CN203773822U - Teaching aid-used lightning formation demonstration device - Google Patents
Teaching aid-used lightning formation demonstration device Download PDFInfo
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- CN203773822U CN203773822U CN201420172467.XU CN201420172467U CN203773822U CN 203773822 U CN203773822 U CN 203773822U CN 201420172467 U CN201420172467 U CN 201420172467U CN 203773822 U CN203773822 U CN 203773822U
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Abstract
The utility model belongs to the teaching equipment technical field and relates to a teaching aid-used lightning formation demonstration device. One end of a first resistor is connected with a collector of a first transistor and one end of a first primary coil of a primary boosting transformer B1 respectively; the other end of the first resistor is connected with the base of a second transistor; one end of a second resistor is connected with the base of the first transistor; and the other end of the second resistor is connected with the emitter of the second transistor and one end of a second primary coil of the primary boosting transformer respectively. According to the teaching aid-used lightning formation demonstration device of the utility model, initiation is performed through an oscillator at first, and then, the initiation is subjected to voltage boosting of the primary boosting transformer and the effects of various components, and finally pulse high voltage can be generated at two ends of a pulse transformer, and therefore, strong discharge sparks can be generated, so that formation of lightning can be demonstrated. The teaching aid-used lightning formation demonstration device is advantageous in obvious demonstration effect, simple operation, reasonable circuit design, simple structure, convenient operation, convenient demonstration, teaching difficulty reduction and easiness in popularization and use.
Description
Technical field:
The utility model relates to teaching equipment technical field, is specifically related to teaching aid thunder and lightning and forms apparatus for demonstrating.
Background technology:
Nowadays, in teaching textbook, introduce this spontaneous phenomenon of formation of thunder and lightning, but because of the device without its thunder and lightning formation of demonstration, how to have formed on earth thereby make student cannot experience thunder and lightning in the time of study, increased teaching difficulty.
Utility model content:
For making up in teaching, when Students ' Learning, cannot experience thunder and lightning is the deficiency how to form on earth, and the utility model provides a kind of teaching aid thunder and lightning to form apparatus for demonstrating.
Teaching aid described in the utility model forms apparatus for demonstrating with thunder and lightning, comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first transistor BG1, transistor seconds BG2, step-up transformer B1, a pulse transformer B2, the first diode D1, the second diode D2, the first capacitor C 1, the second capacitor C 2, controllable silicon SCR, switch AN; The first primary coil L1 of described the first resistance R 1, the second resistance R 2, a step-up transformer B1 and the second primary coil L2, the first transistor BG1 and transistor seconds BG2 form push-pull oscillator.
One end of described the first resistance R 1 is connected with one end of the collector of described the first transistor BG1 and the first primary coil L1 of a step-up transformer B1 respectively, the other end of described the first resistance R 1 is connected with the base stage of described transistor seconds BG2, one end of described the second resistance R 2 is connected with the base stage of described the first transistor BG1, the other end of described the second resistance R 2 is connected with one end of the emitter of described transistor seconds BG2 and the second primary coil L2 of a step-up transformer B1 respectively, between described the first transistor BG1 emitter and the collector of transistor seconds BG2, be connected with switch AN, described switch AN is connected with the tap of a step-up transformer B1 through power supply VCC.
One end of the step-up coil L3 of a described step-up transformer B1 is connected with the positive pole of the first diode D1, the negative pole of described the first diode D1 respectively with one end of the 3rd resistance R 3, the anodic bonding of controllable silicon SCR is connected with one end of the second capacitor C 2, the other end of described the 3rd resistance R 3 is connected with the positive pole of the second diode D2 and one end of the first capacitor C 1 respectively, the negative pole of described the second diode D2 is connected with the control utmost point of described controllable silicon SCR, the other end of described the second capacitor C 2 is connected with one end of the primary coil L4 of pulse transformer B2, the other end of described the first capacitor C 1, the other end of the primary coil L4 of the negative electrode of controllable silicon SCR and pulse transformer B2 is all connected with the other end of the step-up coil L3 of a described step-up transformer B1.
The beneficial effects of the utility model: teaching aid described in the utility model forms apparatus for demonstrating with thunder and lightning, form push-pull oscillator by the first primary coil L1 of the first resistance R 1, the second resistance R 2, a step-up transformer B1 and the second primary coil L2, the first transistor BG1 and transistor seconds BG2; Adopt step-up transformer B1 and pulse transformer B2 simultaneously, first play report by oscillator, boost and the effect of each components and parts through step-up transformer B1, finally produce high voltage pulse at the two ends of pulse transformer B2, thereby produce strong discharge spark, the formation of demonstration thunder and lightning, demonstration successful, simple to operate.In addition, this circuit design is reasonable, simple in structure, easy and simple to handle, and demonstration is convenient, reduces teaching difficulty, is easy to promote and use.
Brief description of the drawings:
For ease of explanation, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is circuit theory diagrams of the present utility model.
R1-the first resistance; R2-the second resistance; R3-the 3rd resistance; BG1-the first transistor; BG2-transistor seconds; Step-up transformer of B1-; B2-pulse transformer; D1-the first diode; D2-the second diode; C1-the first electric capacity; C2-the first electric capacity; SCR-controllable silicon; AN-switch.
Embodiment:
As shown in Figure 1, this embodiment is by the following technical solutions: described teaching aid forms apparatus for demonstrating with thunder and lightning, comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first transistor BG1, transistor seconds BG2, step-up transformer B1, a pulse transformer B2, the first diode D1, the second diode D2, the first capacitor C 1, the second capacitor C 2, controllable silicon SCR, switch AN; The first primary coil L1 of described the first resistance R 1, the second resistance R 2, a step-up transformer B1 and the second primary coil L2, the first transistor BG1 and transistor seconds BG2 form push-pull oscillator.
One end of described the first resistance R 1 is connected with one end of the collector of described the first transistor BG1 and the first primary coil L1 of a step-up transformer B1 respectively, the other end of described the first resistance R 1 is connected with the base stage of described transistor seconds BG2, one end of described the second resistance R 2 is connected with the base stage of described the first transistor BG1, the other end of described the second resistance R 2 is connected with one end of the emitter of described transistor seconds BG2 and the second primary coil L2 of a step-up transformer B1 respectively, between described the first transistor BG1 emitter and the collector of transistor seconds BG2, be connected with switch AN, described switch AN is connected with the tap of a step-up transformer B1 through the power supply VCC of 1.5V.
One end of the step-up coil L3 of a described step-up transformer B1 is connected with the positive pole of the first diode D1, the negative pole of described the first diode D1 respectively with one end of the 3rd resistance R 3, the anodic bonding of controllable silicon SCR is connected with one end of the second capacitor C 2, the other end of described the 3rd resistance R 3 is connected with the positive pole of the second diode D2 and one end of the first capacitor C 1 respectively, the negative pole of described the second diode D2 is connected with the control utmost point of described controllable silicon SCR, the other end of described the second capacitor C 2 is connected with one end of the primary coil L4 of pulse transformer B2, the other end of described the first capacitor C 1, the other end of the primary coil L4 of the negative electrode of controllable silicon SCR and pulse transformer B2 is all connected with the other end of the step-up coil L3 of a described step-up transformer B1.
In the present embodiment, in the time that button AN presses, oscillator plays report, 100 volts of (effective value) alternating voltages (non-sinusoidal wave) can be born in the step-up coil L3 two ends of a step-up transformer B1, after the first diode D1 rectification, charge to accumulation of energy the second capacitor C 2, charge to the first capacitor C 1 through the 3rd resistance R 3 simultaneously.In the time that in the first capacitor C 1, voltage reaches certain value, the controllable silicon SCR conducting that is triggered.Controllable silicon SCR is switched on moment, and the electric charge in the second capacitor C 2 is through controllable silicon SCR, and the primary coil L4 of pulse transformer B2 discharges rapidly, simultaneously, the two end-coil L5 at pulse transformer B2 produce more than 10,000 volts high voltage pulses, thereby produce strong discharge spark, the formation of demonstration thunder and lightning.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. teaching aid forms apparatus for demonstrating with thunder and lightning, it is characterized in that: comprise the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), the first transistor (BG1), transistor seconds (BG2), a step-up transformer (B1), pulse transformer (B2), the first diode (D1), the second diode (D2), the first electric capacity (C1), the second electric capacity (C2), controllable silicon (SCR), switch (AN); The first primary coil L1 of described the first resistance (R1), the second resistance (R2), a step-up transformer (B1) and the second primary coil L2, the first transistor (BG1) and transistor seconds (BG2) form push-pull oscillator;
One end of described the first resistance (R1) is connected with one end of the collector of described the first transistor (BG1) and the first primary coil L1 of a step-up transformer (B1) respectively, the other end of described the first resistance (R1) is connected with the base stage of described transistor seconds (BG2), one end of described the second resistance (R2) is connected with the base stage of described the first transistor (BG1), the other end of described the second resistance (R2) is connected with one end of the emitter of described transistor seconds (BG2) and the second primary coil L2 of a step-up transformer (B1) respectively, between the collector of described the first transistor (BG1) emitter and transistor seconds (BG2), be connected with switch (AN), described switch (AN) is connected with the tap of a step-up transformer (B1) through power supply (VCC),
One end of the step-up coil L3 of a described step-up transformer (B1) is connected with the positive pole of the first diode (D1), the negative pole of described the first diode (D1) respectively with one end of the 3rd resistance (R3), the anodic bonding of controllable silicon (SCR) is connected with one end of the second electric capacity (C2), the other end of described the 3rd resistance (R3) is connected with the positive pole of the second diode (D2) and one end of the first electric capacity (C1) respectively, the negative pole of described the second diode (D2) is connected with the control utmost point of described controllable silicon (SCR), the other end of described the second electric capacity (C2) is connected with one end of the primary coil L4 of pulse transformer (B2), the other end of described the first electric capacity (C1), the other end of the negative electrode of controllable silicon (SCR) and the primary coil L4 of pulse transformer (B2) is all connected with the other end of the step-up coil L3 of a described step-up transformer (B1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172467.XU CN203773822U (en) | 2014-04-02 | 2014-04-02 | Teaching aid-used lightning formation demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172467.XU CN203773822U (en) | 2014-04-02 | 2014-04-02 | Teaching aid-used lightning formation demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203773822U true CN203773822U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172467.XU Expired - Fee Related CN203773822U (en) | 2014-04-02 | 2014-04-02 | Teaching aid-used lightning formation demonstration device |
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| Country | Link |
|---|---|
| CN (1) | CN203773822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306268A (en) * | 2018-04-11 | 2018-07-20 | 王炎 | A kind of micro- auxiliary switching-in device that shoves of no-load transformer |
-
2014
- 2014-04-02 CN CN201420172467.XU patent/CN203773822U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306268A (en) * | 2018-04-11 | 2018-07-20 | 王炎 | A kind of micro- auxiliary switching-in device that shoves of no-load transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150402 |
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| EXPY | Termination of patent right or utility model |