CN204479642U - Can the electrification in high voltage indicating circuit of trigger protection - Google Patents
Can the electrification in high voltage indicating circuit of trigger protection Download PDFInfo
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- CN204479642U CN204479642U CN201520084298.9U CN201520084298U CN204479642U CN 204479642 U CN204479642 U CN 204479642U CN 201520084298 U CN201520084298 U CN 201520084298U CN 204479642 U CN204479642 U CN 204479642U
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Abstract
The utility model relates to electric device maintenance technical field, disclose a kind of can the electrification in high voltage indicating circuit of trigger protection.Described can the electrification in high voltage indicating circuit of trigger protection; a fast conducting protection circuit is configured with between two induction pole plates in sensing unit; when sensing units sense is to instantaneous pressure; too high voltages can be dredged in time; the normal work of protection display module; guarantee the accuracy of potential indicator, reduce potential safety hazard.
Description
Technical field
The utility model relates to electric device maintenance technical field, particularly, relate to a kind of can the electrification in high voltage indicating circuit of trigger protection.
Background technology
High-voltage potential indicator is that one is directly installed on indoor electric equipment, and whether display Devices to test directly perceived is with the indicative safety feature of working voltage.The high-voltage potential indicator of current use can be divided into active and passive two kinds by mode of operation, and the former needs additional power source powered operation, and latter, without the need to additional power source, utilizes autonomous induction signal to provide working power.The high-voltage potential indicator of passive mode is adopted to have the advantages such as simple, the easy to maintenance and long service life of structure.
Existing passive high voltage potential indicator is primarily of voltage induced module and display module composition, its principle of work is: voltage induced module in safe range, untouchable from treating that side apparatus obtains inductive energy, then inductive energy is passed on the flash component of display module, whether charged by the luminous situation instruction Devices to test of flash component.When Devices to test is charged, flash component finally obtains inductive energy, and luminous instruction Devices to test is charged; When Devices to test is without electricity, then flash component is without instruction.But prior art seldom considers the self-protection of potential indicator; because high-voltage potential indicator is generally used for the charged situation detecting high voltage electric power equip ment; when Devices to test to be suddenly in because of fault too high voltages or voltage induced module and Devices to test suddenly lean near time; too high voltage will be sensed instantaneously; not only may damage the display module of high-voltage potential indicator; the mistake instruction without electricity also may be provided because display module is damaged; mislead testing staff, there is certain potential safety hazard.
For the safety problem of above-mentioned passive high voltage potential indicator; need the self-protection design considering electrification in high voltage indicating circuit; make high-voltage potential indicator can dredge too high voltages in time when responding to instantaneous pressure; protection display module normally works; guarantee the accuracy of potential indicator, reduce potential safety hazard.
Utility model content
For the safety problem of aforesaid passive high-voltage potential indicator; this practical information provide a kind of can the electrification in high voltage indicating circuit of trigger protection; make high-voltage potential indicator possess respond to instantaneous pressure time self-protection ability; dredge too high voltages in time; the normal work of protection display module; guarantee the accuracy of potential indicator, reduce potential safety hazard.
The technical solution adopted in the utility model, provide a kind of can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, comprising: the sensing unit connected successively, trigger protection unit, rectification stable pressuring unit and indicating member; Described sensing unit comprises the first induction pole plate GB1 and second induction pole plate GB2; Described trigger protection unit comprises resistance R1, resistance R2, electric capacity C1, bilateral diode DIAC1 and bidirectional triode thyristor pipe T1; The described first induction pole plate GB1 first end of contact resistance R1 and the first end of bidirectional triode thyristor pipe T1 simultaneously, second induction pole plate GB2 connects the first end of electric capacity C1 and second end of bidirectional triode thyristor pipe T1 simultaneously, the second end first end of contact resistance R2 and second end of electric capacity C1 simultaneously of resistance R1, second end of resistance R2 connects the first end of bilateral diode DIAC1, and second end of bilateral diode DIAC1 connects the trigger end of bidirectional triode thyristor pipe T1.When sensing instantaneous pressure between described first induction pole plate GB1 and second induction pole plate GB2; the electric current produced carries out rapid charge to electric capacity C1; make bilateral diode DIAC1 fast conducting; produce trigger voltage/current signal that forward position apprentice's degree is high; and then make bidirectional triode thyristor pipe T1 fast conducting, reduce the too high voltages between two induction pole plates, the normal work of final protection display module; guarantee the accuracy of potential indicator, reduce potential safety hazard.
Concrete, described rectification stable pressuring unit comprises diode D1, diode D2, diode D3, diode D4 and electric capacity C1; The anode of described diode D1 connects the first end of bidirectional triode thyristor pipe T1 and the negative electrode of diode D2 simultaneously, the negative electrode of diode D1 connects the negative electrode of diode D4, the anode of diode D2 connects the anode of diode D3, the negative electrode of diode D3 connects second end of bidirectional triode thyristor pipe T1 and the anode of diode D4 simultaneously, the negative electrode of diode D1 also connects the first end of electric capacity C2 simultaneously, and the anode of diode D2 also connects second end of electric capacity C2 simultaneously.Described diode D1, diode D2, diode D3 and diode D4 form a bridge rectifier circuit, inductive energy that sensing unit can be obtained, that have alternating current form is converted into the inductive energy of direct current form, and in the charging of electric capacity C1 place, store enough inductive energy to drive indicating member.
Optimize, described electrification in high voltage indicating circuit also comprises and is being connected on the amplifying unit between trigger protection unit and rectification stable pressuring unit.Described amplifying unit is coil transformer E1; Primary winding number of described coil transformer E1 is greater than the by-pass number of turns, and the first end of primary winding connects the first end of bidirectional triode thyristor pipe T1, and second end of primary winding connects second end of bidirectional triode thyristor pipe T1.The alternating voltage that described amplifying unit arrives for amplifying sensing units sense, so that rectification stable pressuring unit can normally work.
Concrete further, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R3 and LED 1; The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R3 of unidirectional thyristor SCR1, the anode of the second connecting luminous diode LED1 of resistance R3, the negative electrode of LED 1 connects second end of electric capacity C2.
Or a nearly step is concrete, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R4 and hummer BELL1; The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R4 of unidirectional thyristor SCR1, second end of resistance R4 connects the first end of hummer BELL1, and second end of hummer BELL1 connects second end of electric capacity C2.
To sum up; adopt provided by the utility model can the electrification in high voltage indicating circuit of trigger protection; a fast conducting protection circuit is configured with between two induction pole plates in sensing unit; when sensing units sense is to instantaneous pressure; too high voltages can be dredged in time; the normal work of protection display module, guarantees the accuracy of potential indicator, reduces potential safety hazard.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 be the utility model embodiment provide the first can the electrification in high voltage indicating circuit of trigger protection.
Fig. 2 is that the second of providing of the utility model embodiment can the electrification in high voltage indicating circuit of trigger protection.
Embodiment
Hereinafter with reference to accompanying drawing, by way of example describe that the utility model provides in detail can the electrification in high voltage indicating circuit of trigger protection.It should be noted that at this, the explanation for these way of example understands the utility model for helping, but does not form restriction of the present utility model.
Various technology described herein may be used for but is not limited to electric device maintenance technical field, can also be used for other similar field.
Term " positive pole " and " anode " are often used interchangeably in the text herein, and term " negative pole " and " negative electrode " are often used interchangeably in the text.Term "and/or" herein, it is only a kind of incidence relation describing affiliated partner, three kinds of relations can be there are in expression, such as, A and/or B, can represent: individualism A, individualism B, there are A and B tri-kinds of situations simultaneously, herein term " or/and " be describe another kind of affiliated partner relation, can there are two kinds of relations in expression, such as, A is or/and B, can represent: individualism A, individualism A and B two kinds of situations, in addition, character "/" herein, general expression forward-backward correlation is to liking a kind of "or" relation.
Embodiment one, Fig. 1 show that the present embodiment provides the first can the electrification in high voltage indicating circuit of trigger protection.Described can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, comprising: the sensing unit connected successively, trigger protection unit, rectification stable pressuring unit and indicating member; Described sensing unit comprises the first induction pole plate GB1 and second induction pole plate GB2; Described trigger protection unit comprises resistance R1, resistance R2, electric capacity C1, bilateral diode DIAC1 and bidirectional triode thyristor pipe T1; The described first induction pole plate GB1 first end of contact resistance R1 and the first end of bidirectional triode thyristor pipe T1 simultaneously, second induction pole plate GB2 connects the first end of electric capacity C1 and second end of bidirectional triode thyristor pipe T1 simultaneously, the second end first end of contact resistance R2 and second end of electric capacity C1 simultaneously of resistance R1, second end of resistance R2 connects the first end of bilateral diode DIAC1, and second end of bilateral diode DIAC1 connects the trigger end of bidirectional triode thyristor pipe T1.When checkout equipment is charged, described sensing unit in safe range, untouchable from treating that side apparatus obtains the inductive energy of alternating current form, then by rectification stable pressuring unit, described inductive energy is transformed to galvanic form, to drive indicating member normally to work, instruction Devices to test is charged.The principle of work of described trigger protection unit is: when sensing instantaneous pressure between described first induction pole plate GB1 and second induction pole plate GB2; the electric current produced carries out rapid charge to electric capacity C1; make bilateral diode DIAC1 fast conducting; produce trigger voltage/current signal that forward position apprentice's degree is high; and then make bidirectional triode thyristor pipe T1 fast conducting; reduce the too high voltages between two induction pole plates; the normal work of final protection display module; guarantee the accuracy of potential indicator, reduce potential safety hazard.
Concrete, described rectification stable pressuring unit comprises diode D1, diode D2, diode D3, diode D4 and electric capacity C1; The anode of described diode D1 connects the first end of bidirectional triode thyristor pipe T1 and the negative electrode of diode D2 simultaneously, the negative electrode of diode D1 connects the negative electrode of diode D4, the anode of diode D2 connects the anode of diode D3, the negative electrode of diode D3 connects second end of bidirectional triode thyristor pipe T1 and the anode of diode D4 simultaneously, the negative electrode of diode D1 also connects the first end of electric capacity C2 simultaneously, and the anode of diode D2 also connects second end of electric capacity C2 simultaneously.Described diode D1, diode D2, diode D3 and diode D4 form a bridge rectifier circuit, inductive energy that sensing unit can be obtained, that have alternating current form is converted into the inductive energy of direct current form, and in the charging of electric capacity C1 place, store enough inductive energy to drive indicating member.
Concrete further, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R3 and LED 1; The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R3 of unidirectional thyristor SCR1, the anode of the second connecting luminous diode LED1 of resistance R3, the negative electrode of LED 1 connects second end of electric capacity C2.
Or a nearly step is concrete, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R4 and hummer BELL1; The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R4 of unidirectional thyristor SCR1, second end of resistance R4 connects the first end of hummer BELL1, and second end of hummer BELL1 connects second end of electric capacity C2.
Indicating member in the present embodiment provides above-mentioned two kinds of indicating circuit structures, indicating member comprising LED 1 is provided with luminous prompting branch road (resistance R3 and LED 1), when Devices to test is charged, Devices to test can be indicated charged by luminescence; And the indicating member comprising hummer BELL1 is provided with auditory tone cues branch road (resistance R4 and hummer BELL1), when Devices to test is charged, Devices to test can be indicated charged by sounding.As what optimize, as shown in Figure 1, namely indicating member described in the present embodiment includes luminous prompting branch road (resistance R3 and LED 1), also include auditory tone cues branch road (resistance R4 and hummer BELL1), Devices to test can be indicated whether charged by sound and light, when can avoid that a prompting branch road breaks down wherein, still can be whether charged by another prompting branch road instruction Devices to test, guarantee the accuracy of electrification display.
The principle of work of the electrification in high voltage indicating circuit that embodiment one provides is as follows: because described first induction pole plate GB1 is different with the current potential of the second induction pole plate GB2 present position, utilize high voltage induction principle can obtain inductive energy non-contactly from Devices to test, thus make sensing unit be equivalent to an induced voltage sources.Described trigger protection unit is used for when induced voltage sports high pressure, reduces too high voltages in time, protects follow-up circuit.Simultaneously because power equipment adopts alternating current transmission, therefore described rectification stable pressuring unit is used for the inductive energy inductive energy of alternating current form being converted into direct current form, DC voltage after rectification carries out charging and filtering at electric capacity C2 place, along with the rising of electric capacity C2 both end voltage, when reaching first object voltage, stabilivolt DZ1 and diode D5 conducting, thus be the gate pole input trigger voltage/electric current of unidirectional thyristor SCR1, make conducting between the anode of unidirectional thyristor SCR1 and negative electrode, electric capacity C1 discharges and drives LED 1 luminescence and drive hummer BELL1 sounding, thus indicate Devices to test charged by luminous and sounding two kinds of modes.Electric capacity C2 declines through overdischarge both end voltage, stabilivolt DZ1 and diode D5 ends, also end between the anode of unidirectional thyristor SCR1 and negative electrode, electric capacity C2 enters into charging process again. when Devices to test is charged, the charging and discharging that electric capacity C2 circulates, thus enough inductive energy (namely electric capacity C2 both end voltage reaches first object voltage) can be saved bit by bit, and effectively drive LED 1 normal luminous and drive the normal sounding of hummer BELL1.
What describe described in the present embodiment can the electrification in high voltage indicating circuit of trigger protection; a fast conducting protection circuit is configured with between two induction pole plates in sensing unit; when sensing units sense is to instantaneous pressure; too high voltages can be reduced in time; the normal work of protection display module; guarantee the accuracy of potential indicator, reduce potential safety hazard.
Embodiment two, Fig. 2 shows the second that the present embodiment provides can the electrification in high voltage indicating circuit of trigger protection.What embodiment two provided can the difference of electrification in high voltage indicating circuit of trigger protection being of providing of the electrification in high voltage indicating circuit of trigger protection and embodiment one: described electrification in high voltage indicating circuit also comprises and is being connected on the amplifying unit between trigger protection unit and rectification stable pressuring unit.The alternating voltage that described amplifying unit arrives for amplifying sensing units sense, so that rectification stable pressuring unit can normally work.
Concrete, described amplifying unit is coil transformer E1; Primary winding number of described coil transformer E1 is greater than the by-pass number of turns, and the first end of primary winding connects the first end of bidirectional triode thyristor pipe T1, and second end of primary winding connects second end of bidirectional triode thyristor pipe T1.
Concrete, described rectification stable pressuring unit comprises diode D1, diode D2, diode D3, diode D4 and electric capacity C1; The anode of described diode D1 is one end of secondary coil of connecting coil transformer E1 and the negative electrode of diode D2 simultaneously, the negative electrode of diode D1 connects the negative electrode of diode D4, the anode of diode D2 connects the anode of diode D3, the negative electrode of diode D3 is the other end of secondary coil of connecting coil transformer E1 and the anode of diode D4 simultaneously, the negative electrode of diode D1 also connects the first end of electric capacity C2 simultaneously, and the anode of diode D2 also connects second end of electric capacity C2 simultaneously.
On the technique effect basis of embodiment one, the technique effect of embodiment two also has: adopt coil transformer E1 as amplifying unit, the induced voltage of sensing unit can be promoted, rectification stable pressuring unit is normally worked.
As mentioned above, the utility model can be realized preferably.For a person skilled in the art, according to instruction of the present utility model, designing multi-form the electrification in high voltage indicating circuit of trigger protection can not need performing creative labour.When not departing from principle of the present utility model and spirit, these embodiments being changed, revising, replace, integrate and modification still falls in protection domain of the present utility model.
Claims (7)
1. can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, comprising: the sensing unit connected successively, trigger protection unit, rectification stable pressuring unit and indicating member;
Described sensing unit comprises the first induction pole plate GB1 and second induction pole plate GB2;
Described trigger protection unit comprises resistance R1, resistance R2, electric capacity C1, bilateral diode DIAC1 and bidirectional triode thyristor pipe T1;
The described first induction pole plate GB1 first end of contact resistance R1 and the first end of bidirectional triode thyristor pipe T1 simultaneously, second induction pole plate GB2 connects the first end of electric capacity C1 and second end of bidirectional triode thyristor pipe T1 simultaneously, the second end first end of contact resistance R2 and second end of electric capacity C1 simultaneously of resistance R1, second end of resistance R2 connects the first end of bilateral diode DIAC1, and second end of bilateral diode DIAC1 connects the trigger end of bidirectional triode thyristor pipe T1.
2. as claimed in claim 1 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described rectification stable pressuring unit comprises diode D1, diode D2, diode D3, diode D4 and electric capacity C1;
The anode of described diode D1 connects the first end of bidirectional triode thyristor pipe T1 and the negative electrode of diode D2 simultaneously, the negative electrode of diode D1 connects the negative electrode of diode D4, the anode of diode D2 connects the anode of diode D3, the negative electrode of diode D3 connects second end of bidirectional triode thyristor pipe T1 and the anode of diode D4 simultaneously, the negative electrode of diode D1 also connects the first end of electric capacity C2 simultaneously, and the anode of diode D2 also connects second end of electric capacity C2 simultaneously.
3. as claimed in claim 1 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described electrification in high voltage indicating circuit also comprises and is being connected on the amplifying unit between trigger protection unit and rectification stable pressuring unit.
4. as claimed in claim 3 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described amplifying unit is coil transformer E1;
Primary winding number of described coil transformer E1 is greater than the by-pass number of turns, and the first end of primary winding connects the first end of bidirectional triode thyristor pipe T1, and second end of primary winding connects second end of bidirectional triode thyristor pipe T1.
5. as claimed in claim 4 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described rectification stable pressuring unit comprises diode D1, diode D2, diode D3, diode D4 and electric capacity C1;
The anode of described diode D1 is one end of secondary coil of connecting coil transformer E1 and the negative electrode of diode D2 simultaneously, the negative electrode of diode D1 connects the negative electrode of diode D4, the anode of diode D2 connects the anode of diode D3, the negative electrode of diode D3 is the other end of secondary coil of connecting coil transformer E1 and the anode of diode D4 simultaneously, the negative electrode of diode D1 also connects the first end of electric capacity C2 simultaneously, and the anode of diode D2 also connects second end of electric capacity C2 simultaneously.
6. as described in claim 2 or 5 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R3 and LED 1;
The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R3 of unidirectional thyristor SCR1, the anode of the second connecting luminous diode LED1 of resistance R3, the negative electrode of LED 1 connects second end of electric capacity C2.
7. as described in claim 2 or 5 can the electrification in high voltage indicating circuit of trigger protection, it is characterized in that, described indicating member comprises stabilivolt DZ1, diode D5, unidirectional thyristor SCR1, resistance R4 and hummer BELL1;
The negative electrode of described stabilivolt DZ1 connects first end and the unidirectional thyristor SCR1 anode of electric capacity C2 simultaneously, the anode of stabilivolt DZ1 connects the anode of diode D5, the negative electrode of diode D5 connects the gate pole of unidirectional thyristor SCR1, the first end of the negative electrode contact resistance R4 of unidirectional thyristor SCR1, second end of resistance R4 connects the first end of hummer BELL1, and second end of hummer BELL1 connects second end of electric capacity C2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520084298.9U CN204479642U (en) | 2015-02-06 | 2015-02-06 | Can the electrification in high voltage indicating circuit of trigger protection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520084298.9U CN204479642U (en) | 2015-02-06 | 2015-02-06 | Can the electrification in high voltage indicating circuit of trigger protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635022A (en) * | 2015-02-06 | 2015-05-20 | 四川蓝讯宝迩电子科技有限公司 | High-voltage live indicating device with trigger protection function |
-
2015
- 2015-02-06 CN CN201520084298.9U patent/CN204479642U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635022A (en) * | 2015-02-06 | 2015-05-20 | 四川蓝讯宝迩电子科技有限公司 | High-voltage live indicating device with trigger protection function |
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Granted publication date: 20150715 Termination date: 20160206 |