CN201811989U - Direct-current high-voltage indicating device - Google Patents
Direct-current high-voltage indicating device Download PDFInfo
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- CN201811989U CN201811989U CN2010205196078U CN201020519607U CN201811989U CN 201811989 U CN201811989 U CN 201811989U CN 2010205196078 U CN2010205196078 U CN 2010205196078U CN 201020519607 U CN201020519607 U CN 201020519607U CN 201811989 U CN201811989 U CN 201811989U
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- circuit
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- power supply
- photoelectrical coupler
- indicating
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Abstract
The utility model relates to a high-voltage indicating device, in particular to a module circuit with indicating function, and belongs to the technical field of photoelectric indication. The device comprises a series-parallel resistor voltage reducing circuit, a photoelectric coupler, an indicating circuit and a secondary power supply circuit. A direct-current high-voltage signal source is connected with the indicating circuit through the series-parallel resistor voltage reducing circuit, and the series-parallel resistor voltage reducing circuit is coupled with the secondary power supply circuit connected with a load through the photoelectric coupler. The device saves energy and power and has no mechanical fault and noise. As long as a proper luminous device such as a light-emitting diode and the like is well selected, long service life of the device can be ensured. Therefore, the device fulfills the purpose by using skilful conception, and has simple structure, low cost and durability.
Description
Technical field
The utility model relates to a kind of high pressure indicating device, and especially a kind of modular circuit with deixis belongs to photoelectricity indication technical field.
Background technology
At present, known high direct voltage device generally adopts step-down of primary power source resistance or output voltage employing Voltage stabilizing module structure.Its shortcoming is that the voltage amplitude scope is narrower when adopting primary power source, and dropping resistor need bear more high-power, thereby can produce a large amount of heats, thereby needs big heat abstractor, complex structure, and the life-span is short, and adopts the Voltage stabilizing module structure, and both expensive is used uneconomical.
The utility model content
The purpose of this utility model is: the problem at above-mentioned existing high direct voltage device exists, a kind of long service life is proposed, and structure is simple relatively, the high direct voltage indicating device of dependable performance.
In order to reach above purpose, high direct voltage indicating device of the present utility model comprises connection in series-parallel resistance drop volt circuit, photoelectrical coupler, indicating circuit and secondary power supply feed circuit, the high direct voltage signal source connects indicating circuit by described connection in series-parallel resistance drop volt circuit, and described connection in series-parallel resistance drop volt circuit is by photoelectrical coupler and the secondary power supply feed circuit coupling that connects load.
High direct voltage indicating circuit of the present utility model is after connecting secondary power supply and the high-voltage signal input is arranged, by connection in series-parallel resistance step-down conducting photoelectrical coupler load (as fluorescent tube) is lighted, and follow the tracks of input voltage signal simultaneously, light different luminescent devices according to different magnitudes of voltage, allow the size of input voltage visually give the more intuitive effect of people.
Because luminescent device itself does not need motion, so the utility model energy saving, does not have mechanical fault and noise.As long as choose, can guarantee long serviceable life such as suitable luminescent devices such as light emitting diodes.This shows that the utility model has been realized goal of the invention with design cleverly, and is simple in structure, cost economy is durable in use.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
Embodiment one
The high direct voltage indicating circuit of present embodiment is as shown in Figure 1: after the high direct voltage signal inserts, at first by six resistance of R5～R10 dividing potential drop of connecting, use ground connection after ten resistance parallel connections of R11～R20 afterwards, ten resistance parallel connections have been guaranteed can not cross the earth effect output voltage in case there is one, two resistance to damage, and connect photoelectrical coupler by the current potential after the resistance in series dividing potential drop.Photoelectrical coupler is actually luminescent device (light emitting diode) and photosensitive device (phototriode) is fitted together, and realizes that by light coupling constitutes the device of the conversion of light and electricity.When electric signal was sent into the photoelectrical coupler input end, light emitting diode was lighted, and resistance diminished after light activated element was subjected to illumination, the output terminal conducting, on the contrary input end does not have input signal, and light emitting diode does not work, and phototriode ends, and output terminal is obstructed.Present embodiment has adopted current triode type photoelectrical coupler commonly used, its advantage is that it can suppress the undesired signal of each specific admixture effectively, because its input impedance is very little, and the impedance of undesired signal is bigger relatively, according to voltage divider principle as can be known, even the undesired signal voltage amplitude is bigger, but the actual voltage signal that mixes of delivering to the photoelectrical coupler input end can be very little, the light activated element resistance is still bigger, does not have enough energy to make led lighting, thereby clutter is curbed.
