CN105223491A - A kind of driving protects simulating test device - Google Patents

A kind of driving protects simulating test device Download PDF

Info

Publication number
CN105223491A
CN105223491A CN201510614081.9A CN201510614081A CN105223491A CN 105223491 A CN105223491 A CN 105223491A CN 201510614081 A CN201510614081 A CN 201510614081A CN 105223491 A CN105223491 A CN 105223491A
Authority
CN
China
Prior art keywords
connector
pin
igbt module
switch
battery
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
Application number
CN201510614081.9A
Other languages
Chinese (zh)
Other versions
CN105223491B (en
Inventor
万玉山
陈艳秋
黄利
王莉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou University
Original Assignee
Changzhou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou University filed Critical Changzhou University
Priority to CN201510614081.9A priority Critical patent/CN105223491B/en
Publication of CN105223491A publication Critical patent/CN105223491A/en
Application granted granted Critical
Publication of CN105223491B publication Critical patent/CN105223491B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Pinball Game Machines (AREA)

Abstract

The present invention relates to a kind of driving and protect simulating test device, comprise IGBT module, drive plate, control panel, power panel, the first simulation test circuit, the second simulation test circuit and the 3rd simulation test circuit.By arranging simulation test logic in control panel software, under the control power supply of low-voltage, implementing test, before drive plate installs machine, completing the test driving defencive function, effectively prevent the scaling loss that IGBT module causes because of shielding failure, safety and reliability.Completed the break-make of circuit by switching toggle, do not need frequent plug-in connector.By the confirmation of external connection battery advanced row line break-make before the test begins, the loose contact that when preventing cable from accessing connector, pressure skin causes, affects test result.

