CN104753501A - Circuit for completing synchronous square-wave output in programmable mode - Google Patents
Circuit for completing synchronous square-wave output in programmable mode Download PDFInfo
- Publication number
- CN104753501A CN104753501A CN201310745359.7A CN201310745359A CN104753501A CN 104753501 A CN104753501 A CN 104753501A CN 201310745359 A CN201310745359 A CN 201310745359A CN 104753501 A CN104753501 A CN 104753501A
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- CN
- China
- Prior art keywords
- circuit
- square
- trigger
- integrated circuit
- export
- 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.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 15
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
Abstract
The invention relates to a circuit for completing synchronous square-wave output in a programmable mode. The circuit comprises a non-gate integrated circuit, a trigger and an RC circuit, wherein the output end of the non-gate integrated circuit is connected with the trigger, the RC circuit is connected to the non-gate integrated circuit, the non-gate integrated circuit adjusts the duty ratio and frequency of a square wave signal through the RC circuit after outputting the square wave signal, and the duty ratio and frequency are output to the trigger through the output end of the non-gate integrated circuit. Compared with the prior art, the circuit has the advantages of being simple and easy to operate, high in frequency and the like.
Description
Technical field
The present invention relates to a kind of square-wave synchronous output circuit, especially relate to a kind of program-controlled circuit completing square-wave synchronous and export.
Background technology
At present, need to use the synchronously anti-phase square-wave signal of two-way when carrying out circuit studies, this two-way square-wave signal must can pass through its generation of program control and stopping.When the square-wave pulse of a given fixed width, require to produce this two paths of signals within the duration of the square-wave pulse of this fixed width, two paths of signals produces at the rising edge of given square-wave pulse, terminates at trailing edge.
Realize above-mentioned functions, can have a variety of method, technology is all very ripe, but it is too complicated to there is structure, realizes the defect that cost is too high.
Summary of the invention
Object of the present invention is exactly provide a kind of simple program-controlled circuit completing square-wave synchronous and export to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
The program-controlled circuit completing square-wave synchronous and export, comprises ungated integrated circuit, trigger and RC circuit, and the output of described ungated integrated circuit connects trigger, and described RC circuit is connected on ungated integrated circuit; Export a square-wave signal after described ungated integrated circuit energising, after the duty ratio of this square-wave signal of RC circuit adjustment and frequency, export to trigger by the output of ungated integrated circuit.
Described ungated integrated circuit comprises successively by multiple not gates that pin connects.
Described not gate is provided with five.
Described RC circuit is connected to wherein between two pin of ungated integrated circuit.
Described RC circuit comprises the resistance R and electric capacity C that are connected.
Described trigger is provided with the control end for connection control voltage;
When the control end of trigger receives high level, trigger exports the anti-phase square-wave signal of two-way, and when control end is low level, trigger terminates to export.
Compared with prior art, the present invention is simple, particularly can accomplish megahertz in frequency, and general scheme can not meet this requirement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
The program-controlled circuit completing square-wave synchronous and export, comprises ungated integrated circuit 1, trigger 2 and RC circuit 3 as shown in Figure 1, and the output of described ungated integrated circuit 1 connects trigger 2, and described RC circuit 3 is connected on ungated integrated circuit 1.Described ungated integrated circuit 1 comprises successively by multiple not gates 101 that pin 102 connects, and in the present embodiment, not gate 101 is provided with five, adopts 74LS04 chip.
Described RC circuit 3 is connected to wherein between two pin of ungated integrated circuit 1, and RC circuit 3 comprises the resistance R and electric capacity C that are connected, the resistance of the optional 1k of resistance R.
Described trigger 3 adopts 74LS74 chip, which is provided with the control end for connection control voltage.
The above-mentioned program-controlled circuit working principle completing square-wave synchronous output is: export a square-wave signal AA after ungated integrated circuit 1 is energized, after the duty ratio regulating this square-wave signal by RC circuit 3 and frequency, trigger 2 is exported to by the output of ungated integrated circuit 1, the input of trigger 2 receives square-wave signal, control end receives control voltage signal, when control end is high level, trigger exports anti-phase square-wave signal AA1 and AA2 of two-way, when control end is low level, trigger terminates to export.
Claims (6)
1. the program-controlled circuit completing square-wave synchronous and export, is characterized in that, comprise ungated integrated circuit, trigger and RC circuit, and the output of described ungated integrated circuit connects trigger, and described RC circuit is connected on ungated integrated circuit; Export a square-wave signal after described ungated integrated circuit energising, after the duty ratio of this square-wave signal of RC circuit adjustment and frequency, export to trigger by the output of ungated integrated circuit.
2. a kind of program-controlled circuit completing square-wave synchronous and export according to claim 1, it is characterized in that, described ungated integrated circuit comprises successively by multiple not gates that pin connects.
3. a kind of program-controlled circuit completing square-wave synchronous and export according to claim 2, it is characterized in that, described not gate is provided with five.
4. a kind of program-controlled circuit completing square-wave synchronous and export according to claim 2, it is characterized in that, described RC circuit is connected to wherein between two pin of ungated integrated circuit.
5. a kind of program-controlled circuit completing square-wave synchronous and export according to claim 1 or 4, it is characterized in that, described RC circuit comprises the resistance R and electric capacity C that are connected.
6. a kind of program-controlled circuit completing square-wave synchronous and export according to claim 1, it is characterized in that, described trigger is provided with the control end for connection control voltage;
When the control end of trigger receives high level, trigger exports the anti-phase square-wave signal of two-way, and when control end is low level, trigger terminates to export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745359.7A CN104753501A (en) | 2013-12-30 | 2013-12-30 | Circuit for completing synchronous square-wave output in programmable mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745359.7A CN104753501A (en) | 2013-12-30 | 2013-12-30 | Circuit for completing synchronous square-wave output in programmable mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104753501A true CN104753501A (en) | 2015-07-01 |
Family
ID=53592704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310745359.7A Pending CN104753501A (en) | 2013-12-30 | 2013-12-30 | Circuit for completing synchronous square-wave output in programmable mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104753501A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446446A (en) * | 1981-07-17 | 1984-05-01 | Rockwell International Corporation | Programmable frequency synthesizer primarily for use in an atomic clock |
| JPH09261029A (en) * | 1996-03-19 | 1997-10-03 | Fuji Electric Co Ltd | Semiconductor integrated circuit |
| CN101642741A (en) * | 2009-09-01 | 2010-02-10 | 深圳和而泰智能控制股份有限公司 | Ultrasonic wave atomization circuit and device |
| CN202472324U (en) * | 2012-03-20 | 2012-10-03 | 陈秀华 | Wireless switch module |
| CN103401507A (en) * | 2013-08-08 | 2013-11-20 | 上海电缆研究所 | Square-wave pulse driving waveform modulation circuit |
| CN203708203U (en) * | 2013-12-30 | 2014-07-09 | 上海普锐马电子有限公司 | Circuit capable of carrying out program-controlled synchronous square-wave output |
-
2013
- 2013-12-30 CN CN201310745359.7A patent/CN104753501A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446446A (en) * | 1981-07-17 | 1984-05-01 | Rockwell International Corporation | Programmable frequency synthesizer primarily for use in an atomic clock |
| JPH09261029A (en) * | 1996-03-19 | 1997-10-03 | Fuji Electric Co Ltd | Semiconductor integrated circuit |
| CN101642741A (en) * | 2009-09-01 | 2010-02-10 | 深圳和而泰智能控制股份有限公司 | Ultrasonic wave atomization circuit and device |
| CN202472324U (en) * | 2012-03-20 | 2012-10-03 | 陈秀华 | Wireless switch module |
| CN103401507A (en) * | 2013-08-08 | 2013-11-20 | 上海电缆研究所 | Square-wave pulse driving waveform modulation circuit |
| CN203708203U (en) * | 2013-12-30 | 2014-07-09 | 上海普锐马电子有限公司 | Circuit capable of carrying out program-controlled synchronous square-wave output |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |