CN201344971Y - LED power and voltage monitor - Google Patents
LED power and voltage monitor Download PDFInfo
- Publication number
- CN201344971Y CN201344971Y CN 200920113851 CN200920113851U CN201344971Y CN 201344971 Y CN201344971 Y CN 201344971Y CN 200920113851 CN200920113851 CN 200920113851 CN 200920113851 U CN200920113851 U CN 200920113851U CN 201344971 Y CN201344971 Y CN 201344971Y
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- module
- led
- voltage
- voltage monitoring
- power
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Abstract
An LED (light emitting diode) power and voltage monitor comprises a power rectification module, a voltage monitoring module, an LED driving module and an LED indicating module. The power rectification module is connected with the voltage monitoring module; and the power rectification module, the LED driving module and the LED indicating module are connected in sequence; and the voltage monitoring module is connected with an AC (alternating current) power socket. After being subjected to the voltage reduction and the rectification by the power rectification module, the alternating current is supplied to the voltage monitoring module and the LED driving module for the power supply. In addition, the voltage monitoring module monitors the electric level value of an alternating current power supply in a real-time manner to covert the electric level value by taking a 10V as a gear; and the LED indicating module is driven by the LED driving module to correspondingly display the electric value.
Description
Affiliated technical field
The utility model relates to a kind of monitor, especially a kind of supply voltage monitoring device.
Background technology
Power source voltage is required relatively strictlyer in some environment of factory and R﹠D institution, overtension or brownout all can be to producing or equipment throw into question to use, lack at present a kind ofly to monitor supply voltage to surveillance equipment easily, intuitively.
Summary of the invention
In order to overcome monitoring supply voltage inconvenience, problem intuitively not.The utility model provides a kind of LED supply voltage monitoring device, and this LED supply voltage monitoring device adopts light emitting LED lamp to indicate the real-time voltage of AC power to refer to intuitively, all has use value widely in factory, R﹠D institution.
The technical scheme that its technical matters that solves the utility model adopts is: LED supply voltage monitoring device comprises power rectifier module, voltage monitoring module, LED driver module, LED indicating module, it is characterized in that: the power rectifier module is connected with the voltage monitoring module, power rectifier module, LED driver module, LED indicating module connect successively, and the voltage monitoring module also is connected with AC Power supply socket.The power rectifier module reduces pressure alternating current, and rectification offers the voltage monitoring module, the LED driver module is powered, the voltage monitoring module is monitored the AC power level value in real time, level value is one grade with 10V changes, show by LED driver module driving LED indicating module is corresponding.
The beneficial effects of the utility model are, and are simple in structure, cost is low, easy making, has use value widely.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a theory diagram of the present utility model; Fig. 2 is an electric structural drawing of the present utility model.
Among the figure, 1. power rectifier module, 2. voltage monitoring module, 3.LED driver module, 4.LED indicating module, 5. AC Power supply socket.
Embodiment
In Fig. 1, LED supply voltage monitoring device comprises power rectifier module 1, voltage monitoring module 2, LED driver module 3, LED indicating module 4, it is characterized in that: power rectifier module 1 is connected with voltage monitoring module 2, power rectifier module 1, LED driver module 3, LED indicating module 4 connect successively, and voltage monitoring module 2 also is connected with AC Power supply socket 5.Power rectifier module 1 reduces pressure alternating current, and rectification offers voltage monitoring module 2, LED driver module 3 is powered, voltage monitoring module 2 is monitoring AC power level value in real time, level value is one grade with 10V changes, by the 4 corresponding demonstrations of LED driver module 3 driving LED indicating modules.
In Fig. 2, be provided with 12 luminotron LED in the circuit, promptly indicate the real-time level value of AC supply voltage with LED1～LED12.When input ac voltage was lower than 160V, all luminotrons extinguished; The quantity that LED lights increases by whenever adding 10V.When input voltage reached 270V, all LED were bright entirely.Alternating current 220V becomes 16V through the transformer step-down, is finished by D1～D4 bridge rectifier, capacitor C1～C3 filtering and IC4 voltage stabilizing again.+ 12V stabilized voltage supply is supplied with the operating voltage of LM339.In order to detect alternating voltage, the inverting input of comparer N1～N12 is received in the input of voltage stabilizer+12V.Light-emitting diode display is received the output terminal of amplifier IC1～IC3 (comparer).Because of the end of oppisite phase of all comparers links to each other with the input end of direct current stabilizer, and this input terminal voltage is proportional with AC-input voltage, its objective is and be convenient to alternating voltage is changed sampling that the in-phase end of comparer links to each other with+12V respectively by relevant resistance for this reason.Resistance R 13～R25 in the circuit forms the resistance pressure-dividing network of reference voltage, and the voltage on node 1～12 is respectively 0.93V, 1.87V, 2.80V, 3.73V, 4.67V, 6.53V, 7.46V, 8.40V, 9.33V, 10.27V and 11.20V etc.When input voltage when 160V～270V (interchange) changes, the terminal voltage of filter capacitor C1, C2 changes about 14.3～24.1V, Zener ZD1 step-down is fixed+12V, so the no-load voltage ratio voltage of resistance R 27, R28 all is added on each comparer end of oppisite phase pin, therefore, when comparer LM339 in-phase end voltage was higher than end of oppisite phase, the corresponding LED that connects of its output just lighted.Otherwise extinguish.
Claims (1)
1. a LED supply voltage monitoring device comprises power rectifier module (1), voltage monitoring module (2), LED driver module (3), LED indicating module (4), it is characterized in that: power rectifier module (1) is connected with voltage monitoring module (2), power rectifier module (1), LED driver module (3), LED indicating module (4) connect successively, and voltage monitoring module (2) also is connected with AC Power supply socket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920113851 CN201344971Y (en) | 2009-02-17 | 2009-02-17 | LED power and voltage monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920113851 CN201344971Y (en) | 2009-02-17 | 2009-02-17 | LED power and voltage monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344971Y true CN201344971Y (en) | 2009-11-11 |
Family
ID=41276552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920113851 Expired - Fee Related CN201344971Y (en) | 2009-02-17 | 2009-02-17 | LED power and voltage monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344971Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928792A (en) * | 2012-11-06 | 2013-02-13 | 中山新特丽照明电器有限公司 | Comprehensive testing device of light-emitting diode (LED) driving power supply |
| CN105259517A (en) * | 2015-11-25 | 2016-01-20 | 长沙凯上电子科技有限公司 | Load state display circuit |
-
2009
- 2009-02-17 CN CN 200920113851 patent/CN201344971Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928792A (en) * | 2012-11-06 | 2013-02-13 | 中山新特丽照明电器有限公司 | Comprehensive testing device of light-emitting diode (LED) driving power supply |
| CN105259517A (en) * | 2015-11-25 | 2016-01-20 | 长沙凯上电子科技有限公司 | Load state display circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20100217 |