CN202230127U - Stable and reliable mesohigh electrification indicating circuit - Google Patents
Stable and reliable mesohigh electrification indicating circuit Download PDFInfo
- Publication number
- CN202230127U CN202230127U CN201120391838XU CN201120391838U CN202230127U CN 202230127 U CN202230127 U CN 202230127U CN 201120391838X U CN201120391838X U CN 201120391838XU CN 201120391838 U CN201120391838 U CN 201120391838U CN 202230127 U CN202230127 U CN 202230127U
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- bridge rectifier
- reliable
- stable
- mesohigh
- indicating circuit
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Abstract
The utility model discloses a stable and reliable mesohigh electrification indicating circuit, which comprises an input end (1), a rectification unit (2), a switch unit (3), a light emitting assembly (4), a protective resistor (5) and an output port (6). The rectification unit (2) is a bridge rectifier, a solid discharge tube (9) is connected between the two input ends of the bridge rectifier in parallel, and a first capacitor (10) is connected between the two output ends of the bridge rectifier in parallel. The stable and reliable mesohigh electrification indicating circuit adopts the structure, can enable circuit structures to be simple, low in cost, easy to popularize and capable of timely displaying electrification or leakage situations at the positions such as casings of electrical equipment, simultaneously can effectively protect commutation diodes and improves rectification efficiency.
Description
Technical field
The utility model relates to a kind of circuit, specifically is the charged indicating circuit of a kind of reliable and stable mesohigh.
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.On the other hand, some charged indicating circuit adopts diode in series as rectifier system, and so not only efficient is low, also burns out diode easily; Simultaneously, what some indicating circuits also adopted in addition is bridge rectifier, but rectifier lacks protection, and diode is burnt out easily, and entire circuit can not provide stable voltage to come the driven for emitting lights assembly luminous, judges to mesohigh and brings influence.
The utility model content
The utility model provides a kind of mesohigh simple in structure, that reliability is higher 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 protect commutation diode simultaneously effectively, improved efficiency of rectification.
The utility model is that the technical solution problem mainly realizes through following technical scheme: the charged indicating circuit of a kind of reliable and stable mesohigh; 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; Also be parallel with a solid discharging tube between two input ends of bridge rectifier, be parallel with one first electric capacity between two output terminals of bridge rectifier.
Said switch element comprises tunnel diode and second 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) input end of the bridge rectifier of the utility model and output terminal fixedly discharge tube, first electric capacity of one of parallel connection respectively; Not only increased the overvoltage protection of circuit; More realize charging and discharging incessantly, thereby improved the stability and the reliability of entire circuit.
(3) 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.
(4) 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, second electric capacity, 8, light emitting diode, 9, solid discharging tube, 10, first electric capacity.
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 3, luminescence component 4, protective resistance 5 and delivery outlet 6.
The rectification unit 2 of present embodiment 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; Also be parallel with a solid discharging tube 9 between two input ends of bridge rectifier, be parallel with one first electric capacity 10 between two output terminals of bridge rectifier.
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 second 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, when being with high voltage appearance on the casing for electric appliances to be detected; Voltage at first gets into this circuit through input port 1; Under the effect of bridge rectifier, convert alternating voltage into DC voltage then, 3 conductings of voltage triggered tunnel diode; At this moment, light emitting diode 8 is light; And when not having high voltage appearance on the casing for electric appliances to be detected, 8 of light emitting diodes are in and extinguish state.
As stated, then can realize the utility model well.
Claims (4)
1. charged indicating circuit of reliable and stable mesohigh; Comprise input end (1), rectification unit (2), switch element, luminescence component (4), protective resistance (5) and delivery outlet (6); 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); It is characterized in that: also be parallel with a solid discharging tube (9) between two input ends of said bridge rectifier, be parallel with one first electric capacity (10) between two output terminals of bridge rectifier.
2. the charged indicating circuit of a kind of reliable and stable mesohigh according to claim 1 is characterized in that: said switch element comprises tunnel diode (3) and second electric capacity (7) parallelly connected with tunnel diode (3) two ends.
3. the charged indicating circuit of a kind of reliable and stable mesohigh according to claim 1; 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 a kind of reliable and stable mesohigh according to claim 1 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 |
|---|---|---|---|
| CN201120391838XU CN202230127U (en) | 2011-10-15 | 2011-10-15 | Stable and reliable mesohigh electrification indicating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120391838XU CN202230127U (en) | 2011-10-15 | 2011-10-15 | Stable and reliable mesohigh electrification indicating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230127U true CN202230127U (en) | 2012-05-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120391838XU Expired - Fee Related CN202230127U (en) | 2011-10-15 | 2011-10-15 | Stable and reliable mesohigh electrification indicating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322691A (en) * | 2018-10-22 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | The energy consuming brake of tunnel blower |
-
2011
- 2011-10-15 CN CN201120391838XU patent/CN202230127U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322691A (en) * | 2018-10-22 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | The energy consuming brake of tunnel blower |
| CN109322691B (en) * | 2018-10-22 | 2024-03-15 | 中铁第四勘察设计院集团有限公司 | Energy consumption braking device of tunnel fan |
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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 |