CN207504845U - Cycling switch control circuit - Google Patents
Cycling switch control circuit Download PDFInfo
- Publication number
- CN207504845U CN207504845U CN201721349355.7U CN201721349355U CN207504845U CN 207504845 U CN207504845 U CN 207504845U CN 201721349355 U CN201721349355 U CN 201721349355U CN 207504845 U CN207504845 U CN 207504845U
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- Prior art keywords
- resistor
- resistance
- unit
- comparator unit
- capacitance
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- Expired - Fee Related
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- 230000001351 cycling effect Effects 0.000 title claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 4
- 230000003796 beauty Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of cycling switch control circuits, the output terminal of its comparator unit connects first resistor and second resistance one end respectively, the in-phase input end of first resistor and comparator unit connects, the second resistance other end distinguishes connecting valve unit and the second capacitance, the inverting input connection of the switch unit other end and comparator unit；3rd resistor one end is connect with the first resistor other end, and the 3rd resistor other end is connect respectively with the inverting input of comparator unit and the 4th resistance, and first capacitance one end is connected between first resistor and 3rd resistor.The utility model is by setting comparator unit, in the inverting input connecting valve unit of comparator unit, the connection relation of first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first capacitance and the second capacitance is coordinated to control the voltage value of comparator unit in-phase input end and inverting input, so that switch unit reaches the function of toggle switch, it is simple in structure, it is of low cost.
Description
Technical field
The utility model is related to consumer electronics field, more particularly, to a kind of cycling switch control circuit.
Background technology
Conventional keys switch is to realize switching function by manual toggle, and corresponding switching circuit is all to pass through MCU
Controller realizes control, and the cost of MCU controllers is higher, is very not cost-effective from cost performance, how to maximize
The technical issues of saving the production cost of switching circuit, becoming urgent need to resolve.
Utility model content
Based on this, it is necessary to for above-mentioned background technology there are the problem of, a kind of cycling switch control circuit, structure are provided
Simply, it is of low cost, switching function can be realized well.
To achieve the above object, the utility model discloses a kind of cycling switch control circuit, including comparator unit,
Switch unit, the first capacitance, the second capacitance, first resistor, second resistance, 3rd resistor, the 4th resistance and the 5th resistance, it is described
The power end of comparator unit is electrically connected supply voltage unit, the ground terminal electrical ground of the comparator unit；
The output terminal of the comparator unit is electrically connected first resistor one end and second resistance one end, and described first
The resistance other end and the in-phase input end of comparator unit are electrically connected, and switch is electrically connected in the second resistance other end
Unit one end and second capacitance one end, the second capacitance other end ground connection, the switch unit other end and comparator unit
Inverting input be electrically connected；
Described 3rd resistor one end is electrically connected with the first resistor other end, and the 3rd resistor other end is respectively compared with
The inverting input of device unit and the 4th resistance one end are electrically connected, the 4th resistance other end ground connection, first capacitance
One end is electrically connected between first resistor and 3rd resistor, the first capacitance other end electrical ground；5th resistance
It is electrically connected between supply voltage unit and the 4th resistance.
The supply voltage unit provides a supply voltage in one of the embodiments,.
In conclusion the utility model cycling switch control circuit is by setting comparator unit, in comparator unit
Inverting input be electrically connected switch unit, cooperation first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance,
The electrical connection of first capacitance and the second capacitance controls the voltage of comparator unit in-phase input end and inverting input
Value so that switch unit reaches the function of toggle switch, eliminates the sky high cost of MCU controllers, simple in structure, at low cost
It is honest and clean.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model cycling switch control circuit.
Specific embodiment
As shown in Figure 1, the utility model cycling switch control circuit includes comparator unit U, switch unit SW, the first electricity
Hold C1, the second capacitance C2, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5, it is described
The power end of comparator unit U is electrically connected supply voltage unit 100, the ground terminal electrical ground of the comparator unit U.
First resistor R1 one end and second resistance R2 one end, institute is electrically connected in the output terminal of the comparator unit U
It states the first resistor R1 other ends and the in-phase input end of comparator unit U is electrically connected, the second resistance R2 other ends difference
It is electrically connected switch unit SW one end and second capacitance C2 one end, the second capacitance C2 other ends ground connection, the switch unit
The SW other ends and the inverting input of comparator unit U are electrically connected.
Described 3rd resistor R3 one end is electrically connected with the first resistor R1 other ends, the 3rd resistor R3 other ends difference
It is electrically connected with the inverting input of comparator unit U and the 4th resistance R4 one end, the 4th resistance R4 other ends ground connection, institute
It states first capacitance C1 one end to be electrically connected between first resistor R1 and 3rd resistor R3, the first capacitance C1 other ends are electrical
Ground connection；The 5th resistance R5 is electrically connected between 100 and the 4th resistance R4 of supply voltage unit.
The supply voltage unit 100 provides a supply voltage VCC in one of the embodiments,.
The utility model concrete operating principle is as follows, and supply voltage unit 100 starts to power, at this point, the first capacitance C1 mono-
Terminal voltage is 0V, therefore the voltage of the in-phase input end for the comparator unit U being electrically connected with first capacitance C1 one end is also 0V, and
Supply voltage unit 100, the 5th resistance R5 and the 4th resistance R4 form circuit loop, at this point, the anti-phase input of comparator unit U
The voltage at end is mono- terminal voltages of the 4th resistance R4, i.e. the voltage of the inverting input of comparator unit U is more than 0V, so comparator
The output end voltage of unit U is always held at 0V.
It is not unclamped when pressing switch unit SW, since second capacitance C2 one end and second resistance R2 are electrically connected, the second electricity
The output terminal for hindering R2 and comparator unit U is electrically connected, the anti-phase input terminal voltage of comparator unit U and second capacitance C2 one end
Voltage it is identical, i.e., the voltage of the anti-phase input terminal voltage of comparator unit U be 0V；And supply voltage unit 100, first resistor
R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 form circuit loop, at this point, comparator unit U
In-phase input end voltage for mono- terminal voltages of first resistor R1, i.e., the voltage of the in-phase input end of comparator unit U is more than 0V,
So the output end voltage of comparator unit U is consistent with the output voltage of supply voltage unit 100, the output of comparator unit U
End output high level signal so that current path is maintained at first resistor R1,3rd resistor R3 and the 4th resistance R4 directions, due to
The in-phase input end of comparator unit U is electrically connected between first resistor R1 and 3rd resistor R3, the reverse phase of comparator unit U
Input terminal is electrically connected between 3rd resistor R3 and the 4th resistance R4, therefore the homophase input terminal voltage of comparator unit U is always
Anti-phase input terminal voltage than comparator unit U is high so that the output end voltage of comparator unit U is always maintained at supply voltage
The output voltage values of unit 100.
After switch unit SW unclamps, the output end voltage of comparator unit U is supply voltage VCC, therefore the second capacitance C2
The voltage of one end is charged to supply voltage VCC；Since the output terminal of comparator unit U is high level signal, so circuit leads to
Road remains at first resistor R1,3rd resistor R3 and the 4th resistance R4 directions, therefore the homophase input terminal voltage of comparator unit U
Always the anti-phase input terminal voltage than comparator unit U is high, and the output end voltage of comparator unit U is always maintained at supply voltage
The output voltage values of unit 100.
When pressing switch unit SW again and not unclamping, since the voltage value of second capacitance C2 one end is always supply voltage
The anti-phase input terminal voltage value of VCC, i.e. comparator unit U be supply voltage VCC, the anti-phase input terminal voltage of comparator unit U
Homophase input terminal voltage more than comparator unit U, the output terminal output of comparator unit U is 0V.
After switch unit SW unclamps again, original state has been returned in this way, at this point, mono- terminal voltages of the first capacitance C1 are
0V, therefore the voltage of the in-phase input end for the comparator unit U being electrically connected with first capacitance C1 one end is also 0V, and supply voltage
Unit 100, the 5th resistance R5 and the 4th resistance R4 form circuit loop, at this point, the voltage of the inverting input of comparator unit U
For mono- terminal voltages of the 4th resistance R4, i.e. the voltage of the inverting input of comparator unit U is more than 0V, so comparator unit U
Output end voltage is always held at 0V, and so cycle repeatedly, realizes that comparator unit U output terminals high level replaces with low level
Transformation, so that the switch unit SW of key structure realizes the switching function of toggle switch；Meanwhile the utility model can be transported
In the switching circuit product in some low costs, spaces compact, switching function can be realized well, product is enable to do
To slim beauty.
In conclusion the utility model cycling switch control circuit is by setting comparator unit U, in comparator unit U
Inverting input be electrically connected switch unit SW, cooperation first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance
R4, the 5th resistance R5, the first capacitance C1 and the second capacitance C2 electrical connection control comparator unit U in-phase input ends
With the voltage value of inverting input so that switch unit SW reaches the function of toggle switch, eliminate MCU controllers it is high into
This, it is simple in structure, it is of low cost.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (2)
1. a kind of cycling switch control circuit, it is characterised in that：Including comparator unit, switch unit, the first capacitance, the second electricity
Appearance, first resistor, second resistance, 3rd resistor, the 4th resistance and the 5th resistance, the power end of the comparator unit electrically connect
Connect supply voltage unit, the ground terminal electrical ground of the comparator unit；
First resistor one end and second resistance one end, the first resistor is electrically connected in the output terminal of the comparator unit
The other end and the in-phase input end of comparator unit are electrically connected, and switch unit is electrically connected in the second resistance other end
One end and second capacitance one end, the second capacitance other end ground connection, the switch unit other end and comparator unit it is anti-
Phase input terminal is electrically connected；
Described 3rd resistor one end and the first resistor other end are electrically connected, the 3rd resistor other end respectively with comparator list
The inverting input of member and the 4th resistance one end are electrically connected, the 4th resistance other end ground connection, described first capacitance one end
It is electrically connected between first resistor and 3rd resistor, the first capacitance other end electrical ground；5th resistance is electrical
It is connected between supply voltage unit and the 4th resistance.
2. cycling switch control circuit according to claim 1, it is characterised in that：The supply voltage unit provides an electricity
Source voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721349355.7U CN207504845U (en) | 2017-10-18 | 2017-10-18 | Cycling switch control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721349355.7U CN207504845U (en) | 2017-10-18 | 2017-10-18 | Cycling switch control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504845U true CN207504845U (en) | 2018-06-15 |
Family
ID=62500991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721349355.7U Expired - Fee Related CN207504845U (en) | 2017-10-18 | 2017-10-18 | Cycling switch control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504845U (en) |
-
2017
- 2017-10-18 CN CN201721349355.7U patent/CN207504845U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180615 |