CN203950450U - A kind of solution conductivity display - Google Patents
A kind of solution conductivity display Download PDFInfo
- Publication number
- CN203950450U CN203950450U CN201420235450.4U CN201420235450U CN203950450U CN 203950450 U CN203950450 U CN 203950450U CN 201420235450 U CN201420235450 U CN 201420235450U CN 203950450 U CN203950450 U CN 203950450U
- Authority
- CN
- China
- Prior art keywords
- circuit
- display
- connects
- resistance
- power supply
- Prior art date
- 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
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of solution conductivity display, comprise housing, through the detecting electrode and the light emitting diode group being connected with housing of housing outer wall through hole, the built-in amplifying circuit of described housing, load circuit, the testing circuit being connected with detecting electrode, display circuit and independently-powered system power supply; Described system power supply is connection detection circuit, load circuit and display circuit respectively; Described testing circuit tandem amplifying circuit, described amplifying circuit connects load circuit, and described load circuit connects display circuit.The solution conductivity display the utility model discloses, can be used as hand-held instrument or desk-top instrument, both can be to having specified solution to carry out the quantitative measurement of conductive capability, can carry out to different solutions again the quantitative comparison of conductive capability, and convenient experimental operation, reliability is large, contaminative is little, safe.
Description
Technical field
The utility model relates to display technology field, relates in particular to a kind of solution conductivity display.
Background technology
Electrolyte solution is one of middle school chemistry four large basic theories, the relatively conductive capability of electrolyte solution, to distinguish and learn strong and weak electrolytical experiment basis, but the experimental provision of the conductive capability of electrolyte solution is difficult for making, operation easier is large, experiment poor reliability, contaminative is large, poor stability main manifestations in the following areas:
1, device is difficult to make, and particularly those 10 carbon rods (A-battery) reach and the size requirements of solution contact area, otherwise bulb can be not bright because small electric bulb to have 500 milliamperes above could be normally luminous;
2, electricity consumption electric current is large, has obvious Electrolysis, and electrode has various a large amount of γ-ray emissions around on the one hand, makes electrode polarization serious, and conductive capability weakens, and bulb brightness is weakened, and experiment effect is undesirable; Produce on the other hand toxic gas (as chlorine), harm experimenter's health;
3, often difference is little for the bulb brightness of strong and weak electrolyte solution;
4, required voltage is high, needs one more than 30 direct supply lying prostrate, and is again to power with the alternating current of 220 volts, can only be indoor, and poor stability.
Utility model content
For the problems referred to above, the utility model provides a kind of solution conductivity display.
A kind of solution conductivity display that the utility model provides, realized by following technical characterictic:
Comprise housing, through the detecting electrode and the light emitting diode group being connected with housing of housing outer wall through hole, the built-in amplifying circuit of described housing, load circuit, the testing circuit being connected with detecting electrode, display circuit and independently-powered system power supply;
Described system power supply is connection detection circuit, load circuit and display circuit respectively; Described testing circuit tandem amplifying circuit, described amplifying circuit connects load circuit, and described load circuit connects display circuit.
Further, described amplifying circuit comprises the first amplifying circuit and the second amplifying circuit;
Described the first amplifying circuit comprises the first triode, the first resistance and the first variable resistor;
Described the second amplifying circuit comprises the second triode, the second resistance and the second adjustable resistance;
Described the first transistor collector connects load circuit, and the emitter of the first triode connects the positive pole of display circuit;
Described the second triode is coupled to the base stage of described the first triode, and the base stage of the first triode connects the first resistance, and the first resistance connects the first variable resistor; The base stage of the second triode connects the second resistance, and the second resistance connects the second adjustable resistance.
Further, described testing circuit comprises detecting electrode; The signal output part serial connection the second adjustable resistance of described detecting electrode, the second adjustable resistance connects the second resistance.
Further, described detecting electrode comprises the first test electrode and the second test electrode; Described the first test electrode is connected with solution to be measured with the second test electrode.
Further, described detecting electrode is chromium plating antenna electrode.
Further, described load circuit connecting luminous diode group, described light emitting diode group comprises multiple light emitting diode parallel connections, described light emitting diode group is arranged on housing outer wall.
Further, described display circuit connects reometer, and between tandem amplifying circuit and the negative pole of system power supply, described reometer connects insulating power supply, and the display screen on described reometer is embedded on housing.
Further, described reometer is the one in three-wire system milliampere reometer or four-wire system milliampere reometer.
Further, described system power supply comprises the 3rd resistance and the 3rd variable resistor that regulate complete machine electric current, and described the 3rd resistance and the 3rd variable resistor are serially connected on the positive pole of system power supply.
Further, described surface of shell is embedded with power switch, and described power switch is connected in series with the positive pole of insulating power supply.
Compared with prior art, the utility model only needs internal battery group, does not need other any power supplys, when detecting electrode inserts solution to be measured, system power supply is connected, very convenient and safety, when experiment, only need press power switch, insulating power supply is connected, by antenna electrode, be inserted in solution to be measured lumination of light emitting diode, display screen demonstrates the conduction numerical value of solution simultaneously, draws experiment conclusion, and the utility model operation easier is little, the reliability of experiment is high, and contaminative is little, safe.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The solution conductivity display device structure schematic diagram that Fig. 1 provides for the utility model embodiment;
The solution conductivity display circuit structure schematic diagram that Fig. 2 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obvious described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-2, a kind of solution conductivity display that the utility model provides, realized by following technical characterictic:
Comprise housing, through the detecting electrode and the light emitting diode group being connected with housing of housing outer wall through hole, the built-in amplifying circuit 101 of described housing, load circuit 102, the testing circuit 103 being connected with detecting electrode, display circuit 104 and independently-powered system power supply 105;
Described system power supply 105 connection detection circuit 103, load circuit 102 and display circuit 104 respectively; Described testing circuit 103 tandem amplifying circuits 101, described amplifying circuit 101 connects load circuit 102, and described load circuit 102 connects display circuit 104.
Further, described amplifying circuit 101 comprises the first amplifying circuit and the second amplifying circuit;
Described the first amplifying circuit comprises the first triode 2, the first resistance 3 and the first variable resistor 12;
Described the second amplifying circuit comprises the second triode 1, the second resistance 4 and the second adjustable resistance 11;
The emitter that described the first triode 2 collectors connect load circuit 102, the first triodes 2 connects the positive pole of display circuit 104;
Described the second triode 1 is coupled to the base stage of described the first triode 2, and the base stage of the first triode 2 connects the first resistance 3, the first resistance 3 and connects the first variable resistor 12; The base stage of the second triode 1 connects the second resistance 4, the second resistance 4 and connects the second adjustable resistance 11.
Further, described testing circuit comprises detecting electrode; The signal output part serial connection the second adjustable resistance of described detecting electrode, the second adjustable resistance connects the second resistance.
Further, described detecting electrode comprises the first test electrode 5 and the second test electrode 6; Described the first test electrode is connected with solution to be measured with the second test electrode.
Further, described detecting electrode is chromium plating antenna electrode.
Further, described load circuit connecting luminous diode group 7, described light emitting diode group 7 comprises multiple light emitting diode parallel connections, described light emitting diode group is arranged on housing outer wall.
Further, described display circuit connects reometer 8, and between tandem amplifying circuit and the negative pole of system power supply, described reometer connects insulating power supply 9, and the display screen on described reometer is embedded on housing.
Further, described reometer is the one in three-wire system milliampere reometer or four-wire system milliampere reometer.
Further; described system power supply comprises the 3rd resistance 13, the 3rd variable resistor 14, electric battery 10 and the protection electric capacity 15 that regulate complete machine electric current; described the 3rd resistance and the 3rd variable resistor are serially connected on the positive pole of system power supply, and protection Capacitance parallel connection is at the two ends of electric battery.
Further, described surface of shell is embedded with power switch, and described power switch is connected in series with the positive pole of insulating power supply.
The ultimate principle relating in the utility model is: two triodes are operated in the amplification region on dc load line, ensures two amplifications that triode can be brought into normal play.
In the present embodiment, select the digital display milliammeter of 0-200 milliampere to be serially connected in load and electric battery negative pole, show the milliampere number of electric current, put in detected solution composition loop by electrode.
Wherein, replace the bulb in former experiment with LED light emitting diode, due to required electric current little (only needing several milliamperes), just almost do not have Electrolysis to occur, also just there is no polarization of electrode and corrosion, solved the problem of low consumption and environmental protection,
Show the conductive current of solution with digital display type reometer, ensured reliability and the accuracy of experiment, and experiment is brought up to quantitatively by qualitative, electrolyte not only can be distinguished power, and can segment out more weak more by force.
Device instrumentation, makes teacher's lecture experiment very convenient, and student also can grouping experiment, and heavy difficult point experiment is easy to break through, and can actually improve teaching efficiency.Meanwhile, this is the instrument of a hand-held, can allow student carry out water quality generaI investigation activity, further experiment is generalized in Environmental Protection Activity and is gone, and can record the electric conductivity of various liquid and the current values of conduction.
Compared with prior art, the utility model only needs internal battery group, does not need other any power supplys, very convenient and safety, when experiment, only need press power switch, by antenna electrode, be inserted in solution to be measured lumination of light emitting diode, display screen demonstrates the conduction numerical value of solution simultaneously, draw experiment conclusion, the utility model operation easier is little, and the reliability of experiment is high, contaminative is little, safe.
Claims (10)
1. a solution conductivity display, comprise housing, through the detecting electrode and the light emitting diode group being connected with housing of housing outer wall through hole, it is characterized in that the built-in amplifying circuit of described housing, load circuit, the testing circuit being connected with detecting electrode, display circuit and independently-powered system power supply;
Described system power supply is connection detection circuit, load circuit and display circuit respectively; Described testing circuit tandem amplifying circuit, described amplifying circuit connects load circuit, and described load circuit connects display circuit.
2. solution conductivity display as claimed in claim 1, is characterized in that, described amplifying circuit comprises the first amplifying circuit and the second amplifying circuit;
Described the first amplifying circuit comprises the first triode, the first resistance and the first variable resistor;
Described the second amplifying circuit comprises the second triode, the second resistance and the second adjustable resistance;
Described the first transistor collector connects load circuit, and the emitter of the first triode connects the positive pole of display circuit;
Described the second triode is coupled to the base stage of described the first triode, and the base stage of the first triode connects the first resistance, and the first resistance connects the first variable resistor; The base stage of the second triode connects the second resistance, and the second resistance connects the second adjustable resistance.
3. solution conductivity display as claimed in claim 1 or 2, is characterized in that, described testing circuit comprises detecting electrode; The signal output part serial connection the second adjustable resistance of described detecting electrode, the second adjustable resistance connects the second resistance.
4. solution conductivity display as claimed in claim 3, is characterized in that, described detecting electrode comprises the first test electrode and the second test electrode; Described the first test electrode is connected with solution to be measured with the second test electrode.
5. solution conductivity display as claimed in claim 3, is characterized in that, described detecting electrode is chromium plating antenna electrode.
6. solution conductivity display as claimed in claim 1, is characterized in that, described load circuit connecting luminous diode group, and described light emitting diode group comprises multiple light emitting diode parallel connections, described light emitting diode group is arranged on housing outer wall.
7. solution conductivity display as claimed in claim 1, is characterized in that, described display circuit connects reometer, and between tandem amplifying circuit and the negative pole of system power supply, described reometer connects insulating power supply, and the display screen on described reometer is embedded on housing.
8. solution conductivity display as claimed in claim 7, is characterized in that, described reometer is the one in three-wire system milliampere reometer or four-wire system milliampere reometer.
9. solution conductivity display as claimed in claim 1, is characterized in that, described system power supply comprises the 3rd resistance and the 3rd variable resistor that regulate complete machine electric current, and described the 3rd resistance and the 3rd variable resistor are serially connected on the positive pole of system power supply.
10. solution conductivity display as claimed in claim 1, is characterized in that, described surface of shell is embedded with power switch, and described power switch is connected in series with the positive pole of insulating power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235450.4U CN203950450U (en) | 2014-05-09 | 2014-05-09 | A kind of solution conductivity display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235450.4U CN203950450U (en) | 2014-05-09 | 2014-05-09 | A kind of solution conductivity display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203950450U true CN203950450U (en) | 2014-11-19 |
Family
ID=51892475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420235450.4U Expired - Fee Related CN203950450U (en) | 2014-05-09 | 2014-05-09 | A kind of solution conductivity display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203950450U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652685A (en) * | 2015-11-03 | 2017-05-10 | 重庆尊来科技有限责任公司 | Stepped type conductivity teaching demonstration device for operational amplifier controlling |
| CN106683544A (en) * | 2015-11-06 | 2017-05-17 | 重庆尊来科技有限责任公司 | Discrete conductivity macroscopic display teaching demonstration instrument |
-
2014
- 2014-05-09 CN CN201420235450.4U patent/CN203950450U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652685A (en) * | 2015-11-03 | 2017-05-10 | 重庆尊来科技有限责任公司 | Stepped type conductivity teaching demonstration device for operational amplifier controlling |
| CN106683544A (en) * | 2015-11-06 | 2017-05-17 | 重庆尊来科技有限责任公司 | Discrete conductivity macroscopic display teaching demonstration instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201926735U (en) | Simple diode and triode performance tester | |
| CN203950450U (en) | A kind of solution conductivity display | |
| CN201196666Y (en) | Power supply polarity discriminator | |
| CN202167172U (en) | Substance conductivity testing pen | |
| CN201196673Y (en) | Multifunctional DC pen | |
| CN202948336U (en) | Fluid position display controller | |
| CN204228875U (en) | Path break circuit fast detector | |
| CN104181370A (en) | Load current detection circuit and detection device | |
| CN211505837U (en) | On-off detection device supporting various cables | |
| CN203688669U (en) | Contact resistance detection circuit of thin-film switch | |
| CN205506740U (en) | Test pen is heavily mixed to silicon material | |
| CN207780185U (en) | A kind of SCM Based Low Power Consumption Portable auxiliary switch signal supervisory instrument | |
| CN202494714U (en) | Novel electroscope | |
| CN207181498U (en) | A kind of power control of digital multimeter | |
| CN201126446Y (en) | Approximation test pencil | |
| CN104267308A (en) | Fast detector for access circuit and open circuit | |
| CN210295891U (en) | External buzzer of universal meter | |
| CN202794250U (en) | Multifunctional electronic testing pen | |
| CN203881838U (en) | Low-voltage detection apparatus | |
| CN204330995U (en) | A kind of accumulator electric-quantity testing circuit | |
| CN204203434U (en) | A kind of battery voltage detector with voice prompting function | |
| CN205193217U (en) | Ultracapacitor system semi -manufactured goods short -circuit detection device | |
| CN205177244U (en) | Logic circuit teaching demonstration ware | |
| CN210466368U (en) | DDR4SO-DIMM test diagnosis card | |
| CN208422065U (en) | A kind of Novel earthquake alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: CHONGQING ZHONGSHUN TEACHING INSTRUMENT CO., LTD. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: CHONGQING ZHONGSHUN TEACHING INSTRUMENT CO., LTD. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |