CN207798930U - Wireless DC electricity tester - Google Patents
Wireless DC electricity tester Download PDFInfo
- Publication number
- CN207798930U CN207798930U CN201820180277.0U CN201820180277U CN207798930U CN 207798930 U CN207798930 U CN 207798930U CN 201820180277 U CN201820180277 U CN 201820180277U CN 207798930 U CN207798930 U CN 207798930U
- Authority
- CN
- China
- Prior art keywords
- unit
- handwriting
- electrode contact
- test
- converter
- 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.)
- Active
Links
Abstract
The utility model discloses wireless DC electricity testers, including handwriting, test nib, circuit board, electrode contact and battery, test nib is located at the front end of handwriting and protrudes from handwriting, electrode contact is set to the side of handwriting outer wall, test nib and electrode contact are connect with circuit board respectively, circuit board includes AD conversion unit, reference voltage unit, voltage regulation unit and display unit, AD conversion unit includes the first AD converter and the second AD converter, the input terminal of first AD converter connects reference voltage unit, the input terminal connecting test handwriting of second AD converter, the input terminal connecting test nib of voltage regulation unit, the output end of voltage regulation unit connects reference voltage unit, the output end of AD conversion unit connects display unit, battery is with display unit for being electrically connected.The utility model has the following advantages and effect：3 volts of voltage values to 30 volts of direct currents are can detect, which are shown by digital liquid crystal display, and with small.Portable advantage.
Description
Technical field
The utility model is related to the field of maintenance circuit tool, more particularly to wireless DC electricity tester.
Background technology
Whether test pencil is also known as voltage test pencil, be a kind of electrician tool, charged for testing in electric wire.Existing test pencil work(
Can be single, in general, only having simple survey Electricity Functional, and indicating circuit is come by using neon lamp or whether electric component charges,
Specific voltage value can not be tested out.But test pencil have the advantages that it is portable, small.
In addition, in DC circuit designs and debugs, circuit voltage is after over commutation, filtering and voltage stabilizing, common chip
And the supply voltage of microcontroller is often below 12V, it is desirable to the voltage value of detection circuit or electric component, need using multimeter or
Voltmeter is detected, but the volume of multimeter and voltmeter is larger, it has not been convenient to be taken up space when carrying, and placing.
Utility model content
The purpose of this utility model is to provide wireless DC electricity tester, can detect 3 volts of voltage values to 30 volts of direct currents, leads to
It crosses digital liquid crystal display and shows the voltage value, and have the advantages that small, portable.
The above-mentioned technical purpose of the utility model technical scheme is that：Wireless DC electricity tester,
Including handwriting, test nib, circuit board, electrode contact and battery, the test nib is located at the front end of handwriting and protrudes from
Handwriting, the electrode contact are set to the side of handwriting outer wall, and the test nib and electrode contact are connect with circuit board respectively,
The circuit board includes AD conversion unit, reference voltage unit, voltage regulation unit and display unit, and the AD conversion unit includes
First AD converter and the second AD converter, the input terminal of first AD converter connect reference voltage unit, and described the
The input terminal connecting test handwriting of two AD converters, the input terminal connecting test nib of the voltage regulation unit, the voltage regulation unit
Output end connect reference voltage unit, the output end of the AD conversion unit connects display unit, and the battery is single with display
Member is for electrical connection.
By using above-mentioned technical proposal, test nib is separately connected the two of circuit-under-test or electric component with electrode contact
End, is allowed to be formed into a loop and carries out taking electricity, without additional power supply.In addition, the reference voltage detection of the present embodiment is 3V to 30V,
It can be directly used for detecting the voltage of circuit and electric component within the scope of this, strong applicability.In addition, being provided with display unit for real
When show the voltage value that detects, the effect of alternative voltmeter, while having the advantages that small, portable.
It is further arranged to：Test nib is in series with the diode with unilateal conduction characteristic with electrode contact, two pole
The positive connecting test nib of pipe, cathode connection electrode contact.
By using above-mentioned technical proposal, diode plays a protective role, and prevents circuit reversal connection from causing the damage of electric component
It is bad.
It is further arranged to：The circuit board is provided with active buzzer, the anode connection voltage stabilizing list of the active buzzer
First electricity, cathode connection electrode contact.
By using above-mentioned technical proposal, active buzzer plays the role of vocalized alerts, when the voltage value detected is located at
To between 30V, buzzer is powered and pipes 3V, and expression has detected that voltage.
It is further arranged to：The circuit board, which is provided with, is used to indicate polar LED light, and the LED light is just
Pole is electrically connected with voltage regulation unit, cathode connection electrode contact.
By using above-mentioned technical proposal, the LED light be red, green double-colored LED light, when LED light just
To when conducting, glow；Otherwise suggesting effect is played in green light, the indication circuit reversal connection if green light.
It is further arranged to：The battery powered is connected with backlight, and the display unit includes digital code LCD,
And the digital code LCD is located above backlight.
By using above-mentioned technical proposal, backlight and digital code LCD are individually powered by battery, certain photosensitive
In the debugging process of circuit or photosensitive electric component, when needing full dark situation, backlight can be lighted and play the role of temporary lighting.
It is further arranged to：The test pen skull is equipped with pen cover, and the pen cover is connect by connecting line with handwriting, the company
Wiring is flexible material.
By using above-mentioned technical proposal, pen cover plays the effect of protection test nib, is carried out test nib is not used
When test, pen cover is covered on test nib, prevents from testing written damage.
In conclusion the utility model has the advantages that：The reference voltage detection of the present embodiment is 3V to 30V,
It can be directly used for the voltage of detection DC circuit and electric component, strong applicability.In addition, being provided with display unit for showing in real time
Show the voltage value detected, the effect of alternative voltmeter, while having the advantages that small, portable.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is example structure block diagram.
In figure：11, handwriting；12, test nib；13, electrode contact；14, pen cover；15, connecting line；2, circuit board；31, base
Quasi- voltage cell；32, AD conversion unit；33, voltage regulation unit；34, display unit；35, backlight；4, battery；5, diode；6、
Active buzzer；7, LED light.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
With reference to figure 1 and Fig. 2, wireless DC electricity tester, including handwriting 11, test nib 12, circuit board 2, electrode contact 13
And battery 4, the test nib 12, circuit board 2, electrode contact 13 and battery 4 are fixedly installed in handwriting 11, test
Nib 12 is located at the front end of handwriting 11 and protrudes from handwriting 11, and electrode contact 13 is set to the side of handwriting 11, test nib 12
It is connect respectively with circuit board 2 with electrode contact 13.Test nib 12 is covered with pen cover 14, and pen cover 14 passes through connecting line 15 and handwriting
11 connections, the connecting line 15 are flexible material, and pen cover 14 plays the role of protection test nib 12.
In addition, test nib 12 is in series with the diode 5 with unilateal conduction characteristic with electrode contact 13, the diode 5
Positive connecting test nib 12, cathode connection electrode contact 13.The model of diode 5 uses 1N4007, plays a protective role,
Prevent circuit reversal connection from causing the damage of electric component.
In addition, circuit board 2 includes AD conversion unit 32, reference voltage unit 31, voltage regulation unit 33 and display unit 34,
AD conversion unit 32 includes the first AD converter and the second AD converter, and the input terminal of the first AD converter connects reference voltage
Unit 31, the cathode of the input terminal connection diode 5 of the second AD converter, the input terminal connection diode 5 of voltage regulation unit 33
The output end of cathode, voltage regulation unit 33 connects reference voltage unit 31, and the output end of AD conversion unit 32 connects display unit 34.
Specifically, test nib 12 forms input terminal with electrode contact 13, is separately connected circuit-under-test or electric component
Both ends are allowed to be formed into a loop and carry out taking electricity, without additional power supply.Wherein, test nib 12 connects circuit-under-test or electrical part
The anode of part, and the anode of end connection diode 5, and by the cathode of diode 5 to voltage regulation unit 33 and AD conversion unit
32 power supplies.Voltage regulation unit 33 has voltage stabilizing function, and the range of output voltage is stablized within the scope of 2.7V-3.1V, and branches to base
Quasi- voltage cell 31 provides reference voltage for it, and the reference voltage of the reference voltage unit 31 is 2.5V.First AD converter with
Second AD converter is 10 bit A/D converters, and model is SAD57, and the input terminal of the first AD converter connects reference voltage list
Member 31 is simultaneously used for detection reference voltage, and the cathode of the input terminal connection diode 5 of the second AD converter is for detecting circuit-under-test
Or the voltage of electric component, the supply voltage of current AD converter is conversed by the AD values of reference voltage, then pass through current AD
The supply voltage and circuit-under-test of converter or the voltage of electric component calculate current input terminal voltage, and output is single to showing
Member 34 simultaneously shows the voltage value.
In addition, battery 4 is powered with display unit 34, and battery 4, for being electrically connected with backlight 35, display unit 34 includes
Digital code LCD, the digital code LCD are located at the top of backlight 35.Digital code LCD is 37 of standard
Segment numeral liquid crystal display, and contain 1 decimal point and a voltage unit symbol " V ", 35 luminescent color of backlight is white.
In addition, circuit board 2 is provided with active buzzer 6 and LED light 7, wherein the anode connection of active buzzer 6
33 electricity of voltage regulation unit, cathode connection electrode contact 13, active buzzer 6 plays the role of vocalized alerts, when the voltage value detected
Positioned at 3V between 30V, buzzer is powered and pipes, and expression has detected that voltage；Anode and the voltage regulation unit 33 of LED light 7
Electrical connection, cathode connection electrode contact 13, the LED light 7 be red, green double-colored LED light 7, when LED light 7 just
To when conducting, glow；Otherwise suggesting effect is played in green light, the indication circuit reversal connection if green light.
In addition, the reference voltage detection of the utility model is 3V to 30V, it can be directly used for detecting DC circuit within the scope of this
And the voltage of electric component, strong applicability.But it is not used to the circuit of detection exchange and low pressure, high pressure, it may be damaged
The utility model.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but
As long as all being protected by Patent Law in the right of the utility model.
Claims (6)
1. wireless DC electricity tester, including handwriting (11), test written (12), circuit board (2), electrode contact (13) and battery
(4), the test written (12) is located at the front end of handwriting (11) and protrudes from handwriting (11), and the electrode contact (13) is set to
The side of handwriting (11) outer wall, the test written (12) and electrode contact (13) are connect with circuit board (2) respectively, and feature exists
In：The circuit board (2) includes AD conversion unit (32), reference voltage unit (31), voltage regulation unit (33) and display unit
(34), the AD conversion unit (32) include the first AD converter and the second AD converter, first AD converter it is defeated
Enter end connection reference voltage unit (31), the input terminal connecting test handwriting (11) of second AD converter, the voltage stabilizing list
The input terminal connecting test of first (33) is written (12), the output end connection reference voltage unit (31) of the voltage regulation unit (33),
The output end connection display unit (34) of the AD conversion unit (32), the battery (4) is with display unit (34) for being electrically connected.
2. wireless DC electricity tester according to claim 1, it is characterised in that：Test written (12) and electrode contact (13)
It is in series with the diode (5) with unilateal conduction characteristic, the positive connecting test written (12) of the diode (5), cathode connection
Electrode contact (13).
3. wireless DC electricity tester according to claim 1, it is characterised in that：The circuit board (2) is provided with active bee
Ring device (6), anode connection voltage regulation unit (33) electricity, the cathode connection electrode contact (13) of the active buzzer (6).
4. wireless DC electricity tester according to claim 1, it is characterised in that：The circuit board (2) is provided with for referring to
Show polar LED light (7), the anode of the LED light (7) is electrically connected with voltage regulation unit (33), cathode connection electrode is touched
Head (13).
5. wireless DC electricity tester according to claim 1, it is characterised in that：The battery (4) is for being electrically connected with backlight
Lamp (35), the display unit (34) includes digital code LCD, and the digital code LCD is located on backlight (35)
Side.
6. wireless DC electricity tester according to claim 1, it is characterised in that：The test written (12) is covered with pen cover
(14), the pen cover (14) is connect by connecting line (15) with handwriting (11), which is flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820180277.0U CN207798930U (en) | 2018-02-02 | 2018-02-02 | Wireless DC electricity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820180277.0U CN207798930U (en) | 2018-02-02 | 2018-02-02 | Wireless DC electricity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798930U true CN207798930U (en) | 2018-08-31 |
Family
ID=63268629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820180277.0U Active CN207798930U (en) | 2018-02-02 | 2018-02-02 | Wireless DC electricity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505367A (en) * | 2019-01-30 | 2020-08-07 | 李殿东 | Test pencil and method for prompting different voltages by different sound and light |
-
2018
- 2018-02-02 CN CN201820180277.0U patent/CN207798930U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505367A (en) * | 2019-01-30 | 2020-08-07 | 李殿东 | Test pencil and method for prompting different voltages by different sound and light |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101945534A (en) | Method and circuit for protecting circuit board in case of water inflow of mobile terminal and mobile terminal | |
| CN206990773U (en) | A kind of detection means for testing power module working condition | |
| CN207798930U (en) | Wireless DC electricity tester | |
| CN201898656U (en) | Protective circuit of waterlogged mobile terminal circuit board and mobile terminal | |
| CN209946352U (en) | HiL wire harness testing device | |
| CN206710567U (en) | Portable multi-function lithium battery group detection case | |
| CN204314369U (en) | There is the test pencil of voltage digital detection and temperature acquisition function | |
| CN208818772U (en) | Novel display fault detects pen | |
| CN201845072U (en) | Portable wide-range detection device for voltage-regulating value of voltage-regulator tube | |
| CN203881838U (en) | Low-voltage detection apparatus | |
| CN202916372U (en) | Detection apparatus for lead storage battery | |
| CN201242741Y (en) | Rapid detection/regulation device for USB | |
| CN202693673U (en) | Relay current detection apparatus | |
| CN201804038U (en) | Voltage and current measuring device of entire car | |
| CN206594245U (en) | Compensation lead of thermocouple school line pen | |
| CN216848070U (en) | Storage battery test circuit without distinguishing positive electrode and negative electrode and device thereof | |
| CN110109792A (en) | USB device plug-pull detecting circuit under a kind of operating system off-line state | |
| CN208705424U (en) | A kind of wire rod sequence detection device | |
| CN216560735U (en) | Electric appliance box detection circuit | |
| CN204719123U (en) | A kind of overvoltage undervoltage detection circuit | |
| CN203337761U (en) | Multifunctional line-correcting device | |
| CN211014588U (en) | L ED three-in-one tester | |
| CN217904038U (en) | Portable multifunctional equipment maintenance test power supply | |
| CN215526082U (en) | Detection apparatus for dry battery box connector | |
| CN211206443U (en) | Low-energy-consumption gas detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |