CN103197191A - Multipurpose single phase socket wire-splice detector and application thereof - Google Patents
Multipurpose single phase socket wire-splice detector and application thereof Download PDFInfo
- Publication number
- CN103197191A CN103197191A CN201310076594XA CN201310076594A CN103197191A CN 103197191 A CN103197191 A CN 103197191A CN 201310076594X A CN201310076594X A CN 201310076594XA CN 201310076594 A CN201310076594 A CN 201310076594A CN 103197191 A CN103197191 A CN 103197191A
- Authority
- CN
- China
- Prior art keywords
- switch
- socket
- detector
- stationary contact
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
A multipurpose single phase socket wire-splice detector comprises a shell, a first detection foot, a second detection foot, a third detection food, a control switch, a neon tube, a first resistor, a third resistor, a hand contact and a power detection circuit, wherein the power detection circuit is connected between the first detection foot and the second detection foot, the neon tube and the first resistor are connected between the hand contact and the first detection foot in series, a first stationary contact of the control switch is connected with the third resistor, a second stationary contact of the control switch is connected between the power detection circuit and the second detection foot, and a third stationary contact of the control switch is connected with the third detection foot. The multipurpose single phase socket wire-splice detector is improvement of an existing plug, can be plugged in a single phase two-hole socket or a single phase three-hole socket of the prior art, and detects the wiring condition of the socket through controlling the changing-over of the control switch. Further, the multipurpose single phase socket wire-splice detector is simple in structure, convenient to operate and diversified in function.
Description
Technical field
The present invention relates to household socket pick-up unit field, particularly a kind of multi-usage single-phase socket wire splice detector and application thereof.
Background technology
The architectural electricity engineering construction quality check and accept GB50303-2002 22.1.2 bar to socket wiring do following regulation: single-phase two spring hole scokets, the right hole of faces socket or go up the hole and be connected with phase line, left hole or descend the hole to be connected with zero line; The single-phase three-hole socket, the right hole of faces socket is connected with phase line, and left hole is connected with zero line.
The ground connection (PE) of single-phase three-hole, three-phase four holes and three-phase five spring hole scokets or connecting to neutral (PEN) line are connected on the hole.The ground terminal of socket is not connected with zero terminal.The three-phase socket in same place, the phase sequence unanimity of wiring.
It is current because pencil test structure can't be when not tearing socket panel open, directly at socket panel phase line is carried out whether correct detection of wiring, the easy detection instrument that does not also have to pass through detects the requirement that whether meets above standard exactly to the socket wiring state.
" the socket wire splice detector " once sold on the market is between three pin of test plug, and a dropping resistor and light emitting diode are connected mutually, can only check the potential difference (PD) between adjacent two jacks of socket; Because the wiring state of each pin all can be connected with four situations such as PE, N, L line and not wiring, its array mode has C
4 1C
4 1C
4 1=64 kinds, a kind of because correct wiring has only, check that accuracy is 1/64; Because erroneous judgement efficient height, can not 100% check whether wiring is correct.For example: when the wiring of socket, " faces socket the right phase-connecting wire L, when N, PE two jacks were connected on N line, (or PE) line simultaneously, this detector judgement was correct in employing.Maybe when meeting N(or PE in the face of the right of socket) line, N, when PE two jacks connect the L line simultaneously ", this detector judge also be correct.Often misjudge, so be not used for many years.
Summary of the invention
Fundamental purpose of the present invention is to overcome in the prior art, under the situation of not tearing socket panel open, pencil test structure can't the test socket wiring correct shortcoming whether, a kind of simple in structure, easy to operate multi-usage single-phase socket wire splice detector and application thereof are proposed.
The present invention adopts following technical scheme:
Multi-usage single-phase socket wire splice detector, comprise housing, it is characterized in that: comprise that first detects pin, the second detection pin, a gauge tap, a neon tube, one first resistance, proficiency contact and a power sense circuit, this power sense circuit is connected in first, second and detects between the pin, this neon tube and first resistance string are coupled to hand contact and first and detect between the pin, this gauge tap one end is connected between neon tube and first resistance by one the 3rd resistance, and the other end is connected in power sense circuit and second and detects between the pin.
Further, described power sense circuit includes a phonation circuit, a light emitting diode and one second resistance of series connection successively, and this phonation circuit and second detects pin and links to each other, and this second resistance and first detects pin and links to each other.
Further, described phonation circuit includes an electric capacity, a music IC and a piezoelectric ceramic piece, and this capacitances in series is between the second detection pin and light emitting diode, and this music IC links to each other with the piezoelectric ceramic piece two ends with described electric capacity two ends respectively.
Further, described gauge tap includes a moving contact, one first stationary contact and one second stationary contact, described first stationary contact is connected between neon tube and first resistance by the 3rd resistance, and this second stationary contact is connected between electric capacity and the second detection pin and by this moving contact action and is switched on or switched off being connected between first stationary contact and second stationary contact.
Further, also include the 3rd and detect pin and the 3rd resistance, described gauge tap is provided with the 3rd and detects the 3rd stationary contact that pin links to each other, the 3rd resistance is connected between described first stationary contact and the described neon tube, and disconnects being connected or connecting being connected between first stationary contact and second stationary contact or the 3rd stationary contact between first stationary contact and second stationary contact and the 3rd stationary contact by the action of described moving contact.
Microphony doorbell with multi-usage single-phase socket wire splice detector, it is characterized in that: comprise above-mentioned arbitrary detector, one switch socket and a doorbell switch, the switch in parallel of this doorbell switch and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, and the gauge tap of detector is in and makes second to detect pin and be connected to the 3rd resistance, thereby realizes the microphony doorbell by pressing doorbell switch.
Door and window with multi-usage single-phase socket wire splice detector is reported to the police, it is characterized in that: comprise above-mentioned arbitrary detector, one switch socket and a tongue tube, the switch in parallel of this tongue tube and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, and the gauge tap of detector is in and makes second to detect pin and connect the 3rd resistance, thereby drives the magnet steel action and make reed switch conduction realize that door and window reports to the police by door and window is movable.
Acoustic control unthreaded hole with multi-usage single-phase socket wire splice detector is reported to the police, comprise above-mentioned arbitrary detector, one switch socket and acoustic control light-operated switch, the switch in parallel of this acoustic control light-operated switch and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, and the gauge tap of detector is in and makes second to detect pin and be connected to the 3rd resistance, thereby realizes the acoustic control light control alarm by the conducting of acoustic control light-operated switch.
By the above-mentioned description of this invention as can be known, compared with prior art, the present invention has following beneficial effect:
Multi-usage single-phase socket detector of the present invention is that existing plug is transformed, and can insert single-phase two (three) spring hole scokets of the prior art, switches the wiring situation of coming test socket by gauge tap.Whether the wiring of PE line, N line, L line that can 100% checks socket is correct; Have the test pencil function, can check whether power supply L phase line is in electriferous state; Can make family expenses microphony sound and light alarm doorbell; Can do the microphony door and window reports to the police; Can do the acoustic control light control alarm; Cancellation IC circuit can be used as between domestic hygiene, stair, balcony, energy-saving illumination device at night that the balcony equiluminous is not high.One-piece construction of the present invention is simple, and is easy to operate, diverse in function.
Description of drawings
Fig. 1 is perspective view one of the present invention;
Fig. 2 is perspective view two of the present invention;
Fig. 3 is internal electric conspectus of the present invention (circle flat plug);
Fig. 4 is main circuit schematic diagram of the present invention;
Fig. 5 is in k for gauge tap of the present invention
01The circuit diagram of shelves;
Fig. 6 is in k for gauge tap of the present invention
00The circuit diagram of shelves;
Fig. 7 is in k for gauge tap of the present invention
02The circuit diagram of shelves;
Fig. 8 is that gauge tap of the present invention is from k
02Shelves switch to k
01The circuit diagram of shelves;
Fig. 9 is applied to the schematic diagram of microphony doorbell and door and window warning for the present invention;
Figure 10 is used for the schematic diagram of microphony doorbell for the present invention;
Figure 11 is used for doing the connection layout of acoustic control light control alarm for the present invention;
The synoptic diagram that Figure 12 adopts two pins to detect for the present invention.
Embodiment
Below the invention will be further described by embodiment.
Embodiment one
With reference to Fig. 1-Fig. 4, a kind of multi-usage single-phase socket wire splice detector of the present invention is that existing plug is transformed, and can insert existing single-phase two (three) spring hole scokets.Comprise housing, first detects pin L, second detects pin N, the 3rd detection pin PE, a gauge tap K, a neon tube Ne, one first resistance R 1, proficiency contact A, one the 3rd resistance R 3 and a power sense circuit.These three are detected the pin that pin can adopt existing plug, for example can change the round flat pin of pin angle.
This power sense circuit includes a phonation circuit, a LED and one second resistance R 2 of series connection successively.This phonation circuit includes a capacitor C, a music IC and a piezoelectric ceramic piece H.This capacitor C is series at second and detects between pin N and the LED, and this music IC links to each other with piezoelectric ceramic piece H two ends with the capacitor C two ends respectively, and this second resistance R 2 and first detects pin L and links to each other.This neon tube Ne and first resistance R 1 are series at hand contact A and first and detect between the pin L.
This gauge tap K includes a moving contact, one first stationary contact 0, one second stationary contact 1 and one the 3rd stationary contact 2.The 3rd resistance R 3 one ends link to each other with first stationary contact 0, and the other end is connected between neon tube Ne and first resistance R 1.This second stationary contact 1 is connected in capacitor C and second and detects between the pin N, and the 3rd stationary contact 2 and the 3rd detects pin PE and links to each other, and this gauge tap K includes three gears, is k
00Shelves, k
01Shelves and k
02Shelves disconnect the (k that is connected between first stationary contact 0 and second stationary contact 1 and the 3rd stationary contact 2 by moving contact action respectively
00Grade) or connect first stationary contact 0 and the second stationary contact 1(k
01Grade) or the 3rd stationary contact 2(k
02Shelves) connection between realizes.
The present invention transforms existing single-phase two wires or three pin plug, its circle flat pin can be changed arbitrarily, can insert the flat mixed type socket of various different circles, with reference to Fig. 3, housing is formed by bolt 12 fixed Combination by lower house 10,11 on two, three round flat detection pin N, L, PE are individually fixed in the upper and lower casing 10,11, three spacings that detect between pin L, N, the PE can be adjusted on demand, when the detection pin was set to the flat pin, the direction of flat angle was on request changed.Neon tube Ne, LED, gauge tap K and hand contact A all expose to upper shell 10 surfaces, and music IC, piezoelectric ceramic piece H are fixed in the upper shell 10.
Resistance in the housing should be adjusted according to the related elements error, and concrete resistance and electric capacity span are with reference to as follows: R1=2M Ω-5M Ω, R2=35K Ω-50K Ω, R3=10K Ω, C=100 μ f.
The operation following (cooperating external earth leakage protective device RCD to judge) of adopting the present invention that existing single-phase three-hole socket wiring is detected:
One, whether L, the N jack loop of inspection single-phase socket have potential difference (PD) (220V voltage is namely arranged)
With reference to Fig. 5, detector is inserted socket, and gauge tap K is switched to k
01Shelves if neon tube Ne is bright, then illustrate between this socket L, the N jack to exist potential difference (PD) that normal power source is namely arranged; If LED is bright, simultaneously, piezoelectric ceramic piece H sounds, and also illustrates between this socket L, the N jack to exist potential difference (PD) that normal power source is namely arranged.
Two, check whether the wiring of single-phase socket L phase line is correct
With reference to Fig. 6, K switches to k with gauge tap
00Shelves also insert socket with detector, the hand contact A that leaks outside on the hand contact plug housing, and first resistance R 1 that is connected with the hand contact A is connected to the first detection pin L by neon tube Ne.At this moment, the wiring that the people touches this first resistance R 1, neon tube Ne, the first detection pin L and gang socket L jack forms the loop, is in the test pencil function, if neon tube is shinny, illustrates that socket L jack connects the L phase line.The L phase line wiring that is socket is correct.
Three, check whether the wiring of single-phase socket PE protective wire is correct
With reference to Fig. 7, find between L, N jack normal power source is arranged after, K switches to k with gauge tap
02Shelves, this moment, neon tube Ne provided the action current of electric leakage to outside mutually earth leakage protective device RCD, if earth leakage protective device RCD action illustrates that then socket PE jack connects the PE line, namely the PE line wiring of socket is correct.
Four, whether the connection of inspection zero line N is correct
With reference to Fig. 8, find between L, N jack normal power source is arranged after, K switches to k with change-over switch
02Shelves, earth leakage protective device RCD action, change-over switch is to k again
01Shelves, RCD is failure to actuate if neon tube Ne this moment is bright, illustrates that socket N jack connects the N line, and namely the N line wiring of socket is correct.
Detection pin of the present invention also can be only with wherein two, and be respectively first and detect pin L and second and detect pin N, with reference to Figure 12, the angle of conversion pin, and insert L-N(L-PE, the N-PE of two holes (three holes) socket respectively) and jack, the k of change-over switch K
00, k
01, k
02Each gear is judged the wiring correctness of two holes (or three holes) socket, and concrete steps get final product with reference to above-mentioned one, two, four (or three).
Embodiment two
With reference to Fig. 9, Figure 10, apply the present invention to do doorbell, include the detector of embodiment one, the socket of belt switch K1, the bell button K2 in parallel with K switch 1, detect pin with three of detector of the present invention and insert corresponding jack on the socket respectively, the K switch 1 of socket includes a end and b end, and K switch 2 correspondences are provided with a end and b end.
During use, earlier with the K switch of detector to k
01Shelves insert the individual detection pin of two (or three) of detector in the corresponding jack of socket then, put K switch 1 open circuit of socket.When pressing doorbell switch K2, music IC conducting, capacitor C discharges and recharges, and piezoelectric ceramic piece H sends resonant, is adapted at quiet occasion and makees the microphony doorbell.
With reference to Figure 11, above-mentioned doorbell switch is changed into the acoustic control light-operated switch, other wiring are constant, can realize as the acoustic control light control alarm by triggering the connection of acoustic control light-operated switch.
With reference to Fig. 9, the present invention also can be used as door and window warning usefulness, tongue tube K3 and a magnet steel in parallel between a of socket switch K1, b two ends, a of tongue tube, b end respectively with the corresponding connection of a, b end of socket switch K1.
During use, earlier with the K switch of detector to k
01Shelves, three detection pin with detector insert in the corresponding jack of socket then, put K switch 1 open circuit of socket.When door and window by push-and-pull during to desired location, the magnet steel activity makes tongue tube K3a, the conducting of b two ends, capacitor C discharges and recharges, piezoelectric ceramic piece H sends resonant, is suitable for microphony warning occasion, control capacittance C can set delay time.
In addition, the present invention cancels music IC circuit, insert also can be used as between domestic hygiene in the switch socket, stair, balcony, energy-saving illumination device at night that the balcony equiluminous is not high.
Above-mentioned only is a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (8)
1. multi-usage single-phase socket wire splice detector, comprise housing, it is characterized in that: comprise that first detects pin, the second detection pin, a gauge tap, a neon tube, one first resistance, proficiency contact and a power sense circuit, this power sense circuit is connected in first, second and detects between the pin, this neon tube and first resistance string are coupled to hand contact and first and detect between the pin, this gauge tap one end is connected between neon tube and first resistance by one the 3rd resistance, and the other end is connected in power sense circuit and second and detects between the pin.
2. multi-usage single-phase socket wire splice detector as claimed in claim 1, it is characterized in that: described power sense circuit includes a phonation circuit, a light emitting diode and one second resistance of series connection successively, this phonation circuit and second detects pin and links to each other, and this second resistance and first detects pin and links to each other.
3. multi-usage single-phase socket wire splice detector as claimed in claim 2, it is characterized in that: described phonation circuit includes an electric capacity, a music IC and a piezoelectric ceramic piece, this capacitances in series is between the second detection pin and light emitting diode, and this music IC links to each other with the piezoelectric ceramic piece two ends with described electric capacity two ends respectively.
4. multi-usage single-phase socket wire splice detector as claimed in claim 3, it is characterized in that: described gauge tap includes a moving contact, one first stationary contact and one second stationary contact, described first stationary contact is connected between neon tube and first resistance by the 3rd resistance, and this second stationary contact is connected between electric capacity and the second detection pin and by this moving contact action and is switched on or switched off being connected between first stationary contact and second stationary contact.
5. multi-usage single-phase socket wire splice detector as claimed in claim 4, it is characterized in that: also include the 3rd and detect pin, described gauge tap is provided with the 3rd and detects the 3rd stationary contact that pin links to each other, by being connected or connecting being connected between first stationary contact and second stationary contact or the 3rd stationary contact between described moving contact action disconnection first stationary contact and second stationary contact and the 3rd stationary contact.
6. the microphony doorbell that has multi-usage single-phase socket wire splice detector, it is characterized in that: comprise aforesaid right requirement 1 to 5 described arbitrary detector, one switch socket and a doorbell switch, the switch in parallel of this doorbell switch and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, and the gauge tap of detector is in and makes second to detect pin and be connected to the 3rd resistance, thereby realizes the microphony doorbell by pressing doorbell switch.
7. the door and window that has multi-usage single-phase socket wire splice detector is reported to the police, it is characterized in that: comprise aforesaid right requirement 1 to 5 described arbitrary detector, one switch socket and a tongue tube, the switch in parallel of this tongue tube and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, the gauge tap of detector is in and makes the second detection pin be connected to the 3rd resistance, thereby makes reed switch conduction realize the door and window warning by the action of the movable drive of door and window magnet steel.
8. the acoustic control unthreaded hole that has multi-usage single-phase socket wire splice detector is reported to the police, it is characterized in that: comprise aforesaid right requirement 1 to 5 described arbitrary detector, one switch socket and acoustic control light-operated switch, the switch in parallel of this acoustic control light-operated switch and switch socket, the switch of retainer belt combined socket and switch disconnects, detector is inserted the corresponding jack of this switch socket, the gauge tap of detector is in and makes the second detection pin be connected to the 3rd resistance, thereby realizes the acoustic control light control alarm by the conducting of acoustic control light-operated switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076594.XA CN103197191B (en) | 2013-03-11 | 2013-03-11 | Multipurpose single phase socket wire-splice detector and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076594.XA CN103197191B (en) | 2013-03-11 | 2013-03-11 | Multipurpose single phase socket wire-splice detector and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103197191A true CN103197191A (en) | 2013-07-10 |
| CN103197191B CN103197191B (en) | 2015-01-07 |
Family
ID=48719874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310076594.XA Active CN103197191B (en) | 2013-03-11 | 2013-03-11 | Multipurpose single phase socket wire-splice detector and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103197191B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926504A (en) * | 2014-05-08 | 2014-07-16 | 佛山市新基德电子厂有限公司 | Single-phase plug-type power supply detector |
| CN103954880A (en) * | 2014-05-16 | 2014-07-30 | 佛山市新基德电子厂有限公司 | Single phase plug-type power supply detector |
| CN107315124A (en) * | 2017-06-13 | 2017-11-03 | 韩通振 | A kind of farmland insert row rupture of line suggestion device |
| CN109100607A (en) * | 2018-08-15 | 2018-12-28 | 深圳市华博精测科技有限公司 | socket tester |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128389Y (en) * | 1992-02-28 | 1993-03-17 | 钟茂干 | Electric leakage equipment and " wire sequence " tester for building |
| JPH06213952A (en) * | 1993-01-14 | 1994-08-05 | Sumitomo Electric Ind Ltd | Wiring tester for plug socket |
| GB2344947A (en) * | 1998-12-17 | 2000-06-21 | Beha C Gmbh | Test apparatus for power supply networks |
| CN2476821Y (en) * | 2001-04-20 | 2002-02-13 | 杨志金 | Power detector |
| CN2572412Y (en) * | 2002-09-19 | 2003-09-10 | 李大顺 | Safety electricity use tester |
| CN1800870A (en) * | 2006-01-10 | 2006-07-12 | 刘锦泰 | Single-phase plug type power supply detector |
| CN101059545A (en) * | 2006-04-21 | 2007-10-24 | 王六风 | Multifunctional electric appliance checking device |
| JP2009079959A (en) * | 2007-09-26 | 2009-04-16 | Tempearl Ind Co Ltd | Checker for socket polarity connection |
| CN203084137U (en) * | 2013-03-11 | 2013-07-24 | 厦门辉煌装修工程有限公司 | Multi-purpose single-phase socket connection checker and application thereof |
-
2013
- 2013-03-11 CN CN201310076594.XA patent/CN103197191B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128389Y (en) * | 1992-02-28 | 1993-03-17 | 钟茂干 | Electric leakage equipment and " wire sequence " tester for building |
| JPH06213952A (en) * | 1993-01-14 | 1994-08-05 | Sumitomo Electric Ind Ltd | Wiring tester for plug socket |
| GB2344947A (en) * | 1998-12-17 | 2000-06-21 | Beha C Gmbh | Test apparatus for power supply networks |
| CN2476821Y (en) * | 2001-04-20 | 2002-02-13 | 杨志金 | Power detector |
| CN2572412Y (en) * | 2002-09-19 | 2003-09-10 | 李大顺 | Safety electricity use tester |
| CN1800870A (en) * | 2006-01-10 | 2006-07-12 | 刘锦泰 | Single-phase plug type power supply detector |
| CN101059545A (en) * | 2006-04-21 | 2007-10-24 | 王六风 | Multifunctional electric appliance checking device |
| JP2009079959A (en) * | 2007-09-26 | 2009-04-16 | Tempearl Ind Co Ltd | Checker for socket polarity connection |
| CN203084137U (en) * | 2013-03-11 | 2013-07-24 | 厦门辉煌装修工程有限公司 | Multi-purpose single-phase socket connection checker and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926504A (en) * | 2014-05-08 | 2014-07-16 | 佛山市新基德电子厂有限公司 | Single-phase plug-type power supply detector |
| CN103954880A (en) * | 2014-05-16 | 2014-07-30 | 佛山市新基德电子厂有限公司 | Single phase plug-type power supply detector |
| CN107315124A (en) * | 2017-06-13 | 2017-11-03 | 韩通振 | A kind of farmland insert row rupture of line suggestion device |
| CN109100607A (en) * | 2018-08-15 | 2018-12-28 | 深圳市华博精测科技有限公司 | socket tester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103197191B (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6048927B2 (en) | Power failure detection method, power failure detector, lighting device, and power supply device | |
| CN103197191A (en) | Multipurpose single phase socket wire-splice detector and application thereof | |
| CN102998520A (en) | Digital display high-voltage electroscope of telescopic rod | |
| CN203084137U (en) | Multi-purpose single-phase socket connection checker and application thereof | |
| CN201107352Y (en) | High voltage electrified display safety and defend apparatus | |
| CN102468583A (en) | Control circuit | |
| CN202204869U (en) | Digital display DC electroscope | |
| CN202260135U (en) | Medium-high voltage charge indicator applied in switch cabinet | |
| CN204361335U (en) | A kind of supply socket with plug detection function | |
| CN201247281Y (en) | Electrified detector for simple metal object | |
| CN202565020U (en) | Failure detecting circuit of automatic change-over switch | |
| CN106507535B (en) | The control circuit of high power wall washing lamp | |
| GB2507197A (en) | Emergency lighting system that monitors mains supply by capacitive coupling | |
| CN2906996Y (en) | Wall-mounted power supply socket | |
| RU176977U1 (en) | SAFETY AND OPERATION CONTROL DEVICE 220V | |
| CN103293427B (en) | Electric leakage indicating circuit of electric appliances and electric unit with metal outer shell | |
| CN106410743A (en) | Power supply detection circuit and electronic product | |
| RU185776U1 (en) | DEVICE FOR CONTROL OF OPERATION OF SOCKETS 220 V | |
| CN203275566U (en) | Single-phase short-circuit fault detector | |
| CN112421314A (en) | Plug-and-play power consumption protection device and socket electric appliance | |
| CN2236661Y (en) | Multifunctional electric measuring meter with sound and light indicators | |
| CN201126901Y (en) | Plug with LED indicating lamp | |
| CN202888533U (en) | Novel power socket | |
| CN219554088U (en) | Leakage protection socket | |
| CN103954880A (en) | Single phase plug-type power supply detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |