CN216979160U - Chargeable formula digital multimeter - Google Patents
Chargeable formula digital multimeter Download PDFInfo
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- CN216979160U CN216979160U CN202122598611.9U CN202122598611U CN216979160U CN 216979160 U CN216979160 U CN 216979160U CN 202122598611 U CN202122598611 U CN 202122598611U CN 216979160 U CN216979160 U CN 216979160U
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Abstract
The utility model discloses a rechargeable digital multimeter, which comprises a common digital multimeter, wherein a power switch is arranged on a casing of the multimeter. Still be equipped with the mouth that charges on the casing, be equipped with integrative module and the lithium cell of boosting of charging in the casing, the anodal feeler of battery input end and the switch of integrative module of boosting of charging passes through the wire and is connected, and another feeler of switch passes through the wire with the anodal lithium cell and is connected, and the lithium cell negative pole passes through the wire with the battery input end negative pole of the integrative module of boosting of charging and is connected, the positive negative pole of the output of the integrative module of boosting of charging passes through the wire with the battery interface positive negative pole of digital multimeter and is connected. The circuit structure and the whole structure of the utility model are simple and cheap, most parts in the improved circuit are positioned in the shell, the debugging working efficiency is improved, the construction cost is saved, and good economic and social benefits are obtained.
Description
Technical Field
The utility model relates to a rechargeable digital multimeter, in particular to a special rechargeable multimeter for field construction, and belongs to the technical field of multi-range measuring instrument tools.
Background
The universal meter is frequently used in each construction project of a branch company and is mainly used for measuring resistance in the project debugging process; measuring direct current and alternating current voltages; direct current, alternating current's measurement etc. use victory tablet universal meter in the construction at present, this kind of universal meter power consumptive height, at measuring signal and the big project of test cable core break-make volume, often will change the battery, influenced the construction progress.
Disclosure of Invention
The utility model aims to provide a rechargeable digital multimeter, which is used for solving the technical problems of inconvenience in use and high power consumption of a common battery-mounted multimeter in the prior art.
The utility model adopts the following technical scheme: a rechargeable digital multimeter comprises a common digital multimeter, and a power switch is arranged on a casing of the multimeter. Still be equipped with the mouth that charges on the casing, be equipped with integrative module and the lithium cell of boosting of charging in the casing, the input and the mouth that charges of integrative module of boosting are connected, the anodal feeler of battery end and the switch of integrative module of boosting that charges passes through the wire and is connected, and another feeler of switch passes through the wire with the lithium cell positive pole and is connected, and the lithium cell negative pole passes through the wire with the battery end negative pole of integrative module of boosting that charges and is connected, the positive negative pole of the voltage output end of integrative module of boosting that charges passes through the wire with digital multimeter's battery interface positive negative pole and is connected.
The model of the charging and boosting integrated module is J5019.
The charging and boosting integrated module is provided with a charging interface, the charging interface is an MICRO interface, the charging voltage is 4.2V, the charging current is 1A at the maximum, and the charging and boosting integrated module is arranged on the side face of the shell.
And a voltage regulating knob is arranged on the charging and boosting integrated module to regulate the output voltage to be fixed and output 9V.
The power switch is a two-pin two-gear ship-shaped switch with the specification of 250V 6A and is arranged on the side face of the machine shell.
The lithium battery is a 802535 polymer lithium battery, and has the functions of overcharge, overdischarge and short-circuit protection, the nominal voltage is 3.7V, and the capacity is 800 mAh.
The charging and boosting integrated module and the lithium battery are installed in a battery bin of a casing of the digital multimeter, and a charging port and a power switch are arranged on the side edge of the casing.
The utility model has the beneficial effects that:
the process of measuring multiple signals by using the utility model is as follows: before the universal meter is used, a switch on the side edge of the meter case is turned on, a POWER switch on the universal meter is pressed down, the electric quantity is checked, if the voltage is insufficient, the electric quantity is displayed on a display, and charging is needed at the moment.
When measuring the resistance, firstly inserting the red meter pen into the V omega hole and inserting the black meter pen into the COM hole, and then striking the proper position of the omega measuring range by the measuring range knob, respectively connecting the metal parts at two ends of the resistance by the red meter pen and the black meter pen, and reading out the data displayed on the display screen.
And (3) measuring direct-current voltage, inserting a red meter pen into the V omega hole, inserting a black meter pen into the COM hole, and reading data displayed on the display screen when the range knob is turned to a proper V-DC position.
And (3) measuring the alternating voltage, inserting a red meter pen into the V omega hole, inserting a black meter pen into the COM hole, and reading data displayed on the display screen when the range knob is turned to a proper position from V to AC.
The direct current measurement, break off the circuit first, black pen-shape metre inserts com port, and the red pen-shape metre inserts mA or 20A port, and function rotary switch turns on to A-DC, and selects suitable range, disconnects the circuit under test, connects digital multimeter in series into the circuit under test, and the electric current flows into the red pen-shape metre from one end in the circuit under test, flows out through the black pen-shape metre of multimeter, and then flows into the circuit under test, and the access circuit reads out the data on the display screen.
The alternating current is measured by firstly disconnecting the circuit, inserting the black pen into the com port, inserting the red pen into the mA or 20A port, turning the functional rotary switch to A-AC, selecting a proper measuring range, disconnecting the measured line, connecting the digital multimeter into the measured line in series, enabling the current in the measured line to flow into the red pen from one end, flowing out through the black pen of the multimeter, and then flowing into the measured line, accessing the circuit, and reading out the data on the display screen.
The circuit structure and the whole structure of the utility model are simple and cheap, most parts in the improved circuit are positioned in the shell, and the circuit board and the components are sealed by using the stick glue, so that the circuit board and the components are not easy to damage and damp when in use, the circuit board is convenient to carry in the construction process, can be circularly charged for use, can effectively control the manual input, saves the construction cost while improving the debugging working efficiency, and obtains good economic benefit and social benefit. The output power supply of the lithium battery is controlled through the main power switch in the using process, so that the electric quantity is saved, and the service life is prolonged.
Drawings
FIG. 1 is an exterior plan view of a rechargeable digital multimeter in accordance with one embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a circuit diagram of a modified internal circuit of the rechargeable digital multimeter of FIG. 1.
In the figure, 1-charging and boosting integrated module, 2-power switch, 3-lithium battery, 4-common digital multimeter and 5-charging port.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
The external structure of the rechargeable digital multimeter of the embodiment of the utility model is shown in fig. 1 to fig. 3, the rechargeable digital multimeter of the embodiment comprises a common digital multimeter 4, and a power switch 2 is arranged on the common digital multimeter 4. Still be equipped with charge mouthful 5 on ordinary digital multimeter 4, be equipped with in ordinary digital multimeter 4 and charge integrative module 1 and lithium cell 3 that steps up, charge the input and the mouth 5 that charges of integrative module 1 that steps up and be connected.
As shown in fig. 4, the positive electrode of the battery end of the charging and boosting integrated module 1 is connected with one antenna of the power switch 2 through a wire, the other antenna of the power switch 2 is connected with the positive electrode of the lithium battery 3 through a wire, the negative electrode of the lithium battery 3 is connected with the negative electrode of the battery end of the charging and boosting integrated module 1 through a wire, and the positive electrode and the negative electrode of the voltage output end of the charging and boosting integrated module 1 are connected with the positive electrode and the negative electrode of the battery interface of the ordinary digital multimeter 4 through wires. In the charging mode, the battery end of the charging and boosting integrated module 1 is used as a voltage output end to charge the lithium battery 3; in the multimeter use, the battery end of the charging and boosting integrated module 1 receives the electric energy of the lithium battery 3 as a voltage input end, and supplies power to the multimeter through the voltage output end of the charging and boosting integrated module 1.
The model of the charging and boosting integrated module 1 is J5019.
The integrated charging and boosting module 1 is provided with a charging interface 5, the charging interface 5 is a MICRO interface, the charging voltage is 4.2V, the charging current is 1A at the maximum, and the integrated charging and boosting module is arranged on the side face of the shell.
And the charging and boosting integrated module 1 is provided with a voltage regulating knob for regulating the output voltage to be fixed and outputting 9V.
The power switch 2 is a two-pin two-gear ship-shaped switch with the specification of 250V 6A and is arranged on the side face of the machine shell.
The lithium battery 3 is a 802535 polymer lithium battery, and has the functions of overcharge, overdischarge and short-circuit protection, the nominal voltage is 3.7V, and the capacity is 800 mAh.
The charging and boosting integrated module 1 and the lithium battery 3 are installed in a battery bin of a common digital multimeter 4, and a charging port and a power switch are arranged on the side edge of the common digital multimeter 4.
The process of measuring multiple signals by using the utility model is as follows: before the universal meter is used, a switch on the side edge of the meter case is turned on, a POWER switch on the universal meter is pressed down, the electric quantity is checked, if the voltage is insufficient, the electric quantity is displayed on a display, and charging is needed at the moment.
When measuring the resistance, firstly inserting the red meter pen into the V omega hole and inserting the black meter pen into the COM hole, and then striking the proper position of the omega measuring range by the measuring range knob, respectively connecting the metal parts at two ends of the resistance by the red meter pen and the black meter pen, and reading out the data displayed on the display screen.
And (3) measuring direct-current voltage, inserting a red meter pen into the V omega hole, inserting a black meter pen into the COM hole, and reading data displayed on the display screen when the range knob is turned to a proper V-DC position.
And (3) measuring the alternating voltage, inserting a red meter pen into the V omega hole, inserting a black meter pen into the COM hole, and reading data displayed on the display screen when the range knob is turned to a proper position from V to AC.
The direct current measurement, break off the circuit first, black pen-shape metre inserts com port, and the red pen-shape metre inserts mA or 20A port, and function rotary switch turns on to A-DC, and selects suitable range, disconnects the circuit under test, connects digital multimeter in series into the circuit under test, and the electric current flows into the red pen-shape metre from one end in the circuit under test, flows out through the black pen-shape metre of multimeter, and then flows into the circuit under test, and the access circuit reads out the data on the display screen.
The alternating current is measured by firstly disconnecting the circuit, inserting the black pen into the com port, inserting the red pen into the mA or 20A port, turning the functional rotary switch to A-AC, selecting a proper measuring range, disconnecting the tested line, connecting the digital multimeter into the tested line in series, enabling the current in the tested line to flow into the red pen from one end, flowing out through the black pen of the multimeter, then flowing into the tested line, connecting the circuit, and reading out the data on the display screen.
The foregoing shows and describes the general principles, principal features and advantages of the utility model. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (8)
1. A rechargeable digital multimeter comprises a common digital multimeter, wherein a shell of the multimeter is provided with a power switch; the method is characterized in that: still be equipped with the mouth that charges on the casing, be equipped with integrative module and the lithium cell of boosting of charging in the casing, the input and the mouth that charges of integrative module of boosting are connected, the anodal feeler of battery end and the switch of integrative module of boosting that charges passes through the wire and is connected, and another feeler of switch passes through the wire with the lithium cell positive pole and is connected, and the lithium cell negative pole passes through the wire with the battery end negative pole of integrative module of boosting that charges and is connected, the positive negative pole of the voltage output end of integrative module of boosting that charges passes through the wire with digital multimeter's battery interface positive negative pole and is connected.
2. A rechargeable digital multimeter as claimed in claim 1, wherein: the model of the charging and boosting integrated module is J5019.
3. A rechargeable digital multimeter as claimed in claim 2, wherein: the interface that charges of integrative module that steps up is the MICRO interface, and charging voltage 4.2V, the biggest 1A of charging current set up the side at the casing.
4. A rechargeable digital multimeter as claimed in claim 2, wherein: and a voltage regulating knob is arranged on the charging and boosting integrated module to regulate the output voltage to be fixed and output 9V.
5. A rechargeable digital multimeter as claimed in claim 1, wherein: the power switch is a two-pin two-gear boat-shaped switch with the specification of 250V 6A and is arranged on the side face of the machine shell.
6. A rechargeable digital multimeter as claimed in claim 1, wherein: the lithium battery is a 802535 polymer lithium battery, and has the functions of overcharge, overdischarge and short-circuit protection, the nominal voltage is 3.7V, and the capacity is 800 mAh.
7. A rechargeable digital multimeter as claimed in claim 1, wherein: integrative module and lithium cell that step up charge are installed in the battery compartment of digital multimeter casing, mouth, the switch setting that charges are at the side of casing.
8. A rechargeable digital multimeter as claimed in claim 1, wherein: and sealing the circuit board and the components of the multimeter by using the glue stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122598611.9U CN216979160U (en) | 2021-10-27 | 2021-10-27 | Chargeable formula digital multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122598611.9U CN216979160U (en) | 2021-10-27 | 2021-10-27 | Chargeable formula digital multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216979160U true CN216979160U (en) | 2022-07-15 |
Family
ID=82343997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122598611.9U Active CN216979160U (en) | 2021-10-27 | 2021-10-27 | Chargeable formula digital multimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216979160U (en) |
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2021
- 2021-10-27 CN CN202122598611.9U patent/CN216979160U/en active Active
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