CN212031584U - Electrified indicating circuit adopting flash mode - Google Patents
Electrified indicating circuit adopting flash mode Download PDFInfo
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- CN212031584U CN212031584U CN202020485000.6U CN202020485000U CN212031584U CN 212031584 U CN212031584 U CN 212031584U CN 202020485000 U CN202020485000 U CN 202020485000U CN 212031584 U CN212031584 U CN 212031584U
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- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000002411 adverse Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model provides an adopt electrified indicating circuit of flash of light mode, relates to electrified detection area, has solved the electrified pilot lamp drive that current electrified indicating circuit exists not enough the luminance low, adopt the poor problem of plain light mode indicating effect. The circuit comprises an optical coupler, a light emitting diode, a bidirectional trigger diode, a first capacitor, a second capacitor, a silicon bridge, a grounding terminal and an input terminal; one end of the bidirectional trigger diode is connected with the positive electrode of the light-emitting diode, the other end of the bidirectional trigger diode is respectively connected with the negative electrode of the optical coupling input end and the positive electrode of the first capacitor, the positive electrode of the optical coupling input end is connected with the positive electrode of the silicon bridge, the negative electrode of the first capacitor, the negative electrode of the light-emitting diode and the negative electrode of the silicon bridge are connected, the other two ends of the silicon bridge are respectively connected with the input terminal and the grounding terminal, the input terminal is connected with the output end of the charged sensor, and. The circuit electrified indicating lamp has high brightness, good indicating effect by adopting a flashing mode and low cost.
Description
Technical Field
The utility model relates to an electrified technical field that detects, concretely relates to adopt electrified indicating circuit of flash of light mode.
Background
In an electric power system, in order to prevent serious safety accidents such as mistaken entry into a live interval, mistaken closing of a grounding knife switch in the live state and mistaken hanging of a ground wire in the live state, a live indicating device is required to be arranged on a high-voltage switch cabinet. When the high-voltage switch cabinet is electrified, an electrified indicating lamp on the electrified indicating device is lightened, and meanwhile, the cabinet door at the electrified part is locked.
At present, the problems of the charged indication circuit in the existing charged indication device are as follows: the output current of the electrified sensor is only about 0.2mA, the electrified indicating lamp is not driven enough, the brightness is low, and in addition, a flat light mode is adopted, so the indicating effect is poor, and particularly, the confirmation is difficult when the brightness at the position of the high-voltage switch cabinet is higher. Although technically, the brightness of the live indicator lamp can be improved by only increasing the output current of the live sensor, the brightness is not practical economically, because the increase of the output current of the live sensor increases the volume of the whole live indicator device, and the manufacturing cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the electrified pilot lamp that electrified pilot circuit exists in the current electrified indicating device drives not enough luminance low, adopts the plain light mode poor indicating effect, the utility model provides an adopt electrified pilot circuit of flash of light mode.
The utility model discloses a solve the technical scheme that technical problem adopted as follows:
the utility model discloses an adopt electrified indicating circuit of flash of light mode, include: the circuit comprises an optical coupler, a light emitting diode, a bidirectional trigger diode, a first capacitor, a second capacitor, a silicon bridge, a grounding terminal and an input terminal;
bidirectional trigger diode one end is connected with emitting diode is anodal, the bidirectional trigger diode other end respectively with opto-coupler input end negative pole, the positive connection of first electric capacity, opto-coupler input end positive pole is connected with silicon bridge is anodal, first electric capacity negative pole, emitting diode negative pole, silicon bridge negative pole are connected, the other both ends of silicon bridge are connected with input terminal and ground terminal respectively, and input terminal is connected with the electrified sensor output, the second electric capacity both ends are connected with input terminal and ground terminal respectively.
Further, the flashing frequency of the light emitting diode is 2Hz or 3 Hz.
Further, the capacitance value of the first capacitor is 10 muF, and the voltage is 50V.
Further, the diac employs DB 3.
Further, an SMDB3 is adopted to replace a bidirectional trigger diode, the SMDB3 is packaged by a patch, 3 lead-out pins are arranged, and the pins I and the pins III are used as the other end after being in short circuit during assembly.
