CN201867929U - CPU (Central Processing Unit) miss-pull alarm - Google Patents
CPU (Central Processing Unit) miss-pull alarm Download PDFInfo
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- CN201867929U CN201867929U CN2010206232828U CN201020623282U CN201867929U CN 201867929 U CN201867929 U CN 201867929U CN 2010206232828 U CN2010206232828 U CN 2010206232828U CN 201020623282 U CN201020623282 U CN 201020623282U CN 201867929 U CN201867929 U CN 201867929U
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Abstract
The utility model provides a CPU (Central Processing Unit) miss-pull alarm which mainly comprises an inverter and an alarm module, wherein the forward input end of the inverter is connected with a mainboard power supply VBAT by a resistor R1, the reverse input end of the inverter is grounded, the output end of the inverter is connected with the reverse input end by a resistor R3; one end of the alarm module is electrically connected with the output end of the inverter by a resistor R4, the other end of the alarm module is connected to a CPU socket, and the CPU socket is grounded, therefore, when a CPU is inserted in the CPU socket, the alarm module reminds a tester that the CPU is inserted in the CPU socket, and after the CPU is pulled out of the CPU socket, the alarm loses effectiveness. In the utility model, a light-emitting diode emits light and a buzzer sends out buzzing sound to remind the tester of timely pulling the CPU out of the CPU socket after a testing is finished, so that the situation that the CPU is damaged as the tester forgets to pull the CPU out of a printed circuit board after the testing is finished is avoided.
Description
Technical field
The utility model relates to a kind of alarm, relates in particular to a kind of when carrying out cpu test whether CPU the leakage and pulls out the alarm of reporting to the police.
Background technology
At present in the various processes that need to test again behind the grafting CPU, the tester often forgets after test finishes CPU is pulled out from printed circuit board (PCB), thereby the situation that causes CPU to damage easily takes place.
Summary of the invention
In view of the above problems, the utility model provides a kind of CPU to leak and has pulled out alarm.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of CPU leaks and pulls out alarm, wherein, this alarm mainly comprises: phase inverter, its positive input is connected with motherboard power supply VBAT through resistance R 1, its reverse input end ground connection, its output terminal is connected to reverse input end through resistance R 3; Alarm module, the one end electrically connects through the output terminal of resistance R 4 with phase inverter, its other end is connected to CPU socket, and this CPU socket ground connection, so, when being inserted in CPU on the CPU socket, alarm module reminds tester CPU to be plugged on the CPU socket, after CPU was extracted CPU socket, alarm lost efficacy.
Preferable, the utility model provides a kind of CPU to leak and has pulled out alarm, wherein, described alarm module is the parallel circuit of light emitting diode and hummer, connect with the CPU_PRESENT pin of CPU socket after described light emitting diode and the hummer parallel connection, in addition, described motherboard power supply VBAT is 3.3V (volt), resistance R 1, R3, R4 be set to 1K Ω (kilohm).
Compared to prior art, the utility model provides a kind of CPU to leak and has pulled out alarm, utilize lumination of light emitting diode and hummer to sound a buzzer and remind the tester after test finishes, in time CPU to be extracted from CPU socket, thereby avoided because tester test is forgotten after finishing that CPU is pulled out from printed circuit board (PCB), and the situation that causes CPU to damage takes place.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model
Embodiment
Please refer to shown in Figure 1ly, be circuit diagram of the present utility model.The utility model provides a kind of CPU to leak and has pulled out alarm, utilize lumination of light emitting diode and hummer to sound a buzzer and remind the tester after test finishes, in time CPU is extracted from CPU socket, thereby avoided because tester test is forgotten after finishing that CPU is pulled out from printed circuit board (PCB), and the situation that causes CPU to damage takes place.
Wherein, this CPU leakage is pulled out alarm and is mainly comprised phase inverter T1 and alarm module, the positive input 5 of described phase inverter R1 is connected with motherboard power supply VBAT through resistance R 1, the input end 8 of phase inverter T1 is connected with motherboard power supply VBAT through resistance R 2, described motherboard power supply VBAT is 3.3V (volt), again, reverse input end 4 ground connection of this phase inverter T1, and be connected resistance R 3 between its reverse input end 6 and its output terminal 7.
In addition, described alarm module is the parallel circuit of light emitting diode VD2 and hummer, this light emitting diode VD2 is with after hummer is in parallel, the one end electrically connects through the output terminal 7 of resistance R 4 with phase inverter R1, to this light emitting diode VD2 and hummer, its other end is connected to CPU socket with voltage pulse output.
Preferable, be connected with CPU_PRESENT pin in the CPU socket after described light emitting diode VD2 and the hummer parallel connection, in addition, described motherboard power supply VBAT is 3.3V (volt), resistance R 1, R3, R4 be set to 1K Ω (kilohm).
So, when being inserted in CPU on the CPU socket, CPU_PRESENT pin in the CPU socket links to each other with ground, this CPU leaks and pulls out alarm forming circuit loop, light emitting diode VD2 is luminous, and hummer sends the discontinuity cry, reminds tester CPU still to be plugged on the CPU socket, thereby avoided because tester test is forgotten after finishing that CPU is pulled out from printed circuit board (PCB), and the situation that causes CPU to damage takes place; After CPU was extracted CPU socket, the CPU_PRESENT pin in the CPU socket disconnected with ground, this CPU leak pull out alarm can not the forming circuit loop, therefore, this CPU leaks and pulls out alarm and lost efficacy.
Claims (4)
1. a CPU leaks and pulls out alarm, it is characterized in that this alarm mainly comprises:
Phase inverter (T1), its positive input is connected with motherboard power supply (VBAT) through resistance (R1), its reverse input end ground connection, its output terminal is connected to reverse input end through resistance (R3);
Alarm module, the one end electrically connects through the output terminal of resistance (R4) with phase inverter (T1), and its other end is connected to CPU socket.
2. CPU according to claim 1 leaks and pulls out alarm, it is characterized in that, described alarm module is the parallel circuit of light emitting diode (VD2) and hummer.
3. CPU according to claim 2 leaks and pulls out alarm, it is characterized in that, connects with the CPU_PRESENT pin of CPU socket after described light emitting diode (VD2) and the hummer parallel connection.
4. CPU according to claim 1 leaks and pulls out alarm, it is characterized in that described motherboard power supply (VBAT) is 3.3 volts, and resistance (R1), resistance (R3), resistance (R4) are set to 1 kilohm respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206232828U CN201867929U (en) | 2010-11-25 | 2010-11-25 | CPU (Central Processing Unit) miss-pull alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206232828U CN201867929U (en) | 2010-11-25 | 2010-11-25 | CPU (Central Processing Unit) miss-pull alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867929U true CN201867929U (en) | 2011-06-15 |
Family
ID=44139079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206232828U Expired - Fee Related CN201867929U (en) | 2010-11-25 | 2010-11-25 | CPU (Central Processing Unit) miss-pull alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839016A (en) * | 2012-11-21 | 2014-06-04 | 鸿富锦精密工业(武汉)有限公司 | Computer with CPU protection function |
-
2010
- 2010-11-25 CN CN2010206232828U patent/CN201867929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839016A (en) * | 2012-11-21 | 2014-06-04 | 鸿富锦精密工业(武汉)有限公司 | Computer with CPU protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131125 |