CN206575198U - Mobile terminal current testing circuit and device - Google Patents
Mobile terminal current testing circuit and device Download PDFInfo
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- CN206575198U CN206575198U CN201720322762.2U CN201720322762U CN206575198U CN 206575198 U CN206575198 U CN 206575198U CN 201720322762 U CN201720322762 U CN 201720322762U CN 206575198 U CN206575198 U CN 206575198U
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- mobile terminal
- usb interface
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Abstract
The utility model discloses a kind of mobile terminal current testing circuit and device, wherein mobile terminal current testing circuit, and mobile terminal current testing circuit includes USB switch modules, control module, charging module and the first USB interface；Wherein, the first USB interface is connected with mobile terminal to be tested；Charging module, being charged to mobile terminal to be tested by the first USB interface in charge mode；USB switch modules, in standby mode, cut-out charging module is inputted to the power supply of the first USB interface；Control module, according to the control signal of computer input, driving USB switch modules are switched over.Technical solutions of the utility model improve the testing precision of standby current.
Description
Technical field
The utility model is related to communication equipment field, more particularly to a kind of mobile terminal current testing circuit and device.
Background technology
The electric current of testing mobile phone in current producing line, including standby current test and the test of charging current.Typically lead to
Cross two-way programmable power supply to power, mobile phone simulated battery is served as all the way, another road provides 5V power supplys and charged the phone, and passes through electricity
Brain control mobile phone, which enters standby current, to be tested or charging current test.
When computer is communicated with mobile phone, command communication has electric current when testing standby current from computer USB port
The USB port of mobile phone is flowed into, this can be impacted to the test of standby current.
Utility model content
Main purpose of the present utility model is to propose a kind of mobile terminal current testing circuit, it is intended to improve testing current
Accuracy.
To achieve the above object, the utility model proposes a kind of mobile terminal current testing circuit, including USB switching moldings
Block, control module, charging module and the first USB interface；Wherein, the first USB interface is connected with mobile terminal to be tested；
The charging module, is charged in charge mode by first USB interface to mobile terminal to be tested；
The USB switch modules, connected in standby mode computer and first USB interface correction data port and
Negative data port so that computer is communicated with mobile terminal to be tested.
The control module, according to the control signal of computer input, in standby mode cut off charging module input to
The power supply of first USB interface.
Preferably, the charging module includes secondary USB interface, and the secondary USB interface is connected with charging adapter；Institute
State USB switch modules and the secondary USB interface and first USB interface are also connected in charge mode so that be to be tested
Mobile terminal is communicated, and charging adapter is identified.
Preferably, the charging module is connected with the USB switch modules and first USB interface respectively, the control
Molding block is connected with the USB switch modules and the charging module respectively.
Preferably, the charging module includes secondary USB interface, first resistor, second resistance, 3rd resistor, the first MOS
Pipe and the second metal-oxide-semiconductor；The power end of the secondary USB interface is connected with the first end of the first resistor, the first resistor
The second end be connected with the drain electrode of first metal-oxide-semiconductor, the source ground of first metal-oxide-semiconductor, the gate pole of first metal-oxide-semiconductor
It is connected through second resistance with the control module；The first end of the 3rd resistor is connected with the gate pole of first metal-oxide-semiconductor, institute
The second end for stating 3rd resistor is connected with the source electrode of first metal-oxide-semiconductor；
The gate pole of second metal-oxide-semiconductor is connected with the second end of the first resistor, the drain electrode of second metal-oxide-semiconductor and institute
The second end connection of first resistor is stated, the source electrode of second metal-oxide-semiconductor is connected with the power end of first USB interface.
Preferably, first metal-oxide-semiconductor is NMOS tube, and second metal-oxide-semiconductor is PMOS.
Preferably, the USB switch modules include the 3rd USB interface, switching chip, the 4th resistance and the 5th resistance；Institute
State the correction data end of the first high speed correction data end and the first high speed negative data end of switching chip respectively with the secondary USB interface
With the connection of negative data end, the second high speed correction data end and the second high speed negative data end of the switching chip are respectively with the described 3rd
The correction data end of USB interface and the connection of negative data end, the correction data end of the switching chip is through the 4th resistance and described the
The correction data end connection of one USB interface, the negative data end of the switching chip is through the 5th resistance and first USB interface
Negative data end connection.
