CN203232091U - Range automatic switching voltage meter - Google Patents
Range automatic switching voltage meter Download PDFInfo
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- CN203232091U CN203232091U CN 201320196261 CN201320196261U CN203232091U CN 203232091 U CN203232091 U CN 203232091U CN 201320196261 CN201320196261 CN 201320196261 CN 201320196261 U CN201320196261 U CN 201320196261U CN 203232091 U CN203232091 U CN 203232091U
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- resistance
- potentiometer
- amplifier
- diode
- resistor
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Abstract
The utility model discloses a range automatic switching voltage meter which comprises a range automatic switching circuit. The range automatic switching circuit comprises an integration circuit, a first diode, a second diode, a third diode, a first amplifier, a second amplifier, a third amplifier, a first potentiometer, a second potentiometer, a third potentiometer, a first transistor, a second transistor, a first light emitting diode, a second light emitting diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor. According to the utility model, automatic measurement range selection is realized, so that the workload of inspection and adjustment can be greatly reduced.
Description
Technical field
The utility model relates to a kind of voltage table, relates in particular to a kind of voltage table of automatic switching range.
Background technology
Voltage table is to adopt Digital Measuring Technique to convert to continuous amount input voltage discontinuous, discrete digitized forms and the instrument that is shown, as the most basic also more and more higher to its measuring accuracy and functional requirement with a kind of surveying instrument core in the hyundai electronics measurement, because the voltage measurement scope is wide, particularly at micro voltage, high voltage and measured signal power differ under the very big situation, should guarantee that the weak signal measurement precision takes into account the measurement range of strong signal again, the voltage table of traditional manual switch range acquires a certain degree of difficulty in measuring technique, if measurement range selection is improper, not only can cause measuring accuracy to descend even the damage instrument simultaneously.
The utility model content
The purpose of this utility model just is to provide in order to address the above problem the voltage table of the high automatic switching range of a kind of automatic selection measurement range and measuring accuracy.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of voltage table of automatic switching range, comprise the automatic switching range circuit, described automatic switching range circuit comprises integrated circuit, first diode, second diode, the 3rd diode, first amplifier, second amplifier, the 3rd amplifier, first potentiometer, second potentiometer, the 3rd potentiometer, the first transistor, transistor seconds, first light emitting diode, second light emitting diode, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, first electric capacity, second electric capacity, the 3rd electric capacity and the 4th electric capacity, first end of described first resistance is connected with the output terminal of described power supply and first end of described second resistance respectively, second end of described second resistance is connected with the negative pole of described second diode and the power input of described integrated circuit respectively, first end of described first resistance is connected with the negative pole of described first diode and first end of described first potentiometer respectively, the equal ground connection of second end of the positive pole of described first diode and described first potentiometer, the sliding end of described first potentiometer is connected with first end of described the 3rd resistance, second end of described the 3rd resistance is connected with the electrode input end of described first amplifier, the output terminal of the negative input of described the 3rd amplifier and described the 3rd amplifier all is connected with described second amplifier input terminal, described second amplifier input terminal is connected with first end of described the 5th resistance, second end of described the 5th resistance is connected with the sliding end of described second potentiometer, first end of described second potentiometer is connected with first end of described the 4th resistance, the equal ground connection of second end of second end of described second potentiometer and described the 4th resistance, the output terminal of described integrated circuit is connected with first end of described the 6th resistance and the negative pole of described the 3rd diode respectively, the positive pole of described the 3rd diode is connected with first end of described the 7th resistance and first end of described the 8th resistance respectively, second end of described the 7th resistance is connected with the base stage of described the first transistor, the collector of described the first transistor is connected with the negative pole of described first light emitting diode, the positive pole of described first light emitting diode is connected with first end of described the 9th resistance, second end of described the 8th resistance is connected with the base stage of described transistor seconds, the collector of described transistor seconds is connected with the negative pole of described second light emitting diode, the positive pole of described second light emitting diode is connected with first end of described the tenth resistance, second end of described the tenth resistance is connected back ground connection with second end of described the 9th resistance, the control end of described integrated circuit is connected with first end of described the 11 resistance, second end of described 11 resistance is connected with the electrode input end of described the 3rd amplifier, the negative input of described the 3rd amplifier is connected with first end of described the 13 resistance and first end of described the 14 resistance respectively, the second end ground connection of described the 13 resistance, second end of described the 14 resistance is connected with first end of described the 15 resistance, second end of described 15 resistance is connected with the output terminal of described the 3rd amplifier and first end of described the 3rd potentiometer respectively, second end of described potentiometer is signal output part, the discharge end of described integrated circuit is connected back ground connection with described the 12 resistance, the earth terminal of described integrated circuit is connected back ground connection with described first electric capacity respectively with described second electric capacity.
The beneficial effects of the utility model are:
The utility model selects to measure range automatically, thereby the workload that alleviates check greatly and adjust, when the measuring voltage building up transient, circuit can select nearest higher range to measure automatically, when measuring voltage descends, circuit can be connected automatically and measure than lower range, therefore, has avoided manual operation to select the problem of incorrect voltage range to be measured.
Description of drawings
Fig. 1 is the circuit diagram of automatic switching range circuit in the voltage table of the utility model automatic switching range.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the voltage table of a kind of automatic switching range of the utility model, comprise the automatic switching range circuit, described automatic switching range circuit comprises integrated circuit (IC), the first diode VD1, the second diode VD2, the 3rd diode VD3, the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, the first potentiometer RP1, the second potentiometer RP2, the 3rd potentiometer RP3, the first transistor VT1, transistor seconds VT2, first LED 1, second LED 2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 14 resistance R 14, the 15 resistance R 15, first capacitor C 1 and second capacitor C 2, first end of described first resistance R 1 is connected with the output terminal of power supply and first end of described second resistance R 2 respectively, second end of described second resistance R 2 is connected with the negative pole of the described second diode VD2 and the power input of described integrated circuit (IC) respectively, first end of described first resistance R 1 is connected with the negative pole of the described first diode VD1 and first end of the described first potentiometer RP1 respectively, the equal ground connection of second end of the positive pole of the described first diode VD1 and the described first potentiometer RP1, the sliding end of the described first potentiometer RP1 is connected with first end of described the 3rd resistance R 3, second end of described the 3rd resistance R 3 is connected with the electrode input end of the described first amplifier A1, the output terminal of the negative input of described the 3rd amplifier A3 and described the 3rd amplifier A3 all is connected with the input end of the described second amplifier A2, the input end of the described second amplifier A2 is connected with first end of described the 5th resistance R 5, second end of described the 5th resistance R 5 is connected with the sliding end of the described second potentiometer RP2, first end of the described second potentiometer RP2 is connected with first end of described the 4th resistance R 4, the equal ground connection of second end of second end of the described second potentiometer RP2 and described the 4th resistance R 4, the output terminal of described integrated circuit (IC) is connected with first end of described the 6th resistance R 6 and the negative pole of described the 3rd diode VD3 respectively, the positive pole of described the 3rd diode VD3 is connected with first end of described the 7th resistance R 7 and first end of described the 8th resistance R 8 respectively, second end of described the 7th resistance R 7 is connected with the base stage of described the first transistor VT1, the collector of described the first transistor VT1 is connected with the negative pole of described first LED 1, the positive pole of described first LED 1 is connected with first end of described the 9th resistance R 9, second end of described the 8th resistance R 8 is connected with the base stage of described transistor seconds VT2, the collector of described transistor seconds VT2 is connected with the negative pole of described second LED 2, the positive pole of described second LED 2 is connected with first end of described the tenth resistance R 10, second end of described the tenth resistance R 10 is connected back ground connection with second end of described the 9th resistance R 9, the control end of described integrated circuit (IC) is connected with first end of described the 11 resistance R 11, second end of described 11 resistance R 11 is connected with the electrode input end of described the 3rd amplifier A3, the negative input of described the 3rd amplifier A3 is connected with first end of described the 13 resistance R 13 and first end of described the 14 resistance R 14 respectively, the second end ground connection of described the 13 resistance R 13, second end of described the 14 resistance R 14 is connected with first end of described the 15 resistance R 15, second end of described 15 resistance R 15 is connected with the output terminal of described the 3rd amplifier A3 and first end of described the 3rd potentiometer RP3 respectively, second end of described the 3rd potentiometer RP3 is signal output part, the discharge end of described integrated circuit (IC) is connected back ground connection with described the 12 resistance R 12, the earth terminal of described integrated circuit (IC) is connected back ground connection with described first capacitor C 1 respectively with described second capacitor C 2.
Claims (1)
1. the voltage table of an automatic switching range, it is characterized in that: comprise the automatic switching range circuit, described automatic switching range circuit comprises integrated circuit, first diode, second diode, the 3rd diode, first amplifier, second amplifier, the 3rd amplifier, first potentiometer, second potentiometer, the 3rd potentiometer, the first transistor, transistor seconds, first light emitting diode, second light emitting diode, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, first electric capacity, second electric capacity, the 3rd electric capacity and the 4th electric capacity, first end of described first resistance is connected with the output terminal of power supply and first end of described second resistance respectively, second end of described second resistance is connected with the negative pole of described second diode and the power input of described integrated circuit respectively, first end of described first resistance is connected with the negative pole of described first diode and first end of described first potentiometer respectively, the equal ground connection of second end of the positive pole of described first diode and described first potentiometer, the sliding end of described first potentiometer is connected with first end of described the 3rd resistance, second end of described the 3rd resistance is connected with the electrode input end of described first amplifier, the output terminal of the negative input of described the 3rd amplifier and described the 3rd amplifier all is connected with described second amplifier input terminal, described second amplifier input terminal is connected with first end of described the 5th resistance, second end of described the 5th resistance is connected with the sliding end of described second potentiometer, first end of described second potentiometer is connected with first end of described the 4th resistance, the equal ground connection of second end of second end of described second potentiometer and described the 4th resistance, the output terminal of described integrated circuit is connected with first end of described the 6th resistance and the negative pole of described the 3rd diode respectively, the positive pole of described the 3rd diode is connected with first end of described the 7th resistance and first end of described the 8th resistance respectively, second end of described the 7th resistance is connected with the base stage of described the first transistor, the collector of described the first transistor is connected with the negative pole of described first light emitting diode, the positive pole of described first light emitting diode is connected with first end of described the 9th resistance, second end of described the 8th resistance is connected with the base stage of described transistor seconds, the collector of described transistor seconds is connected with the negative pole of described second light emitting diode, the positive pole of described second light emitting diode is connected with first end of described the tenth resistance, second end of described the tenth resistance is connected back ground connection with second end of described the 9th resistance, the control end of described integrated circuit is connected with first end of described the 11 resistance, second end of described 11 resistance is connected with the electrode input end of described the 3rd amplifier, the negative input of described the 3rd amplifier is connected with first end of described the 13 resistance and first end of described the 14 resistance respectively, the second end ground connection of described the 13 resistance, second end of described the 14 resistance is connected with first end of described the 15 resistance, second end of described 15 resistance is connected with the output terminal of described the 3rd amplifier and first end of described the 3rd potentiometer respectively, second end of described potentiometer is signal output part, the discharge end of described integrated circuit is connected back ground connection with described the 12 resistance, the earth terminal of described integrated circuit is connected back ground connection with described first electric capacity respectively with described second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196261 CN203232091U (en) | 2013-04-18 | 2013-04-18 | Range automatic switching voltage meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196261 CN203232091U (en) | 2013-04-18 | 2013-04-18 | Range automatic switching voltage meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232091U true CN203232091U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320196261 Expired - Fee Related CN203232091U (en) | 2013-04-18 | 2013-04-18 | Range automatic switching voltage meter |
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| Country | Link |
|---|---|
| CN (1) | CN203232091U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267233A (en) * | 2014-09-29 | 2015-01-07 | 国家电网公司 | Program control self-adaption switching circuit of meter ranges and switching control method thereof |
| CN104409120A (en) * | 2014-12-11 | 2015-03-11 | 中国核动力研究设计院 | Switching method for current linear amplification automatic range |
| CN107171658A (en) * | 2017-06-26 | 2017-09-15 | 山东派蒙机电技术有限公司 | Range switch circuit and voltage measurement method based on capacitor charge and discharge |
-
2013
- 2013-04-18 CN CN 201320196261 patent/CN203232091U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267233A (en) * | 2014-09-29 | 2015-01-07 | 国家电网公司 | Program control self-adaption switching circuit of meter ranges and switching control method thereof |
| CN104409120A (en) * | 2014-12-11 | 2015-03-11 | 中国核动力研究设计院 | Switching method for current linear amplification automatic range |
| CN107171658A (en) * | 2017-06-26 | 2017-09-15 | 山东派蒙机电技术有限公司 | Range switch circuit and voltage measurement method based on capacitor charge and discharge |
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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: 20131009 Termination date: 20140418 |