CN202563000U - Indicating circuit capable of displaying alternating current state - Google Patents
Indicating circuit capable of displaying alternating current state Download PDFInfo
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- CN202563000U CN202563000U CN2012201494819U CN201220149481U CN202563000U CN 202563000 U CN202563000 U CN 202563000U CN 2012201494819 U CN2012201494819 U CN 2012201494819U CN 201220149481 U CN201220149481 U CN 201220149481U CN 202563000 U CN202563000 U CN 202563000U
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- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims description 22
- 239000003086 colorant Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses an indicating circuit capable of displaying an alternating current state. The indicating circuit belongs to an alternating current state circuit and has such a structure that an alternating current AC is connected to a rectifier diode D1, a voltage division resistor R1 and a voltage division resistor R2 are connected in series and then are connected in parallel with a filter capacitor C1, the rectifier diode D1 is connected in series to one end of the parallel circuit, a voltage VCC is a power supply voltage of a comparator IC1, an input end of the comparator IC1 is respectively connected between the voltage division resistor R1 and the voltage division resistor R2 and on a reference voltage, an output end of the comparator IC1 is connected with an MOS pipe Q1, a bi-color LED D2 comprises two LEDs in serial connection, the MOS pipe Q1 is connected between the two LEDs, one end of a current-limiting resistor R3 is connected with the voltage VCC and the other end is connected with one end of the bi-color LED D2, and the other end of the bi-color LED D2 is grounded. According to the utility model, through comparison of a sampling current voltage and the reference voltage, the alternating current state is displayed by controlling different indicator lamps. The indicating circuit is reasonable in design and is convenient to use.
Description
Technical field
The utility model relates to a kind of exchange status circuit, specifically shows the indicating circuit of exchange status.
Background technology
The composition of alternating current (AC) comprises: three kinds of voltages, electric current, frequency, its frequency can be divided into 50HZ (hertz) and two kinds of 60HZ (hertz), and voltage distributes by 100V to 240V.Machine room is generally introduced 380V, and the civil power of 50HZ is gone into machine room, but the voltage of the single-phase 220V that the power rectifier module of equipment is used.
Normally whether alternating current needs the detection at any time present case.Present civil power state indicating device structure is quite complicated, and the state indication can't be obvious, uses very inconvenient.
The utility model content
The technical assignment of the utility model is to above weak point; Provide a kind of, and show exchange status, reasonable in design, simple in structure, easy to use, indicating circuit that state is indicated conspicuous demonstration exchange status through controlling different pilot lamp through the comparison of sampling alternating voltage and reference voltage.
The utility model solves the technical scheme that its technical matters adopted: comprise alternating current AC, commutation diode D1, filter capacitor C1, divider resistance R1, divider resistance R2, comparer IC1, current-limiting resistance R3, dual-colored LED D2, metal-oxide-semiconductor Q1; Alternating current AC inserts commutation diode D1; Divider resistance R1 and divider resistance R2 series connection back are parallelly connected with filter capacitor C1; Commutation diode D1 is connected in series on above-mentioned parallel circuit one end, above-mentioned parallel circuit other end ground connection; Voltage VCC is connected to comparer IC1 and for it supply voltage is provided, and the input end of comparer IC1 is connected to and reaches on the reference voltage grid of the output termination metal-oxide-semiconductor Q1 of comparer IC1 between divider resistance R1, the divider resistance R2; Dual-colored LED D2 comprises two LED that are respectively two kinds of colors of series connection, and the source electrode of metal-oxide-semiconductor Q1 is connected between two LED of dual-colored LED D2, the grounded drain of metal-oxide-semiconductor Q1; Current-limiting resistance R3 one termination voltage VCC, another termination dual-colored LED D2 one end, dual-colored LED D2 other end ground connection.
Dual-colored LED D2 comprises the green LED and the red LED of series connection.
The source electrode of metal-oxide-semiconductor Q1 is connected between green LED and the red LED, voltage VCC series limiting resistor R3 one end, current-limiting resistance R3 other end series connection green LED one end, green LED other end series connection red LED one end, red LED other end ground connection.
Also comprise pull-up resistor R4, pull-up resistor R4 one termination voltage VCC, the grid of another termination metal-oxide-semiconductor Q1.
In the indicating circuit of the demonstration exchange status of the utility model, commutation diode D1 is with alternating current AC half-wave rectification, and rectification is that folk prescription is to sine wave; Filter capacitor C1 filter power supply is with sinusoidal wave filtering after the rectification; Divider resistance R1, divider resistance R2 divider resistance carry out input comparator IC1 after the dividing potential drop with voltage behind the rectifying and wave-filtering; Comparer IC1 compares AC sampling voltage and benchmark, the output control signal; Metal-oxide-semiconductor Q1 controls break-make; Voltage VCC is the supply voltage of comparer IC1.
The indicating circuit of the demonstration exchange status of the utility model is compared with prior art; Compare through sampling alternating voltage and reference voltage; And show exchange status through controlling different pilot lamp; Have characteristics such as reasonable in design, simple in structure, easy to use, that the state indication is obvious, thereby, have good value for applications.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing 1 is the circuit diagram of the indicating circuit of demonstration exchange status.
Comprise among the figure: alternating current AC, commutation diode D1, filter capacitor C1, divider resistance R1, divider resistance R2, comparer IC1, voltage VCC, pull-up resistor R4, current-limiting resistance R3, dual-colored LED D2, metal-oxide-semiconductor Q1, green LED, red LED, reference voltage.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
The indicating circuit of the demonstration exchange status of the utility model; Its structure comprises alternating current AC, commutation diode D1, filter capacitor C1, divider resistance R1, divider resistance R2, comparer IC1, current-limiting resistance R3, dual-colored LED D2, metal-oxide-semiconductor Q1; Alternating current AC inserts commutation diode D1; Divider resistance R1 and divider resistance R2 series connection back are parallelly connected with filter capacitor C1, and commutation diode D1 is connected in series on above-mentioned parallel circuit one end, above-mentioned parallel circuit other end ground connection; Voltage VCC is connected to comparer IC1 and for it supply voltage is provided, and the input end of comparer IC1 is connected to and reaches on the reference voltage grid of the output termination metal-oxide-semiconductor Q1 of comparer IC1 between divider resistance R1, the divider resistance R2; Dual-colored LED D2 comprises two LED that are respectively two kinds of colors of series connection, and the source electrode of metal-oxide-semiconductor Q1 is connected between two LED of dual-colored LED D2, the grounded drain of metal-oxide-semiconductor Q1; Current-limiting resistance R3 one termination voltage VCC, another termination dual-colored LED D2 one end, dual-colored LED D2 other end ground connection.
Dual-colored LED D2 comprises the green LED and the red LED of series connection.
The source electrode of metal-oxide-semiconductor Q1 is connected between green LED and the red LED, voltage VCC series limiting resistor R3 one end, current-limiting resistance R3 other end series connection green LED one end, green LED other end series connection red LED one end, red LED other end ground connection.
Also comprise pull-up resistor R4, pull-up resistor R4 one termination voltage VCC, the grid of another termination metal-oxide-semiconductor Q1.
During work, alternating current AC just often, sampled voltage after divider resistance R1, divider resistance R2 dividing potential drop greater than reference voltage; Comparer IC1 exports high level, metal-oxide-semiconductor Q1 conducting ground connection, green LED conducting among the dual-colored LED D2; Red LED is turn-offed, and pilot lamp shows green, represents alternating current normal.When alternating current AC power down, sampled voltage after divider resistance R1, divider resistance R2 dividing potential drop less than reference voltage, comparer IC1 output low level; Metal-oxide-semiconductor Q1 turn-offs; Green LED and red LED conducting simultaneously among the dual-colored LED D2, pilot lamp shows amber, represents alternating current unusual.
Its processing and fabricating of indicating circuit of the demonstration exchange status of the utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (4)
1. the indicating circuit that shows exchange status; Comprise alternating current AC; It is characterized in that also comprising commutation diode D1, filter capacitor C1, divider resistance R1, divider resistance R2, comparer IC1, current-limiting resistance R3, dual-colored LED D2, metal-oxide-semiconductor Q1, alternating current AC inserts commutation diode D1, and divider resistance R1 and divider resistance R2 series connection back are parallelly connected with filter capacitor C1; Commutation diode D1 is connected in series on above-mentioned parallel circuit one end, above-mentioned parallel circuit other end ground connection; Voltage VCC is connected to comparer IC1 and for it supply voltage is provided, and the input end of comparer IC1 is connected to and reaches on the reference voltage grid of the output termination metal-oxide-semiconductor Q1 of comparer IC1 between divider resistance R1, the divider resistance R2; Dual-colored LED D2 comprises two LED that are respectively two kinds of colors of series connection, and the source electrode of metal-oxide-semiconductor Q1 is connected between two LED of dual-colored LED D2, the grounded drain of metal-oxide-semiconductor Q1; Current-limiting resistance R3 one termination voltage VCC, another termination dual-colored LED D2 one end, dual-colored LED D2 other end ground connection.
2. the indicating circuit of demonstration exchange status according to claim 1 is characterized in that dual-colored LED D2 comprises the green LED and the red LED of series connection.
3. the indicating circuit of demonstration exchange status according to claim 1 and 2; The source electrode that it is characterized in that metal-oxide-semiconductor Q1 is connected between green LED and the red LED; Voltage VCC series limiting resistor R3 one end; Current-limiting resistance R3 other end series connection green LED one end, green LED other end series connection red LED one end, red LED other end ground connection.
4. the indicating circuit of demonstration exchange status according to claim 1 is characterized in that also comprising pull-up resistor R4, pull-up resistor R4 one termination voltage VCC, the grid of another termination metal-oxide-semiconductor Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201494819U CN202563000U (en) | 2012-04-11 | 2012-04-11 | Indicating circuit capable of displaying alternating current state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201494819U CN202563000U (en) | 2012-04-11 | 2012-04-11 | Indicating circuit capable of displaying alternating current state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563000U true CN202563000U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201494819U Expired - Fee Related CN202563000U (en) | 2012-04-11 | 2012-04-11 | Indicating circuit capable of displaying alternating current state |
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| Country | Link |
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| CN (1) | CN202563000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564428A (en) * | 2017-11-01 | 2018-01-09 | 深圳市移显光电科技有限公司 | A kind of solar LED screen display module |
-
2012
- 2012-04-11 CN CN2012201494819U patent/CN202563000U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564428A (en) * | 2017-11-01 | 2018-01-09 | 深圳市移显光电科技有限公司 | A kind of solar LED screen display module |
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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: 20121128 Termination date: 20150411 |
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| EXPY | Termination of patent right or utility model |