CN203225668U - Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal - Google Patents
Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal Download PDFInfo
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- CN203225668U CN203225668U CN 201320188017 CN201320188017U CN203225668U CN 203225668 U CN203225668 U CN 203225668U CN 201320188017 CN201320188017 CN 201320188017 CN 201320188017 U CN201320188017 U CN 201320188017U CN 203225668 U CN203225668 U CN 203225668U
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- resistance
- triode
- bridge rectifier
- electric signal
- alternating current
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Abstract
The utility model discloses a circuit for converting a sinusoidal alternating current electric signal into a sawtooth wave electric signal, comprising a bridge rectifier circuit, a diode, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode, and a second triode; wherein a first alternating current voltage input end is connected with a first end of the bridge rectifier circuit, a second alternating current voltage input end is connected with a second end of the bridge rectifier circuit, a third end of the bridge rectifier circuit is grounded, a fourth end of the bridge rectifier circuit is respectively connected with an anode of the diode and a first end of the first resistor, a cathode of the diode is respectively connected with a first end of the fourth resistor, a first end of the third resistor, and a first end of the second capacitor. The circuit for converting the sinusoidal alternating current electric signal into the sawtooth wave electric signal provided by the utility model has the advantages of simple structure, low cost, and high reliability.
Description
Technical field
The utility model relates to a kind of signal transition circuit, relates in particular to a kind of simple alternating current signal of telecommunication that becomes and is the circuit of the sawtooth waveforms signal of telecommunication.
Background technology
The voltage and current of the size and Orientation regular variation of intercropping at any time is called alternating current, claims alternating current again.Sinusoidal ac is the voltage and current that changes according to the SIN function rule in time.Because the size and Orientation of alternating current all is constantly to change in time, that is to say that the numerical value of each transient voltage (electromotive force) and electric current is all inequality, so when analyzing and calculate alternating current circuit, must indicate its positive direction.Sawtooth waveforms is one of common waveform.The waveform of standard sawtooth waveforms such as right figure linearly rise earlier, fall suddenly subsequently, rise again, fall suddenly, so repeatedly again.The frequency of the sawtooth waveforms signal of telecommunication is 2 times of sinusoidal ac signal frequency.And with it strict synchronously, be fit to very much to do the control signal of start pulse signal and the DC motor speed-regulating circuit of SCR AC pressure regulation.Therefore how the sinusoidal ac signal transition is become present problem demanding prompt solution for the sawtooth waveforms signal of telecommunication.
The utility model content
The purpose of this utility model just is that providing a kind of in order to address the above problem can be that the change simple alternating current signal of telecommunication of the sawtooth waveforms signal of telecommunication is the circuit of the sawtooth waveforms signal of telecommunication with the sinusoidal ac signal transition.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of simple alternating current signal of telecommunication that becomes is the circuit of the sawtooth waveforms signal of telecommunication, comprise bridge rectifier, diode, first electric capacity, second electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, first triode and second triode, first ac voltage input is connected with first end of described bridge rectifier, second ac voltage input is connected with second end of described bridge rectifier, the 3rd end ground connection of described bridge rectifier, the 4th end of described bridge rectifier is connected with the positive pole of described diode and first end of described first resistance respectively, the negative pole of described diode respectively with first end of described the 4th resistance, first end of described the 3rd resistance is connected with first end of described second electric capacity, second end of described first resistance is connected with first end of described second resistance and the base stage of described first triode respectively, the second end ground connection of described second resistance, the grounded emitter of described first triode, the collector electrode of described first triode is connected with second end of described the 4th resistance and the base stage of described second triode respectively, the grounded emitter of described second triode, the collector electrode of described second triode is connected with second end of described the 3rd resistance and first end of described first electric capacity respectively, first end of described first electric capacity is voltage output end, and second end of described first electric capacity and second end of described second electric capacity be ground connection respectively.
The beneficial effects of the utility model are:
The utility model is a kind of become the simple alternating current signal of telecommunication into the circuit of the sawtooth waveforms signal of telecommunication simple in structure, cost is low, reliability is high.
Description of drawings
Fig. 1 is that a kind of simple alternating current signal of telecommunication that becomes of the utility model is the circuit diagram of the circuit of the sawtooth waveforms signal of telecommunication.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of simple alternating current signal of telecommunication that becomes of the utility model is the circuit of the sawtooth waveforms signal of telecommunication, comprise bridge rectifier BR, diode D, first capacitor C 1, second capacitor C 2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first triode VT1 and the second triode VT2, first ac voltage input is connected with first end of bridge rectifier BR, second ac voltage input is connected with second end of bridge rectifier BR, the 3rd end ground connection of bridge rectifier BR, the 4th end of bridge rectifier BR is connected with the positive pole of diode D and first end of first resistance R 1 respectively, the negative pole of diode D respectively with first end of the 4th resistance R 4, first end of the 3rd resistance R 3 is connected with first end of second capacitor C 2, second end of first resistance R 1 is connected with first end of second resistance R 2 and the base stage of the first triode VT1 respectively, the second end ground connection of second resistance R 2, the grounded emitter of the first triode VT1, the collector electrode of the first triode VT1 is connected with second end of the 4th resistance R 4 and the base stage of the second triode VT2 respectively, the grounded emitter of the second triode VT2, the collector electrode of the second triode VT2 is connected with second end of the 3rd resistance R 3 and first end of first capacitor C 1 respectively, first end of first capacitor C 1 is voltage output end, and second end of second end of first capacitor C 1 and second capacitor C 2 is ground connection respectively.
Using the utility model, a kind of to become the simple alternating current signal of telecommunication as follows as the operation principle of the circuit of the sawtooth waveforms signal of telecommunication:
Circuit obtains the pulsating dc voltage that frequency is 100Hz after by bridge rectifier BR 50Hz voltage being carried out full-wave rectification, and peak value is about 1.4Ua.This crest voltage is after first resistance R 1 and second resistance R, 2 dividing potential drops, for the first triode VT1 provides base current, as long as the dividing potential drop of first resistance R 1 is greater than the threshold voltage of the first triode VT1, the first triode VT1 just is the saturation conduction state, saturation voltage drop is very little between collector electrode and emitter, the second triode VT2 can't conducting, is blocking state between its collector electrode and emitter.Meanwhile, direct voltage gives first capacitor C 1 charging through the 3rd resistance R 3, and the current potential on first capacitor C 1 just rises according to the integral characteristic curve, constitutes the trace of sawtooth waveforms thus; When Ua drops to the threshold voltage of the first triode VT1 when following, the first triode VT1 is transferred to by conducting and ending, the second triode VT2 transfers conducting to by ending, first capacitor C 1 is carried out repid discharge, make the voltage on first capacitor C 1 be down to (saturation voltage drop between the second triode VT2 collector emitter) about 0.4V rapidly by 0.631Um, this process is the flyback of sawtooth voltage.
Claims (1)
1. one kind becomes the simple alternating current signal of telecommunication and is the circuit of the sawtooth waveforms signal of telecommunication, it is characterized in that: comprise bridge rectifier, diode, first electric capacity, second electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, first triode and second triode, first ac voltage input is connected with first end of described bridge rectifier, second ac voltage input is connected with second end of described bridge rectifier, the 3rd end ground connection of described bridge rectifier, the 4th end of described bridge rectifier is connected with the positive pole of described diode and first end of described first resistance respectively, the negative pole of described diode respectively with first end of described the 4th resistance, first end of described the 3rd resistance is connected with first end of described second electric capacity, second end of described first resistance is connected with first end of described second resistance and the base stage of described first triode respectively, the second end ground connection of described second resistance, the grounded emitter of described first triode, the collector electrode of described first triode is connected with second end of described the 4th resistance and the base stage of described second triode respectively, the grounded emitter of described second triode, the collector electrode of described second triode is connected with second end of described the 3rd resistance and first end of described first electric capacity respectively, first end of described first electric capacity is voltage output end, and second end of described first electric capacity and second end of described second electric capacity be ground connection respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188017 CN203225668U (en) | 2013-04-15 | 2013-04-15 | Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188017 CN203225668U (en) | 2013-04-15 | 2013-04-15 | Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225668U true CN203225668U (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320188017 Expired - Fee Related CN203225668U (en) | 2013-04-15 | 2013-04-15 | Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal |
Country Status (1)
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| CN (1) | CN203225668U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452392A (en) * | 2016-10-14 | 2017-02-22 | 成都前锋电子仪器有限责任公司 | Sawtooth wave generating circuit |
| CN106817033A (en) * | 2017-04-05 | 2017-06-09 | 成都市宏山科技有限公司 | A kind of waveform conversion signal process circuit that can be filtered |
| CN107070248A (en) * | 2017-04-05 | 2017-08-18 | 成都市宏山科技有限公司 | A kind of process circuit changed for waveform |
-
2013
- 2013-04-15 CN CN 201320188017 patent/CN203225668U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452392A (en) * | 2016-10-14 | 2017-02-22 | 成都前锋电子仪器有限责任公司 | Sawtooth wave generating circuit |
| CN106452392B (en) * | 2016-10-14 | 2023-07-07 | 成都前锋电子仪器有限责任公司 | Sawtooth wave generating circuit |
| CN106817033A (en) * | 2017-04-05 | 2017-06-09 | 成都市宏山科技有限公司 | A kind of waveform conversion signal process circuit that can be filtered |
| CN107070248A (en) * | 2017-04-05 | 2017-08-18 | 成都市宏山科技有限公司 | A kind of process circuit changed for waveform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20140415 |