Description

A kind of driving protects simulating test device
Technical field
The present invention relates to trolley coach supply unit wiring board detection field, specifically a kind of driving protects simulating test device.
Background technology
Driving circuit, between main circuit and control circuit, is used for amplifying the signal of control circuit.Trolley coach supply unit driving circuit core is made up of the IGBT module (formation three-phase bridge type inverse) of six single tubes and drive plate; drive plate is mainly opening of IGBT module and provides power supply; and there is certain defencive function; receive from control panel the conducting that drived control information carries out IGBT module during specific works; protection is implemented in the shutoff completing IGBT module during fault, and relevant information is fed back to control panel.The test of usual drive plate defencive function needs the rear IGBT module that coordinates of installation to carry out, but once shielding failure, will directly cause the scaling loss of IGBT module, also may cause personal injury to commissioning staff.
Summary of the invention
The technical problem to be solved in the present invention is: overcome above-mentioned deficiency, provides a kind of and drives protection simulating test device, at the simulation test of drive plate installation advance row cutting protection, prevents the scaling loss of IGBT module, ensures safety in production.
The technical solution adopted for the present invention to solve the technical problems is: a kind of driving protects simulating test device, comprises IGBT module, drive plate, control panel, power panel, the first simulation test circuit, the second simulation test circuit and the 3rd simulation test circuit.
The compound full-control type voltage driven type power semiconductor device that IGBT module is made up of BJT double pole triode and metal-oxide-semiconductor field effect transistor.
Described drive plate is conventional PCB, and the turn-on and turn-off that drive plate is mainly IGBT module provide power supply.C1M, C2M and C3M connector that drive plate is arranged is for the connection with IGBT module; C4 connector is used for being connected with control panel that the signal obtaining drived control effectively carries out IGBT module opens shutoff; and protection information is returned, C5 connector is used for being connected control power supply required when obtaining simulation test with power panel.
Described control panel is conventional PCB, the process of various signal is carried out by the dsp chip realizing Digital Signal Processing, dsp chip provides special DSP instruction, realize various digital signal processing algorithm fast, control panel is connected to the C4 connector of drive plate by signal cable, for transmitting the information of drived control to drive plate and receiving the feedback of the normal and failure condition of IGBT module.
Described power panel is conventional PCB, and power panel is connected to the C5 connector of drive plate by stube cable, for drive plate simulation test provides control power supply.
Described first simulation test electric routing battery BT1, switch S 1, resistance R11, R12, luminotron D11, D12, connector C1F form.Battery BT1 is 5V dry cell; Switch S 1 is dpdt double-pole double-throw (DPDT) type, and two passages are connected in parallel, and independently can carry out switch; Resistance R11, R12 are plug-in type chromatic circle resistance; Luminotron D11, D12 are plug-in type light emitting diode; Connector C1F is the jack supporting with C1M connector on drive plate, directly can carry out plug-in mounting, ensures the connection of the first simulation test circuit and drive plate.A passage and resistance R11, D11 of S1 switch are connected in series, and two passages and resistance R12, D12 of S1 switch are connected in series.
Described second simulation test electric routing battery BT2, switch S 2, resistance R21, R22, luminotron D21, D22, connector C2F form.Battery BT2 is 5V dry cell; Switch S 2 is dpdt double-pole double-throw (DPDT) type, and two passages are connected in parallel, and independently can carry out switch; Resistance R21, R22 are plug-in type chromatic circle resistance; Luminotron D21, D22 are plug-in type light emitting diode; Connector C2F is the jack supporting with C2M connector on drive plate, directly can carry out plug-in mounting, ensures the connection of the second simulation test circuit and drive plate.A passage and resistance R21, D21 of S2 switch are connected in series, and two passages and resistance R22, D22 of S2 switch are connected in series.
Described 3rd simulation test electric routing battery BT3, switch S 3, resistance R31, R32, luminotron D31, D32, connector C3F form.Battery BT3 is 5V dry cell; Switch S 3 is dpdt double-pole double-throw (DPDT) type, and two passages are connected in parallel, and independently can carry out switch; Resistance R31, R32 are plug-in type chromatic circle resistance; Luminotron D31, D32 are plug-in type light emitting diode; Connector C3F is the jack supporting with C3M connector on drive plate, directly can carry out plug-in mounting, ensures the connection of the 3rd simulation test circuit and drive plate.A passage and resistance R31, D31 of S3 switch are connected in series, and two passages and resistance R32, D32 of S3 switch are connected in series.
The invention has the beneficial effects as follows: simulation test logic is set in control panel software; test is implemented under the control power supply of low-voltage; before drive plate installs machine, complete the test driving defencive function, effectively prevent the scaling loss that IGBT module causes because of shielding failure, safety and reliability.Completed the break-make of circuit by switching toggle, do not need frequent plug-in connector.By the confirmation of external connection battery advanced row line break-make before the test begins, the loose contact that when preventing cable from accessing connector, pressure skin causes, affects test result.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is a kind of circuit theory diagrams driving protection simulating test device of the present invention.
In Fig. 1: 1. drive plate, 2. control panel, 3. power panel, 4. the first simulation test circuit, 5. the second simulation test circuit, 6. the 3rd simulation test circuit.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment
As shown in Figure 1, one of the present invention drives protection simulating test device, comprises IGBT module, drive plate 1, control panel 2, power panel 3, the first simulation test circuit 4, second simulation test circuit the 5, three simulation test circuit 6.
The compound full-control type voltage driven type power semiconductor device that IGBT module is made up of BJT double pole triode and metal-oxide-semiconductor field effect transistor.
Described drive plate 1 is conventional PCB, and the turn-on and turn-off that drive plate is mainly IGBT module provide power supply.Drive plate is double-sided design, the anti-paint of surface spraying three, drive plate is provided with C1M, C2M, C3M, C4 and C5 connector, C1M, C2M and C3M connector is used for the connection with IGBT module, wherein 1 pin of C1M connector is the collector C of brachium pontis IGBT module in U phase, and 4 pin are the emitter E of brachium pontis IGBT module in U phase; 5 pin of C1M connector are the collector C of brachium pontis IGBT module under U phase, and 8 pin are the emitter E of brachium pontis IGBT module under U phase.1 pin of C2M connector is the collector C of brachium pontis IGBT module in V phase, and 4 pin are the emitter E of brachium pontis IGBT module in V phase; 5 pin of C2M connector are the collector C of brachium pontis IGBT module under V phase, and 8 pin are the emitter E of brachium pontis IGBT module under V phase.1 pin of C3M connector is the collector C of brachium pontis IGBT module in W phase, and 4 pin are the emitter E of brachium pontis IGBT module in W phase; 5 pin of C3M connector are the collector C of brachium pontis IGBT module under W phase, and 8 pin are the emitter E of brachium pontis IGBT module under W phase.C4 connector is connected by shielded cable with control panel 2, and what obtain that the signal of drived control effectively carries out IGBT module opens shutoff, and is returned by protection information.C5 connector is connected with 1 square of cable of power panel 3 by two single cores, and for simulation test circuit provides control power supply, during connection, the left side is positive voltage, and the right is negative voltage.
Described control panel 2 is conventional PCB, carried out the process of various signal by the dsp chip realizing Digital Signal Processing, dsp chip provides special DSP instruction, realizes various digital signal processing algorithm fast, control panel is double-sided design, the anti-paint of surface spraying three.The process of various signal is carried out by dsp chip, the C4 connector of drive plate 1 is connected to by signal cable, for transmitting the information of drived control to drive plate 1 and receiving the feedback of the normal and failure condition of IGBT module, plate is provided with patch-type luminotron for showing various information.
Described power panel 3 is conventional PCB, and power panel is double-sided design, the anti-paint of surface spraying three.The C5 connector of drive plate 1 is connected to, for drive plate 1 simulation test provides control power supply by stube cable.
Described first simulation test circuit 4 is made up of battery BT1, switch S 1, resistance R11, R12, luminotron D11, D12, connector C1F.Battery BT1 is 5V dry cell, provides the power supply starting to test front checking line conduction; Switch S 1 is dpdt double-pole double-throw (DPDT) type, and after two passages are connected in parallel, an end is connected to the positive pole of battery BT1; Independently can carry out switch; Resistance R11, R12 are plug-in type chromatic circle resistance, play metering function, can extend the serviceable life of light emitting diode; Luminotron D11, D12 are plug-in type single color LED; Connector C1F is the jack supporting with C1M connector on drive plate 1, directly can carry out plug-in mounting, ensures the connection of the first simulation test circuit 4 and drive plate 1.One passage of S1 switch and resistance R11, D11 are connected in series the 1st pin being finally connected to C1F connector, and the direct extension line of the 4th pin of C1F connector is connected to the negative terminal of battery BT1; Two passages of S1 switch and resistance R12, D12 are connected in series the 5th pin being finally connected to C1F connector, and the direct extension line of the 8th pin of C1F connector is connected to the negative terminal of battery BT1.During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
Described second simulation test circuit 5 is made up of battery BT2, switch S 2, resistance R21, R22, luminotron D21, D22, connector C2F.Battery BT2 is 5V dry cell, provides the power supply starting to test front checking line conduction; Switch S 2 is dpdt double-pole double-throw (DPDT) type, and after two passages are connected in parallel, an end is connected to the positive pole of battery BT2; Independently can carry out switch; Resistance R21, R22 are plug-in type chromatic circle resistance, play metering function, can extend the serviceable life of light emitting diode; Luminotron D21, D22 are plug-in type single color LED; Connector C2F is the jack supporting with C2M connector on drive plate 1, directly can carry out plug-in mounting, ensures the connection of the second simulation test circuit 5 and drive plate 1.One passage of S2 switch and resistance R21, D21 are connected in series the 1st pin being finally connected to C2F connector, and the direct extension line of the 4th pin of C2F connector is connected to the negative terminal of battery BT2; Two passages of S2 switch and resistance R22, D22 are connected in series the 5th pin being finally connected to C2F connector, and the direct extension line of the 8th pin of C2F connector is connected to the negative terminal of battery BT2.During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
Described 3rd simulation test circuit 6 is made up of battery BT3, switch S 3, resistance R31, R32, luminotron D31, D32, connector C3F.Battery BT3 is 5V dry cell, provides the power supply starting to test front checking line conduction; Switch S 3 is dpdt double-pole double-throw (DPDT) type, and after two passages are connected in parallel, an end is connected to the positive pole of battery BT3; Independently can carry out switch; Resistance R31, R32 are plug-in type chromatic circle resistance, play metering function, can extend the serviceable life of light emitting diode; Luminotron D31, D32 are plug-in type single color LED; Connector C3F is the jack supporting with C3M connector on drive plate 1, directly can carry out plug-in mounting, ensures the connection of the 3rd simulation test circuit 6 and drive plate 1.One passage of S3 switch and resistance R31, D31 are connected in series the 1st pin being finally connected to C3F connector, and the direct extension line of the 4th pin of C3F connector is connected to the negative terminal of battery BT3; Two passages of S3 switch and resistance R32, D32 are connected in series the 5th pin being finally connected to C3F connector, and the direct extension line of the 8th pin of C3F connector is connected to the negative terminal of battery BT3.During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
This device arranges simulation test logic in control panel software, when C1M, C2M and the former correspondence on C3M connector of drive plate 1 is connected to the IGBT module collector C of the different brachium pontis of three-phase and emitter E short circuit respectively separately, i.e. the 1st pin of C1M connector and the 4th pin short circuit, the 5th pin of C1M connector and the 8th pin short circuit; 1st pin of C2M connector and the 4th pin short circuit, the 5th pin of C2M connector and the 8th pin short circuit; 1st pin of C3M connector and the 4th pin short circuit, the 5th pin of C3M connector and the 8th pin short circuit; Coordinate control panel 2 to be adjusted to simulation test state again, the test driving defencive function can be carried out.During actual use, short circuit is completed by C1F, C2F and C3F connector supporting with C1M, C2M and C3M connector.For the first simulation test circuit 4; first cable is used to coordinate soldering to complete connection; then the first simulation test circuit is passed through connector C1F plug-in mounting on the C1M connector of drive plate; do not connect control panel 2 and power panel 3; open the two paths of S1 switch; all light as D11, D12 luminotron and the short circuit success of C1M connector place 1 pin and 4 pin, 5 pin and 8 pin is then described; getting rid of cable pressure skin causes loose contact to affect test result; then close S1 switch, control panel drives the pilot lamp of protection light and illustrate that protection effectively.Second simulation test circuit 5 is identical with the first simulation test circuit with the 3rd simulation test circuit 6 course of work.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.

Claims (7)

1. drive a protection simulating test device, it is characterized in that: comprise IGBT module, drive plate (1), control panel (2), power panel (3), the first simulation test circuit (4), the second simulation test circuit (5) and the 3rd simulation test circuit (6);
The compound full-control type voltage driven type power semiconductor device that described IGBT module is made up of BJT double pole triode and metal-oxide-semiconductor field effect transistor;
Described drive plate (1) is conventional PCB; Drive plate is provided with C1M, C2M, C3M, C4 and C5 connector, C1M, C2M and C3M connector is used for the connection with IGBT module; C4 connector is connected by shielded cable with control panel (2), and what obtain that the signal of drived control effectively carries out IGBT module opens shutoff, and is returned by protection information; C5 connector is connected by stube cable with power panel (3), control power supply required during acquisition simulation test;
Described control panel (2) is conventional PCB; The process of various signal is carried out by the dsp chip realizing Digital Signal Processing, dsp chip provides special DSP instruction, realize various digital signal processing algorithm fast, control panel is connected to the C4 connector of drive plate (1) by signal cable, for transmitting the information of drived control to drive plate (1) and receiving the feedback of the normal and failure condition of IGBT module;
Described power panel (3) is conventional PCB; The C5 connector of drive plate (1) is connected to, for drive plate (1) simulation test provides control power supply by stube cable;
Described first simulation test circuit (4) is made up of battery BT1, switch S 1, resistance R11, R12, luminotron D11, D12 and connector C1F; Battery BT1 is 5V dry cell; Switch S 1 is dpdt double-pole double-throw (DPDT) type; Resistance R11, R12 are plug-in type chromatic circle resistance; Luminotron D11, D12 are plug-in type light emitting diode; Connector C1F is the jack that upper C1M connector is supporting with drive plate (1), directly can carry out plug-in mounting, ensures the connection of the first simulation test circuit (4) and drive plate (1);
Described second simulation test circuit (5) is made up of battery BT2, switch S 2, resistance R21, R22, luminotron D21, D22, connector C2F; Battery BT2 is 5V dry cell; Switch S 2 is dpdt double-pole double-throw (DPDT) type; Resistance R21, R22 are plug-in type chromatic circle resistance; Luminotron D21, D22 are plug-in type light emitting diode; Connector C2F is the jack that upper C2M connector is supporting with drive plate (1), directly can carry out plug-in mounting, ensures the connection of the second simulation test circuit (5) and drive plate (1);
Described 3rd simulation test circuit (6) is made up of battery BT3, switch S 3, resistance R31, R32, luminotron D31, D32, connector C3F; Battery BT3 is 5V dry cell; Switch S 3 is dpdt double-pole double-throw (DPDT) type; Resistance R31, R32 are plug-in type chromatic circle resistance; Luminotron D31, D32 are plug-in type light emitting diode; Connector C3F is the jack that upper C3M connector is supporting with drive plate (1), directly can carry out plug-in mounting, ensures the connection of the 3rd simulation test circuit (6) and drive plate (1).
2. a kind of driving as claimed in claim 1 protects simulating test device, it is characterized in that: described drive plate (1) is double-sided design, the anti-paint of surface spraying three; On plate, 1 pin of C1M connector is the collector C of brachium pontis IGBT module in U phase, and 4 pin are the emitter E of brachium pontis IGBT module in U phase; 5 pin of C1M connector are the collector C of brachium pontis IGBT module under U phase, and 8 pin are the emitter E of brachium pontis IGBT module under U phase; 1 pin of C2M connector is the collector C of brachium pontis IGBT module in V phase, and 4 pin are the emitter E of brachium pontis IGBT module in V phase; 5 pin of C2M connector are the collector C of brachium pontis IGBT module under V phase, and 8 pin are the emitter E of brachium pontis IGBT module under V phase; 1 pin of C3M connector is the collector C of brachium pontis IGBT module in W phase, and 4 pin are the emitter E of brachium pontis IGBT module in W phase; 5 pin of C3M connector are the collector C of brachium pontis IGBT module under W phase, and 8 pin are the emitter E of brachium pontis IGBT module under W phase; The cable that C4 connector is connected with control panel (2) is shielded cable, and what obtain that the signal of drived control effectively carries out IGBT module opens shutoff, and is returned by protection information; The stube cable of C5 connector and power panel (3) is 1 square of cable of two single cores, and control power supply required during acquisition simulation test, during connection, the left side is positive voltage, and the right is negative voltage.
3. a kind of driving as claimed in claim 1 protects simulating test device, it is characterized in that: described control panel (2) is double-sided design, the anti-paint of surface spraying three; Drive the normal of protection and failure condition information by the patch-type luminotron display on plate.
4. a kind of driving as claimed in claim 1 protects simulating test device, it is characterized in that: described power panel (3) is double-sided design, the anti-paint of surface spraying three.
5. a kind of driving protects simulating test device as claimed in claim 1, it is characterized in that: in described first simulation test circuit (4), battery BT1 provides the power supply starting to test front checking line conduction; Two passages of switch S 1 are connected in parallel the positive pole that a rear end is connected to battery BT1; Independently can carry out switch; Resistance R11, R12 play metering function, can extend the serviceable life of light emitting diode; Luminotron D11, D12 are single color LED; One passage of S1 switch and resistance R11, D11 are connected in series the 1st pin being finally connected to C1F connector, and the direct extension line of the 4th pin of C1F connector is connected to the negative terminal of battery BT1; Two passages of S1 switch and resistance R12, D12 are connected in series the 5th pin being finally connected to C1F connector, and the direct extension line of the 8th pin of C1F connector is connected to the negative terminal of battery BT1; During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
6. a kind of driving protects simulating test device as claimed in claim 1, it is characterized in that: in described second simulation test circuit (5), battery BT2 provides the power supply starting to test front checking line conduction; Two passages of switch S 2 are connected in parallel the positive pole that a rear end is connected to battery BT2; Independently can carry out switch; Resistance R21, R22 play metering function, can extend the serviceable life of light emitting diode; Luminotron D21, D22 are single color LED; One passage of S2 switch and resistance R21, D21 are connected in series the 1st pin being finally connected to C2F connector, and the direct extension line of the 4th pin of C2F connector is connected to the negative terminal of battery BT2; Two passages of S2 switch and resistance R22, D22 are connected in series the 5th pin being finally connected to C2F connector, and the direct extension line of the 8th pin of C2F connector is connected to the negative terminal of battery BT2; During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
7. a kind of driving protects simulating test device as claimed in claim 1, it is characterized in that: in described 3rd simulation test circuit (6), battery BT3 provides the power supply starting to test front checking line conduction; Two passages of switch S 3 are connected in parallel the positive pole that a rear end is connected to battery BT3; Independently can carry out switch; Resistance R31, R32 play metering function, can extend the serviceable life of light emitting diode; Luminotron D31, D32 are single color LED; One passage of S3 switch and resistance R31, D31 are connected in series the 1st pin being finally connected to C3F connector, and the direct extension line of the 4th pin of C3F connector is connected to the negative terminal of battery BT3; Two passages of S3 switch and resistance R32, D32 are connected in series the 5th pin being finally connected to C3F connector, and the direct extension line of the 8th pin of C3F connector is connected to the negative terminal of battery BT3; During actual use, each interelement is welded by cable soldering mode and forms electrical connection.
CN201510614081.9A 2015-09-23 2015-09-23 One kind driving protection simulating test device Active CN105223491B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510614081.9A CN105223491B (en) 2015-09-23 2015-09-23 One kind driving protection simulating test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510614081.9A CN105223491B (en) 2015-09-23 2015-09-23 One kind driving protection simulating test device

Publications (2)

Publication Number Publication Date
CN105223491A true CN105223491A (en) 2016-01-06
CN105223491B CN105223491B (en) 2017-11-10

Family

ID=54992555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510614081.9A Active CN105223491B (en) 2015-09-23 2015-09-23 One kind driving protection simulating test device

Country Status (1)

Country Link
CN (1) CN105223491B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194415A (en) * 1992-09-30 1994-07-15 American Teleph & Telegr Co <Att> Method and device for testing logic circuit
CN102969693A (en) * 2012-05-31 2013-03-13 南京浦镇海泰制动设备有限公司 Electronic control valve driving protective circuit of railway vehicles
CN202956458U (en) * 2012-12-06 2013-05-29 常州联力自动化科技有限公司 Protection testing device of driving of three-level inverter
CN204012748U (en) * 2014-08-08 2014-12-10 山东天启信息技术有限公司 SPWM rectification feedback device for a kind of variable-frequency motor
CN104579112A (en) * 2015-01-25 2015-04-29 襄阳绿控电气科技有限公司 Auxiliary power controller used for electric automobile
CN104617753A (en) * 2015-01-20 2015-05-13 江苏广义牵引技术研究所有限公司 Gate driving circuit board and gate driving unit and method
CN104898464A (en) * 2014-03-06 2015-09-09 大族激光科技产业集团股份有限公司 Insulation test control module

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194415A (en) * 1992-09-30 1994-07-15 American Teleph & Telegr Co <Att> Method and device for testing logic circuit
CN102969693A (en) * 2012-05-31 2013-03-13 南京浦镇海泰制动设备有限公司 Electronic control valve driving protective circuit of railway vehicles
CN202956458U (en) * 2012-12-06 2013-05-29 常州联力自动化科技有限公司 Protection testing device of driving of three-level inverter
CN104898464A (en) * 2014-03-06 2015-09-09 大族激光科技产业集团股份有限公司 Insulation test control module
CN204012748U (en) * 2014-08-08 2014-12-10 山东天启信息技术有限公司 SPWM rectification feedback device for a kind of variable-frequency motor
CN104617753A (en) * 2015-01-20 2015-05-13 江苏广义牵引技术研究所有限公司 Gate driving circuit board and gate driving unit and method
CN104579112A (en) * 2015-01-25 2015-04-29 襄阳绿控电气科技有限公司 Auxiliary power controller used for electric automobile

Also Published As

Publication number Publication date
CN105223491B (en) 2017-11-10

Similar Documents

Publication Publication Date Title
CN102231595B (en) Drive circuit of insulated gate bipolar transistor
CN202282730U (en) Upper and lower bridge interlocking circuit in two-level inverter
CN102956204A (en) LED (Light-emitting Diode) backlight drive circuit, backlight module and liquid crystal display device
CN103048837A (en) Liquid crystal display
CN101527115A (en) LED display unit
CN106655814A (en) Manufacturing method of AC motor controller
CN105223491A (en) A kind of driving protects simulating test device
CN202678968U (en) Communication protecting circuit and air conditioner adopting the communication protecting circuit
CN202075356U (en) Detection device for multi-core plug base pin signal line
CN107481678A (en) Backlight drive current monitoring circuit, method and the display device of backlight module
CN103941434A (en) Backlight source module and static electricity damage detecting method thereof
CN208986864U (en) One kind preventing brush motor common conduct circuit
CN202330640U (en) Simple keyboard thin-film circuit board function test jig
CN202260993U (en) Control circuit by utilizing signal interlocking to avoid damage of insulated gate bipolar transistors (IGBTs)
CN208986852U (en) One kind preventing brushless motor common conduct circuit
CN203417200U (en) Detector of electric physiological signals in human bodies
CN205280870U (en) LCM is shaded to weld and prevents short circuit detection tool
CN203788255U (en) Isolated IGBT (insulated gate bipolar transistor) bridge arm direct connection interlocking protector
CN203072235U (en) Arc detection and protection circuit for cold cathode fluorescence lamp (CCFL)
CN201829494U (en) Parallel LED chip packaging structure
CN201171184Y (en) Frequency converter/motor controller
CN202758886U (en) Packaging structure of LED lamp panel
CN205039793U (en) Electronic control board
CN204719123U (en) A kind of overvoltage undervoltage detection circuit
CN203553539U (en) Electrical socket device with dual-display functions

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant