CN205003196U - With supporting data acquisition circuit of cell -phone oscillograph function - Google Patents

With supporting data acquisition circuit of cell -phone oscillograph function Download PDF

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Publication number
CN205003196U
CN205003196U CN201520705413.XU CN201520705413U CN205003196U CN 205003196 U CN205003196 U CN 205003196U CN 201520705413 U CN201520705413 U CN 201520705413U CN 205003196 U CN205003196 U CN 205003196U
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China
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current
switch
positive
negative
data acquisition
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Expired - Fee Related
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CN201520705413.XU
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Chinese (zh)
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马国庆
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Individual
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Individual
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Abstract

The utility model discloses a with supporting data acquisition circuit of cell -phone oscillograph function, characterized by, circuit component include that dual track audio frequency plug, positive and negative test press from both sides and the electrolytic capacitor of welding on the circuit board, current -limiting resistor, zener diode, from the lock -switch, the relation of connection is just to test clamp and electrolytic capacitor, current -limiting resistor, putting through with a certain sound channel contact of dual track audio frequency plug after the positive polar contact of lock -switch is established ties, burden test clamp is put through with another sound channel contact of dual track audio frequency plug with the negative pole contact series connection back from the lock -switch, zener diode's anodal and electrolytic capacitor and current -limiting resistor between the node be connected negative pole and electric connection of burden test clamp. After a dial switch is established ties to audio frequency plug ground wire again with just test the clamping connection and lead to. This circuit not only can make the ground wire of audio frequency plug and microphone import along with the switch change, but also has guaranteed that the negative pole is the zero potential all the time, makes test data accurate, advantages such as convenience.

Description

A kind of data acquisition circuit supporting with mobile phone oscillograph function
Technical field
The utility model particularly relates to a kind of data acquisition circuit supporting with mobile phone oscillograph function.
Background technology
Oscillograph is a kind of comprehensive electrical signal tester device, and the electric signal such as invisible for eyes voltage, electric current can be converted to the waveform directly observed and show on a display screen, common oscillograph volume is large, expensive, not portable.A kind of smart mobile phone with oscillograph function sold in the market, although this mobile phone is provided with oscillograph function, but owing to there is no supporting data acquisition module, make it can not give full play to its oscillograph function, therefore a kind of structure is sought after simple, easy to use, cheap, safe and reliable one energy and the matching used oscilloscope data acquisition module of mobile phone.
Summary of the invention
The purpose of this utility model is to provide a kind of data acquisition circuit supporting with mobile phone oscillograph function.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of data acquisition circuit supporting with mobile phone oscillograph function, it is characterized in that, circuit component comprises dual-channel audio plug, positive and negative test clip and welding electrochemical capacitor, current-limiting resistance, voltage stabilizing diode, self-lock switch on circuit boards; Annexation is, positive test clip is connected with the positive contact of electrochemical capacitor, current-limiting resistance, self-lock switch afterwards and a certain sound channel contact of dual-channel audio plug; Negative testing folder is connected with the negative contacts of self-lock switch afterwards and another sound channel contact of dual-channel audio plug; The positive pole of described voltage stabilizing diode is connected with the node between electrochemical capacitor and current-limiting resistance, and negative pole presss from both sides with negative testing and is electrically connected.
In order to export a waveform testing audio jack ground wire and whether oscillograph normally works, connect with positive test clip again after a toggle switch connected by audio jack ground wire.
During use, audio jack inserted in the audio jack on mobile phone, the oscilloscope software opened on mobile phone can be tested:
1, when power supply surveys voltage waveform, negative pole test clip is connected on power cathode, opens or closes self-lock switch, find out stable waveform, positive pole test clip is parallel on positive source, just can the waveform of test voltage.
2, when surveying current waveform, a resistance in series connection in circuit-under-test, resistance sizes looks actual conditions adjustment, negative pole test clip is linked this resistance in series one end near power cathode, open or close self-lock switch, find out stable waveform, positive pole test clip is linked this resistance in series one end near positive source, just can the waveform of measuring current.
3, when acoustic frequently signal waveform time, negative pole test clip is linked on power cathode, opens or closes self-lock switch, find out stable waveform, positive pole test clip is linked in signal source, just can the waveform of test audio signal.
Principle of work of the present invention and good effect arrange one in circuit every straight-through friendship current limliting branch road, should to be connected to make it can be in parallel with self-lock switch when testing or disconnect two kinds of duties every straight-through friendship current limliting branch road with voltage stabilizing diode.During test, when test voltage is higher than 2V, voltage stabilizing diode conducting, stop electric current to flow backward, self-lock switch is in self-locking state; When test voltage is lower than 2V, voltage stabilizing diode disconnects, and self-lock switch is in the lock state.When on the negative pole that negative pole test clip is connected to tested power supply, close self-lock switch, the negative contacts of self-lock switch electrically connects with the signal contact of dual-channel audio plug, then input error shows serious clutter; Opened self-locking switch, the negative contacts of self-lock switch electrically connects with the ground wire contact of dual-channel audio plug, then input is normal, and waveform is stablized in display; And then positive pole test clip is connected on the positive pole of tested power supply, can test.Therefore, this connection not only can make the ground wire of audio jack and microphone input exchange with switch, but also ensure that negative pole is zero potential all the time, makes test data more accurate, easy to use, the advantages such as structure is simple, cheap.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model;
In figure: 1, dual-channel audio plug; 2, positive test clip; 3, negative testing folder; 4, electrochemical capacitor; 5, current-limiting resistance; 6, voltage stabilizing diode; 7, self-lock switch; 8, toggle switch.
Embodiment
According to Fig. 1, a kind of data acquisition circuit supporting with mobile phone oscillograph function, circuit component comprises dual-channel audio and inserts 1, positive and negative test clip 2 and 3, and welding electrolysis electricity 4, current-limiting resistance 5, voltage stabilizing diode 6, self-lock switch 7 on circuit boards; Annexation is, after positive test clip 2 is connected with the positive contact of electrochemical capacitor 4, current-limiting resistance 5, self-lock switch 7 and dual-channel audio insert a certain sound channel contact of 1; Negative testing folder 3 is connected with the negative contacts of self-lock switch 7 afterwards and another sound channel contact of dual-channel audio plug 1; The positive pole of described voltage stabilizing diode 6 is connected with the node between electrochemical capacitor 4 and current-limiting resistance 5, and negative pole and negative testing are pressed from both sides 3 and be electrically connected.
In order to export a waveform testing audio jack ground wire and whether oscillograph normally works, connect with positive test clip 2 again after a toggle switch 8 connected by dual-channel audio plug 1 ground wire.
Above-mentioned electrochemical capacitor 4 can adopt 47UF electrochemical capacitor; Current-limiting resistance 5 can adopt 1 Ω resistance.

Claims (3)

1. with the data acquisition circuit that mobile phone oscillograph function is supporting, it is characterized in that, circuit component comprises dual-channel audio plug, positive and negative test clip and welding electrochemical capacitor, current-limiting resistance, voltage stabilizing diode, self-lock switch on circuit boards; Annexation is, positive test clip is connected with the positive contact of electrochemical capacitor, current-limiting resistance, self-lock switch afterwards and a certain sound channel contact of dual-channel audio plug; Negative testing folder is connected with the negative contacts of self-lock switch afterwards and another sound channel contact of dual-channel audio plug; The positive pole of described voltage stabilizing diode is connected with the node between electrochemical capacitor and current-limiting resistance, and negative pole presss from both sides with negative testing and is electrically connected.
2. a kind of data acquisition circuit supporting with mobile phone oscillograph function as claimed in claim 1, is characterized in that, to connect a toggle switch at audio jack ground wire.
3. a kind of data acquisition circuit supporting with mobile phone oscillograph function as claimed in claim 2, it is characterized in that, described toggle switch is connected with positive test clip again.
CN201520705413.XU 2015-09-14 2015-09-14 With supporting data acquisition circuit of cell -phone oscillograph function Expired - Fee Related CN205003196U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520705413.XU CN205003196U (en) 2015-09-14 2015-09-14 With supporting data acquisition circuit of cell -phone oscillograph function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520705413.XU CN205003196U (en) 2015-09-14 2015-09-14 With supporting data acquisition circuit of cell -phone oscillograph function

Publications (1)

Publication Number Publication Date
CN205003196U true CN205003196U (en) 2016-01-27

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Family Applications (1)

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CN201520705413.XU Expired - Fee Related CN205003196U (en) 2015-09-14 2015-09-14 With supporting data acquisition circuit of cell -phone oscillograph function

Country Status (1)

Country Link
CN (1) CN205003196U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092921A (en) * 2015-09-14 2015-11-25 马国庆 Data acquisition circuit in matching with handset oscilloscope in functions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092921A (en) * 2015-09-14 2015-11-25 马国庆 Data acquisition circuit in matching with handset oscilloscope in functions

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160127

Termination date: 20180914

CF01 Termination of patent right due to non-payment of annual fee