 are received 1 pin of AVS1ACP08 voltage transitions special chip U1 through plastic film capacitor C 4, and 2 pin of AVS1ACP08 voltage transitions special chip U1 are connected to 3 pin of AVS1ACP08 voltage transitions special chip U1 simultaneously through resistance R 5, and 7 pin of AVS1ACP08 voltage transitions special chip U1 directly connect 1 pin of AVS1ACP08 voltage transitions special chip U1; 5 pin of AVS1ACP08 voltage transitions special chip U1 connect the trigger electrode of bidirectional triode thyristor Q1 through resistance R 6; The input of bidirectional triode thyristor Q1 meets network input point DBLJMP, and another input of bidirectional triode thyristor Q1 meets AC-input voltage ACBRGONE, and 4 pin of AVS1ACP08 voltage transitions special chip U1 connect AC-input voltage ACBRGONE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202380488U CN202197211U (en) | 2011-07-07 | 2011-07-07 | AC input voltage automatic switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202380488U CN202197211U (en) | 2011-07-07 | 2011-07-07 | AC input voltage automatic switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202197211U true CN202197211U (en) | 2012-04-18 |
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ID=45952110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202380488U Expired - Fee Related CN202197211U (en) | 2011-07-07 | 2011-07-07 | AC input voltage automatic switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202197211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720845B (en) * | 2014-12-02 | 2018-09-25 | 苏州三星电子有限公司 | The switching power circuit and frequency-conversion domestic electric appliances of Width funtion input |
-
2011
- 2011-07-07 CN CN2011202380488U patent/CN202197211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720845B (en) * | 2014-12-02 | 2018-09-25 | 苏州三星电子有限公司 | The switching power circuit and frequency-conversion domestic electric appliances of Width funtion input |
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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 |
Granted publication date: 20120418 Termination date: 20140707 |
|
| EXPY | Termination of patent right or utility model |