CN206805881U - 555 integrated packages produce dual power supply function presentation instrument - Google Patents
555 integrated packages produce dual power supply function presentation instrument Download PDFInfo
- Publication number
- CN206805881U CN206805881U CN201720062835.9U CN201720062835U CN206805881U CN 206805881 U CN206805881 U CN 206805881U CN 201720062835 U CN201720062835 U CN 201720062835U CN 206805881 U CN206805881 U CN 206805881U
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- capacitor
- digital voltage
- voltage table
- integrated package
- electric fan
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Abstract
It the utility model is related to a kind of 555 integrated packages and produce dual power supply function presentation instrument, belong to Technical Teaching instrument field, it is characterized in that：Circuit is by dc source E, switch S, resistance R1, integrated package I, capacitor C1, capacitor C2, capacitor C3, capacitor C4, diode D1, diode D2, digital voltage Table V1, digital voltage Table V2, digital voltage Table V3, minisize dc electric fan M1, minisize dc electric fan M2Composition, integrated package I NE555, digital voltage Table V1For demonstrating dc source E size and positive polarity, digital voltage Table V2, minisize dc electric fan M1For demonstrating the size and polarity of caused one of positive supply, digital voltage Table V3, minisize dc electric fan M2For demonstrating the size and polarity of caused one of negative supply, advantage and good effect are possessed by the utility model：Simple in construction, operation demonstration is convenient.
Description
Technical field
It the utility model is related to a kind of 555 integrated packages and produce dual power supply function presentation instrument, belong to Technical Teaching instrument
Field.
Background technology
At present, in Technical Teaching, dual power supply function presentation instrument is not produced on 555 integrated packages, student can not
The integrated package of profound understanding 555 produces dual power supply function, and this demonstration instrument can demonstrate 555 integrated packages and produce dual power supply function.
Utility model content
The purpose of this utility model is to provide a kind of 555 integrated packages and produces dual power supply function presentation instrument, and it is integrated to demonstrate 555
Block produces dual power supply function.
What the purpose of this utility model was realized in：Circuit is by dc source E, switch S, resistance R1, integrated package I, electricity
Container C1, capacitor C2, capacitor C3, capacitor C4, diode D1, diode D2, digital voltage Table V1, digital voltage Table V2, number
Word voltmeter V3, minisize dc electric fan M1, minisize dc electric fan M2Composition.It is characterized in that：Integrated package I NE555, dc source E
Size be 12 volts, the circuit can produce the dual power supply of Symmetrical, integrated package I, electric capacity in the case where single supply is powered
Device C1, capacitor C2, resistance R1Symmetrical expression multivibrator is formed, when integrated package I 3 pin output ends are high level through resistance
R1To capacitor C2Charging, the capacitor C when integrated package I 3 pin output ends are low level2Through resistance R1Electric discharge, it is seen that fill, put
Electrical circuit is identical, so the high pulse width and low-level pulse width of output pulse are essentially equal.Integrated package I 3 pin output
Square-wave pulse, when integrated package I 3 pin are high level, capacitor C4It is electrically charged；When integrated package I 3 pin are low level, electricity
Container C3It is electrically charged.Due to diode D1, diode D2It is isolating diode, capacitor C3, capacitor C4Only charge in circuit
Do not discharge, maximum charge is 12 volts, integrated package I 3 pin is grounded, in capacitor C3, capacitor C4On just obtained it is positive and negative
The dual power supply of " 12 volts ", digital voltage Table V1For demonstrating dc source E size and positive polarity, digital voltage Table V2, it is miniature straight
Flow electric fan M1For demonstrating the size and polarity of caused one of positive supply, digital voltage Table V3, minisize dc electric fan M2With
To demonstrate the size and polarity of caused one of negative supply.
Because using above-mentioned technical proposal, advantage and good effect are possessed by the utility model：It is integrated that 555 can be demonstrated
The generation dual power supply function of block, simple in construction, directly perceived accurate, operation demonstration is convenient.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is overall structure diagram of the present utility model.
E. dc sources S. switchs R in figure1Resistance I. integrated packages C1Capacitor C2Capacitor C3Capacitor
C4Capacitor D1Diode D2Diode V1Digital voltage Table V2Digital voltage Table V3Digital voltmeter M1It is miniature
Direct current electric fan M2The demonstration board of 1. base of minisize dc electric fan 2.
Embodiment：
In Fig. 1, dc source E positive pole connects switch S one end, switchs the S other end while connects digital voltage Table V1
One end, integrated package I 8 pin, integrated package I 4 pin, diode D1Positive pole, integrated package I 5 pin meet capacitor C1One end,
Dc source E negative pole connects digital voltage Table V simultaneously1The other end, capacitor C1The other end, integrated package I 1 pin, diode
D1Negative pole simultaneously meet capacitor C3Anode, digital voltage Table V2One end, minisize dc electric fan M1One end, integrated package I's
3 pin while connecting resistance R1One end, capacitor C3Negative terminal, capacitor C4Anode, digital voltage Table V2The other end, numeral
Voltmeter V3One end, minisize dc electric fan M1The other end, minisize dc electric fan M2One end, resistance R1The other end simultaneously
Meet integrated package I 2 pin, integrated package I 6 pin, capacitor C2One end, capacitor C2The other end simultaneously connect integrated package I 1 pin,
Diode D2Negative pole, diode D2Positive pole simultaneously meet capacitor C4Negative terminal, digital voltage Table V3The other end, miniature straight
Flow electric fan M2The other end.Dc source E size is 12 volts, integrated package I NE555, capacitor C1For 0.01 microfarad, electric capacity
Device C2For 2000 pico farads, capacitor C3, capacitor C4It is 22 microfarads, resistance R1For 18 kilo-ohms.Digital voltage Table V1For demonstrating
Dc source E size and positive polarity, digital voltage Table V2, minisize dc electric fan M1For demonstrating caused one of positive electricity
The size and polarity in source, digital voltage Table V3, minisize dc electric fan M2Size for one of negative supply caused by demonstrating and
Polarity.
In fig. 2, dc source E, integrated package I, switch S, minisize dc electric fan M1, minisize dc electric fan M2, numeral electricity
Press Table V1, digital voltage Table V2, digital voltage Table V3The front of demonstration board 2 is fixed on, other elements are fixed on the anti-of demonstration board 2
Face, connected with wire.
Demenstration method：ON switch S, digital voltage Table V1Display dc source E size be 12 volts and positive polarity, digital
Voltmeter V2, digital voltage Table V3Dual power supply caused by display is positive and negative 12 volts respectively, minisize dc electric fan M1, micro DC
Fan M2Show rotating.
Claims (1)
1. a kind of 555 integrated packages produce dual power supply function presentation instrument, circuit is by dc source E, switch S, resistance R1, integrated package I,
Capacitor C1, capacitor C2, capacitor C3, capacitor C4, diode D1, diode D2, digital voltage Table V1, digital voltage Table V2、
Digital voltage Table V3, minisize dc electric fan M1, minisize dc electric fan M2Composition, it is characterized in that：Dc source E positive pole meets switch S
One end, switch the S other end while connect digital voltage Table V1One end, integrated package I 8 pin, integrated package I 4 pin, diode
D1Positive pole, integrated package I 5 pin meet capacitor C1One end, dc source E negative pole connects digital voltage Table V simultaneously1It is another
End, capacitor C1The other end, integrated package I 1 pin, diode D1Negative pole simultaneously meet capacitor C3Anode, digital voltmeter
V2One end, minisize dc electric fan M1One end, integrated package I 3 pin connecting resistance R simultaneously1One end, capacitor C3Negative terminal, electricity
Container C4Anode, digital voltage Table V2The other end, digital voltage Table V3One end, minisize dc electric fan M1The other end, micro-
Type direct current electric fan M2One end, resistance R1The other end simultaneously meet integrated package I 2 pin, integrated package I 6 pin, capacitor C2One
End, capacitor C2The other end meet integrated package I 1 pin, diode D simultaneously2Negative pole, diode D2Positive pole simultaneously connect electric capacity
Device C4Negative terminal, digital voltage Table V3The other end, minisize dc electric fan M2The other end, integrated package I NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062835.9U CN206805881U (en) | 2017-01-11 | 2017-01-11 | 555 integrated packages produce dual power supply function presentation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062835.9U CN206805881U (en) | 2017-01-11 | 2017-01-11 | 555 integrated packages produce dual power supply function presentation instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206805881U true CN206805881U (en) | 2017-12-26 |
Family
ID=60729160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720062835.9U Expired - Fee Related CN206805881U (en) | 2017-01-11 | 2017-01-11 | 555 integrated packages produce dual power supply function presentation instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206805881U (en) |
-
2017
- 2017-01-11 CN CN201720062835.9U patent/CN206805881U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171226 Termination date: 20190111 |