CN202794292U - Device for testing standby current - Google Patents
Device for testing standby current Download PDFInfo
- Publication number
- CN202794292U CN202794292U CN 201220303803 CN201220303803U CN202794292U CN 202794292 U CN202794292 U CN 202794292U CN 201220303803 CN201220303803 CN 201220303803 CN 201220303803 U CN201220303803 U CN 201220303803U CN 202794292 U CN202794292 U CN 202794292U
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- China
- Prior art keywords
- multimeter
- test
- standby current
- normally closed
- closed switch
- 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.)
- Expired - Fee Related
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Abstract
A device for testing a standby current consists of a universal meter and a switch; wherein the switch is connected in parallel with two meter pens of the universal meter. The device of the utility model can avoid burnout of the universal meter due to an overloaded impact current in the premise of ensuring an original precision of the universal meter. The device of the utility model is used for testing the standby currents of car audios, televisions, air-conditionings, and computers.
Description
Technical field
The utility model relates to a kind of device of testing standby current, particularly a kind of device of avoiding the test standby current that multimeter burns because dash current is excessive.
Background technology
Under green trend, the standby current of electrical equipment requires more and more less.In the automobile audio industry, standby current is by former 3mA 0.1mA till now.But the complete machine maximum current can reach 10A, and this is a challenge to measuring standby current, large electric capacity stabilized supply voltage is arranged in the machine and transient current is provided.
Existing survey standby current method is to get to the mA shelves with multimeter to be connected on the circuit and to test, but because large capacitor charging current peak moment can reach several amperes, the fuse of multimeter just was blown through the moment of the test of being everlasting.For fear of this situation, some human thin copper wire replaces fuse, but makes so again multimeter can not get protection and damage, but also has increased error.
Summary of the invention
The purpose of this utility model is to overcome the problem that prior art exists, and a kind of test standby current method of avoiding multimeter to burn because dash current is excessive is provided.
The purpose of this utility model realizes by following proposal:
A kind of device of testing standby current is made of multimeter and regular tap.Described regular tap is in parallel with two test pencils of multimeter.During measurement, first regular tap is beaten at closure state, connected circuit according to the using method of multimeter, electric current flows through and without multimeter from regular tap, after circuit is stable, regular tap is beaten in off-state again, the electric current multimeter of flowing through, multimeter display measurement value.
A kind of device of testing standby current is made of multimeter and normally closed switch; Normally closed switch is in parallel with two test pencils of multimeter.During measurement, be connected on the circuit by normal mode, electric current flows through and without multimeter, when circuit is stablized, opens normally closed switch from normally closed switch, and switch disconnects, the electric current multimeter of flowing through, and at this moment the reading of multimeter is exactly measured value.
This device is used for the test of the standby current of automobile audio, TV, air-conditioning, computer.
Described normally closed switch is preferably mechanical switch or electronic switch.
The utility model is existing for prior art, has following preferential and beneficial effect:
1, switch is in parallel with multimeter in the utility model, and the dash current during test flows away via switch, can not impact multimeter, thereby reaches the purpose of protection multimeter;
2, the utility model is not made any replacement to the fuse of multimeter, has guaranteed the original precision of multimeter.
Description of drawings
Fig. 1 is the utility model product structure block diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but embodiment of the present utility model is not limited to this.
Embodiment 1
The utility model is made the test accessories form.Annex comprises regular tap and multimeter interface, during measurement the test pencil of multimeter is received the interface of test accessories, regular tap is beaten at closure state, using method according to multimeter connects circuit again, electric current flows through and without multimeter from switch, after circuit is stable, regular tap is beaten in off-state again, the electric current multimeter of flowing through, the reading of multimeter is exactly measured value.
Regular tap is in parallel with multimeter in the utility model, and the dash current during test flows away via switch, can not impact multimeter, thereby reaches the purpose of protection multimeter, does not relate to simultaneously the change of the fuse of multimeter, has guaranteed the original precision of multimeter.
Embodiment 2
The utility model is parallel to the multimeter the inside with normally closed switch, be defined as a function key, multimeter increases a standby current and measures shelves, when measuring standby current, multimeter is threaded to standby current and measures shelves, connects circuit, then make normally closed switch switch to off-state by described function key, treat current stabilization, the read current reading, this reading is standby current numerical value.The default time that normally closed switch is in off-state can be arranged by the user, and scope is 5 ~ 20 seconds, and this is set to 15 seconds.
Switch is in parallel with multimeter in the utility model, and the dash current during test flows away via switch, can not impact multimeter, thereby reaches the purpose of protection multimeter, does not relate to simultaneously the change of the fuse of multimeter, has guaranteed the original precision of multimeter.
Claims (7)
1. a device of testing standby current is characterized in that: be made of multimeter and regular tap; Described regular tap is in parallel with two test pencils of multimeter.
2. the device of test standby current according to claim 1 is characterized in that: described regular tap is made test accessories; Regular tap is in parallel by two test pencils of the multimeter interface on the annex and multimeter.
3. a device of testing standby current is characterized in that: be made of multimeter and normally closed switch; Described normally closed switch is in parallel with two test pencils of multimeter.
4. the device of test standby current according to claim 3, it is characterized in that: described normally closed switch is mechanical switch or electronic switch.
5. the device of test standby current according to claim 4 is characterized in that: described normally closed switch is made test accessories; Normally closed switch is in parallel by two test pencils of the multimeter interface on the annex and multimeter.
6. the device of test standby current according to claim 5 is characterized in that: described normally closed switch is parallel to the multimeter the inside, is defined as a function key, and multimeter increases a standby current and measures shelves; Described function key control normally closed switch switches to off-state.
7. the device of test standby current according to claim 6, it is characterized in that: the default time that normally closed switch is in off-state is 5 ~ 20 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303803 CN202794292U (en) | 2012-06-27 | 2012-06-27 | Device for testing standby current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303803 CN202794292U (en) | 2012-06-27 | 2012-06-27 | Device for testing standby current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794292U true CN202794292U (en) | 2013-03-13 |
Family
ID=47821534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220303803 Expired - Fee Related CN202794292U (en) | 2012-06-27 | 2012-06-27 | Device for testing standby current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794292U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991102A (en) * | 2015-06-29 | 2015-10-21 | 深圳市创荣发电子有限公司 | Weak current test automatic switching device |
| CN105759110A (en) * | 2014-12-19 | 2016-07-13 | 中国电子科技集团公司第十八研究所 | Leak current testing method for anti-open-circuit protection diode assembly of hydrogen-nickel battery |
| CN108717138A (en) * | 2018-05-31 | 2018-10-30 | Oppo（重庆）智能科技有限公司 | A kind of substrate current test circuit and system |
| CN110068721A (en) * | 2018-01-24 | 2019-07-30 | 中科院微电子研究所昆山分所 | A kind of test device of electric lockset electric current |
-
2012
- 2012-06-27 CN CN 201220303803 patent/CN202794292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759110A (en) * | 2014-12-19 | 2016-07-13 | 中国电子科技集团公司第十八研究所 | Leak current testing method for anti-open-circuit protection diode assembly of hydrogen-nickel battery |
| CN104991102A (en) * | 2015-06-29 | 2015-10-21 | 深圳市创荣发电子有限公司 | Weak current test automatic switching device |
| CN110068721A (en) * | 2018-01-24 | 2019-07-30 | 中科院微电子研究所昆山分所 | A kind of test device of electric lockset electric current |
| CN108717138A (en) * | 2018-05-31 | 2018-10-30 | Oppo（重庆）智能科技有限公司 | A kind of substrate current test circuit and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130313 Termination date: 20140627 |
|
| EXPY | Termination of patent right or utility model |