Preferably, the control module includes first serial, control chip and electrical level transferring chip；The first serial
Receiving terminal is connected with the drive output of the electrical level transferring chip, the transmitting terminal of the first serial and the level conversion core
The receiver input connection of piece；The receiver output end of the electrical level transferring chip connects with the receiving terminal of the control chip
Connect, the driving input of the electrical level transferring chip is connected with the transmitting terminal of the control chip；The first of the control chip
Control end is connected with the USB switch modules, and the second control end of the control chip is connected with the charging module.
Preferably, the control module also includes the first light emitting diode, the second light emitting diode, the 6th resistance and the 7th
Resistance；The negative electrode of first light emitting diode is connected with the 3rd control end of the control chip, first light-emitting diodes
The anode of pipe is connected through the 6th resistance with power supply；The negative electrode of second light emitting diode and the 4th of the control chip the
Control end is connected, and the anode of second light emitting diode is connected through the 7th resistance with power supply.
The utility model also proposes a kind of mobile terminal current testing device, and the mobile terminal current testing device includes
Mobile terminal current testing circuit as described above, programmable power supply and computer, the computer respectively with the program-controlled electric
Source, the electrical connection of mobile terminal current testing circuit.
Preferably, connected between the computer and programmable power supply through gpib interface, the computer and mobile terminal electricity
Connected between current test circuit through USB data line and RS-232 lines.
Technical solutions of the utility model by setting USB switch modules, control module, charging module and the first USB interface,
Form a kind of mobile terminal current testing circuit.In technical solutions of the utility model, when carrying out charging current test, pass through
Charging module is charged to mobile terminal, and charging is entered to mobile terminal without using the VBUS ends of USB interface of computer again,
Thus when carrying out standby current test, the connection of cut-out charging module and the first USB interface, you can avoid external power source to shifting
The influence of the standby current test of dynamic terminal.Technical solutions of the utility model improve the testing precision of standby current.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the functional block diagram of the embodiment of the utility model mobile terminal current testing circuit one；
Fig. 2 is the structural representation of charging module and USB switch modules in Fig. 1；
Fig. 3 is the structural representation of the embodiment of control module one in Fig. 1.
Drawing reference numeral explanation：
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality indicate (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality indicates to be only used for explaining relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality indicates also correspondingly therewith to change.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that this technical side
The combination of case is not present, also not within the protection domain of the utility model requirement.
The utility model proposes a kind of mobile terminal current testing circuit.
In the utility model embodiment, as shown in figure 1, the mobile terminal current testing circuit includes USB switch modules
100th, control module 200, the USB interface 400 of charging module 300 and first；Wherein, the first USB interface 400 and movement to be tested are whole
End connection；
The charging module 300, mobile terminal to be tested is given in charge mode by first USB interface 400
Charging；
The USB switch modules 100, the correction data of computer and first USB interface 400 is connected in standby mode
Port and negative data port so that computer is communicated with mobile terminal to be tested.
The control module 200, according to the control signal of computer input, charging module 300 is cut off in standby mode
Input to the power supply of first USB interface 400.
In the present embodiment, the computer uses notebook computer, and test software is provided with the notebook computer.This reality
Apply in example to illustrate mobile phone test.
What deserves to be explained is, the first USB interface 400 is USB type-A mother sockets in the present embodiment, is connect with the USB of mobile phone
Mouth is carried out to inserting.Wherein, the first USB interface 400 includes power end VBUS ports, correction data port, negative data port and ground connection
Port.When being charged, charging module 300 is charged by VBUS ports to mobile phone, and charging module 300 is also with first
The correction data port of USB interface 400, the connection of negative data port, the identification for mobile phone to charging module 300.
Technical solutions of the utility model are by setting USB switch modules 100, control module 200, charging module 300 and
One USB interface 400, forms a kind of mobile terminal current testing circuit.In technical solutions of the utility model, charging electricity is being carried out
During current test, mobile terminal is charged by charging module 300, the VBUS ends of the USB interface without using computer again
Enter charging to mobile terminal, thus carrying out standby current test, cut off the company of the USB interface 400 of charging module 300 and first
Connect, you can avoid influence of the external power source to the standby current test of mobile terminal.Technical solutions of the utility model, which are improved, to be treated
The testing precision of electromechanics stream.
Reference picture 2, further, the charging module include secondary USB interface J2, and the secondary USB interface J2 is with filling
Electric adapter is connected；The USB switch modules 100 also connect the secondary USB interface J2 and described first in charge mode
USB interface J1 so that mobile terminal to be tested is communicated, and charging adapter is identified.
It should be noted that sending switching command by computer, standby current test is carried out, now control module 200 is defeated
Go out drive signal, cut off the connection of the USB interface 400 of charging module 300 and first.In the present embodiment, the USB switch modules
100 also connect the correction data port and negative data port of computer and the first USB interface 400, are communicated with facilitating.
In the present embodiment, the charging module 300 respectively with the USB switch modules 100 and first USB interface
400 connections, the control module 200 is connected with the USB switch modules 100 and the charging module 300 respectively.
Reference picture 2, specifically, the charging module 300 include secondary USB interface J2, first resistor R1, second resistance
R2,3rd resistor R3, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2；The power end of the secondary USB interface J2 and the described first electricity
R1 first end connection is hindered, the second end of the first resistor R1 is connected with the drain electrode of the first metal-oxide-semiconductor Q1, described first
Metal-oxide-semiconductor Q1 source ground, the gate pole of the first metal-oxide-semiconductor Q1 is connected through second resistance R2 with the control module 200；It is described
3rd resistor R3 first end is connected with the gate pole of the first metal-oxide-semiconductor Q1, the second end of the 3rd resistor R3 and described the
One metal-oxide-semiconductor Q1 source electrode connection；
The gate pole of the second metal-oxide-semiconductor Q2 is connected with the second end of the first resistor R1, the leakage of the second metal-oxide-semiconductor Q2
Pole is connected with the second end of the first resistor R1, and the power end of the source electrode of second metal-oxide-semiconductor and first USB interface connects
Connect.
It should be noted that in the present embodiment, secondary USB interface J2 is connected with power adapter for mobile phones, is directly accessed city
In electricity, when carrying out the test of mobile phone charging current, power supply all the way is provided for mobile phone.
In the present embodiment, the first metal-oxide-semiconductor Q1 is NMOS tube, and the second metal-oxide-semiconductor Q2 is PMOS.Entering charging
During testing current, the gate pole input high level signal of NMPS pipes, NMOS tube conducting has dragged down first resistor R1 second voltage,
Therefore the gate pole of PMOS is low level, and PMOS is turned on, and secondary USB interface J2 is by first resistor R1, PMOS to mobile phone
Charging.
Carry out standby current test when, it is easy to understanding, the gate pole input low level of NMOS tube, now NMOS tube close
Disconnected, PMOS is also switched off therewith, is inputted to the power supply of the first USB interface and is cut off.In this present embodiment, PMOS uses model
Realized for PPM6N30V9 integrated chip.
Specifically, the USB switch modules 100 include the 3rd USB interface J3, switching chip U1, the 4th resistance R4 and the
Five resistance R5；The the first high speed correction data end HSD1+ and the first high speed negative data end HSD1- of the switching chip U1 respectively with institute
State secondary USB interface J2 correction data end D+ and the D- connections of negative data end, the second high speed correction data end of the switching chip U1
HSD2+ and the second high speed negative data end HSD2- connect with the correction data end D+ and negative data end D- of the 3rd USB interface J3 respectively
Connect, correction data end D+s of the correction data end D+ through the 4th resistance R4 and first USB interface of the switching chip U1 connects
Connect, the negative data end D- for switching chip U1 is through the 5th resistance R5 and the first USB interface J1 (i.e. in Fig. 1
400) negative data end D- connections.
In the present embodiment, the 3rd USB interface J3 is connected with computer, wherein the 3rd USB interface J3 VBUS ends disconnect, with
Exclude influence of the computer to test standby current.The switching chip U1 is real using model SGM7228YWQ10 chip
It is existing.
It should be noted that when carrying out charging current test, secondary USB interface J2 correction data end D+ and negative data end
D- is connected through the switching chip U1 with the correction data end D+ and negative data end D- of the first USB interface, is carrying out standby current survey
Examination, switching chip U1 receives the switching signal SWITCH from control module 200, cut-out secondary USB interface J2 correction data end D
+ the connection with negative data end D- and the first USB interface J1, connects the 3rd USB interface J3 correction data end D+ and negative data end D-
With the first USB interface J1 connection, the communication of computer and mobile phone is realized.
Reference picture 3, specifically, the control module 200 include first serial J4, control chip U2 and electrical level transferring chip
U3；The receiving terminal RXD of the first serial J4 is connected with the drive output T1OUT of the electrical level transferring chip U3, and described
One serial ports J4 transmitting terminal TXD is connected with the receiver input R1IN of the electrical level transferring chip U3；The level conversion core
Piece U3 receiver output end R1OUT is connected with the receiving terminal RXD of the control chip U2, the drive of the electrical level transferring chip U3
Dynamic input T1IN is connected with the transmitting terminal TXD of the control chip U2；The first control end P1.3 of the control chip U2 with
The USB switch modules 100 are connected, and the second control end P1.4 of the control chip U2 is connected with the charging module 300.
In the present embodiment, the control chip U2 uses chip microcontroller, the specific core using model STC15W401AS
Piece is realized.The electrical level transferring chip U3 is realized using model STC232 chip.
It should be noted that the first serial is connected with computer, first serial is 9pin serial ports, due to computer with
The serial ports output level of first serial J4 connections is RS232 level, the reachable ± 12V (volt) of its generating positive and negative voltage；And single-chip microcomputer is defeated
Go out for Transistor-Transistor Logic level, output high level is 5V, and low level is 0V.Accordingly, it would be desirable to which the electrical level transferring chip U3 that samples is to level
Signal is changed.
Further, the control module 200 also includes the first light emitting diode D1, the second light emitting diode D2, the 6th
Resistance R6 and the 7th resistance R7；The negative electrode of the first light emitting diode D1 and the 3rd control end P1.0 of the control chip U2
Connection, the anode of the first light emitting diode D1 is connected through the 6th resistance R6 with power supply；Second light emitting diode
D2 negative electrode is connected with the 4th control end P1.1 of the control chip U2, and the anode of the second light emitting diode D2 is through described
7th resistance R7 is connected with power supply.
In this city embodiment, the first light emitting diode D1 is red light emitting diodes, and the second light emitting diode D2 is green
Light emitting diode.When carrying out punching electricity testing current, level is dragged down at the 3rd control end, and the first light emitting diode D1 sends red
Light；When carrying out standby current test, level is dragged down at the 4th control end, and the second light emitting diode D2 sends green light.First
Light emitting diode D1 and the second light emitting diode D2 is used to indicate test mode.
Further, the charging module 300 also includes the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electricity
Hold C4, the 5th electric capacity C5 and the 6th electric capacity C6.The first end of the first electric capacity C1 connects with the first end of the first resistor R1
Connect, the second end of the first electric capacity C1 ground connection, the second electric capacity C2 and the 3rd electric capacity C3 with the first electric capacity C1 simultaneously
Connection；The first end of the 4th electric capacity C4 is connected with the source electrode of the PMOS, the second end ground connection of the 4th electric capacity C4, institute
State the 5th electric capacity C5 and the 6th electric capacity C6 is in parallel with the 4th electric capacity C4.
The USB switch modules 100 also include the 7th electric capacity C7 and the 8th resistance R8, and the output of the switching chip U1 makes
Energy end OE is grounded through the 8th resistance R8, the 7th electric capacity C7 connections and switching chip U1 earth terminal GND and power end V
+ between, the control signal input S and the control chip U2 of the switching chip U1 the first control P1.3 ends are connected.
Further, the control module 200 also includes the 8th electric capacity C8, the 9th electric capacity C9, the tenth electric capacity C10 and the 9th
Resistance R9；The clock end CLK of the control chip U2 is connected with the first end of the 8th electric capacity C8, the 8th electric capacity C8's
Second end is connected with power supply, and the first end of the clock end CLK of the control chip U2 also with the 8th resistance R8 is connected, and the described 8th
Resistance R8 the second end ground connection.The power end of the control chip U2 is connected to power supply, the first end of the 9th electric capacity C9 with
The power end connection of the control chip U2, the second end ground connection of the 9th electric capacity C9, the tenth electric capacity C10 and described the
Nine electric capacity C9 are in parallel.
Based on above-mentioned mobile terminal current testing circuit, the utility model also proposes a kind of mobile terminal testing current dress
Put, the mobile terminal current testing device includes mobile terminal current testing circuit as described above, programmable power supply and calculated
Machine, the computer is electrically connected with the programmable power supply, mobile terminal current testing circuit respectively.
Further, connected between the computer and programmable power supply through gpib interface, the computer and mobile terminal
Connected between current testing circuit through USB data line and RS-232 lines.
It should be noted that the first USB interface is connected with mobile phone, secondary USB interface J2 is connected with handpiece adapter, the 3rd
USB interface J3 and first serial J4 are connected with computer.In the present embodiment, computer is connected by gpib interface with programmable power supply,
Realize that the setting to programmable power supply output voltage, electric current is controlled.The internal battery powers interface connection of programmable power supply and mobile phone, be
Mobile phone provides virtual battery.Computer is connected by USB data line and RS-232 lines with mobile terminal current testing circuit, then is passed through
USB interface and mobile phone grafting.
Explanation now is entered to cell phone standby/charging measurement flow：
The level at control chip U2 the second control end P1.4 ends is detected first；
If the second control end P1.4 is high level, NMOS tube and PMOS conducting；
Electric current eventually enters into mobile phone through NMOS tube and PMOS；
Into charging current test mode.
If the second control end P1.4 is low level, NMOS tube and PMOS ON-OFF；
The connection of the first USB interface and secondary USB interface J2 correction data end D+ and negative data end D- will be cut off, and connected
3rd USB interface J3 correction data end D+ and negative data end D- and the first USB interface connection；
Into standby current test mode.
Technical solutions of the utility model provide the VBUS terminal voltages in USB using charger, pass through MCU Instruction control
The break-make of metal-oxide-semiconductor controls the break-make of whole charging circuit, while the communication of computer and mobile phone is come complete by D+/D- in USB
Into the VBUS ends at the USB ends of computer disconnect, therefore can exclude the influence of computer end.In addition, power supply uses common charger
One group of programmable power supply is substituted, the power supply expense of half is saved.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every utility model of the present utility model design under, the equivalent structure made using the utility model specification and accompanying drawing content
Conversion, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of mobile terminal current testing circuit, it is characterised in that the mobile terminal current testing circuit is switched including USB
Module, control module, charging module and the first USB interface；Wherein, the first USB interface is connected with mobile terminal to be tested；
The charging module, is charged in charge mode by first USB interface to mobile terminal to be tested；
The USB switch modules, correction data port and negative of the computer with first USB interface are connected in standby mode
According to port so that computer is communicated with mobile terminal to be tested；
The control module, according to the control signal of computer input, in standby mode, cut-out charging module is inputted to described
The power supply of first USB interface.
2. mobile terminal current testing circuit as claimed in claim 1, it is characterised in that the charging module includes second
USB interface, the secondary USB interface is connected with charging adapter；The USB switch modules are connected described also in charge mode
Secondary USB interface and first USB interface so that mobile terminal to be tested is communicated to be known to charging adapter
Not.
3. mobile terminal current testing circuit as claimed in claim 1 or 2, it is characterised in that the charging module respectively with
The USB switch modules and first USB interface connection, the control module respectively with USB switch modules and described
Charging module is connected.
4. mobile terminal current testing circuit as claimed in claim 1, it is characterised in that the charging module includes second
USB interface, first resistor, second resistance, 3rd resistor, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor；The power supply of the secondary USB interface
End is connected with the first end of the first resistor, and the second end of the first resistor is connected with the drain electrode of first metal-oxide-semiconductor, institute
The source ground of the first metal-oxide-semiconductor is stated, the gate pole of first metal-oxide-semiconductor is connected through second resistance with the control module；Described
The first end of three resistance is connected with the gate pole of first metal-oxide-semiconductor, the second end of the 3rd resistor and first metal-oxide-semiconductor
Source electrode is connected；
The gate pole of second metal-oxide-semiconductor is connected with the second end of the first resistor, the drain electrode of second metal-oxide-semiconductor and described the
The second end connection of one resistance, the source electrode of second metal-oxide-semiconductor is connected with the power end of first USB interface.
5. mobile terminal current testing circuit as claimed in claim 4, it is characterised in that first metal-oxide-semiconductor is NMOS tube,
Second metal-oxide-semiconductor is PMOS.
6. mobile terminal current testing circuit as claimed in claim 4, it is characterised in that the USB switch modules include the
Three USB interfaces, switching chip, the 4th resistance and the 5th resistance；First high speed correction data end of the switching chip and first high
Fast negative data end is connected with the correction data end and negative data end of the secondary USB interface respectively, and the second of the switching chip is high
Fast correction data end and the second high speed negative data end are connected with the correction data end and negative data end of the 3rd USB interface respectively, institute
The correction data end for stating switching chip is connected through the 4th resistance with the correction data end of first USB interface, the switching core
The negative data end of piece is connected through the 5th resistance with the negative data end of first USB interface.
7. mobile terminal current testing circuit as claimed in claim 1, it is characterised in that the control module includes the first string
Mouth, control chip and electrical level transferring chip；The receiving terminal of the first serial and the drive output of the electrical level transferring chip
Connection, the transmitting terminal of the first serial is connected with the receiver input of the electrical level transferring chip；The level conversion core
The receiver output end of piece is connected with the receiving terminal of the control chip, the driving input of the electrical level transferring chip with it is described
The transmitting terminal connection of control chip；First control end of the control chip is connected with the USB switch modules, the control core
Second control end of piece is connected with the charging module.
8. mobile terminal current testing circuit as claimed in claim 7, it is characterised in that the control module also includes first
Light emitting diode, the second light emitting diode, the 6th resistance and the 7th resistance；The negative electrode of first light emitting diode and the control
The 3rd control end connection of coremaking piece, the anode of first light emitting diode is connected through the 6th resistance with power supply；It is described
The negative electrode of second light emitting diode is connected with the 4th control end of the control chip, the anode warp of second light emitting diode
7th resistance is connected with power supply.
9. a kind of mobile terminal current testing device, it is characterised in that the mobile terminal current testing device includes program-controlled electric
Source, computer and the mobile terminal current testing circuit as described in claim 1-8 any one, the computer respectively with
The programmable power supply, the electrical connection of mobile terminal current testing circuit.
10. mobile terminal current testing device as claimed in claim 9, it is characterised in that the computer and programmable power supply
Between connected through gpib interface, through USB data line and RS-232 lines between computer and the mobile terminal current testing circuit
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322762.2U CN206575198U (en) | 2017-03-29 | 2017-03-29 | Mobile terminal current testing circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322762.2U CN206575198U (en) | 2017-03-29 | 2017-03-29 | Mobile terminal current testing circuit and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575198U true CN206575198U (en) | 2017-10-20 |
Family
ID=60053427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720322762.2U Active CN206575198U (en) | 2017-03-29 | 2017-03-29 | Mobile terminal current testing circuit and device |
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| Country | Link |
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| CN (1) | CN206575198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431233A (en) * | 2020-04-01 | 2020-07-17 | 维沃移动通信有限公司 | Charging circuit and charging device |
| TWI713280B (en) * | 2020-05-20 | 2020-12-11 | 奇源科技有限公司 | Charging power supply circuit for portable electronic device and portable electronic device |
-
2017
- 2017-03-29 CN CN201720322762.2U patent/CN206575198U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431233A (en) * | 2020-04-01 | 2020-07-17 | 维沃移动通信有限公司 | Charging circuit and charging device |
| TWI713280B (en) * | 2020-05-20 | 2020-12-11 | 奇源科技有限公司 | Charging power supply circuit for portable electronic device and portable electronic device |
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Effective date of registration: 20180524 Address after: 644000 Lingang Economic and Technological Development Zone, Yibin, Sichuan, No. 713, section 17, 17 section of Changjiang North Road, Lingnan economic and Technological Development Zone. Patentee after: Sichuan sac Communication Technology Co., Ltd. Address before: 518000 H3 501B, east industrial area of overseas Chinese town, Nanshan District, Shenzhen, Guangdong Patentee before: Shenzhen Tinno Wireless Technology Co., Ltd. |