CN203966405U - simple triode control automatic pumping teaching demonstration device - Google Patents
simple triode control automatic pumping teaching demonstration device Download PDFInfo
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- CN203966405U CN203966405U CN201420242788.2U CN201420242788U CN203966405U CN 203966405 U CN203966405 U CN 203966405U CN 201420242788 U CN201420242788 U CN 201420242788U CN 203966405 U CN203966405 U CN 203966405U
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- transistor
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Abstract
This patent relates to a kind of simple triode control automatic pumping teaching demonstration device, and it comprises electronic control circuit, water tank, water tower, probe, motor, support, base.In described electronic control circuit, be provided with 3 triodes, described 3 triodes are respectively Q1, Q2 and Q3, and its electronic control circuit one end connects water tower, and the other end connects motor and water tank successively; Described water tower is provided with three probes, one is grounded probe A, one is lower limit probe B, one is upper limit probe C, wherein upper limit probe C connects the base stage of Q1, and lower limit head B connects diode D1 negative pole, and grounded probe A connects power cathode, triode Q3 connects pumping motor, and motor is connected with water tank, water tower by water pipe.This patent forms auto-controlled water-pumping apparatus for demonstrating by 3 triodes, 2 diodes, 4 resistance, 2 capacitors, and simple in structure, stable performance, demonstrating visual, teaching are practical.
Description
Technical field
The utility model relates to a kind of water supply installation, and particularly one is utilized simple transistor auto-controlled water-pumping apparatus for demonstrating.
Background technology
Transistor is a kind of control element, and very large of the effect of transistor, does not have the invention of transistor just there is no the variation like this of advanced information society.In general high school senior middle school current techique class and Physics Classroom Teaching, while explaining the rudimentary knowledge of electronic component transistor, owing to lacking demonstration instrument, student is difficult for understanding.
Summary of the invention
For the problems referred to above, the utility model is intended to outstanding a kind of teaching demonstration device that utilizes crystal triode switch characteristic effect to realize.
The utility model is optimized electronic circuit, utilizes minimum element to make automatic pumping teaching demonstration device, because element only has 3 transistors less, adds totally 11 of other elements, and circuit is simply clear.
The simple triode control described in the utility model teaching demonstration device that draws water, it comprises electronic control circuit, water tank, water tower, probe, motor, described electronic control circuit one end connects water tower, the other end connects motor and water tank successively, described water tower is provided with three probes, one is grounded probe A, and one is lower limit probe B, and one is upper limit probe C.
Preferably, the simple triode control described in the utility model teaching demonstration device that draws water, wherein upper limit probe C connects transistor Q1, and lower limit probe B is connected with the negative pole of D1.
] preferably, the simple triode control described in the utility model teaching demonstration device that draws water, described three transistor Q1 are C9013 triode, and Q2 is C9012 triode, and Q3 is C3807 triode.
Preferably, the simple triode control described in the utility model teaching demonstration device that draws water, described triode Q3 connects pumping motor, again connecting triode Q2.
Preferably, the simple triode control described in the utility model teaching demonstration device that draws water, it is that 1/2W3.1V voltage stabilizing diode and D2 are 1N4001 general-purpose diodes that two diodes are respectively D1, and four carbon resisters are R1, R2, R3, R4, and two capacitors are C1, C2.
Preferably, described motor is 12V electric pump.
Preferably, be connected with a supply unit on described pumping motor, the output voltage of this electric supply installation is a dry cell series connection of eight joints or 12V voltage-stabilizing working power supply.
The simple triode control described in the utility model teaching demonstration device that draws water, by water supply control circuit, water tower and water tank are linked together, when the probe on water tower detect wait add water or stop adding water signal time, add water or stop adding water to water tower by water supply electronic control circuit control water tank.
Brief description of the drawings
Fig. 1 is syndeton schematic diagram of the present utility model.
1-base in figure; 2-water tank; 3-motor; 4-electronic control circuit; 5-support; 6-water tank; 7-probe.
Fig. 2 is electronic control circuit connection layout of the present utility model.
Embodiment
Select the compacting plank of 40X20X2cm to do base, do ground water tank and water tower with organic glass, power electric pump 12V difficult to understand does pumping motor, select zinc-plated thin metal to pop one's head in, control circuit transistor Q1, Q2, Q3 selects respectively C9013, C9012, C3807 type, diode D1, D2 selects respectively 1/2W3.1V voltage stabilizing diode and 1N4001 general-purpose diode, resistance R 1, R2, R3, R4 selects respectively the 200K Ω of carbon film 1/4W, 6.8K Ω, 2K Ω, 33 K Ω, capacitor C1, C2 selects the fixed capacity of 0.1 μ F/100V, use wire bonds on omnipotent wiring board the element of controller, they are separately fixed on base, doing support with fine steel rib is fixed on water tower on support and allows it higher than water tank.Fix three probes the correspondence position of their line line attachment plate at water tower.Connecting water tank with flexible rubber hose enters in container to water tower top to pump intake, pump outlet.
When use, first pour 4/5ths water of volume into water tank, connect 12V working power, now the anhydrous probe B end of water tower by R4 in high value, the cathode voltage of the diode D1 connecting is greater than 4.5V, voltage stabilizing diode punctures conducting, the positive pole that transistor Q3 base stage connects D1 by resistance R 3 obtains being greater than the operating voltage of 1V, its collector and emitter switch closure (conducting state), and Q3 transistor collector is in low spot position pumping for water pump.
The base stage of Q2 triode accesses electronegative potential conducting by R1 at the same time, make the transmitter noble potential of triode Q2 by contact resistance R2, noble potential is added to again to the negative pole end of voltage stabilizing diode D1, when water tower level collector and emitter switch closure (conducting state due to transistor Q2 during higher than probe B, auto-lock function), the diode D1 cathode voltage connecting is still greater than 4.5V, voltage stabilizing diode punctures conducting, the base stage of Q3 triode is still in being greater than the noble potential of 1V, and switch conduction water pump continues to draw water.
Water tower level continues to rise while contact with probe C, the probe C that transistor Q1 base stage connects is conducted electricity and is connected and obtains being greater than 1V noble potential with probe B by water, make Q1 collector and transmitter switch conducting, make the cathode voltage of voltage stabilizing diode D1 lower than 3V voltage, not conducting of voltage stabilizing diode, transistor Q3 base stage is without positive voltage in cut-off state, and switch disable motor stops pumping without cathode voltage.
When water tank water is popped one's head in C lower than the upper limit, the probe B that diode D1 connects connects probe B ground end by water (conduction) makes the cathode voltage of D1 lower than 3V, and Q3 triode keeps cut-off state, and motor stops pumping.Under cistern water level continues, while being reduced to probe B, power supply 12V voltage makes diode D1 negative pole be greater than 4.5V by R4, and triode Q3 again conducting motor obtains cathode voltage and draws water, and so repeatedly reaches the object of auto-controlled water-pumping.
In circuit, D2 plays the inverse peak voltage of eliminating motor coil, protection triode Q3 effect, and capacitor C1C2 plays elimination malfunction, makes circuit working stabilization.
Claims (6)
1. simple triode control automatic pumping teaching demonstration device, comprise base (1), water tank (2), motor (3) and electronic control circuit (4), support (5), water tower (6), probe (7), described electronic control circuit (4) one end connects water tower (1), the other end connects motor (3) and water tank (2) successively, it is characterized in that: described water tower (6) is provided with probe A, probe B, probe C, described probe A, probe B, probe C is connected electrically in respectively on electronic control circuit (4), in described electronic control circuit (4), be provided with three transistors, described three transistors are respectively transistor Q1, transistor Q2 and transistor Q3, also establish voltage stabilizing diode D1, wherein voltage stabilizing diode D1 positive pole connects transistor Q3 successively, motor (3) and water tank (2), described transistor Q3 connects again transistor Q2, it is that the negative pole of power supply is connected that described probe A and electronic control circuit are held (4).
2. simple triode control automatic pumping teaching demonstration device as claimed in claim 1, it is characterized in that: described probe has three, one is earth terminal probe A, one is lower limit probe B, one is upper limit probe C, wherein upper limit probe C connects transistor Q1, and lower limit probe C is connected with voltage stabilizing diode D1 negative pole.
3. simple triode control automatic pumping teaching demonstration device as claimed in claim 1, is characterized in that: described electronic control circuit is provided with 2 diode D1D2,4 resistance R 1R2R3R4,2 capacitor C1C2.
4. simple triode control automatic pumping teaching demonstration device as claimed in claim 1, is characterized in that: described motor (3) is 12V electric pump.
5. simple triode control automatic pumping teaching demonstration device as claimed in claim 1, is characterized in that: described transistor Q1 is C9013 triode, Q2 is C9012 triode, and Q3 is C3807 triode.
6. simple triode control automatic pumping teaching demonstration device as claimed in claim 3, is characterized in that: described D1 is that 1/2W3.1V voltage stabilizing diode, D2 are 1N4001 diode, and 4 resistance are carbon resister, and 2 electric capacity are ceramic disc capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242788.2U CN203966405U (en) | 2014-05-13 | 2014-05-13 | simple triode control automatic pumping teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242788.2U CN203966405U (en) | 2014-05-13 | 2014-05-13 | simple triode control automatic pumping teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966405U true CN203966405U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420242788.2U Expired - Fee Related CN203966405U (en) | 2014-05-13 | 2014-05-13 | simple triode control automatic pumping teaching demonstration device |
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| Country | Link |
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| CN (1) | CN203966405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943014A (en) * | 2014-05-13 | 2014-07-23 | 雷建设 | Simple device for triode control automatic water pumping teaching demonstration |
-
2014
- 2014-05-13 CN CN201420242788.2U patent/CN203966405U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943014A (en) * | 2014-05-13 | 2014-07-23 | 雷建设 | Simple device for triode control automatic water pumping teaching demonstration |
| CN103943014B (en) * | 2014-05-13 | 2019-05-21 | 雷建设 | Simple triode controls automatic pumping teaching demonstration device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20170513 |