Load electrical appliance in the present embodiment needs the secondary power supply of external alternating current 220V to be driven.The secondary power supply circuit is made of step-down transformer, rectifier bridge and filtering circuit, the AC220V power supply connects diode bridge rectification and C1 electrolysis filtering after transformer is reduced to 12V, be of coupled connections with the output terminal of photoelectrical coupler respectively by R23 and R24 two repeating resistances again.Like this after the load electrical appliance connects secondary power supply, when the high-voltage signal input is arranged, just can be by photoelectrical coupler and relay with the conducting of load electrical appliance.Be actually in the present embodiment and adopted two photoelectrical couplers to constitute an OR circuit, also can adopt a plurality of, for just do not allow wherein because some inefficacies cause fault.
Indicating circuit has partly adopted integrated chip LM3914 as main element, and its " 1 " pin, " 10 "～" 18 " pin connect ten light emitting diodes of D1～D10 respectively as the voltage deixis.This chip internal has encapsulated 10 resistance and 10 voltage comparators as bleeder circuit, by " 6 ", " 4 " pin is drawn, and " 9 " pin is the chip power end, with ten shared 1 power supply signal lines of light emitting diode, receive the C1 electrolysis filtered+12V power supply place, " 2 " pin ground connection, " 9 " pin links to each other with " 3 " pin, and light emitting diode is the strip indication, if link to each other, then be the point-like indication with " 11 " pin." 5 " pin is the indicator signal input end, receives on the current potential after the R5～R10 resistance series connection dividing potential drop.
Like this, after connecting secondary power supply, in case high-pressure side has the signal input, the load electrical appliance just can conducting, simultaneously, indicates the size of current input high tension voltage by the light on and off of ten light emitting diodes of D1～D10.
Claims (4)
1. high direct voltage indicating device, it is characterized in that: comprise connection in series-parallel resistance drop volt circuit, photoelectrical coupler, indicating circuit and secondary power supply feed circuit, the high direct voltage signal source connects indicating circuit by described connection in series-parallel resistance drop volt circuit, and described connection in series-parallel resistance drop volt circuit is by photoelectrical coupler and the secondary power supply feed circuit coupling that connects load.
2. high direct voltage indicating device according to claim 1 is characterized in that: described photoelectrical coupler is the triode type photoelectrical coupler.
3. high direct voltage indicating device according to claim 1, it is characterized in that: described secondary power supply circuit is made of step-down transformer, rectifier bridge and filtering circuit, AC power connects rectifier bridge and filtering circuit through step-down transformer, and the output terminal by repeating resistance and described photoelectrical coupler is of coupled connections again.
4. high direct voltage indicating device according to claim 3 is characterized in that: described indicating circuit adopts integrated chip LM3914 as main element, and its respective pin connects one group of light emitting diode as the voltage indication respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205196078U CN201811989U (en) | 2010-09-07 | 2010-09-07 | Direct-current high-voltage indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205196078U CN201811989U (en) | 2010-09-07 | 2010-09-07 | Direct-current high-voltage indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811989U true CN201811989U (en) | 2011-04-27 |
Family
ID=43894931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205196078U Expired - Fee Related CN201811989U (en) | 2010-09-07 | 2010-09-07 | Direct-current high-voltage indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201811989U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749501A (en) * | 2012-08-01 | 2012-10-24 | 电子科技大学 | Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit |
| CN103336165A (en) * | 2013-06-25 | 2013-10-02 | 西安电子科技大学 | Detection circuit for overcurrent of alternating current and direct current |
| CN103852626A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Direct current circuit detection device |
-
2010
- 2010-09-07 CN CN2010205196078U patent/CN201811989U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749501A (en) * | 2012-08-01 | 2012-10-24 | 电子科技大学 | Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit |
| CN102749501B (en) * | 2012-08-01 | 2015-01-21 | 电子科技大学 | Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit |
| CN103852626A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Direct current circuit detection device |
| CN103336165A (en) * | 2013-06-25 | 2013-10-02 | 西安电子科技大学 | Detection circuit for overcurrent of alternating current and direct current |
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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: 20110427 Termination date: 20130907 |