CN204536467U - A kind of pcb board short-circuit detecting circuit - Google Patents
A kind of pcb board short-circuit detecting circuit Download PDFInfo
- Publication number
- CN204536467U CN204536467U CN201520281738.XU CN201520281738U CN204536467U CN 204536467 U CN204536467 U CN 204536467U CN 201520281738 U CN201520281738 U CN 201520281738U CN 204536467 U CN204536467 U CN 204536467U
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- electric capacity
- pcb board
- circuit
- 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
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of pcb board short-circuit detecting circuit, comprise power supply, triode VT1, triode VT2, light emitting diode D1, resistance R1 and electric capacity C1.The utility model circuit utilizes the little and measurable resistance of pcb board line itself, then coordinates low pressure to encourage direct current can detect bad tie point, and circuit structure is simple, and easy to use, scope of patrolling and examining is little, accurate positioning, is applicable to promoting the use of.
Description
Technical field
The utility model relates to a kind of testing circuit, specifically a kind of pcb board short-circuit detecting circuit.
Background technology
In current PCB manufacture process, there are some bad tie points, conventional on off test equipment cannot find the short circuit between these circuits, the circuit of short circuit is not found in time, product yield is caused to decline, fault is there is after causing client's installation elements, although strict detection all can be done to pcb board before dispatching from the factory by a lot of PCB factory now, but be limited to yields, always have in underproof product introduction client hand, and client welds rear discovery cannot use, and the pcb board design of a lot of client is complicated, welding difficulty is large, if reselect pcb board to weld, the significant wastage in man-hour can be caused, at this moment find short dot and attempt repairing the first-selection just becoming client.More existing testing tool detection meanss are complicated, and need to carry out multiple spot detection, reduce the scope one by one, waste time and energy, detection difficulty is large.
Utility model content
The purpose of this utility model be to provide a kind of structure simple, be easy to promote, pcb board short-circuit detecting circuit easy to use, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of pcb board short-circuit detecting circuit, comprises power supply, triode VT1, triode VT2, light emitting diode D1, resistance R1 and electric capacity C1, described power supply one end is connecting triode VT1 emitter and triode VT2 emitter respectively, triode VT1 base stage contact resistance R2, and the resistance R2 other end is connecting triode VT1 collector respectively, resistance R1 and triode VT2 base stage, resistance R1 linking probe A, described triode VT2 collector connects electric capacity C3 respectively, light emitting diode D1 positive pole and chip U1 pin 7, the electric capacity C3 other end connect the power supply other end respectively, light emitting diode D2 negative pole, chip U1 pin 4 and resistance R8, resistance R8 other end linking probe B, described chip U1 pin 6 is contact resistance R7 respectively, resistance R3 and electric capacity C1, the resistance R7 other end is connecting luminous diode D1 negative pole respectively, light emitting diode D2 positive pole, resistance R6 and electric capacity C2, the electric capacity C2 other end is contact resistance R5 respectively, the resistance R6 other end and chip U1 pin 3, chip U1 pin 2 contact resistance R4 respectively, the resistance R3 other end and the electric capacity C1 other end, resistance R4 other end linking probe C, described resistance R5 other end linking probe D.
As further program of the utility model: described chip U1 model is LTC115.
As the utility model further scheme: described supply voltage is 6V.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit utilizes the little and measurable resistance of pcb board line itself, low pressure is coordinated to encourage direct current can detect bad tie point again, circuit structure is simple, easy to use, scope of patrolling and examining is little, accurate positioning, is applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram of pcb board short-circuit detecting circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of pcb board short-circuit detecting circuit, comprises power supply, triode VT1, triode VT2, light emitting diode D1, resistance R1 and electric capacity C1, power supply one end is connecting triode VT1 emitter and triode VT2 emitter respectively, triode VT1 base stage contact resistance R2, and the resistance R2 other end is connecting triode VT1 collector respectively, resistance R1 and triode VT2 base stage, resistance R1 linking probe A, triode VT2 collector connects electric capacity C3 respectively, light emitting diode D1 positive pole and chip U1 pin 7, the electric capacity C3 other end connect the power supply other end respectively, light emitting diode D2 negative pole, chip U1 pin 4 and resistance R8, resistance R8 other end linking probe B, chip U1 pin 6 is contact resistance R7 respectively, resistance R3 and electric capacity C1, the resistance R7 other end is connecting luminous diode D1 negative pole respectively, light emitting diode D2 positive pole, resistance R6 and electric capacity C2, the electric capacity C2 other end is contact resistance R5 respectively, the resistance R6 other end and chip U1 pin 3, chip U1 pin 2 contact resistance R4 respectively, the resistance R3 other end and the electric capacity C1 other end, resistance R4 other end linking probe C, resistance R5 other end linking probe D.
Chip U1 model is LTC115.
Supply voltage is 6V.
Principle of work of the present utility model is: the utility model circuit utilizes the little and measurable resistance of pcb board line itself, low pressure is coordinated to encourage direct current can detect bad tie point again, chip U1 can detect the voltage produced on micro-ohm magnitude resistance, during detection, probe A and probe B is received the line of short circuit, probe C and probe D touches short circuit line is separated by certain point of more than 1cm, electric current on copper cash between probe C and probe D is by the positive voltage of generation tens microvolt to tens person of outstanding talent's volts, when this voltage makes amplifier imbalance cause output to make light emitting diode D1 luminous reversed polarity, light emitting diode D2 is luminous, so patrol and examine the position that several point can judge short dot.
Claims (3)
1. a pcb board short-circuit detecting circuit, comprises power supply, triode VT1, triode VT2, light emitting diode D1, resistance R1 and electric capacity C1, is characterized in that, described power supply one end is connecting triode VT1 emitter and triode VT2 emitter respectively, triode VT1 base stage contact resistance R2, and the resistance R2 other end is connecting triode VT1 collector respectively, resistance R1 and triode VT2 base stage, resistance R1 linking probe A, described triode VT2 collector connects electric capacity C3 respectively, light emitting diode D1 positive pole and chip U1 pin 7, the electric capacity C3 other end connect the power supply other end respectively, light emitting diode D2 negative pole, chip U1 pin 4 and resistance R8, resistance R8 other end linking probe B, described chip U1 pin 6 is contact resistance R7 respectively, resistance R3 and electric capacity C1, the resistance R7 other end is connecting luminous diode D1 negative pole respectively, light emitting diode D2 positive pole, resistance R6 and electric capacity C2, the electric capacity C2 other end is contact resistance R5 respectively, the resistance R6 other end and chip U1 pin 3, chip U1 pin 2 contact resistance R4 respectively, the resistance R3 other end and the electric capacity C1 other end, resistance R4 other end linking probe C, described resistance R5 other end linking probe D.
2. pcb board short-circuit detecting circuit according to claim 1, is characterized in that, described chip U1 model is LTC115.
3. pcb board short-circuit detecting circuit according to claim 1, is characterized in that, described supply voltage is 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281738.XU CN204536467U (en) | 2015-04-25 | 2015-04-25 | A kind of pcb board short-circuit detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281738.XU CN204536467U (en) | 2015-04-25 | 2015-04-25 | A kind of pcb board short-circuit detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204536467U true CN204536467U (en) | 2015-08-05 |
Family
ID=53750453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520281738.XU Expired - Fee Related CN204536467U (en) | 2015-04-25 | 2015-04-25 | A kind of pcb board short-circuit detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204536467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946459A (en) * | 2021-02-26 | 2021-06-11 | 天津中德应用技术大学 | Device and method for detecting short-circuit fault point of finished printed circuit board |
| CN113466738A (en) * | 2021-05-31 | 2021-10-01 | 广东朝阳电子科技股份有限公司 | Short circuit detection circuit |
-
2015
- 2015-04-25 CN CN201520281738.XU patent/CN204536467U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946459A (en) * | 2021-02-26 | 2021-06-11 | 天津中德应用技术大学 | Device and method for detecting short-circuit fault point of finished printed circuit board |
| CN113466738A (en) * | 2021-05-31 | 2021-10-01 | 广东朝阳电子科技股份有限公司 | Short circuit detection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204536467U (en) | A kind of pcb board short-circuit detecting circuit | |
| CN202512197U (en) | State detecting system for fuse protectors of combiner box | |
| CN204156136U (en) | A kind of can the ground clamp of detection streamer break-make | |
| CN202013925U (en) | Lithium cell activated circuit | |
| CN102608492A (en) | System and method for detecting fuse state of combiner box | |
| CN206649100U (en) | A kind of MWT photovoltaic modulies conductive core plate internal short-circuit verifying attachment | |
| CN201955427U (en) | Low-current ground fault detection indicator | |
| CN202260547U (en) | Charging circuit for charging super capacitor | |
| CN204067750U (en) | A kind of leakage protecting plug | |
| CN202351361U (en) | Open-circuit and short-circuit testing device for printed circuit board (PCB) | |
| CN203490312U (en) | Aging detection circuit of grounding wire of electric equipment | |
| CN202948081U (en) | Electronic detection device for building fire-fighting equipments | |
| CN206211534U (en) | A kind of reverse power connection protection device of Electronic-Lab | |
| CN201548611U (en) | Inductive test pencil | |
| CN201569676U (en) | Make-and-break device of AC power supply | |
| CN202676866U (en) | Cigarette PCBA detection device | |
| CN204481781U (en) | A kind of timing switch circuit | |
| CN204425184U (en) | A kind of two-supply circuit | |
| CN204156560U (en) | Reserve battery power supply circuits | |
| CN204407296U (en) | A kind of through hole testing apparatus for back contact solar cell sheet | |
| CN204130877U (en) | A kind of electrician clamps with portable point sealing wire | |
| CN103472345A (en) | Aging detection circuit of grounding wire of electric equipment | |
| CN203337761U (en) | Multifunctional line-correcting device | |
| CN202102063U (en) | Convenient detector for checking nixie tubes | |
| CN209432935U (en) | Line detecting tool |
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: 20150805 Termination date: 20160425 |