CN202230126U - Middle-high voltage electrification indicating circuit with good rectification effect - Google Patents
Middle-high voltage electrification indicating circuit with good rectification effect Download PDFInfo
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- CN202230126U CN202230126U CN2011203918318U CN201120391831U CN202230126U CN 202230126 U CN202230126 U CN 202230126U CN 2011203918318 U CN2011203918318 U CN 2011203918318U CN 201120391831 U CN201120391831 U CN 201120391831U CN 202230126 U CN202230126 U CN 202230126U
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- input end
- indicating circuit
- bridge rectifier
- rectification
- light emitting
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Abstract
The utility model discloses a middle-high voltage electrification indicating circuit with a good rectification effect, and the circuit comprises an input end (1), a rectification unit (2), a switch unit, a luminous component (4), a protective resistor (5) and an output port (6), wherein the rectification unit (2) is a bridge rectifier, the two input end of the bridge rectifier are respectively connected with the input end (1) and an output end (6), the two output ends of the bridge rectifier are respectively connected with the input ends of the protective resistor (5) and the switch unit, the output end of the switch unit is connected with the input end of the luminous component (4), and the output end of the luminous component (4) is connected with the protective resistor (5). According to the utility model, such a structure is adopted, thus the circuit structure can be simplified, the cost is lower, the middle-high voltage electrification indicating circuit is easy to popularize, and the electrification or leakage condition of a part such as a shell of an electrical appliance can be displayed early; and meanwhile, the rectification efficiency can be effectively improved, and the probability that a diode is burned out can be greatly reduced.
Description
Technical field
The utility model relates to a kind of circuit, specifically is the charged indicating circuit of the good mesohigh of a kind of rectification effect.
Background technology
At present, owing to having dangerous voltage, electric appliance casing or other similar portions accidental causes cause the accident of electric shock injures and deaths to happen occasionally.Various earth leakage protective devices (or claiming protector) are arranged on the market now, basically all are the difference between currents that produces between power supply two leads when utilizing electric leakage, after the treated amplification relay are cut off power supply automatically, thereby prevent electric leakage or electric shock accidents to continue to produce.But its structure is comparatively complicated, and cost is high, is difficult for popularizing, and can not shows the charged or electric leakage situation at positions such as casing for electric appliances early.On the one hand, many electric equipment products all have the supply voltage pilot lamp, and majority is to be serially connected between power supply phase line L and the neutral line N by a neon lamp and a current-limiting resistance, also have to use light emitting diode to show.But majority is the DC power supply by switch control, the break-make that they can only display power supply, and its maximum indication range is between 110V ~ 250V.In addition, some charged indicating circuit adopts diode in series as rectifier system, and so not only efficient is low, also burns out diode simultaneously easily.
The utility model content
The utility model provides a kind of mesohigh simple in structure, that rectification effect is good charged indicating circuit; Solved the problem that mesohigh charged indicating circuit complex structure in the past, cost are high, be difficult for popularizing, can not show early the charged or electric leakage situation in position such as casing for electric appliances; Also improve efficiency of rectification simultaneously effectively, greatly reduced the possibility that diode is burnt out.
The utility model is that the technical solution problem mainly realizes through following technical scheme: the charged indicating circuit of the mesohigh that a kind of rectification effect is good; Comprise input end, rectification unit, switch element, luminescence component, protective resistance and delivery outlet; Said rectification unit is a bridge rectifier; Two input ends of bridge rectifier are connected with output terminal with input end respectively; Two output terminals of bridge rectifier are connected with the input end of protective resistance, switch element respectively, and the output terminal of switch element is connected with the input end of luminescence component, and the output terminal of luminescence component is connected with protective resistance.
Said switch element comprises tunnel diode and the electric capacity parallelly connected with the tunnel diode two ends.Tunnel diode is a kind of two ends semiconductor junction device, and under forward bias, forward current rises rapidly with the increase of voltage at the beginning and reaches maximum value, and the increase electric current with voltage reduces to produce negative resistance phenomenon on the contrary subsequently; When reverse, inverse current increases sharply with the reverse biased increase, is equivalent to short circuit.
Said luminescence component comprises at least two group light emitting diodes, and the light emitting diode in the group is connected each other, and the light emitting diode between group is parallel with one another.
The Standard resistance range of said protective resistance is 1k Ω ~ 5k Ω.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model adopts the form that bridge rectifier, tunnel diode, light emitting diode are connected successively; Bridge rectifier converts alternating voltage to DC voltage, as criterion, has greatly improved promptness and the accuracy judged by the light on and off of light emitting diode; Bridge rectifier is compared common diode half-wave rectification; Power is higher, and electric current is littler, and diode is more not fragile.
(2) luminescence component of the utility model is provided with at least two group light emitting diodes, so largely the situation having avoided damaging whole cisco unity malfunction because of light emitting diode take place.
(3) the utility model is simple in structure, and cost is lower, is easy to popularize.
Description of drawings
Fig. 1 is the circuit structure diagram of the embodiment 1 of the utility model;
Fig. 2 is the circuit structure diagram of the embodiment 2 of the utility model.
Pairing Reference numeral is in the accompanying drawing: 1, input port, 2, rectification unit, 3, tunnel diode, 4, luminescence component, 5, protective resistance, 6, delivery outlet, 7, electric capacity, 8, light emitting diode.
Embodiment
Below in conjunction with embodiment the utility model is done further to specify, but the embodiment of the utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the utility model comprises input end 1, rectification unit 2, switch element, luminescence component 4, protective resistance 5 and delivery outlet 6.
The rectification unit 2 of present embodiment is a bridge rectifier, and two input ends of bridge rectifier are connected with output terminal 6 with input end 1 respectively, and two output terminals of bridge rectifier are connected with the input end of protective resistance 5, switch element respectively.
The output terminal of the switch element of present embodiment is connected with the input end of luminescence component 4, and the output terminal of luminescence component 4 is connected with protective resistance 5, and the Standard resistance range of protective resistance 5 is 1k Ω ~ 5k Ω; Switch element comprises tunnel diode 3 and the electric capacity 7 parallelly connected with tunnel diode 3 two ends, and tunnel diode 3 serves as the effect of switch.
The luminescence component 4 of present embodiment comprises two groups of light emitting diodes 8, and the light emitting diode 8 in the group is connected each other, and the light emitting diode 8 between group is parallel with one another.
Embodiment 2:
As shown in Figure 2, present embodiment and embodiment 1 are basic identical, and different places is that luminescence component 4 comprises three groups of light emitting diodes 8, and the light emitting diode 8 in the group is connected each other, and the light emitting diode 8 between group is parallel with one another.
The principle of work of the utility model is: at first, through outer lead the utility model is installed in casing for electric appliances to be detected or other positions, voltage at first gets into this circuit through input port 1; Then under the effect of bridge rectifier; Convert alternating voltage into DC voltage, 3 conductings of voltage triggered tunnel diode, at this moment; Light emitting diode 8 is light, shows that there is high voltage appearance in this casing for electric appliances; When light emitting diode 8 then is in when extinguishing state, then show not have high voltage appearance on this casing for electric appliances.
As stated, then can realize the utility model well.
Claims (4)
1. charged indicating circuit of mesohigh that rectification effect is good; It is characterized in that: comprise input end (1), rectification unit (2), switch element, luminescence component (4), protective resistance (5) and delivery outlet (6); Said rectification unit (2) is a bridge rectifier; Two input ends of bridge rectifier are connected with output terminal (6) with input end (1) respectively; Two output terminals of bridge rectifier are connected with the input end of protective resistance (5), switch element respectively, and the output terminal of switch element is connected with the input end of luminescence component (4), and the output terminal of luminescence component (4) is connected with protective resistance (5).
2. the charged indicating circuit of mesohigh that a kind of rectification effect according to claim 1 is good is characterized in that: said switch element comprises tunnel diode (3) and the electric capacity (7) parallelly connected with tunnel diode (3) two ends.
3. the charged indicating circuit of mesohigh that a kind of rectification effect according to claim 1 is good; It is characterized in that: said luminescence component (4) comprises at least two group light emitting diodes (8); Light emitting diode (8) in the group is series connection each other, and the light emitting diode between group (8) is parallel with one another.
4. the charged indicating circuit of mesohigh that a kind of rectification effect according to claim 1 is good is characterized in that: the Standard resistance range of said protective resistance (5) is 1k Ω ~ 5k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203918318U CN202230126U (en) | 2011-10-15 | 2011-10-15 | Middle-high voltage electrification indicating circuit with good rectification effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203918318U CN202230126U (en) | 2011-10-15 | 2011-10-15 | Middle-high voltage electrification indicating circuit with good rectification effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230126U true CN202230126U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203918318U Expired - Fee Related CN202230126U (en) | 2011-10-15 | 2011-10-15 | Middle-high voltage electrification indicating circuit with good rectification effect |
Country Status (1)
| Country | Link |
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| CN (1) | CN202230126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678142A (en) * | 2015-03-18 | 2015-06-03 | 国网辽宁省电力有限公司丹东供电公司 | Automatic safety warning circuit of electric energy metering box |
-
2011
- 2011-10-15 CN CN2011203918318U patent/CN202230126U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678142A (en) * | 2015-03-18 | 2015-06-03 | 国网辽宁省电力有限公司丹东供电公司 | Automatic safety warning circuit of electric energy metering box |
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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: 20120523 Termination date: 20121015 |