CN2146716Y - Voltage-detecting AC digital instrument - Google Patents
Voltage-detecting AC digital instrument Download PDFInfo
- Publication number
- CN2146716Y CN2146716Y CN 93200242 CN93200242U CN2146716Y CN 2146716 Y CN2146716 Y CN 2146716Y CN 93200242 CN93200242 CN 93200242 CN 93200242 U CN93200242 U CN 93200242U CN 2146716 Y CN2146716 Y CN 2146716Y
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- CN
- China
- Prior art keywords
- circuit
- point
- termination
- resistance
- output
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- 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
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model belongs to the implement and instrument field and a voltage detecting instrument in the present electronic equipment has the large system measuring error and can not visually read out the number because of adopting a pointing needle type instrument head. Therefore, the utility model provides a voltage detecting alternating current digital instrument having accurate number reading, strong vibration resistance, reliable operation and visual number reading and is composed of an isolator, a mutual locking option circuit, a divider, a signal carrying and putting conversion circuit, a rectified output circuit, a voltage changing rectified voltage stabilized power supply circuit, a negative voltage generator, an IC7107 integrated circuit and a displayer. The input end of the isolator is connected with a power supply and the voltage of the power supply goes to the signal carrying and putting conversion circuit through the divider to output the signal to the rectified output circuit after passing through the selective measurement of the mutual locking option circuit. Then the voltage of the power supply is inputted to the displayer through the treatment of the IC7107 integrated circuit.
Description
The utility model belongs to instrument field.
The voltage detecting instrument is widely used in the electronic equipment, is used to detect the numerical value and the variable quantity thereof of civil power, power piezoelectric voltage, with convenient monitoring to line voltage, power piezoelectric voltage, and the normal operation of equipment that assurance is electric.At present, the voltage detecting instrument that adopts is a pointer header, its principle of work is, utilize magnetomotive to drive the indicator action, and specify on the numeral of corresponding index dial, this numeral is promptly represented the numerical value of measured voltage, but because the skew at visual angle, tend to cause bigger reading error, and the indicator indicating positions is to change with the magnetic field of the earth is strong and weak, so the metering system error is bigger.In addition, the anti-vibration performance is poor, the phenomenon that often has the card pin accurately not indicate, and the variable quantity of voltage also is difficult for intuitively reading.
The purpose of this utility model is to propose a kind of accuracy of reading, and freedom from vibration is strong, reliable operation, and reading is voltage detecting ac digital instrument intuitively.
The utility model is by isolator 1, interlocking option switches circuit 2, divider 3, amplifier signaling conversion circuit 4, rectifying output circuit 5, transformation rectifying voltage regulator circuit 6, negative pressure generator 7, IC7107 integrated circuit 8, display 9 is formed, the input end of isolator 1 with connect power supply after the input end of transformation rectifying voltage regulator circuit 6 links to each other, the output terminal of the input termination isolator 1 of interlocking option switches circuit 2, the input end of its output termination divider 3, the output termination amplifier signaling conversion circuit 4 of divider 3, the output terminal while of transformation rectifying voltage regulator circuit 6 and the input end of negative pressure generator 7, the input end of amplifier change-over circuit 4 links to each other with the power input of IC7107 integrated circuit 8, the output terminal of the input termination amplifier change-over circuit 4 of rectifying output circuit 5, the power input of its output termination IC7107 integrated circuit 8, the power input of the output termination IC7107 integrated circuit 8 of negative pressure generator 7, the input end of the output termination display 9 of IC7107 integrated circuit 8.Principle of work: the effect of isolator 1 is that instrument and forceful electric power are isolated, the effect of interlocking option switches circuit 2 is to select to measure civil power 220V or power electricity 380V voltage, the IC7107 integrated circuit comprises large-scale integrated package 7107 and external tapping circuit thereof, and the IC7107 integrated circuit is finished signal transformation, mould/number conversion, counting, driven, shares out the work.Negative pressure generator 7 and IC7107 integrated circuit belong to prior art.After the energized, forceful electric power arrives interlocking option switches circuit 2 through isolator 1, after selecting to measure phase voltage, to divider 3, divider 3 output stationary signals are to amplifier signaling conversion circuit 4, amplifier signaling conversion circuit 4 output signals are to rectifying output circuit 5, simultaneously, forceful electric power is supplied with amplifier signaling conversion circuit 4, negative pressure generator 7 and IC7107 integrated circuit 8 through transformation rectifying voltage regulator circuit 6 output LOW voltages, negative pressure generator 7 and rectifying output circuit 5 output signals are input to display 9 to IC7107 integrated circuit 8 after signal Processing.
Advantage of the present utility model is that the metering system error is little, reading degree of accuracy height, and freedom from vibration is strong, does not have card pin phenomenon, and the variable quantity of read-out voltage directly perceived, and can realize measurement to civil power 220V or power electricity 380V in same gauge outfit.
Fig. 1 is the utility model schematic block circuit diagram
Fig. 2 is the utility model circuit theory diagrams
Embodiment:
The utility model is made up of isolator 1, interlocking option switches circuit 2, divider 3, amplifier signaling conversion circuit 4, rectifying output circuit 5, transformation rectifying voltage regulator circuit 6, negative pressure generator 7, IC7107 integrated circuit 8, display 9, and wherein isolator 1 is by resistance R
4, R
5, R
6, R
7Form, interlocking option switches circuit 2 is by K switch
1, K
2, K
3Form, with the 380V power supply contact be A, B, C, ground wire is N, works as K switch
1When being in open position, connecting C, N at 2 and can measure civil power 220V voltage, this also is of the present utility model one big characteristics, K switch
1Point 2 ' with K
2Point 2 link to each other K
2Point 2 ' with K switch
3Point 2 link to each other.Resistance R
4Be connected in K switch
1Point 2 and the C point between, resistance R
5Be connected in K switch
2Point 2 and the B point between, resistance R
6Be connected in K switch
3Point 2 and the A point between, resistance R
7Be connected in K
1, K
2, K
3Point 3 and the B point between, K switch
1Point 2 and K
3, the C point all connects the input E end of transformation rectifying voltage regulator circuit 6, the input F that N point connects transformation rectifying voltage regulator circuit 6 holds, voltage divider 3 is by variable resistor W
1, resistance R
1, R
2, R
3Form, amplifier signaling conversion circuit 4 is selected 3140 integrated package T for use
1, T
1Pin 1,4,5,8 unsettled, pin 7 is connected in the positive pole of transformation rectifying voltage regulator circuit 6 output terminals, variable resistor W
1With resistance R
1After the series connection, W
1A termination K switch
1, K
2, K
3Point 1, R
1An end pass through resistance R
2Meet T
1Pin 3, R
3An end be connected in R
1With R
2The junction, another termination K switch
1, K
2, K
3Point 1 ', rectifying output circuit 5 is by resistance R
8~R
12, capacitor C
1~C
5, diode D
1, D
2Form resistance R
8Be connected in T
1Pin 2 and 6 between, capacitor C
1One termination T
1Pin 6, another termination two utmost point official D
1Negative pole, capacitor C
2A termination T
1Pin 2, another termination capacitor C
3With resistance R
9End after the parallel connection, and capacitor C
4With resistance R
10End after the parallel connection, C
4With R
10Another terminating diode D after the parallel connection
2Negative pole, D
2Positive pole connect capacitor C
1, resistance R
11One termination IC7107 integrated circuit, 8 signal input part anodes, another terminating diode D
2Negative pole, resistance R
12One termination capacitor C
2, the signal input part negative terminal of another termination IC7107 integrated circuit 8, capacitor C
5Be connected between the positive and negative end of IC7107 integrated circuit 8 signal input parts K switch
1, K
2, K
3Point 1 ', the input end negative terminal of the signal input part negative terminal of IC7107 integrated circuit 8 and power input negative terminal and negative pressure generator 7 all meets the defeated negative pole of transformation rectifying voltage regulator circuit 6 outputs, 3140 integrated package T
1The power input anode of pin 7, IC7107 integrated circuit 8 and the input end anode of negative pressure generator 7 output head anode that all connects transformation rectifying voltage regulator circuit 6, the output termination IC7107 integrated circuit input end of negative pressure generator 7, the output termination display 9 of IC7107 integrated circuit 8, display 9 is selected light-emitting diode display for use.
Claims (2)
1, voltage detecting ac digital instrument, comprise transformation rectifying voltage regulator road 6, negative pressure generator 7, IC7017 integrated circuit 8, display 9, transformation rectifying voltage regulator circuit 6 input termination powers, output terminal output low-voltage dc voltage is supplied with negative pressure generator 7, amplifier signaling conversion circuit 4 and IC7107 integrated circuit 8, the signal input part of the output termination IC7107 integrated circuit 8 of negative pressure generator 7, the input end of the output termination display 9 of IC7107 integrated circuit 8, it is characterized in that also comprising isolator 1, the interlocking option, switch 2, divider 3, amplifier signaling conversion circuit 4, rectifying output circuit 5, the input termination power of isolator 1, the input end of output termination interlocking option switches 2, the output terminal of the input termination interlocking option switches circuit 2 of amplifier signaling conversion circuit 4, the input end of output termination rectifying output circuit 5, the signal input part of the output termination IC7107 integrated package 8 of rectifying output circuit 5.
2, according to the described voltage detecting ac digital of claim 1 instrument, it is characterized in that isolator 1 is by resistance R
4~R
7Form, interlocking option switches circuit 2 is by K switch
1, K
2, K
3Form, divider 3 is by variable resistor W
1, resistance R
1~R
3Form, amplifier signaling conversion circuit 4 is selected 3140 integrated package T for use
1, rectifying output circuit 5 is by resistance R
8~R
12, capacitor C
1~C
5, diode D
1, D
2Form K switch
1Point 2 ' with K switch
2Point 2 link to each other K
2Point 2 ' with K switch
3Point 2 link to each other resistance R
4Be connected in K
1Point 2 and the C point between, resistance R
5Be connected in K switch
2Point 2 and the B point between, resistance R
6Be connected in K
3Point 2 and the A point between, resistance R
7Be connected in K
1, K
2, K
3Point 3 and the B point between, K
1Point 2 and K
3Point 2 ' link to each other K switch
1, K
2, K
3Point 3, the input end E that the C point all connects transformation rectifying voltage regulator circuit 6, the pin 1,4,5,8 of 3140 integrated packages is unsettled, pin 7 is connected in the positive pole of transformation rectifying voltage regulator circuit 6 output terminals, variable resistor W
1With resistance R
1After the series connection, W
1A termination K switch
1, K
2, K
3Point 1, R
1An end pass through resistance R
2Meet T
1Pin 3, R
3An end be connected in R
1And R
2The junction, another termination K switch
1, K
2, K
3Point 1 ', resistance R
8Be connected in T
1Pin 2 and 6 between, capacitor C
1One termination T
1Pin 6, another terminating diode D
1Negative pole, capacitor C
2A termination T
1Pin 2, another termination capacitor C
3With resistance R
9An end and capacitor C after the parallel connection
4With resistance R
10End after the parallel connection, C
4With R
10Another terminating diode D after the parallel connection
2Negative pole, D
2Positive pole connect capacitor C
1, resistance R
11The signal input part anode of one termination IC7107 integrated circuit 8, another terminating diode D
2Negative pole, resistance R
12One termination capacitor C
2, the signal input part negative terminal of another termination IC7107 integrated circuit 8, capacitor C
5Be connected between the positive and negative end of IC7107 integrated circuit 8 signal input parts K switch
1, K
2, K
3Point 1 ' link to each other 3140 integrated package T with transformation rectifying voltage regulator circuit 6 negative pole of output end
1Pin 7 link to each other with the output head anode of transformation rectifying voltage regulator circuit 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93200242 CN2146716Y (en) | 1993-01-12 | 1993-01-12 | Voltage-detecting AC digital instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93200242 CN2146716Y (en) | 1993-01-12 | 1993-01-12 | Voltage-detecting AC digital instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2146716Y true CN2146716Y (en) | 1993-11-17 |
Family
ID=33785063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93200242 Expired - Fee Related CN2146716Y (en) | 1993-01-12 | 1993-01-12 | Voltage-detecting AC digital instrument |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2146716Y (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1323297C (en) * | 2002-03-06 | 2007-06-27 | 三垦电气株式会社 | Ac signal level detection circuit |
CN103364626B (en) * | 2012-03-26 | 2016-01-27 | 三垦电气株式会社 | AC-input voltage testing circuit |
CN106154136A (en) * | 2016-06-20 | 2016-11-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of detection tool of operational amplifier integrated circuit |
CN106154137A (en) * | 2016-06-20 | 2016-11-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of operational amplifier integrated circuit determine point detection device |
-
1993
- 1993-01-12 CN CN 93200242 patent/CN2146716Y/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1323297C (en) * | 2002-03-06 | 2007-06-27 | 三垦电气株式会社 | Ac signal level detection circuit |
CN103364626B (en) * | 2012-03-26 | 2016-01-27 | 三垦电气株式会社 | AC-input voltage testing circuit |
CN106154136A (en) * | 2016-06-20 | 2016-11-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of detection tool of operational amplifier integrated circuit |
CN106154137A (en) * | 2016-06-20 | 2016-11-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of operational amplifier integrated circuit determine point detection device |
CN106154137B (en) * | 2016-06-20 | 2018-08-17 | 东莞市联洲知识产权运营管理有限公司 | A kind of fixed point detection device of operational amplifier integrated circuit |
CN106154136B (en) * | 2016-06-20 | 2018-11-16 | 泉州市弘丰农农业技术有限公司 | A kind of detection jig of operational amplifier integrated 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 |