CN104237581A - Detection device for electronic components in medium and low-voltage equipment - Google Patents
Detection device for electronic components in medium and low-voltage equipment Download PDFInfo
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- CN104237581A CN104237581A CN201310236335.9A CN201310236335A CN104237581A CN 104237581 A CN104237581 A CN 104237581A CN 201310236335 A CN201310236335 A CN 201310236335A CN 104237581 A CN104237581 A CN 104237581A
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Abstract
A detection device for electronic components in medium and low-voltage equipment is used for testing performance of the electronic components in the medium and low-voltage equipment. The detection device comprises a voltage conversion module (110). The voltage conversion module (110) comprises a power input end (111), a voltage transformation unit (112), a first selective switch (113), a rectification filtering unit (114) and a voltage output end (117), wherein the power input end (111) is connected with external industrial voltage sources in sequence, the voltage transformation unit (112) is used for converting voltage of the power input end (111) to different voltage values, the first selective switch (113) is used for selecting one of the different voltage values obtained by conversion through the voltage transformation unit (112) as output voltage, the rectification filtering unit (114) is used for converting alternating voltage selected by the first selective switch (113) for output to be direct voltage, and the voltage output end (117) is connected with the first selective switch (113) or the rectification filtering unit (114) selectively. The detection device can output alternating voltages, direct voltages, alternating currents and direct currents of different numbers, and various detection requirements of the electronic components in the medium and low-voltage equipment can be met.
Description
Technical field
The present invention relates to the field of transmission equipment of electric system, particularly a kind of medium/low-voltage equipment internal electronic element pick-up unit that the electronic component of medium/low-voltage equipment inside is detected.
Background technology
Less to the test measuring ability of used pick-up unit of its internal electronic element in tradition medium/low-voltage equipment, separate unit pick-up unit can not meet the examination requirements of different electronic component simultaneously, electronic component as to be tested in some is when testing, need the detection voltage inputting AC220V, and other electron component is when testing, need the detection voltage inputting DC6V.In this case, usually need to provide the electronic component of multiple stage pick-up unit to medium/low-voltage equipment inside to test, this will certainly affect the detection efficiency of various electronic component simultaneously.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of a kind of medium/low-voltage equipment internal electronic element pick-up unit that can improve testing electronic components efficiency in medium/low-voltage equipment is provided.
A kind of medium/low-voltage equipment internal electronic element pick-up unit, for carrying out performance test to the electronic component of medium/low-voltage equipment inside, comprise voltage transformation module, described voltage transformation module comprises the power input connecting external commercial power potential source successively, by the voltage transformation unit that the voltage transitions of described power input is different magnitude of voltage, a magnitude of voltage in the different magnitudes of voltage selecting voltage transformation unit to be converted to is as the first selector switch of output voltage, the alternating voltage exported selected by first selector switch is converted to the rectification filtering unit of DC voltage and the selectable voltage output end be connected with the first selector switch or rectification filtering unit.
Wherein in an embodiment, described voltage transformation unit is transformer, it comprises the primary coil input end be connected with described power input and the many groups secondary coil output terminal be connected with described first selector switch, described first selector switch has multiple first output terminal and multiple second output terminal, described multiple first output terminal is connected with described rectification filtering unit, and described multiple second output terminal is connected with the voltage output end of described medium/low-voltage equipment internal electronic element pick-up unit.
Wherein in an embodiment, described voltage transformation module also comprises the voltage display unit for showing the magnitude of voltage selected by described first selector switch, and described voltage display unit is connected with one of described first output terminal and described rectification filtering unit.
Wherein in an embodiment, described voltage transformation module also comprises the second selector switch switched voltage alternating current-direct current state, and described second selector switch has selector switch stiff end, selector switch selecting side; Described selector switch stiff end is connected with described voltage display unit, and described selector switch selecting side is connected with one of described rectification filtering unit or described second output terminal.
Wherein in an embodiment, also comprise for connecting described electronic component and described electronic component being carried out to the test module of performance test, described test module comprises for detecting the test lead of described medium/low-voltage equipment internal electronic element and the Test Switchboard for controlling break-make between described test lead and described voltage transformation module, and described test module is connected with described voltage output end.
Wherein in an embodiment, be provided with the change-over switch that can control break-make between described test module and described voltage transformation module between described voltage output end and described test module, described change-over switch has the first stiff end, the second stiff end, the first selecting side, the second selecting side; Described first stiff end is connected with described test module, and described first selecting side is connected with described voltage output end.
Wherein in an embodiment, described power input is also connected with the combined floodgate pilot lamp being used to indicate described test module and described voltage transformation module conducting state and the separating brake pilot lamp being used to indicate described test module and voltage transformation module off-state, described second stiff end is connected with described power input, described second selecting side and described combined floodgate pilot lamp and described separating brake pilot lamp one of them be connected.
Wherein in an embodiment, also comprise the current output module be connected with described test module, described current output module comprises the current displaing unit and overcurrent protection resistance that connect setting successively.
Wherein in an embodiment, described rectification filtering unit is rectifier bridge.
Wherein in an embodiment, described medium/low-voltage equipment internal electronic element pick-up unit also comprises:
Test box, has the host cavity for accommodating described voltage transformation module and guidance panel, described guidance panel is provided with described first selector switch, described voltage display unit, described second selector switch and described change-over switch;
For accommodating the testing cassete of described test module: be connected by wire between described testing cassete with described test box, it is offered the test port for detecting described electronic component;
For tightening up the automatic telescopic line drum of excess wire between described test box and described testing cassete.
Above-mentioned medium/low-voltage equipment internal electronic element pick-up unit, alternating voltage, the DC voltage of exportable different numerical value, can meet the various different inspection demands of different electronic component, and then effectively improve the detection efficiency of these electronic components.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of medium/low-voltage equipment internal electronic element pick-up unit;
Fig. 2 is the structural representation of medium/low-voltage equipment internal electronic element pick-up unit;
Fig. 3 is the schematic diagram of guidance panel on medium/low-voltage equipment internal electronic element pick-up unit;
Its related elements reference numeral is listed as follows:
100, medium/low-voltage equipment internal electronic element pick-up unit; 110, voltage transformation module; 111, power input; 1111, combined floodgate pilot lamp; 1112, separating brake pilot lamp; 1113, isolating switch; 1114, power supply indicating member, 1115, killer switch; 112, voltage transformation unit; 1121, primary coil input end; 1122, secondary coil output terminal; 113, the first selector switch; 1131, the first output terminal; 1132, the second output terminal; 114, rectification filtering unit; 115, voltage display unit; 116, the second selector switch; 1161, selector switch stiff end; 1162, selector switch selecting side; 117, voltage output end; 120, test module; 121, Test Switchboard; 130, change-over switch; 131, the first stiff end; 132, the second stiff end; 133, the first selecting side; 134, the second selecting side; 140, current output module; 141, current displaing unit; 142, overcurrent protection resistance; 150, test box; 151, host cavity; 152, guidance panel; 160, testing cassete; 170, automatic telescopic line drum.
Embodiment
The circuit theory diagrams of the medium/low-voltage equipment internal electronic element pick-up unit 100 shown in please refer to the drawing 1, the external commercial power potential source in one end of this device, the other end is connected with the electronic component of medium/low-voltage equipment inside to be measured, for exporting alternating voltage, the DC voltage of different numerical value, performance test is carried out to measured electronic elements.
Medium/low-voltage equipment internal electronic element pick-up unit 100 includes voltage transformation module 110 and electronic component is carried out to the test module 120 of performance test for connecting electronic component.
Voltage transformation module 110 comprises the power input 111 connecting external commercial power potential source successively, it is the voltage transformation unit 112 of different magnitude of voltage by the voltage transitions of power input 111, a magnitude of voltage in the different magnitudes of voltage selecting voltage transformation unit 112 to be converted to is as the first selector switch 113 of output voltage, the selected alternating voltage exported of first selector switch 113 is converted to the rectification filtering unit 114 of DC voltage and the selectable voltage output end 117 be connected with the first selector switch 113 or rectification filtering unit 114.
Wherein, the external commercial power potential source of power input 111 is generally 380V alternating voltage.Voltage transformation unit 112 is transformer, transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, it mainly comprises primary coil, secondary coil and iron core (magnetic core), wherein, the primary coil input end 1121 of transformer is connected with power input 111, and external industrial 380V voltage source is converted to 6 shunt with the different magnitude of voltage such as 220V, 110V, 36V, 24V, 12V, 6V.Many groups secondary coil output terminal 1122 of transformer is connected with the first selector switch 113.Required magnitude of voltage, by being connected with these 6 voltage dividing branch, finally by the manual switchover of operating personnel to the first selector switch 113, exports by the first selector switch 113.
In order to can either output AC voltage on the output terminal of the first selector switch 113, DC voltage can be exported again, first selector switch 113 has multiple first output terminal 1131 and multiple second output terminal 1132, and multiple first output terminal 1131 is connected with the input end of rectification filtering unit 114.Rectification filtering unit 125 is rectifier bridge structure, and the alternating voltage of input can be passed through filtering, the rectification of four diodes by it, direct voltage output the most at last.And multiple second output terminal 1132 is connected with the voltage output end 117 of medium/low-voltage equipment internal electronic element pick-up unit.
Voltage transformation module 110 also comprises the voltage display unit 115 for showing the magnitude of voltage selected by the first selector switch 113, this voltage display unit 115 can display translation to the actual voltage value on measured electronic elements.Voltage display unit 115 is connected with one of the first output terminal 1131 and rectification filtering unit 114.Voltage display unit 115 in the present embodiment is voltage table.The problem that the measured electronic elements caused in order to avoid the artificial handoff error due to the first selector switch 113 is burned occurs, before carrying out measured electronic elements and medium/low-voltage equipment internal electronic element pick-up unit 100 and carrying out continuity test, need to confirm that whether the output voltage of medium/low-voltage equipment internal electronic element pick-up unit 100 is consistent with measured electronic elements required voltage according to the numerical value of above-mentioned voltage table 115.
The second selector switch 116, second selector switch 116 voltage transformation module 110 is also provided with to voltage alternating current-direct current state switches has selector switch stiff end 1161, selector switch selecting side 1162; Selector switch stiff end 1161 is connected with voltage display unit 115, and selector switch selecting side 1162 is connected with one of rectification filtering unit 114 or second output terminal 1132.In the present embodiment, the second selector switch 116 is ganged switch: when selector switch selecting side 1162 is by when being communicated with between rectification filtering unit 114 with voltage display unit 115, voltage display unit 115 exports DC voltage; When selector switch selecting side 1162 by the second output terminal 1132 with when being communicated with between voltage display unit 115, voltage display unit 115 output AC voltage.
Test module 120 is connected with voltage output end 117.Test module 120 comprises the test lead for detecting medium/low-voltage equipment internal electronic element and the Test Switchboard 121 for controlling break-make between test lead and voltage transformation module 110.By being connected with the test lead on test module 120 by the input end of measured electronic elements, the test under different input voltage experiment condition can be carried out to this electronic component.
The situation of carrying out testing current is needed for some electronic components; medium/low-voltage equipment internal electronic element pick-up unit 100 also comprises the current output module 140 be connected with test module 120, current output module 140 is connected with current displaing unit 141 and overcurrent protection resistance 142 in turn.By being connected with the test lead in current output module 140 and test module 120 respectively by the input end of measured electronic elements, the test under different input current experiment condition can be carried out to this electronic component.
Current displaing unit 141 in the present embodiment is reometer.Overcurrent protection resistance 142 can be fixed value resistance, also can be swept resistance.Input current required on general medium/low-voltage equipment internal electronic element is that 5A(exchanges or direct current); therefore used in the present embodiment overcurrent protection resistance 142 is fixed value resistance; namely after passing through that the first selector switch 113 is switched to 6V; access the above-mentioned current output module 140 with fixed value resistance, on measured electronic elements, just directly can input the electric current of 5A.In addition, when overcurrent protection resistance 142 is swept resistance, make the current value of electric current output needed for measured electronic elements shown on reometer by regulating the resistance of swept resistance.By inputting different current value to measured electronic elements, just power good detection can be carried out by the electronic component higher to input current performance requirement to some.
Also being provided with between voltage output end 117 and test module 120 can optionally by the change-over switch 130 of test module 120 and voltage transformation module 110 conducting or cut-out, and change-over switch 130 has the first selecting side 134, stiff end 131, second stiff end 132, first selecting side 133, second.Wherein, the first stiff end 131 is connected with test module 120, and the first selecting side 133 is connected with voltage output end 117.Power input 111 is also connected with the combined floodgate pilot lamp 1111 being used to indicate test module 120 and voltage transformation module 110 conducting state and the separating brake pilot lamp 1112 being used to indicate test module 130 and voltage transformation module 110 off-state.Second stiff end 132 is connected with power input 111, the second selecting side 133 and combined floodgate pilot lamp 1111 and separating brake pilot lamp 1112 one of them be connected.In the present embodiment, change-over switch 130 is three-way switch, and combined floodgate pilot lamp 1111 and separating brake pilot lamp 1112 are arranged on the external commercial power potential source of 380V.
While the first selecting side 133 is closed, the second selecting side 133 closes, now, conducting between voltage transformation module 110 and test module 120, conducting between combined floodgate pilot lamp 1111 and power input 111, combined floodgate pilot lamp 1111 is lighted, and voltage transformation module 110 exports required voltage value to test module 120; While the first selecting side 133 disconnects, the second selecting side 133 disconnects, and now, voltage transformation module 110 is separated with test module 120, and conducting between separating brake pilot lamp 1112 and power input 111, separating brake pilot lamp 1112 is lighted.
In the present embodiment, power input 111 is provided with for carrying out the isolating switch 1113 of safeguard protection to medium/low-voltage equipment internal electronic element pick-up unit 100 and being used to indicate the power supply indicating member 1114 of pick-up unit 100 conducting of medium/low-voltage equipment internal electronic element or dissengaged positions.Wherein, isolating switch 1113 refers to the electric current that can close, carry and cut-off under normal loop condition, and can close, the switchgear of carrying and the electric current under cut-offfing abnormal loop condition (comprising short circuit condition) in official hour.It can be used to distribute electric energy; implementation protection is carried out to power circuit and built-in function assembly etc.; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.Use isolating switch 1113 can not only ensure the normal operation of medium/low-voltage equipment internal electronic element pick-up unit 100, also can avoid the shock hazard caused due to the maloperation of staff.Thus effectively can strengthen the safety in utilization of medium/low-voltage equipment internal electronic element pick-up unit 100.In addition, this isolating switch 1113 is also equipped with killer switch 1115, can cuts off the whole circuit of medium/low-voltage equipment internal electronic element pick-up unit 100 manually or automatically and conducting control.In addition, power supply indicating member 1114 is also parallel with in the rear end of isolating switch 1113, for showing the state that is turned on or off of medium/low-voltage equipment internal electronic element pick-up unit 100, wherein, power supply indicating member 1114 can be the element that alarm bell or warning lamp etc. have alarm function, and power supply indicating member 1114 is in the present embodiment preferably warning lamp.
Figure 2 shows that the structural representation of medium/low-voltage equipment internal electronic element pick-up unit 100, this pick-up unit 100 for accommodate voltage transformation module 110, manual operation medium/low-voltage equipment internal electronic element pick-up unit 100 operation and performance test is carried out to measured electronic elements.This device comprise for accommodate voltage transformation module 110 and the test box 150 that measured electronic elements is detected, for accommodating the testing cassete 160 of test module 120.Wherein, test box 150 has host cavity 151 for accommodating voltage transformation module 110 and guidance panel 152.Fig. 3 be the present embodiment medium/low-voltage equipment pick-up unit on the schematic diagram of guidance panel, guidance panel 152 is respectively arranged with power supply indicating member 1114, killer switch 1115, first selector switch 113, voltage display unit 115, second selector switch 116 and change-over switch 130.Being connected by wire between testing cassete 160 with test box 150, testing cassete 160 being offered for controlling the Test Switchboard 121 of the break-make on test module 120 between test lead and voltage transformation module 110 and the test port for detected electrons element.
In addition, in test process, the conveniently remote mobile test of testing cassete 160, needs reserved unnecessary wire to meet this requirement between test box 150 and testing cassete 160.Therefore, medium/low-voltage equipment internal electronic element pick-up unit 100 is also provided with the automatic telescopic line drum 170 for these wires.When not testing, unnecessary wire by the inside of tightening up at automatic telescopic line drum 170, thus guarantees the 5S requirement of working environment.
The use operation steps of above medium/low-voltage equipment internal electronic element pick-up unit 100 is as follows:
1, when measured electronic elements needs to test, the electric pressure of measured electronic elements required input is first determined;
2, the killer switch 1115 on closed test box 150 guidance panel 152, at this moment power supply indicating member 1114 warning lamp is lighted;
3, according to fixed measured electronic elements required voltage level adjustment first selector switch 113, if that is, the maximum input voltage of measured electronic elements or full test voltage are 220V, the knob of the first selector switch 113 can be switched to the position of 220V;
4, according to interchange or the direct current situation of measured electronic elements required voltage, by the second selector switch 116, the output voltage of medium/low-voltage equipment internal electronic element pick-up unit 100 is set as exchanging or DC state;
5, confirm that whether the output voltage of medium/low-voltage equipment internal electronic element pick-up unit 100 is consistent with measured electronic elements required voltage according to the numerical value of voltage display unit 115;
6, the voltage output of medium/low-voltage equipment internal electronic element pick-up unit 100 pairs of test boxs 150 is controlled by change-over switch 130, when the first selecting side 133 closes, combined floodgate pilot lamp 1111 is lighted, and testing cassete 160 is charged, can to measured electronic elements output detections voltage; Now, measured electronic elements is connected on the test port of testing cassete 160: if when measured electronic elements needs input voltage source, by being directly communicated with the corresponding test port on testing cassete 160 by the input end of measured electronic elements, the voltage tester under different experimental conditions can be carried out to this electronic component.If when measured electronic elements needs input current source, after this electronic component is connected with current output module 140, then be communicated with the corresponding test port on testing cassete 160, the testing current under different experimental conditions can be carried out this electronic component.
7, by the closed Test Switchboard 121 be arranged on testing cassete 160, measured electronic elements tested and debugs, thus judging whether this electronic component meets standard.
Medium/low-voltage equipment internal electronic element pick-up unit 100 is in operational process, if when heavy overload or short circuit and the abnormal failure such as under-voltage appear in the circuit of this proving installation 100, the killer switch 1115 be arranged on power input 111 can automatic shutdown circuit.After the fault getting rid of this proving installation 100, manual operation is needed to make it to recover conducting state.In addition, killer switch 1115 also can be disconnected by manual operation.
The medium/low-voltage equipment internal electronic element pick-up unit of the present embodiment, the alternating voltage exporting different numerical value can be passed through: AC220V, AC110V, AC36V, AC24V, AC12V, AC6V, DC voltage: the ac and dc current of DC220V, DC110V, DC36V, DC24V, DC12V, DC6V and 5A, with the various different inspection demands of satisfied different measured electronic elements.Compared with the pick-up unit of traditional medium/low-voltage equipment internal electronic element, it does not need to provide the pick-up unit of the different test voltage of multiple stage or electric current to test measured electronic elements simultaneously, thus improves the detection efficiency of measured electronic elements.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a medium/low-voltage equipment internal electronic element pick-up unit, for carrying out performance test to the electronic component of medium/low-voltage equipment inside, it is characterized in that, comprise voltage transformation module (110), described voltage transformation module (110) comprises the power input (111) connecting external commercial power potential source successively, it is the voltage transformation unit (112) of different magnitude of voltage by the voltage transitions of described power input (111), a magnitude of voltage in the different magnitudes of voltage selecting voltage transformation unit (112) to be converted to is as first selector switch (113) of output voltage, selected for first selector switch (113) alternating voltage exported is converted to the rectification filtering unit (114) of DC voltage and the selectable voltage output end (117) be connected with the first selector switch (113) or rectification filtering unit (114).
2. medium/low-voltage equipment internal electronic element pick-up unit according to claim 1, it is characterized in that, described voltage transformation unit (112) is transformer, it comprises the primary coil input end (1121) be connected with described power input (111) and the many groups secondary coil output terminal (1122) be connected with described first selector switch (113), described first selector switch (113) has multiple first output terminal (1131) and multiple second output terminal (1132), described multiple first output terminal (1131) is connected with described rectification filtering unit (114), described multiple second output terminal (1132) is connected with the voltage output end (117) of described medium/low-voltage equipment internal electronic element pick-up unit.
3. medium/low-voltage equipment internal electronic element pick-up unit according to claim 2, it is characterized in that, described voltage transformation module (110) also comprises the voltage display unit (115) for showing the magnitude of voltage selected by described first selector switch (113), and described voltage display unit (115) is connected with one of described first output terminal (1131) and described rectification filtering unit (114).
4. medium/low-voltage equipment internal electronic element pick-up unit according to claim 3, it is characterized in that, described voltage transformation module (110) also comprises the second selector switch (116) switched voltage alternating current-direct current state, and described second selector switch (116) has selector switch stiff end (1161), selector switch selecting side (1162); Described selector switch stiff end (1161) is connected with described voltage display unit (115), and described selector switch selecting side (1162) is connected with one of described rectification filtering unit (114) or described second output terminal (1132).
5. medium/low-voltage equipment internal electronic element pick-up unit according to claim 1, it is characterized in that, also comprise for connecting described electronic component and described electronic component being carried out to the test module (120) of performance test, described test module (120) comprises the test lead for detecting described medium/low-voltage equipment internal electronic element and the Test Switchboard (121) for controlling break-make between described test lead and described voltage transformation module (110), and described test module (120) is connected with described voltage output end (117).
6. medium/low-voltage equipment internal electronic element pick-up unit according to claim 5, it is characterized in that, be provided with the change-over switch (130) that can control break-make between described test module (120) and described voltage transformation module (110) between described voltage output end (117) and described test module (120), described change-over switch (130) has the first stiff end (131), the second stiff end (132), the first selecting side (133), the second selecting side (134); Described first stiff end (131) is connected with described test module (120), and described first selecting side (133) is connected with described voltage output end (117).
7. medium/low-voltage equipment internal electronic element pick-up unit according to claim 6, it is characterized in that, described power input (111) is also connected with the combined floodgate pilot lamp (1111) being used to indicate described test module (120) and described voltage transformation module (110) conducting state and the separating brake pilot lamp (1112) being used to indicate described test module (130) and voltage transformation module (110) off-state, described second stiff end (132) is connected with described power input (111), described second selecting side (133) and described combined floodgate pilot lamp (1111) and described separating brake pilot lamp (1112) one of them be connected.
8. medium/low-voltage equipment internal electronic element pick-up unit according to claim 1; it is characterized in that; also comprise the current output module (140) be connected with described test module (120), described current output module (140) comprises the current displaing unit (141) and overcurrent protection resistance (142) that connect setting successively.
9. medium/low-voltage equipment internal electronic element pick-up unit according to claim 4, is characterized in that, described rectification filtering unit (114) is rectifier bridge.
10. medium/low-voltage equipment internal electronic element pick-up unit according to claim 1, is characterized in that, also comprise:
Test box (150), there is the host cavity (151) for accommodating described voltage transformation module (110) and guidance panel (152), described guidance panel (152) being provided with described first selector switch (113), described voltage display unit (115), described second selector switch (116) and described change-over switch (130);
For accommodating the testing cassete (160) of described test module (120): being connected by wire between described testing cassete (160) with described test box (150), it being offered the test port for detecting described electronic component;
For tightening up automatic telescopic line drum (170) of excess wire between described test box (150) and described testing cassete (160).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310236335.9A CN104237581B (en) | 2013-06-14 | 2013-06-14 | Medium/low-voltage equipment internal electronic element detection means |
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| CN201310236335.9A CN104237581B (en) | 2013-06-14 | 2013-06-14 | Medium/low-voltage equipment internal electronic element detection means |
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| CN2281603Y (en) * | 1996-07-20 | 1998-05-13 | 刘社立 | Multifunctional distributing box for school |
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| CN201107340Y (en) * | 2007-11-06 | 2008-08-27 | 青岛艾诺智能仪器有限公司 | Multiplex high efficiency integrated tester |
| TW201035568A (en) * | 2009-03-19 | 2010-10-01 | Chroma Ate Inc | Contact checking system for an object under test |
| CN203519676U (en) * | 2013-06-14 | 2014-04-02 | 泰豪科技(深圳)电力技术有限公司 | Detection device for electronic components in middle-and-low-voltage equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122395U (en) * | 1992-05-19 | 1992-11-18 | 左孝臣 | Multifunctional electronic circuit tester |
| CN2281603Y (en) * | 1996-07-20 | 1998-05-13 | 刘社立 | Multifunctional distributing box for school |
| US6232675B1 (en) * | 1998-11-14 | 2001-05-15 | Hewlett-Packard Company | Power distribution apparatus comprising relay devices for controlling current flow along power paths of the power distribution apparatus |
| CN200996991Y (en) * | 2007-01-26 | 2007-12-26 | 北京锐安科技有限公司 | Switch power-supply tester |
| CN201107340Y (en) * | 2007-11-06 | 2008-08-27 | 青岛艾诺智能仪器有限公司 | Multiplex high efficiency integrated tester |
| TW201035568A (en) * | 2009-03-19 | 2010-10-01 | Chroma Ate Inc | Contact checking system for an object under test |
| CN203519676U (en) * | 2013-06-14 | 2014-04-02 | 泰豪科技(深圳)电力技术有限公司 | Detection device for electronic components in middle-and-low-voltage equipment |
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| CN104237581B (en) | 2017-08-08 |
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