The utility model has the advantages that:
1. the utility model discloses in, luminance is high when emitting diode is luminous, and work in addition is at the flash of light mode, even consequently high tension switchgear department luminance is higher, and electrified instruction is still clear.
2. The utility model discloses in, because electrified sensor equivalent potential is high, usually more than several kilovolts, consequently the normal work that can not influence opto-coupler and electrified blocking circuit is gone into to the cluster of bidirectional trigger diode.
3. The utility model discloses in, the main effect of second electric capacity is the adverse effect of eliminating suspension electric potential, higher harmonic. In the flash mode, the capacity of the second capacitor should be reduced and the withstand voltage should be increased appropriately due to the influence of the first capacitor and the diac.
4. The utility model discloses an adopt electrified indicating circuit of flash of light mode has electrified pilot lamp luminance height, adopts flash of light mode indicating effect advantage such as good, with low costs.
Drawings
Fig. 1 is a circuit diagram of the present invention showing an electrified indication circuit by using a flashing manner.
In the figure, a P0 phase, an optocoupler, an L0 phase, a light emitting diode phase, a D phase, a diac, a C phase, a first capacitor phase, a C0 phase, a second capacitor phase, a B0 phase, a silicon bridge phase, a GND phase, a grounding terminal phase, an A phase, an input terminal phase and a S, A phase are provided with a sensor.
Detailed Description
The technical solution in the embodiments of the present invention is described in detail below with reference to the accompanying drawings. The described embodiment is only one embodiment of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses an adopt electrified indicating circuit of flash of light mode, mainly used high tension switchgear is last, during the connection, all connect an above-mentioned electrified indicating circuit in each looks of three-phase alternating current (A looks, B looks, C looks) electrified sensor one end, and A looks electrified sensor output is connected with first electrified indicating circuit promptly, and B looks electrified sensor output is connected with second electrified indicating circuit, and C looks electrified sensor output is connected with third electrified indicating circuit.
As shown in fig. 1, the present invention provides an electrified indicating circuit using flash mode, which mainly comprises: the LED driving circuit comprises an optocoupler P0, a light emitting diode L0, a diac D, a first capacitor C, a second capacitor C0, a silicon bridge B0, a ground terminal GND and an input terminal A.
The negative electrode of the input end of the optocoupler P0 is disconnected with the positive electrode of the light emitting diode L0, one end of the bidirectional trigger diode D is connected with the positive electrode of the light emitting diode L0, the other end of the bidirectional trigger diode D is respectively connected with the negative electrode of the input end of the optocoupler P0 and the positive electrode of the first capacitor C, and the negative electrode of the first capacitor C is connected with the negative electrode of the light emitting diode L0.
The positive electrode of the input end of an optocoupler P0 is connected with the positive electrode of a silicon bridge B0, the negative electrode of a first capacitor C, the negative electrode of a light emitting diode L0 and the negative electrode of a silicon bridge B0 are connected, the other two ends (except the positive electrode and the negative electrode) of the silicon bridge B0 are respectively connected with an input terminal A and a ground terminal GND, the input terminal A is connected with the output end of an A-phase charged sensor S, the input end of the A-phase charged sensor S is connected with A, and the two ends of a second capacitor C0 are respectively connected with the input terminal A and.
After the high-voltage switch cabinet is electrified, taking the phase A as an example, the output current of the phase A electrified sensor is loaded between an input terminal A and a ground terminal GND, and after full-wave rectification of a silicon bridge B0, a first capacitor C is charged through an optocoupler P0, and the voltage at two ends of the first capacitor C begins to rise; before the voltage at the two ends of the first capacitor C is lower than the sum of the breakover voltage of the bidirectional trigger diode D and the forward conduction voltage of the light-emitting diode L0, the bidirectional trigger diode D is in a cut-off state, and the light-emitting diode L0 is extinguished; when the voltage at the two ends of the first capacitor C is higher than the sum of the breakover voltage of the bidirectional trigger diode D and the forward conduction voltage of the light-emitting diode L0, the bidirectional trigger diode D is conducted and presents a negative resistance characteristic, and the first capacitor C is rapidly discharged through the bidirectional trigger diode D and the light-emitting diode L0; because the discharge current is very large and is far larger than the output current of the electrified sensor, the light-emitting diode L0 emits light with high brightness; along with the discharging, the voltage at the two ends of the first capacitor C falls back quickly, when the voltage at the two ends of the first capacitor C is lower than the sum of the forward conducting voltages of the bidirectional trigger diode D and the light-emitting diode L0, the bidirectional trigger diode D returns to a cut-off state, and the light-emitting diode L0 is extinguished; the first capacitor C then starts a new cycle of charging and discharging, and in this cycle, the led L0 operates in the flash mode.
The connection mode and the working process of the B-phase and C-phase charged sensors and the charged indicating circuit are the same as those described above.
In this embodiment, the flashing frequency of the LED L0 is about 2Hz or 3 Hz. The flashing frequency of the led L0 is closely related to the output current of the strip sensor, the capacitance of the first capacitor C, and the breakover voltage of the diac D. Obviously, the flashing frequency of the light emitting diode L0 is most reasonably and simply adjusted by changing the capacity of the first capacitor C.
In the present embodiment, the second capacitor C0 mainly functions to cancel adverse effects of floating potential and harmonics. In the flash mode, the capacity of the second capacitor C0 should be reduced and the withstand voltage should be increased appropriately due to the influence of the first capacitor C and the diac D.
In this embodiment, the capacitance value of the first capacitor C is 10 μ F, and the voltage is 50V.
In the present embodiment, DB3 is used as the diac D.
In the present embodiment, the led L0 emits light with high brightness, and operates in a flashing mode, so that the indication of electrification is clear even if the brightness of the high-voltage switch cabinet is high.
In this embodiment, since the equivalent potential of the charged sensor is very high, usually at least several kilovolts, the series connection of the diac D does not affect the normal operation of the optocoupler P0 and the charged latch circuit.
In this embodiment, the diac D may be replaced with the better performing SMDB 3. SMDB3 adopts the paster encapsulation, sets up 3 and draws forth the foot, need during the assembly with the foot (r), third short circuit after as the other end.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. An electrification indicating circuit using a flash method, comprising: the circuit comprises an optical coupler, a light emitting diode, a bidirectional trigger diode, a first capacitor, a second capacitor, a silicon bridge, a grounding terminal and an input terminal;
bidirectional trigger diode one end is connected with emitting diode is anodal, the bidirectional trigger diode other end respectively with opto-coupler input end negative pole, the positive connection of first electric capacity, opto-coupler input end positive pole is connected with silicon bridge is anodal, first electric capacity negative pole, emitting diode negative pole, silicon bridge negative pole are connected, the other both ends of silicon bridge are connected with input terminal and ground terminal respectively, and input terminal is connected with the electrified sensor output, the second electric capacity both ends are connected with input terminal and ground terminal respectively.
2. A flashlight-type charge indicator circuit according to claim 1, wherein said light emitting diode flashes at a frequency of 2Hz or 3 Hz.
3. The indicating circuit as claimed in claim 1, wherein the first capacitor has a capacitance of 10 μ F and a voltage of 50V.
4. The indicating circuit of claim 1 wherein said diac is DB 3.
5. The indicating circuit of claim 1, wherein the led diode is replaced by an SMDB3, the SMDB3 is packaged in a patch, and 3 pins are provided, and the pin (r) and the pin (c) are short-circuited as the other end during assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020485000.6U CN212031584U (en) | 2020-04-03 | 2020-04-03 | Electrified indicating circuit adopting flash mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020485000.6U CN212031584U (en) | 2020-04-03 | 2020-04-03 | Electrified indicating circuit adopting flash mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212031584U true CN212031584U (en) | 2020-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020485000.6U Active CN212031584U (en) | 2020-04-03 | 2020-04-03 | Electrified indicating circuit adopting flash mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212031584U (en) |
-
2020
- 2020-04-03 CN CN202020485000.6U patent/CN212031584U/en active Active
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