CN2362133Y - Voltage regulating automatic indicator for power supply device - Google Patents
Voltage regulating automatic indicator for power supply device Download PDFInfo
- Publication number
- CN2362133Y CN2362133Y CN 98241968 CN98241968U CN2362133Y CN 2362133 Y CN2362133 Y CN 2362133Y CN 98241968 CN98241968 CN 98241968 CN 98241968 U CN98241968 U CN 98241968U CN 2362133 Y CN2362133 Y CN 2362133Y
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- voltage
- power supply
- comparer
- voltage divider
- supply unit
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Abstract
The utility model relates to a voltage regulating automatic indicating device for power supply suppliers, comprising a power supply, three voltage dividers, two comparators a touching through circuit and an indicating lamp. The two of dividers are respectively connected with the power supply for generating reference voltage, the two comparators are respectively connected with the two of voltage dividers and are also respectively connected with the touching through circuit which is connected with the indicating lamp, and the third voltage divider is connected with an output end of a power supply supplier, divides output voltage and generates a comparison voltage to the two of comparators. When the compared voltage is between two reference voltages, the utility model outputs high electric potential signals for triggering the touching through circuit for lighting the indicating lamp, and otherwise the utility model outputs lower electric potential signals for extinguishing the indicating lamp.
Description
The utility model relates to the automatic indicating device of voltage adjustment of a kind of power supply unit, particularly a kind of power supply unit, and this device can reach automatic indication, and can guarantee that the running of load appliance is normal when the power supply unit output voltage be unstable.
Each electrical equipment all must be used power supply unit; and employed on the market at present power supply unit is of a great variety; when electric equipment products in use for some time; regular meeting breaks down and causes electronic component to damage; this is because the supply voltage shakiness causes; yet we can not be exactly that supply voltage goes wrong certainly, can only change part or repurchase one new.
Power supply unit has on the market developed to detect its output voltage stabilization whether testing circuit automatically at present, it is to utilize LCD directly to demonstrate the magnitude of voltage of present output voltage, for direct visual the reading of user, deal with according to the shown magnitude of voltage that goes out again in good time, but, such power supply unit, because its testing circuit is to utilize LCD, therefore the electronic component of the required cooperation of whole testing circuit is quite a lot of, relatively cause whole manufacturing cost to improve, not only cause the burden on fabricator's cost, cost is quite expensive simultaneously.
The purpose of this utility model is to provide a kind of automatic indicating device of voltage adjustment of power supply unit, not only can be when the power supply unit output voltage be unstable, reaching automatic indication informs, and the running that can guarantee the load appliance articles for use is normal, to prolong its serviceable life, more can reduce manufacturing cost effectively.
For the utility model that achieves the above object (invention) is taked following measure:
The automatic indicating device of voltage adjustment of the utility model power supply unit, mainly be by first voltage divider and second voltage divider, the supply voltage dividing potential drop of power supply output is defined as the burning voltage sensing range of power supply unit output voltage, if make power supply unit produce abnormal occurrence, and the voltage that causes its output terminal to be exported is when breaking away from this burning voltage sensing range, can end via first comparer or second comparer output low-potential signal and touch circuit passband, and make pilot lamp extinguish, therefore, not only can be when the power supply unit output voltage be unstable, reach automatic indication equally and inform that the user handles immediately, have the normal effect of the load appliance of guaranteeing articles for use running.
The utility model is taked following concrete structure:
The automatic indicating device of voltage adjustment of power supply unit of the present utility model, it is connected with power supply unit; It is characterized in that: comprise power supply, first voltage divider, second voltage divider, the 3rd voltage divider, first comparer, second comparer, touch circuit passband and pilot lamp;
First voltage divider and second voltage divider are connected with power supply respectively; First comparer and second comparer are connected with first voltage divider and second voltage divider respectively; First comparer and second comparer, again respectively with touch circuit passband and be connected; Touching circuit passband is connected with pilot lamp;
Supply voltage is exported first reference voltage and second reference voltage to the first comparer and second comparer respectively via first voltage divider and the second voltage divider dividing potential drop;
The 3rd voltage divider connects the output terminal of power supply unit, and with output one comparative voltage to the first comparer and second comparer after the output voltage dividing potential drop, first comparer and second comparer at comparative voltage less than first reference voltage during greater than second reference voltage, the output high potential signal touches circuit passband with triggering, and makes pilot lamp luminous; Greater than first reference voltage, or second comparer during less than second reference voltage, exports low-potential signal respectively to touching circuit passband at comparative voltage to first comparer, and pilot lamp is extinguished at comparative voltage.
The automatic indicating device of described voltage adjustment is characterized in that:
Described first comparer and second comparer comprise an operational amplifier respectively.
The automatic indicating device of described voltage adjustment is characterized in that:
Described the 3rd voltage divider variohm of connecting.
The automatic indicating device of described voltage adjustment is characterized in that:
Described the 3rd a voltage divider power light in parallel.
The automatic indicating device of described voltage adjustment is characterized in that:
Described pilot lamp has different colors with power light.
Be elaborated as follows in conjunction with most preferred embodiment and accompanying drawing to the automatic indicating device of voltage adjustment of power supply unit of the present utility model:
Description of drawings:
Fig. 1 is the circuit block diagram of the utility model preferred embodiment.
Fig. 2 is the circuit diagram of the utility model preferred embodiment.
As shown in Figure 1, the automatic indicating device 1 of the voltage adjustment of power supply unit of the present utility model, it is the voltage output end that is connected power supply unit 2, it comprises power supply 10, first voltage divider 11, second voltage divider 12, the 3rd voltage divider 13, first comparer 14, second comparer 15, touch circuit passband 16 and pilot lamp 17, power supply 10 is output supply voltage Vb, make supply voltage Vb simultaneously via after first voltage divider 11 and second voltage divider, 12 dividing potential drops, and export the first reference voltage Vf1 and the second reference voltage Vf2 respectively respectively to first comparer 14 and second comparer 15, the 3rd voltage divider 13 can receive the output voltage V p of the voltage output end of power supply unit 2, and will export comparative voltage Vc to the first comparer 14 and second after its dividing potential drop than device 15, and first comparer 14 and second comparer 15 in comparative voltage Vc less than the first reference voltage Vf1 during simultaneously greater than the second reference voltage Vf2, touch circuit passband 16 with regard to an exportable high potential signal with triggering, make that pilot lamp 17 is luminous; When first comparer 14 in comparative voltage Vc greater than the first reference voltage Vf1, or during less than the second reference voltage Vf2, will export low-potential signal respectively in comparative voltage Vc to touch circuit passband 16 by conducting when second comparer 15, make pilot lamp 17 close.
Cooperate shown in Figure 2, in the present embodiment, power supply 10 provides+supply voltage of 5V, and the voltage Vp that the voltage output end of power supply unit 2 is exported also with+5V is a benchmark, first voltage divider 11 is two resistor R 2 by tool fixed resistance value, R3 is in series, its tie point is the positive input terminal that is connected first comparer of being made up of operational amplifier 21 14, second voltage divider 12 is two resistor R 4 by tool fixed resistance value, R5 is in series, its tie point is connected the negative input end of second comparer of being made up of operational amplifier 22 15, the 3rd voltage divider 13 is to be in series by a resistor R 1 of tool fixed resistance value and a variohm VR, its dividing point is connected the negative input end of first comparer 14 and the positive input terminal of second comparer 15 simultaneously, and the power light 18 of a redness in parallel, in addition, touching circuit passband 16 is to cooperate two resistor R 6 by a transistor Q1, R7 forms, it touches the output terminal that logical point is connected to first comparer 14 and second comparer 15, the color of pilot lamp 17 is green, and it is connected with the transistor Q1 that touches circuit passband 16.
As Fig. 1, shown in 2, when the voltage output end of power supply unit 2 normally export+during 5V, red power light 18 is light yellows, at this moment, the comparative voltage Vc that forms by the 3rd voltage divider 13 dividing potential drops is also less than the first reference voltage Vf1 that is formed by first voltage divider, 11 dividing potential drops, simultaneously greater than the second reference voltage Vf2 that forms by second voltage divider, 12 dividing potential drops, make win comparer 14 and second comparer 15 output high potential signal triggering and conducting touch the transistor Q1 of circuit passband 16, and cause green pilot lamp 17 luminous, that is to say, when the voltage output end of power supply unit 2 is normally stablized output+5V, red power light 18 and green pilot lamp 17 are while light yellows, when the voltage output end generation unusual condition of power supply unit 2 and when exporting greater than pact+5.3V, the comparative voltage Vc that forms by the 3rd voltage divider 13 dividing potential drops, be the first reference voltage Vf1 that forms greater than first voltage divider, 11 dividing potential drops, make the comparer 14 of winning to export a low-potential signal, to touch circuit passband 16 by conducting, green pilot lamp 17 will not worked by bright transferring to, use the output voltage instability of informing the present power supply unit 2 of user, must handle immediately, and when the voltage output end generation unusual condition of power supply unit 2 and output voltage during less than+5V, the second reference voltage Vf2 that the comparative voltage Vc that is formed by the 3rd voltage divider 13 dividing potential drops forms less than second voltage divider, 12 dividing potential drops, make second comparer 15 will export a low-potential signal, to touch circuit passband 16 by conducting, green pilot lamp 17 will not worked by bright transferring to equally yet, and can reach the purpose of informing that the user should handle immediately equally, so, present embodiment not only can be when power supply unit 2 output voltage V p be unstable, reach automatic indication equally and inform that the user handles immediately, normal with the running of guaranteeing the load appliance articles for use, more because present embodiment is done the indication action by the circuit of lower-cost pilot lamp 17 and cooperation thereof, so can reach the effect that reduces manufacturing cost effectively, in addition, the variable resistor VR that is connected by the 3rd voltage divider 13, be available for users to adjust the comparative voltage Vc that 13 dividing potential drops of the 3rd voltage divider form in good time, produce the sensitivity of secretly going out to adjust pilot lamp 17, for example present embodiment is adjusted to suitable resistance value with variable resistor VR, if when using the voltage Vp that limits power supply unit 2 outputs greater than+5.3V or less than 5V, the comparative voltage Vc that 13 dividing potential drops of the 3rd voltage divider form, will thereby make win comparer 14 or second comparer 15 output low-potential signals touch circuit passband 16 by conducting, pilot lamp 1 was not worked by bright transferring to, certainly the user can adjust the resistance value of variable resistor VR voluntarily, and the unusual fluctuation scope that the voltage Vp that power supply unit 2 is exported can be detected becomes big or diminishes.
The automatic indicating device of voltage adjustment of power supply unit of the present utility model is by first voltage divider and second voltage divider, the supply voltage dividing potential drop of power supply output is defined as the burning voltage sensing range of power supply unit output voltage, when power supply unit produces abnormal occurrence, and when causing voltage that its output terminal exports to break away from the burning voltage sensing range, can touch circuit passband by conducting via first comparer or second comparer output low-potential signal, make pilot lamp not work by bright transferring to, therefore, not only can be when the power supply unit output voltage be unstable, power supply unit with detection effect can reach automatic indication equally and inform that the user handles immediately, normal with the running of guaranteeing the load appliance articles for use, to prolong its its serviceable life, and, because the utility model is to realize its deixis by the circuit of lower-cost pilot lamp and cooperation thereof, can reduce cost this device practical.
Compared with prior art, the utlity model has following effect:
In sum, owing to the voltage adjustment of power supply unit of the present utility model is indicated automatically Device is provided with divider and comparator, and the supply voltage dividing potential drop that power supply is exported is defined as power supply The burning voltage detection range of supply output voltage is if it is unusual that power supply unit is produced Phenomenon, and the voltage that causes its output to be exported is when breaking away from this burning voltage detection range, Can touch energising via first comparator or second comparator output low-potential signal cut-off conducting The road, and so that indicator lamp extinguish, therefore, not only can be in power supply unit output voltage shakiness Regularly, reach equally automatic indication and inform that the user processes immediately, can guarantee load appliance usefulness The running of product is normal, and it is increased the service life, and more can effectively reduce manufacturing cost.
Claims (4)
1. the automatic indicating device of voltage adjustment of a power supply unit, it is connected with power supply unit; It is characterized in that: comprise power supply, first voltage divider, second voltage divider, the 3rd voltage divider, first comparer, second comparer, touch circuit passband and pilot lamp;
First voltage divider and second voltage divider are connected with power supply respectively; First comparer and second comparer are connected with first voltage divider and second voltage divider respectively; First comparer and second comparer, again respectively with touch circuit passband and be connected; Touching circuit passband is connected with pilot lamp;
Supply voltage is exported first reference voltage and second reference voltage to the first comparer and second comparer respectively via first voltage divider and the second voltage divider dividing potential drop;
The 3rd voltage divider connects the output terminal of power supply unit, output one comparative voltage to the first comparer and second comparer after the output voltage dividing potential drop.
2. the automatic indicating device of voltage adjustment according to claim 1 is characterized in that:
Described first comparer and second comparer comprise an operational amplifier respectively.
3. the automatic indicating device of voltage adjustment according to claim 1 is characterized in that:
Described the 3rd voltage divider variohm of connecting.
4. the automatic indicating device of voltage adjustment according to claim 1 is characterized in that:
Described the 3rd a voltage divider power light in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241968 CN2362133Y (en) | 1998-10-30 | 1998-10-30 | Voltage regulating automatic indicator for power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241968 CN2362133Y (en) | 1998-10-30 | 1998-10-30 | Voltage regulating automatic indicator for power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2362133Y true CN2362133Y (en) | 2000-02-02 |
Family
ID=33988619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241968 Expired - Fee Related CN2362133Y (en) | 1998-10-30 | 1998-10-30 | Voltage regulating automatic indicator for power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2362133Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175904A (en) * | 2011-02-17 | 2011-09-07 | 甘肃电力科学研究院 | Measurement device for directly measuring voltage difference between two high voltage ends |
| CN102751705A (en) * | 2009-02-10 | 2012-10-24 | 威盛电子股份有限公司 | Electronic device with overvoltage protection and overvoltage protection method thereof |
| CN101419250B (en) * | 2007-10-24 | 2012-11-21 | 鸿富锦精密工业（深圳）有限公司 | Voltage test device |
| CN105676146A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Power source on-load display circuit |
| CN106059513A (en) * | 2016-05-30 | 2016-10-26 | 矽力杰半导体技术(杭州)有限公司 | DC detection protection circuit and D type amplifier applying same |
| CN111866663A (en) * | 2019-04-24 | 2020-10-30 | 原睿科技股份有限公司 | Control circuit for earplug type earphone device and earplug type earphone circuit |
-
1998
- 1998-10-30 CN CN 98241968 patent/CN2362133Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419250B (en) * | 2007-10-24 | 2012-11-21 | 鸿富锦精密工业（深圳）有限公司 | Voltage test device |
| CN102751705A (en) * | 2009-02-10 | 2012-10-24 | 威盛电子股份有限公司 | Electronic device with overvoltage protection and overvoltage protection method thereof |
| CN102175904A (en) * | 2011-02-17 | 2011-09-07 | 甘肃电力科学研究院 | Measurement device for directly measuring voltage difference between two high voltage ends |
| CN105676146A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Power source on-load display circuit |
| CN106059513A (en) * | 2016-05-30 | 2016-10-26 | 矽力杰半导体技术(杭州)有限公司 | DC detection protection circuit and D type amplifier applying same |
| CN106059513B (en) * | 2016-05-30 | 2018-11-23 | 上海芃矽半导体技术有限公司 | Direct current detection protects circuit and the class-D amplifier using it |
| CN111866663A (en) * | 2019-04-24 | 2020-10-30 | 原睿科技股份有限公司 | Control circuit for earplug type earphone device and earplug type earphone circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |