CN203813686U - Voltage transformation circuit used for mahjong - Google Patents
Voltage transformation circuit used for mahjong Download PDFInfo
- Publication number
- CN203813686U CN203813686U CN201420219530.0U CN201420219530U CN203813686U CN 203813686 U CN203813686 U CN 203813686U CN 201420219530 U CN201420219530 U CN 201420219530U CN 203813686 U CN203813686 U CN 203813686U
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- China
- Prior art keywords
- voltage
- interface
- relay
- mahjong
- rectification unit
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- Expired - Fee Related
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Abstract
The utility model relates to a voltage transformation circuit used for a mahjong. The circuit is connected with a mahjong control single-chip microcomputer. The circuit comprises a rectification unit, a relay, a voltage division sampling resistor, a potentiometer, an AC output interface, and an AC voltage transformation interface. The input end of the rectification unit is connected with an AC power supply. The output ends of the rectification unit are respectively connected with the input end of a relay coil and the voltage division sampling resistor. The voltage division sampling resistor is connected with ground through the potentiometer. The output end of the relay coil is connected with the mahjong control single-chip microcomputer. An armature of the relay, the AC voltage transformation interface, and the AC output interface are connected in sequence, so as to form a controlled circuit. Beneficial effects are that through arranging a movable contact and a fixed contact respectively corresponding to the relay with a high-voltage AC input interface and a low-voltage AC input interface, a function that working voltage of the mahjong changes in an adaptive manner with sampling voltage, thereby effectively improving reliability of the mahjong.
Description
Technical field
The present invention relates to mahjong machine circuit design, relate in particular to a kind of transforming circuit for mahjong machine.
Background technology
Existing mahjong machine is when local parts operation troubles, the situation that there will be operating voltage to decline, can affect the normal operation of mahjong machine, and then reduce the reliability of mahjong machine, therefore a kind of can providing according to the circuit of the real-time voltage change input ac voltage size of mahjong machine work be provided.
Summary of the invention
The object of the invention is to overcome the deficiency of above prior art, and a kind of transforming circuit for mahjong machine is provided, and specifically has following technical scheme to realize:
The described transforming circuit for mahjong machine, be connected with mahjong machine control single chip computer, comprise rectification unit, relay, dividing potential drop sampling resistor, potentiometer, exchange output interface and AC transformation interface, the input of described rectification unit connects AC power, the output of rectification unit connects respectively input and the dividing potential drop sampling resistor of described relay coil, described dividing potential drop sampling resistor is by described potentiometer ground connection, the output of described relay coil connects described mahjong machine control single chip computer, the armature of described relay, AC transformation interface and interchange output interface connect in turn, form controlled loop.
The further design of described transforming circuit is, in described controlled loop, the fixed contact of the described armature of relay is connected with the low-voltage interface of AC transformation interface, and the moving contact of described armature is connected with the high voltage interface of AC transformation interface.
The further design of described transforming circuit is, described rectification unit is rectifier circuit.
The further design of described transforming circuit is, described potentiometer is by certain value grounding through resistance.
The further design of described transforming circuit is, the voltage of described AC power is 12V.
Advantage of the present invention is as follows:
The transforming circuit for mahjong machine that the utility model provides, by the dynamic and static contact operating voltage that the relay of corresponding high and low pressure alternating current input interface is realized mahjong machine is respectively set, with sampled voltage, carry out the function of adaptive change, effectively improved the reliability of mahjong machine.
Accompanying drawing explanation
The transforming circuit for mahjong machine that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, the present invention program is elaborated.
The transforming circuit for mahjong machine that the present embodiment provides, is connected with mahjong machine control single chip computer.This main circuit will, by rectification unit, relay, dividing potential drop sampling resistor, potentiometer, exchange output interface and AC transformation interface and form.The input of rectification unit connects AC power, and in the present embodiment, the magnitude of voltage of AC power is 12V.The output of rectification unit connects respectively input and the dividing potential drop sampling resistor of relay coil.Dividing potential drop sampling resistor is by potentiometer ground connection, and the output of relay coil connects mahjong machine control single chip computer, and the armature of relay, AC transformation interface and interchange output interface connect in turn, form controlled loop.In the present embodiment, rectification unit is rectifier circuit.Potentiometer is by certain value grounding through resistance.
Further, in controlled loop, the fixed contact of the armature of relay is connected with the low-voltage interface of AC transformation interface.The moving contact of armature is connected with the high voltage interface of AC transformation interface.
This circuit adopts bleeder circuit after transformer alternating 12V rectification is carried out to real-time sampling, and read the voltage data of corresponding single-chip microcomputer corresponding ports, if voltage reduces suddenly relay coil through overcurrent, produce magnetic force, pull the armature of relay to moving contact, mahjong machine just switches to high pressure 130V pattern like this.When if voltage is normal, the armature of relay, all the time in fixed contact position, keeps 110V normally to export, and has realized the switching of the 2 road Voltage-outputs of 110V and 130V.
Claims (5)
1. the transforming circuit for mahjong machine, be connected with mahjong machine control single chip computer, it is characterized in that comprising rectification unit, relay, dividing potential drop sampling resistor, potentiometer, exchange output interface and AC transformation interface, the input of described rectification unit connects AC power, the output of rectification unit connects respectively input and the dividing potential drop sampling resistor of described relay coil, described dividing potential drop sampling resistor is by described potentiometer ground connection, the output of described relay coil connects described mahjong machine control single chip computer, the armature of described relay, AC transformation interface and interchange output interface connect in turn, form controlled loop.
2. transforming circuit according to claim 1, is characterized in that in described controlled loop, and the fixed contact of the described armature of relay is connected with the low-voltage interface of AC transformation interface, and the moving contact of described armature is connected with the high voltage interface of AC transformation interface.
3. transforming circuit according to claim 1, is characterized in that described rectification unit is rectifier circuit.
4. transforming circuit according to claim 1, is characterized in that described potentiometer is by certain value grounding through resistance.
5. transforming circuit according to claim 1, the voltage that it is characterized in that described AC power is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219530.0U CN203813686U (en) | 2014-05-04 | 2014-05-04 | Voltage transformation circuit used for mahjong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219530.0U CN203813686U (en) | 2014-05-04 | 2014-05-04 | Voltage transformation circuit used for mahjong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813686U true CN203813686U (en) | 2014-09-03 |
Family
ID=51452385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420219530.0U Expired - Fee Related CN203813686U (en) | 2014-05-04 | 2014-05-04 | Voltage transformation circuit used for mahjong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813686U (en) |
-
2014
- 2014-05-04 CN CN201420219530.0U patent/CN203813686U/en not_active Expired - Fee Related
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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: 20140903 Termination date: 20150504 |
|
| EXPY | Termination of patent right or utility model |