CN201045625Y - Acousto-optic prompting electroscope - Google Patents
Acousto-optic prompting electroscope Download PDFInfo
- Publication number
- CN201045625Y CN201045625Y CNU2007200228189U CN200720022818U CN201045625Y CN 201045625 Y CN201045625 Y CN 201045625Y CN U2007200228189 U CNU2007200228189 U CN U2007200228189U CN 200720022818 U CN200720022818 U CN 200720022818U CN 201045625 Y CN201045625 Y CN 201045625Y
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- CN
- China
- Prior art keywords
- acousto
- electroscope
- triode
- circuit
- optical
- 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
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Abstract
The utility model relates to an acousto-optical hinting electroscope belonging to one of teaching aids. The technical program of the acousto-optical hinting electroscope is that the acousto-optical hinting electroscope comprises a static induction circuit, wherein two probes are connected with a resistance and a triode, the two probes, the resistance and the triode are in parallel, a music generating circuit comprising an integrated block and an adjustable resistance, an acousto-optical indicating circuit comprising a triode, a trumpet and a light-emitting diode, and a power supply circuit comprising a battery and a switch. The utility model not only has simple structure and convenient use, but also removes the tedious feeling of the physics experiment application at the junior high school and verifies the charged polarity of the measured objects, thereby attracting and developing the learning interest of the students.
Description
Technical field
The utility model relates to a kind of acousto-optic hint electroscope in the teaching appliance.
Background technology
School's junior physics test at present mostly is the bimetallic strip form with electroscope, makes difficult, uninteresting, as can't to verify the object of surveying charged polarity, is unfavorable for attracting and cultivating students'interest in learning.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of acousto-optic hint electroscope that carries out acousto-optic hint simultaneously is provided.
Its technical scheme is: compose in parallel the electrostatic induction circuit after connecting resistance, triode respectively by two probes, be connected to music-integrating block, adjustable resistance composition music generating circuit, after triode, loudspeaker, light emitting diode are formed the acousto-optic indicating circuit, be connected to battery and switch feed circuit and constitute.
The utlity model has simple in structurely, easy to use, use the charged polarity that to remove dry sensation and can verify the object of surveying, help attraction and cultivation students'interest in learning in the test of school junior physics.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.A, B are probes among the figure; DC is a battery
Embodiment
Resistance R 1 linking probe A triode BG1 forms positive charge electrostatic induction circuit; Resistance R 2 linking probe B triode BG2 form the negative electrostatic charge sensor circuit; Probe A, probe B are unsettled at ordinary times, and triode BG1, BG2 end, and music integrated block IC connects the music generating circuit triggerless voltage of adjustable resistance W composition and do not work; So, by triode BG3 connect acousto-optic indicating circuit that loudspeaker L, light emitting diode D form completely without.
When needs inspected object during, because of high or low current potential will appear in electrostatic induction effect triode BG1 or BG2 near probe A or B.Noble potential BG1 conducting, electronegative potential BG2 conducting, and trigger music integrated block IC work, and loudspeaker send music, and light emitting diode D is also luminous with the music flicker; If object has acousto-optic indication explanation object positively charged when the probe A; If object does not have the acousto-optic indication when the probe A, and there is acousto-optic indication explanation object electronegative during near probe B; If object does not all have the acousto-optic indication near probe A and B, illustrate that object is not charged;
Potentiometer W is used for regulating music rhythm.
Claims (1)
1. acousto-optic hint electroscope, it is characterized in that: compose in parallel the electrostatic induction circuit after connecting resistance, triode respectively by two probes, be connected to music-integrating block, adjustable resistance composition music generating circuit, after triode, loudspeaker, light emitting diode are formed the acousto-optic indicating circuit, be connected to battery and switch feed circuit and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228189U CN201045625Y (en) | 2007-05-29 | 2007-05-29 | Acousto-optic prompting electroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228189U CN201045625Y (en) | 2007-05-29 | 2007-05-29 | Acousto-optic prompting electroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201045625Y true CN201045625Y (en) | 2008-04-09 |
Family
ID=39309093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200228189U Expired - Fee Related CN201045625Y (en) | 2007-05-29 | 2007-05-29 | Acousto-optic prompting electroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201045625Y (en) |
-
2007
- 2007-05-29 CN CNU2007200228189U patent/CN201045625Y/en not_active Expired - Fee Related
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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: 20080409 |