CN207408489U - Circuit board detection equipment - Google Patents
Circuit board detection equipment Download PDFInfo
- Publication number
- CN207408489U CN207408489U CN201720504583.0U CN201720504583U CN207408489U CN 207408489 U CN207408489 U CN 207408489U CN 201720504583 U CN201720504583 U CN 201720504583U CN 207408489 U CN207408489 U CN 207408489U
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- circuit board
- measured
- detection equipment
- measuring device
- board detection
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Abstract
A kind of circuit board detection equipment described in the utility model, test device including test circuit plate, measuring device, power supply and two connecting lines for measuring resistance value, the positive and negative both ends of two connecting lines connection power supply and the both ends of body to be measured, the circuit board measuring apparatus further comprises two measurement lines, the both ends of two measurements line connection measuring device and the both ends of body to be measured, and body to be measured is made to be connected in parallel with measuring device.Circuit board detection equipment described in the utility model is hardly influenced by conducting wire internal resistance, can accurately measure resistance value, measuring accuracy and stability is substantially improved, minimum precision is up to 0.01 ohm.
Description
Technical field
The utility model is related to testing field more particularly to a kind of circuit board detection equipments.
Background technology
Traditional circuit board test apparatus to resistance measurement using measure with two cable technology, due to the presence of conducting wire internal resistance, only
It can make more rough measurement, accuracy is low, easily causes the dead angle of measurement.Because being subject to the shadow of the contact resistances such as probe, winding displacement, circuit
It rings, 10 below Ω resistance can not be measured accurately.
Utility model content
The utility model is to overcome the shortage of prior art, and provides a kind of circuit board detection equipment.
Specifically, a kind of circuit board detection equipment described in the utility model, the test device including test circuit plate are surveyed
Measure measuring device, power supply and two connecting lines of resistance value, the positive and negative both ends of two connecting lines connection power supply and body to be measured
Both ends, the circuit board measuring apparatus further comprise two measurement lines, it is described two measurement line connection measuring device two
End and the both ends of body to be measured, and body to be measured is made to be connected in parallel with measuring device.
Further, the measuring device is voltmeter.
Further, the electric currents by two measurement lines level off to 0.
Circuit board detection equipment described in the utility model is hardly influenced by conducting wire internal resistance, can accurately measure resistance
Value, is substantially improved measuring accuracy and stability, minimum precision is up to 0.01 ohm.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model circuit board detection equipment；
Specific embodiment
Below in conjunction with attached drawing, circuit board detection equipment described in the utility model is illustrated without limitation, purpose
It is in order to which the public more fully understands the technology contents.
Such as Fig. 1, circuit board detection equipment 100 described in the utility model, for testing circuit board, including surveying
It tries the test device (not shown) of circuit board, measure measuring device 1, power supply 2 and two connecting lines 4,5 of resistance value, described two
Root connecting line 4,5 connects the positive and negative both ends of power supply 2 and the both ends of body 3 to be measured.The measuring device 1 is voltmeter.
The circuit board measuring apparatus 100 further comprises two measurement lines 6,7, and two measurements connection of line 6,7 is surveyed
The both ends of device 1 and the both ends of body 3 to be measured are measured, and body 3 to be measured is made to be connected in parallel with measuring device 1.After being powered up, pass through
It is equal and level off to 0 to measure the electric current of line 6,7, therefore the voltage of 3 both sides of body to be measured is approximately equal to Rm1、Rm2(measurement line 6,7 etc.
Imitate resistance) voltage of both sides, that is, the voltage value that measures of measuring device is approximately equal to the voltage of body to be measured.And according to ammeter 8
Reading, you can directly calculate the resistance value of body to be measured.Due to Rm1、Rm2The pressure drop of (measurement line 6,7) can almost be ignored not
Meter, will not be influenced, therefore the resistance value precision measured is higher as in the prior art be subject to the internal resistance of connecting line 4,5.
Circuit board detection equipment described in the utility model is hardly influenced by conducting wire internal resistance, can accurately measure resistance
Value, is substantially improved measuring accuracy and stability, minimum precision is up to 0.01 ohm.
It should be understood that the above is not the limitation to the technical solution, in fact, all with identical or approximate original
Manage the improvement carried out to the technical solution, the improvement of shape, size, material used including each several part and identity function
The replacement of element, all within the technical solution of the requires of the utility model protection.
Claims (3)
1. a kind of circuit board detection equipment, the test device including test circuit plate, the measuring device for measuring resistance value, power supply and
Two connecting lines, the positive and negative both ends of two connecting lines connection power supply and the both ends of body to be measured, it is characterised in that：The circuit
Plate measuring apparatus further comprises two measurement lines, the both ends and the two of body to be measured of two measurements line connection measuring device
End, and body to be measured is made to be connected in parallel with measuring device.
2. circuit board detection equipment according to claim 1, it is characterised in that：The measuring device is voltmeter.
3. circuit board detection equipment according to claim 1, it is characterised in that：Electric current by described two measurement lines becomes
It is bordering on 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504583.0U CN207408489U (en) | 2017-05-09 | 2017-05-09 | Circuit board detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504583.0U CN207408489U (en) | 2017-05-09 | 2017-05-09 | Circuit board detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207408489U true CN207408489U (en) | 2018-05-25 |
Family
ID=62322136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720504583.0U Active CN207408489U (en) | 2017-05-09 | 2017-05-09 | Circuit board detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207408489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542009A (en) * | 2022-11-28 | 2022-12-30 | 苏州慧工云信息科技有限公司 | Automatic detection system and method for electrical performance of copper bar |
-
2017
- 2017-05-09 CN CN201720504583.0U patent/CN207408489U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542009A (en) * | 2022-11-28 | 2022-12-30 | 苏州慧工云信息科技有限公司 | Automatic detection system and method for electrical performance of copper bar |
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