CN106612122A - Oscillating integrated double-transmitting device - Google Patents
Oscillating integrated double-transmitting device Download PDFInfo
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- CN106612122A CN106612122A CN201510687847.6A CN201510687847A CN106612122A CN 106612122 A CN106612122 A CN 106612122A CN 201510687847 A CN201510687847 A CN 201510687847A CN 106612122 A CN106612122 A CN 106612122A
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- 230000010355 oscillation Effects 0.000 claims abstract description 19
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- 238000005516 engineering process Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000005096 rolling process Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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Abstract
The invention provides an oscillating type integrated double-transmitting device which belongs to the technical field of electronics. The device consists of a transmitting battery, a transmitting switch, a control circuit, two electronic switching circuits, two oscillation circuits, an infrared coding circuit, a radio coding circuit, an infrared transmitter and a radio transmitter. When the transmitting switch is connected with the transmitting battery, two outputs of the control circuit respectively activate two electronic switching circuits. The first electronic switching circuit provides voltage for the first oscillation circuit, the infrared coding circuit and the infrared transmitter. The second electronic switching circuit provides voltage for the second oscillation circuit, the radio coding circuit and the radio transmitter. Two outputs of the oscillation circuits output two-digit control codes to control the coding circuits. The control circuit is in oscillation, so that two kinds of transmission do not interfere with each other. Two transmitters upgrade ordinary coding into high-security coding, which enhances the security classification and puts forward new ideas and direction for the study of a remote control technology.
Description
Technical field
Belong to electronic technology field.
Background technology
The emphasis of telecontrol engineering, always this business research, is also a kind of series of studies project.Why series of studies is become, and reason one is used in other projects of this enterprise; and using also very wide in other fields, it two is, from the angle of secrecy; existing telecontrol engineering is a kind of research in direction, and the present invention is the research of other direction, thus can have more preferable secrecy effect; it three is; the present invention is a kind of transmitting form to be lifted in order to two kinds of transmitting forms, two kinds are launched and deposited, and is not interfere with each other; so proposing the scheme of innovation, series protection is formed.
Remote-control transmitting technology, be it is a kind of occur quite variedly in the life of the masses using a very wide range of electronic technology, be such as used in automobile security and anti-theft close the door with enabling, used in high quality anti-theft door enabling with close the door it is upper etc..
Present remote control has ultrasound wave, radio wave, a few big class of infrared ray, either which kind of, all it is a kind of single remote control form, such as it is radio wave, or simply ultrasound wave, or simply infrared ray, and this single transmitting and the remote control product for receiving formation, for cracking, necessarily coexist than two kinds of transmittings simply too much, the barcode scanning that present crime one's share of expenses for a joint undertaking is formed with a kind of code reader, just it is directed to this single remote control product, crack easily, therefore media Jing is often reported, many automobiles, combination lock is all easy to stolen, this is only that the coding launched is caused, it is more single transmitting form, the barcode scanning for causing easily causes.
The features such as infrared remote controller has strong small volume, low in energy consumption, function, low cost, thus, with extremely wide.It is not only completely reliable using infra-red remote control but also can be effectively isolated electrical Interference under the environment such as high pressure, radiation, toxic gas, dust in industrial equipment.And radio wave transmission information, with long transmission distance, transinformation content is big, most of barriers can be passed through and the features such as without the construction of line, just think, if two kinds of remote controls combined, with their advantage, such combination, not only further enhance the reliability of remote control, also further increased the difficulty for cracking, because it is necessary not only for cracking radio, also need to crack infrared ray, from for barcode scanning, increase very big difficulty, so how to combine the advantage of two kinds of multi-form transmittings rising, just become a kind of thinking of scientific research personnel, also become the key subjects of this enterprise scientific research personnel.
Reach above-mentioned purpose, it is necessary to break through traditional mode of thinking, this thinking completely, the characteristics of two kinds of transmitting forms should be considered, the direction of secrecy principle, again in view of the comprehensive using effect of two methods, it is also a kind of completely great innovation so being a kind of serious challenge.
For this, the main guiding theory of the present invention is, a kind of new radiating circuit is developed, a kind of transmitting form is converted to into two kinds of transmitting forms, lift the grade of transmitting, two kinds of transmitting forms are formed and organically combined, do not interfere with each other, and use coding circuit the characteristics of one be be used alone when, also have the very high anti-ability of cracking, two is, when it and rolling code are applied in combination, to play the optimum efficiency of combination among the strong ones.Three is with relatively low cost; so as to the common coding with three kinds of states is upgraded to into a kind of highly dense encoding state; the characteristics of after present invention enforcement one is the level of confidentiality for having greatly reinforced transmitting; complex form for two kinds is changed by a kind of single transmitting, two is the grade for improving transmitting, and three is the species for extending transmitting; four is possess reliability; so this enterprise has made system innovation, the scheme of the invention of system is proposed, become the protection system of series.
The content of the invention
The main object of the present invention is that a kind of transmitting form is converted to two kinds of transmitting form, with the technical measures of innovation, lift the grade of transmitting, with a kind of oscillating circuit, two kinds of transmitting forms of control, two kinds of transmitting forms are made to form organically combination, it does not interfere with each other, using a kind of circuit common coding can be allowed to send change activity code, considerably increase the level of confidentiality of coding, the characteristics of after present invention enforcement one is the level of confidentiality for having greatly reinforced transmitting, the complex form for two kinds is changed by a kind of single transmitting, two is the grade for improving transmitting, three is the species for extending transmitting, four is possess reliability, new direction and thinking are provided to study lift-off technology.
Measure proposed by the present invention is：
1st, the double dischargers of oscillation mode integrated form are made up of emission cell, emission switch, control circuit, two electronic switching circuits, two oscillating circuits, infra-red code circuit, radio coding circuit, RF transmitter, transmitting sets.
Wherein：The positive pole of emission cell connects one end of emission switch, the zero line of the other end connection control circuit of emission switch, the two-way output of control circuit connects respectively the input of two electronic switching circuits, the output of first electronic switching circuit connects the input of first oscillating circuit, the zero line of infra-red code circuit and the live wire of RF transmitter terminate the output of first electronic switching circuit, two bit code lines of the two-way output connection infra-red code circuit of first oscillating circuit, this two bit codes line is two change activity codes of infra-red code circuit.
The output of second electronic switching circuit connects the input of second oscillating circuit, the zero line of radio coding circuit and the zero line of transmitting set all connect the output of second electronic switching circuit, two bit code lines of the two-way output connection radio coding circuit of second oscillating circuit, this two bit codes line is two change activity codes of radio coding circuit.
Control circuit is made up of 555 integrated circuits, electric capacity charging paths, electric capacity discharge paths, integrating capacitor, two-way output control circuit.
Electric capacity charging paths are formed by the adjustable resistance that charges with charge protection resistant series；Electric capacity discharge paths are formed by the adjustable resistance that discharges with discharge prevention resistant series.
The high threshold end of 555 integrated circuits connects with low valve end, electric capacity charging paths are connected between the discharge end of the power end of 555 integrated circuits and 555 integrated circuits, electric capacity discharge paths are connected between the discharge end of 555 integrated circuits and high threshold end, the indirect integrating capacitor of high threshold end and ground wire.
The output of 555 integrated circuits terminates two-way output control circuit, and all the way output control circuit is in series by output resistance with output diode, and another road output control circuit is made up of base resistance, collector resistance, output triode.
Output resistance is connected with output diode, becomes first via output, connects the input of first electronic switching circuit.
The outfan of one 555 integrated circuits of termination of base resistance, the base stage of another termination output triode of base resistance, the grounded emitter line of output triode, the collector resistance of output triode connects power end, the colelctor electrode of output triode is the output of the second tunnel, connects the input of second electronic switching circuit.
2nd, the fixed code of infra-red code circuit is different from the connection of the fixed code of radio coding circuit.
3rd, two oscillating circuits and control circuit are identical circuit.
Measure summation
Telecontrol engineering, become a primary study project of this enterprise, its reason one is, with extremely wide, its two be from secrecy angle, existing telecontrol engineering is a kind of research in direction, and the present invention is the research of other direction, thus can have more preferable secrecy effect, it three is, the change of code is increased from coding, increased the level of confidentiality degree of coding, its four be the present invention by infrared emitting technology in combination with Radio Transmission Technology, two kinds of transmittings are improved from a kind of transmitting, two kinds of transmittings are organically combined, so as to fundamentally improve the level of confidentiality of transmitting, so proposing the scheme of innovation, form protection.
The main object of the present invention is that a kind of transmitting form is converted to two kinds of transmitting form, with the technical measures of innovation, lift the grade of transmitting, with a kind of oscillating circuit, two kinds of transmitting forms of control, two kinds of transmitting forms are made to form organically combination, it does not interfere with each other, using a kind of circuit common coding can be allowed to send change activity code, considerably increase the level of confidentiality of coding, the characteristics of after present invention enforcement one is the level of confidentiality for having greatly reinforced transmitting, the complex form for two kinds is changed by a kind of single transmitting, two is the grade for improving transmitting, three is the species for extending transmitting, four is possess reliability, new direction and thinking are provided to study lift-off technology.
This measure is explained further as follows：
First, the double dischargers of oscillation mode integrated form are made up of emission cell, emission switch, control circuit, two electronic switching circuits, two oscillating circuits, infra-red code circuit, radio coding circuit, RF transmitter, transmitting sets.
Wherein：The positive pole of emission cell connects one end of emission switch, the zero line of the other end connection control circuit of emission switch, the two-way output of control circuit connects respectively the input of two electronic switching circuits, the output of first electronic switching circuit connects the input of first oscillating circuit, the zero line of infra-red code circuit and the live wire of RF transmitter terminate the output of first electronic switching circuit, two bit code lines of the two-way output connection infra-red code circuit of first oscillating circuit, this two bit codes line is two change activity codes of infra-red code circuit.
The output of second electronic switching circuit connects the input of second oscillating circuit, the zero line of radio coding circuit and the zero line of transmitting set all connect the output of second electronic switching circuit, two bit code lines of the two-way output connection radio coding circuit of second oscillating circuit, this two bit codes line is two change activity codes of radio coding circuit.
This measure formed principle be, after emission switch is connected, control circuit forms the output of oscillation form, two-way output will not be simultaneously high, also will not be simultaneously low, for controlling the Push And Release of two electronic switching circuits, form the open and close of two kinds of transmitting forms, thus two kinds of transmitting forms will not be acted on simultaneously, so can not interfere with each other.
In this two-way output when the second tunnel is output as a high position, the first via is output as low level, when second tunnel is output as low level, the first via is output as a high position, two electronic switching circuits of two-way output control are in opening and cut-off, when first electronic switching circuit is opened, infra-red code circuit starts with RF transmitter, start the oscillating circuit of control infra-red code circuit simultaneously, the change activity code for making infra-red code circuit forms variation, so when first electronic switching circuit is opened, what is formed is infrared emitting.And now second electronic switching circuit is closed, therefore radio transmitting is not acted on.
When second electronic switching circuit is opened, radio coding circuit starts with transmitting set, start the oscillating circuit of control radio coding circuit simultaneously, the change activity code for making radio coding circuit forms variation, thus when second electronic switching circuit is opened, what is formed is radio transmitting, and now first electronic switching circuit is closed, therefore infrared emitting is not acted on.
In modern technology, criminal can be by means of a kind of code reader（It is both the emitter of the coding for sending different according to certain rules）Closely heuristically crack out password.If a kind of simply transmitting form, obviously it is easy to be solved with certain rule, and the present invention uses two kinds of transmitting forms, it is more difficult one times than during a kind of transmitting form, obviously direct effect has been played to encryption, so defining the direction research of alternative High Security Level.
2nd, control circuit is in the present invention an emphasis, and two kinds of transmittings are controlled by its two outputs, just makes two kinds of transmittings in non-interfering state.The characteristics of unit is to be not only a clapp oscillator, and frequency can also be adjusted in the line.
Control circuit has in the present invention 3 points of effects, one be by first electronic switching circuit be that infra-red code circuit provides voltage with RF transmitter.Two be by second electronic switching circuit be that radio coding circuit and transmitting set provide voltage, and in whole process, it is accomplished that transmitting set does not work when RF transmitter works, the form of transmitting set work when RF transmitter is closed.Three is the regulation for realizing frequency, and in making whole emission process, the working time of two kinds of transmittings remains optimal state.
It forms the principle of vibration and frequency-adjustable as shown in Fig. 2 being made up of 555 integrated circuits, electric capacity charging paths, electric capacity discharge paths, integrating capacitor, two-way output control circuit.
Electric capacity charging paths are formed by the adjustable resistance that charges with charge protection resistant series；Electric capacity discharge paths are formed by the adjustable resistance that discharges with discharge prevention resistant series.
Electric capacity charging paths are identical with the value of electric capacity discharge paths, so the charging interval of electric capacity is consistent with discharge time, if needing the time of infrared emitting long, and the time of radio transmitting is short, its corresponding value can also be adjusted, so as to adjust the time value of control circuit two-way output.
After energization, because integrating capacitor underfill is electric, by charging of the charging paths to integrating capacitor, low valve end is low level to the power end of 555 integrated circuits, becomes the first half cycle of vibration.After the voltage of integrating capacitor is charged to the current potential of the threshold values at high threshold end, the discharge end output low level of 555 integrated circuits, integrating capacitor can only be by electric capacity discharge paths to 555 IC interior discharge tubes（The discharge end of 555 integrated circuits）Electric discharge.In this measure, charge constant is consistent with discharge time constant, so the output of 555 integrated circuits is in the high-order time consistency with low level, after two-way output control circuit, when first via output is high-order, second tunnel exports low level, the first via exports low level, second output is high-order, and time consistency, so, two electronic switching circuits also will not simultaneously be opened or simultaneously closed off, therefore, two kinds of transmittings of radio and infrared ray will not start simultaneously, so two kinds of transmittings can not interfere with each other.
Three, two electronic switching circuits are respectively and control ultrared oscillating circuit with the wireless oscillating circuit offer voltage of control, while radio coding circuit, transmitting set and infra-red code circuit, the voltage of RF transmitter is also provided by two electronic switching circuits, and two electronic switching circuits are symmetric circuit, connection is the same, parameter is consistent, so when the first via outfan of control circuit is high-order, first electronic switching circuit starts, output high pressure, infrared emitting starts, now No. second outfan of control circuit is low level, so radio transmitting is closed, when No. second outfan of control circuit is a high position, second electronic switching circuit starts, radio transmitter trigger, now the first via of control circuit is output as low level, so infrared emitting is closed.
4th, two oscillating circuits are consistent with control circuit, the two-way output of first oscillating circuit controls respectively two change activity codes of infra-red code circuit, if the fixed code of infra-red code circuit is ground connection, thus, every time infrared emitting starts, the transmitting code that infrared emitting is formed is, the ground wire of fixed code, one subcategory number of first change activity code, second becomes a subcategory number of activity code, followed by the quadratic code of first change activity code, and second becomes the quadratic code of activity code, thus, being only the once complete code signal of infrared emitting.Two subcategory number battery has fireds of complete same interim two changes activity code of oscillating circuit are that is to say, complete code signal is only.In the same manner be radio transmitting transmitting code.
So as to common regular coding is lifted for a kind of High Security Level coding.In modern technology, criminal can be by means of a kind of code reader（It is both the emitter of the coding for sending different according to certain rules）Closely heuristically crack out password.In rolling code, it is change only to manage its coding for sending, and quantity is a lot, but is first encoding when being because and launching, so yet suffering from the probability for cracking in theory.And just can crack because the corresponding reception of the present invention has to receive encode twice, so cracking by the rule of first encoding, it is obviously zero that it cracks probability, so defining the direction research of alternative High Security Level.
After enforcement, the present invention have the advantages that following prominent be：
After this measure is implemented, there is powerful vitality, one is that the confidentiality of remote control has obtained greatly being lifted, two is that circuit of the invention is simple, and highly reliable, three is that price situation has major improvement.It is mainly manifested in：
1st, it is changed into two kinds of transmitting forms from a kind of transmitting, fundamentally improves the level of confidentiality of remote control, increased the difficulty for cracking.
2nd, two kinds of transmittings are reliable, and conversion is clear and definite, only a kind of transmitting action in conversion, another kind transmitting rest, and two kinds of transmittings do not interfere with each other, so the effect for being formed is good.
3rd, the conversion of code is realized, the property of coding integrated circuit is improved, what is sent is no longer the solid size being easily cracked, but has change transsexual, with the very high anti-ability of cracking.
4th, the operational amplifier and gate circuit circuit of control change activity code are simple, easily play vibration, vibrational stabilization, it is easy to the cooperation of overall circuit.
5th, excellent performance of the present invention：The time scale of two kinds of transmittings is adjustable, so adapting to different launch times.
6th, clearly, production is easy for logic, and one is that, without valuable equipment and instrument, two is that technology is simple, and three is that circuit is simple, and component requirements used are low, it is possible to produce very high first-pass yield, four is low cost, are very suitable for minuscule-type-enterprise's production.
Description of the drawings
Fig. 1 is the functional-block diagram of the double dischargers of oscillation mode integrated form.
In figure：1st, emission cell；2nd, emission switch；3rd, control circuit；5th, first electronic switching circuit；6th, first oscillating circuit；7th, infra-red code circuit；8th, RF transmitter；9th, second electronic switching circuit；10th, second oscillating circuit；11st, radio coding circuit；12nd, transmitting set；15th, power end.
Fig. 2 is electric operation control circuit figure.
In figure：15th, power end；20th, 555 integrated circuit；21st, charging adjustable resistance；22nd, charge protection resistance；23rd, discharge prevention resistance；24th, discharge adjustable resistance；25th, integrating capacitor；26th, base resistance；27th, output triode；28th, collector resistance；29th, the second tunnel output；30th, output resistance；31st, output diode；32nd, first via output.
Specific embodiment
Fig. 1, Fig. 2 describe a kind of embodiment of the present invention jointly.
First, weld.
1st, the principle of the double dischargers of oscillation mode integrated form is as shown in Figure 1；Control circuit is welded as shown in Figure 2；Two oscillating circuits are consistent with control circuit, so also as Fig. 2 is welded, difference is that two-way output is connected on two bit code lines of coding circuit.
2nd, modulate.
1st, the time of control circuit is adjusted.
Adjustment duration of oscillation：The outfan of 555 integrated circuits, black meter pen ground connection are connected on oscillographic red bar pen.
Observation oscillatory condition, is allowed to frequency and meets the requirements.If frequency is undesirable, the resistance of electric capacity charging paths and electric capacity discharge paths is adjusted, make frequency meet the requirements.
2nd, detect whether the logic of two kinds of transmittings is correct.
The two-way output of control circuit is surveyed respectively with two voltmeters, and when the first via is output as a high position, the second tunnel is output as low level, and when the first via is output as low level, the second tunnel is output as a high position.It is such as incorrect, then it is that welding is wrong.
3rd, state is moved in the change of detection change activity code.
Two oscillating circuits are consistent with control circuit, and when oscillating circuit is adjusted, the frequency of oscillation of oscillating circuit is lower than the frequency of oscillation of control circuit one times, if the frequency of oscillation of control circuit is 5 seconds, the frequency of oscillation of oscillating circuit is 2.5 seconds.Adjustment integrating capacitor, electric capacity charging paths, electric capacity discharge paths, make frequency meet the requirements.
4th, radio frequency is adjusted with modulation working condition.
If making receptor with oscillograph, it is not joined directly together with wireless transmitter or RF transmitter, at this moment when wireless transmitter or RF transmitter is pressed, oscillograph has reaction, represents radio frequency and modulate working properly.
Make receptor with common single code reception device, now receiving portion can not receive signal.If the specific dicode signal receptor designed with inventor, dicode receptor can receive signal.
Claims (3)
1. the double dischargers of oscillation mode integrated form, is characterized in that：It is made up of emission cell, emission switch, control circuit, two electronic switching circuits, two oscillating circuits, infra-red code circuit, radio coding circuit, RF transmitter, transmitting sets；
Wherein：The positive pole of emission cell connects one end of emission switch, the zero line of the other end connection control circuit of emission switch, the two-way output of control circuit connects respectively the input of two electronic switching circuits, the output of first electronic switching circuit connects the input of first oscillating circuit, the zero line of infra-red code circuit and the live wire of RF transmitter terminate the output of first electronic switching circuit, two bit code lines of the two-way output connection infra-red code circuit of first oscillating circuit, this two bit codes line is two change activity codes of infra-red code circuit；
The output of second electronic switching circuit connects the input of second oscillating circuit, the zero line of radio coding circuit and the zero line of transmitting set all connect the output of second electronic switching circuit, two bit code lines of the two-way output connection radio coding circuit of second oscillating circuit, this two bit codes line is two change activity codes of radio coding circuit；
Control circuit is made up of 555 integrated circuits, electric capacity charging paths, electric capacity discharge paths, integrating capacitor, two-way output control circuit；
Electric capacity charging paths are formed by the adjustable resistance that charges with charge protection resistant series；Electric capacity discharge paths are formed by the adjustable resistance that discharges with discharge prevention resistant series；
The high threshold end of 555 integrated circuits connects with low valve end, electric capacity charging paths are connected between the discharge end of the power end of 555 integrated circuits and 555 integrated circuits, electric capacity discharge paths are connected between the discharge end of 555 integrated circuits and high threshold end, the indirect integrating capacitor of high threshold end and ground wire；
The output of 555 integrated circuits terminates two-way output control circuit, and all the way output control circuit is in series by output resistance with output diode, and another road output control circuit is made up of base resistance, collector resistance, output triode；
Output resistance is connected with output diode, becomes first via output, connects the input of first electronic switching circuit；
The outfan of one 555 integrated circuits of termination of base resistance, the base stage of another termination output triode of base resistance, the grounded emitter line of output triode, the collector resistance of output triode connects power end, the colelctor electrode of output triode is the output of the second tunnel, connects the input of second electronic switching circuit.
2. the double dischargers of oscillation mode integrated form according to claim 1, is characterized in that：The fixed code of infra-red code circuit is different from the connection of the fixed code of radio coding circuit.
3. the double dischargers of oscillation mode integrated form according to claim 1, is characterized in that：Two oscillating circuits are identical circuit with control circuit.
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| CN201510687847.6A CN106612122A (en) | 2015-10-21 | 2015-10-21 | Oscillating integrated double-transmitting device |
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| CN201510687847.6A CN106612122A (en) | 2015-10-21 | 2015-10-21 | Oscillating integrated double-transmitting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653776Y (en) * | 2003-05-26 | 2004-11-03 | 纽福克斯光电科技（上海）有限公司 | Integrated high inverse switch power source |
| CN101350614A (en) * | 2007-07-17 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Electronic timing switch control circuit |
| CN202421331U (en) * | 2011-09-27 | 2012-09-05 | 张海艇 | Commercial power power frequency monitoring device |
| CN202472914U (en) * | 2012-03-18 | 2012-10-03 | 宁永敭 | Single-wave and double-code, double-wave and double-code remote control transmitter |
| CN104143811A (en) * | 2014-07-15 | 2014-11-12 | 沈亚斌 | A DC Leakage Protection Circuit |
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2015
- 2015-10-21 CN CN201510687847.6A patent/CN106612122A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653776Y (en) * | 2003-05-26 | 2004-11-03 | 纽福克斯光电科技（上海）有限公司 | Integrated high inverse switch power source |
| CN101350614A (en) * | 2007-07-17 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Electronic timing switch control circuit |
| CN202421331U (en) * | 2011-09-27 | 2012-09-05 | 张海艇 | Commercial power power frequency monitoring device |
| CN202472914U (en) * | 2012-03-18 | 2012-10-03 | 宁永敭 | Single-wave and double-code, double-wave and double-code remote control transmitter |
| CN104143811A (en) * | 2014-07-15 | 2014-11-12 | 沈亚斌 | A DC Leakage Protection Circuit |
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Application publication date: 20170503 |