CN203561685U - Level detector of computer power supply - Google Patents
Level detector of computer power supply Download PDFInfo
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- CN203561685U CN203561685U CN201320712206.8U CN201320712206U CN203561685U CN 203561685 U CN203561685 U CN 203561685U CN 201320712206 U CN201320712206 U CN 201320712206U CN 203561685 U CN203561685 U CN 203561685U
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- resistance
- voltage
- resistor
- voltage comparator
- power supply
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Abstract
The utility model discloses a level detector of a computer power supply. The detector comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a voltage stabilizing diode, a potentiometer and an integrated voltage comparator. A first terminal of the first resistor is connected with a first terminal of a second resistor, a first terminal of the fifth resistor, a first terminal of the fourth resistor and an anode voltage input terminal of the integrated voltage comparator respectively and is connected to a positive voltage. A second terminal of the first resistor is connected with a cathode of the voltage stabilizing diode and an inverting input terminal of the integrated voltage comparator respectively. A reference voltage in the level detector of the computer power supply of the utility model is determined by a voltage stabilization value of the voltage stabilizing diode. According to a need, different voltage stabilization values can be selected. An input voltage of the integrated voltage comparator is mainly determined by partial voltage values of the second resistor, the third resistor and the potentiometer. The detector is proportional to a power supply voltage. When a power supply level is too high, an alarm signal can be output so that a computer can immediately adopt protection measures.
Description
Technical field
The utility model relates to a kind of level detector, relates in particular to a kind of level detector of computer power supply.
Background technology
Computing machine belongs to light current product, the operating voltage that is to say parts is lower, generally in positive and negative 12 volts, and be direct current, and common civil power is 220 volts of alternating currents, can not directly on machine element, use, so computing machine is the same with a lot of household electrical appliances needs a power unit, be responsible for common civil power to be converted to the operable voltage of computing machine, be generally arranged on computer-internal.The core component operating voltage of computing machine is very low, and because computer operation frequency is very high, therefore higher to the requirement of power supply.The power supply of computing machine is on-off circuit at present, transfer common alternating current to direct current, by copped wave, control voltage again, different voltage is exported to respectively to the machine elements such as mainboard, hard disk, CD-ROM drive, if the overtension of computer power supply, can cause irreversible damage to computer hardware equipment, therefore need to detect computer power supply level.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem a kind of level detector of computer power supply
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of level detector of computer power supply, comprise the first resistance to the five resistance, voltage stabilizing diode, potentiometer and integrated voltage comparator, the first end of described the first resistance respectively with the first end of described the second resistance, the first end of described the 5th resistance, the cathode voltage input end of the first end of described the 4th resistance and described integrated voltage comparator is connected and connects positive voltage, the second end of described the first resistance is connected with the inverting input of described voltage stabilizing diode negative pole and described integrated voltage comparator respectively, the positive pole of described diode respectively with the sliding end of described potentiometer, the first end of described potentiometer, the cathode voltage input end of the earth terminal of described integrated voltage comparator and described integrated voltage comparator is connected and ground connection, the second end of described potentiometer is connected with the first end of described the 3rd resistance, the second end of described the 3rd resistance is connected with the second end of described the second resistance and the in-phase input end of described integrated voltage comparator respectively, the output terminal of described integrated voltage comparator is connected with the second end of described the 4th resistance, the output terminal of described integrated voltage comparator is high level caution signal output terminal.
The beneficial effects of the utility model are:
Reference voltage in the level detector of the utility model computer power supply is determined by the voltage stabilizing value of voltage stabilizing diode; can select as required different voltage stabilizing values; the input voltage of integrated voltage comparator is mainly determined by the partial pressure value of the second resistance, the 3rd resistance and potentiometer; it is proportional to supply voltage; when power level is too high; its energy outputting alarm signal, makes computing machine take immediately safeguard measure.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the level detector of the utility model computer power supply.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the level detector of the utility model computer power supply, comprise that the first resistance R 1 is to the 5th resistance R 5, voltage stabilizing diode D, potentiometer RP and integrated voltage comparator IC, the first end of the first resistance R 1 respectively with the first end of the second resistance R 2, the first end of the 5th resistance R 5, the cathode voltage input end of the first end of the 4th resistance R 4 and integrated voltage comparator IC is connected and connects positive voltage, the second end of the first resistance R 1 is connected with the inverting input of integrated voltage comparator IC with voltage stabilizing diode D negative pole respectively, the positive pole of diode respectively with the sliding end of potentiometer RP, the first end of potentiometer RP, the cathode voltage input end of the earth terminal of integrated voltage comparator IC and integrated voltage comparator IC is connected and ground connection, the second end of potentiometer RP is connected with the first end of the 3rd resistance R 3, the second end of the 3rd resistance R 3 is connected with the in-phase input end of integrated voltage comparator IC with the second end of the second resistance R 2 respectively, the output terminal of integrated voltage comparator IC is connected with the second end of the 4th resistance R 4, the output terminal of integrated voltage comparator IC is high level caution signal output terminal.
The principle of work of the level detector of the utility model computer power supply is as follows:
The model of integrated voltage comparator IC is LM311; reference voltage in detecting device is determined by the voltage stabilizing value of voltage stabilizing diode D; can select as required different voltage stabilizing values; the input voltage of integrated voltage comparator IC is mainly determined by the partial pressure value of the second resistance R 2, the 3rd resistance R 3 and potentiometer RP; it is proportional to supply voltage; when power level is too high; its energy outputting alarm signal; make computing machine take immediately safeguard measure; the 5th resistance R 5 is feedback resistance; the Main Function of feedback resistance is the upset of accelerating comparer, reduces the transit time of upset.
Claims (1)
1. the level detector of a computer power supply, it is characterized in that: comprise the first resistance to the five resistance, voltage stabilizing diode, potentiometer and integrated voltage comparator, the first end of described the first resistance respectively with the first end of described the second resistance, the first end of described the 5th resistance, the cathode voltage input end of the first end of described the 4th resistance and described integrated voltage comparator is connected and connects positive voltage, the second end of described the first resistance is connected with the inverting input of described voltage stabilizing diode negative pole and described integrated voltage comparator respectively, the positive pole of described diode respectively with the sliding end of described potentiometer, the first end of described potentiometer, the cathode voltage input end of the earth terminal of described integrated voltage comparator and described integrated voltage comparator is connected and ground connection, the second end of described potentiometer is connected with the first end of described the 3rd resistance, the second end of described the 3rd resistance is connected with the second end of described the second resistance and the in-phase input end of described integrated voltage comparator respectively, the output terminal of described integrated voltage comparator is connected with the second end of described the 4th resistance, the output terminal of described integrated voltage comparator is high level caution signal output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320712206.8U CN203561685U (en) | 2013-11-12 | 2013-11-12 | Level detector of computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320712206.8U CN203561685U (en) | 2013-11-12 | 2013-11-12 | Level detector of computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561685U true CN203561685U (en) | 2014-04-23 |
Family
ID=50511399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320712206.8U Expired - Fee Related CN203561685U (en) | 2013-11-12 | 2013-11-12 | Level detector of computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253886A (en) * | 2016-08-24 | 2016-12-21 | 柳州鹏达科技有限责任公司 | Guard of computer circuit |
-
2013
- 2013-11-12 CN CN201320712206.8U patent/CN203561685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253886A (en) * | 2016-08-24 | 2016-12-21 | 柳州鹏达科技有限责任公司 | Guard of computer circuit |
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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: 20140423 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |