CN203133148U - 100V/220V voltage arbiter - Google Patents
100V/220V voltage arbiter Download PDFInfo
- Publication number
- CN203133148U CN203133148U CN 201320158499 CN201320158499U CN203133148U CN 203133148 U CN203133148 U CN 203133148U CN 201320158499 CN201320158499 CN 201320158499 CN 201320158499 U CN201320158499 U CN 201320158499U CN 203133148 U CN203133148 U CN 203133148U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- pin
- termination
- sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses 110V/220V voltage arbiter comprising a voltage reduction transformer, a rectification filter circuit, a voltage stabilization circuit, a voltage sampling circuit, a voltage comparison circuit, and two LED indication lamps. An input end of the voltage reduction transformer is connected with a detected power supply, and an output end is connected with an input end of the rectification filter circuit. An input end of the voltage stabilization circuit is connected with an output end of the rectification filter circuit, and an output end is connected with a power supply input end of the voltage comparison circuit. An input end of the voltage sampling circuit is connected with an output end of the rectification filter circuit, and a sampling signal output end is connected with a voltage sampling signal input end of the voltage comparison circuit. The two LED indication lamps are respectively connected with two control signal output ends of the voltage comparison circuit. The 100V/220V voltage arbiter is advantageous in that the processional knowledge is not a requirement for the user; the use is convenient, fast, and safe; the measuring result is obvious; the 100V/220V voltage arbiter can be used in occasions rquiring the 110 V power supply and the 220V power supply at the same time; the voltage arbiter can be used for a direct and fast determination of the socket voltage, therefore the burnout or the malfunction of the device caused by the unexpected input voltage cannot occur.
Description
[technical field]
The utility model relates to voltage detecting circuit, relates in particular to a kind of 110V/220V voltage checker.
[background technology]
The place that has 110V, 220V voltage source at the same time confirms that generally the method for supply voltage is to use multimeter to measure.Multimeter requires the user that certain professional knowledge is arranged, the danger that the improper use meeting causes the person to get an electric shock, and multimeter is a kind of comprehensive time-measuring gauge table, need arrange during use, measurement result is directly perceived inadequately, can bring some troubles to the user.
[summary of the invention]
The technical problems to be solved in the utility model provides does not a kind ofly have to the user that professional knowledge requires, easy to use, quick, safety, the 110V/220V voltage checker of intuitive measurement results.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of 110V/220V voltage checker, comprise step-down transformer, current rectifying and wave filtering circuit, mu balanced circuit, voltage sampling circuit, voltage comparator circuit and two LED light, the input end of step-down transformer accepts to survey power supply, the input end of output termination current rectifying and wave filtering circuit; The output terminal of the input termination current rectifying and wave filtering circuit of mu balanced circuit, the power input of output termination voltage comparator circuit; The output terminal of the input termination current rectifying and wave filtering circuit of voltage sampling circuit, the voltage sampling signal input end of sampled signal output termination voltage comparator circuit; Two LED light connect two control signal output terminals of voltage comparator circuit respectively.
Above-described 110V/220V voltage checker, current rectifying and wave filtering circuit comprise commutation diode and first filter capacitor, and the anode of commutation diode connects first output terminal of step-down transformer, and negative electrode is as the positive pole of rectification filter circuit output end; The anode of one termination commutation diode of first filter capacitor, second output terminal of another termination step-down transformer.
Above-described 110V/220V voltage checker, mu balanced circuit comprises three terminal integrated voltage stabilizer and second filter capacitor, the input pin of three terminal integrated voltage stabilizer connects the positive pole of rectification filter circuit output end, grounding leg connects the negative pole of rectification filter circuit output end, and output pin connects the power input of voltage comparator circuit; The output pin of one termination three terminal integrated voltage stabilizer of second filter capacitor, the grounding leg of another termination three terminal integrated voltage stabilizer.
Above-described 110V/220V voltage checker, voltage sampling circuit comprises first sampling resistor and second sampling resistor, the positive pole of first sampling resistor and second sampling resistor serial connection back, one termination rectification filter circuit output end, the negative pole of another termination rectification filter circuit output end; Tie point between first sampling resistor and second sampling resistor is the sampled signal output terminal of voltage sampling circuit.
Above-described 110V/220V voltage checker, first sampling resistor are adjustable resistance.
Above-described 110V/220V voltage checker, voltage comparator circuit are the 74L504 chip, and the 1st pin of 74L504 chip is the voltage sampling signal input end, the 2nd pin is the first control signal output terminal, the 4th pin is the second control signal output terminal, and the 14th pin is power input, the 7th pin ground connection.
Above-described 110V/220V voltage checker comprises first current-limiting resistance and second current-limiting resistance, and the negative electrode of two LED light connects the negative pole of rectification filter circuit output end respectively; The anode of first LED light connects the 2nd pin of 74L504 chip by first current-limiting resistance, and the anode of second LED light connects the 4th pin of 74L504 chip by second current-limiting resistance.
The utility model 110V/220V voltage checker does not have professional knowledge requirement, easy to use, quick, safety to the user, intuitive measurement results, the place that has 110V, 220V voltage source at the same time, use voltage checker to differentiate socket voltage directly, fast, avoid because of input voltage be not inconsistent cause equipment burnout or work undesired.
[description of drawings]
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the theory diagram of the utility model 110V/220V voltage checker embodiment.
Fig. 2 is the circuit diagram of the utility model 110V/220V voltage checker embodiment.
[embodiment]
The principle of the utility model 110V/220V voltage checker embodiment as shown in Figure 1, comprise step-down transformer, current rectifying and wave filtering circuit, mu balanced circuit, voltage sampling circuit, voltage comparator circuit and two LED light, the input end of step-down transformer accepts to survey power supply, the input end of output termination current rectifying and wave filtering circuit; The output terminal of the input termination current rectifying and wave filtering circuit of mu balanced circuit, the power input of output termination voltage comparator circuit; The output terminal of the input termination current rectifying and wave filtering circuit of voltage sampling circuit, the voltage sampling signal input end of sampled signal output termination voltage comparator circuit; Two LED light connect two control signal output terminals of voltage comparator circuit respectively.
The circuit of the utility model 110V/220V voltage checker embodiment is as shown in Figure 2: current rectifying and wave filtering circuit comprises commutation diode D1 and filter capacitor C1 and C2, the anode of commutation diode D1 connects first output terminal of step-down transformer T, and negative electrode is as the positive pole of rectification filter circuit output end; The anode of the termination commutation diode D1 of filter capacitor C1 and C2, second output terminal of another termination step-down transformer T, second output terminal of step-down transformer T is the negative pole of rectification filter circuit output end.
Mu balanced circuit comprises three terminal integrated voltage stabilizer IC1(L7805) and filter capacitor C3 and C4, the input pin of three terminal integrated voltage stabilizer IC1 connects the negative electrode of commutation diode D1, grounding leg connects second output terminal of step-down transformer T, output pin connects the power input (the 14th pin of 74L504 chip) of voltage comparator circuit, to chip IC 2 output+5V voltages.The output pin of the termination three terminal integrated voltage stabilizer IC1 of filter capacitor C3 and C4, the grounding leg of another termination three terminal integrated voltage stabilizer IC1.
Voltage sampling circuit comprises sampling resistor R1 and sampling resistor R2, the positive pole of sampling resistor R1 and sampling resistor R2 serial connection back R1 one termination rectification filter circuit output end, the negative pole of R2 one termination rectification filter circuit output end.Tie point A between sampling resistor R1 and the sampling resistor R2 is the sampled signal output terminal of voltage sampling circuit.
Wherein, sampling resistor R1 is adjustable resistance.
Voltage comparator circuit is 74L504 chip (IC2), and the 1st pin of 74L504 chip is the voltage sampling signal input end, and the 2nd pin is the first control signal output terminal, and the 4th pin is the second control signal output terminal, and the 14th pin is power input, the 7th pin ground connection.
The negative electrode of pilot lamp LED1 and LED2 connects the negative pole of rectification filter circuit output end respectively.Pilot lamp LED1 is the green LED pilot lamp, and the anode of LED1 connects the 2nd pin of 74L504 chip by current-limiting resistance R3, and pilot lamp LED2 is the red LED pilot lamp, and the anode of LED2 connects the 4th pin of 74L504 chip by current-limiting resistance R4.
In the present embodiment, voltage comparator circuit is the 5V power supply for (IC2) 74L504 the 14th pin, and 7 pin are ground connection, and 1,3 pin are that not gate input end, 2,4 pin are that non-gate output terminal, other pin do not use.Regulate variable resistor R1, when the input voltage of voltage checker is 220V, make the tie point A place between resistance R 1 and the R2 be high level; When the input voltage of voltage checker is 110V, make the A point be low level.
When the input voltage of voltage checker was 110V, the A point was low level, and the A point is connected with IC2 74L,504 1 pin, and 1 pin is input as low level, and 2 pin are output as high level, and it is 110V that green LED LED1 lights the current supply voltage of indication.
Because this moment, 2,3 pin of chip L74L504 are connected and are all high level, and 4 pin are output as low level, and red light emitting diodes LED2 does not work.
When the input voltage of voltage checker was 220V, the A point was high level, and the A point is connected with IC2 74L,504 1 pin, 1 pin be input as high level, chip L74L504 2 pin are output as low level, green LED LED1 does not work.Because IC2 L74L504 2,3 pin are connected and are all low level, 4 pin are output as high level, and it is 220V that red light emitting diodes LED2 lights the current supply voltage of indication.
The utility model 110V/220V voltage checker does not have professional knowledge requirement, easy to use, quick, safety to the user, intuitive measurement results, the workshop or other place that have 110V, 220V voltage source at the same time, can be under the situation that does not need professional survey instrument quick, accurate, the safe supply voltage that determines.Avoid not damaging consumer because voltage is inconsistent.
Claims (7)
1. 110V/220V voltage checker, it is characterized in that, comprise step-down transformer, current rectifying and wave filtering circuit, mu balanced circuit, voltage sampling circuit, voltage comparator circuit and two LED light, the input end of step-down transformer accepts to survey power supply, the input end of output termination current rectifying and wave filtering circuit; The output terminal of the input termination current rectifying and wave filtering circuit of mu balanced circuit, the power input of output termination voltage comparator circuit; The output terminal of the input termination current rectifying and wave filtering circuit of voltage sampling circuit, the voltage sampling signal input end of sampled signal output termination voltage comparator circuit; Two LED light connect two control signal output terminals of voltage comparator circuit respectively.
2. 110V/220V voltage checker according to claim 1, it is characterized in that, current rectifying and wave filtering circuit comprises commutation diode and first filter capacitor, and the anode of commutation diode connects first output terminal of step-down transformer, and negative electrode is as the positive pole of rectification filter circuit output end; The anode of one termination commutation diode of first filter capacitor, second output terminal of another termination step-down transformer.
3. 110V/220V voltage checker according to claim 1, it is characterized in that, mu balanced circuit comprises three terminal integrated voltage stabilizer and second filter capacitor, the input pin of three terminal integrated voltage stabilizer connects the positive pole of rectification filter circuit output end, grounding leg connects the negative pole of rectification filter circuit output end, and output pin connects the power input of voltage comparator circuit; The output pin of one termination three terminal integrated voltage stabilizer of second filter capacitor, the grounding leg of another termination three terminal integrated voltage stabilizer.
4. 110V/220V voltage checker according to claim 1, it is characterized in that, voltage sampling circuit comprises first sampling resistor and second sampling resistor, the positive pole of first sampling resistor and second sampling resistor serial connection back, one termination rectification filter circuit output end, the negative pole of another termination rectification filter circuit output end; Tie point between first sampling resistor and second sampling resistor is the sampled signal output terminal of voltage sampling circuit.
5. 110V/220V voltage checker according to claim 4 is characterized in that, first sampling resistor is adjustable resistance.
6. 110V/220V voltage checker according to claim 1, it is characterized in that, voltage comparator circuit is the 74L504 chip, the 1st pin of 74L504 chip is the voltage sampling signal input end, the 2nd pin is the first control signal output terminal, the 4th pin is the second control signal output terminal, and the 14th pin is power input, the 7th pin ground connection.
7. 110V/220V voltage checker according to claim 6 is characterized in that, comprises first current-limiting resistance and second current-limiting resistance, and the negative electrode of two LED light connects the negative pole of rectification filter circuit output end respectively; The anode of first LED light connects the 2nd pin of 74L504 chip by first current-limiting resistance, and the anode of second LED light connects the 4th pin of 74L504 chip by second current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158499 CN203133148U (en) | 2013-04-01 | 2013-04-01 | 100V/220V voltage arbiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158499 CN203133148U (en) | 2013-04-01 | 2013-04-01 | 100V/220V voltage arbiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133148U true CN203133148U (en) | 2013-08-14 |
Family
ID=48941119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158499 Expired - Fee Related CN203133148U (en) | 2013-04-01 | 2013-04-01 | 100V/220V voltage arbiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822654A (en) * | 2014-02-10 | 2014-05-28 | 深圳怡化电脑股份有限公司 | U-shaped sensor detection apparatus and U-shaped sensor detection method |
| CN109039106A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of railway locomotive radio station test power supply and its implementation |
-
2013
- 2013-04-01 CN CN 201320158499 patent/CN203133148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822654A (en) * | 2014-02-10 | 2014-05-28 | 深圳怡化电脑股份有限公司 | U-shaped sensor detection apparatus and U-shaped sensor detection method |
| CN109039106A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of railway locomotive radio station test power supply and its implementation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203675387U (en) | LED drive circuit for providing TRIAC holding current by using controllable current source | |
| CN206321697U (en) | A kind of over-voltage detection circuit and switching power circuit | |
| CN203133148U (en) | 100V/220V voltage arbiter | |
| CN203775050U (en) | Adjustable DC regulated power supply with Zener diode test function | |
| CN203690888U (en) | Electric leakage protection plug | |
| CN203502448U (en) | Simple signal wave generator | |
| CN102933005A (en) | Circuit for LED constant current power supply | |
| CN102375084A (en) | Voltage stabilizing diode detection circuit | |
| CN204794736U (en) | Novel half -wave rectifier circuit | |
| CN203466737U (en) | Safe low-voltage AC/DC power supply input pen | |
| CN102958248B (en) | A kind of LED illumination circuit | |
| CN205232515U (en) | Light -emitting diode (LED) driving circuit | |
| CN211785879U (en) | Low-power-consumption universal on-off tester | |
| CN204314369U (en) | There is the test pencil of voltage digital detection and temperature acquisition function | |
| CN204758689U (en) | Voltage detection circuit | |
| CN203643520U (en) | Optoelectronic coupler fault detector | |
| CN202941013U (en) | LED constant-current power supply circuit | |
| CN203490311U (en) | Two-stage filter detection circuit | |
| CN203929900U (en) | Simple and easy three-phase power supply phase sequence indicator | |
| CN205049720U (en) | General type detection circuitry of alternating current -direct current lamps and lanterns | |
| CN206250963U (en) | A kind of highly reliable power supply circuit | |
| CN107271837A (en) | A kind of coil turn-to-turn short circuit test device | |
| CN204442187U (en) | A kind of safety low-pressure DC power supply | |
| CN205385419U (en) | Dual output direct current adjustable power | |
| CN205544913U (en) | Anti -interference steady voltage DC power supply controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN YIHUA COMPUTER CO., LTD. Free format text: FORMER NAME: SHENZHEN YIHUA COMPUTER LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Futian District Jintian road Shenzhen City, Guangdong province 518000 No. 4018 Allianz building 27 floor A02 Patentee after: SHENZHEN YIHUA COMPUTER Co.,Ltd. Patentee after: SHENZHEN YIHUA TIME TECHNOLOGY Co.,Ltd. Patentee after: SHENZHEN YIHUA FINANCIAL INTELLIGENT Research Institute Address before: Futian District Jintian road Shenzhen City, Guangdong province 518000 No. 4018 Allianz building 27 floor A02 Patentee before: Shenzhen Yihua Computer Ltd. Patentee before: SHENZHEN YIHUA TIME TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN YIHUA FINANCIAL INTELLIGENT Research Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |