CN209914134U - Single-live-wire bidirectional power-off dimming control system - Google Patents
Single-live-wire bidirectional power-off dimming control system Download PDFInfo
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- CN209914134U CN209914134U CN201920571904.8U CN201920571904U CN209914134U CN 209914134 U CN209914134 U CN 209914134U CN 201920571904 U CN201920571904 U CN 201920571904U CN 209914134 U CN209914134 U CN 209914134U
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Abstract
A single live wire bidirectional cut-off dimming control system comprises: a light-adjusting circuit, which is at least provided with a light-adjusting driver and two bidirectional power electronic elements connected with and controlled by the light-adjusting driver; the single-live-wire bidirectional power cut-off module is connected between the two bidirectional power electronic elements in series and is used for carrying out single-live-wire power cut-off when the dimming circuit is switched on; a high-end step-down conversion circuit connected to the light-adjusting circuit; the power supply input end of the direct current power converter is respectively connected to the single-live wire bidirectional power-cut module and the high-end voltage-reduction conversion circuit, and the power supply output end of the direct current power converter is connected to the dimming driver of the dimming circuit; borrow this, can carry out single live wire two-way dimming, control range can obviously promote by a wide margin, can intercept the electric power that enough drive Wi-Fi, 5G simultaneously again to satisfy the development demand of future thing networking and intelligent lamp control system with single fire power supply.
Description
Technical Field
The present invention relates to the field of dimming control technology, and particularly to a single-live-wire bidirectional-cut dimming control system.
Background
Conventionally, there have been various designs and patent applications for a power cut-off method using a commercial power ac of 50Hz or 60Hz, which can be conducted quickly at a certain period of time and obtain an instantaneous current from the ac power, and then rectified to supply power as a base of a system circuit.
The inventor of the present invention proposes a series of patents, such as an improved structure of M382247 series synchronous current interrupters, an inductive control switch with current interrupting function M471021, an M470212 anti-flicker lighting system and a constant current source load used by the lighting system, and finally obtains a better application effect on current interruption by effective improvement, so that the lighting system is connected in series on a power line and can perform synchronous periodic current interruption, and provides a voltage-stabilized output of a synchronous DC, so as to be used as a basic power supply and an inductor of a system circuit. Meanwhile, a battery is not required to be installed, so that the economic benefit is met, and the problems of battery pollution and N-phase line rearrangement power distribution are avoided.
The most advanced new generation of the prior art is M546634 single live wire front phase dynamic power cut-off module, the patent adopts bidirectional dynamic full-bridge power cut-off, the power cut-off can be realized for 2 times in one period under the condition of alternating current single live wire, and the power cut-off width can automatically adjust and compensate the electric power along with the increase and decrease of the load. The power supply can provide power supply with at least DC3.3V/350mA direct current. Therefore, although the lamp can be used by the most basic Wi-Fi or other communication modules and inductors with the same power consumption, the lamp cannot be further used for changing the brightness of the lamp by intelligent network dimming.
Mainly because the silicon controlled rectifier (Triac) is used as the dimming Control element in the current single-live-wire front-Phase dynamic cutoff module, as shown in fig. 6, the working mode is to use Leading-edge dimming (Leading-edge Phase Control) to Control the on-period ratio of AC alternating current to supply the lamp power, if the brightness of the lamp is further changed by network intelligent dimming, the dimming circuit needs to be added into the iot (internet of things) internet, and a higher-order wireless communication module must be built. The power required is also relatively increased, and the only way to increase power with single hot line dimming is to limit the dimming cycle. The dimming cycle is proportionally controlled to be reduced from 85% to 75%, and the remaining 25% of AC alternating current is converted into DC power, so that the power required by the higher-order wireless communication module can be provided; however, even this method can only output about 30mA, which is probably enough for general basic wireless communication module, but cannot meet the requirement of 450mA for supplying power to Wi-Fi and future 5G higher-order wireless communication module dimming circuits.
Since the Wi-Fi/5G module dimmer has certain design difficulties, it is still necessary to connect N-phase line (Neutral line) to stably supply power. Meanwhile, in the aspect of matching with light to adjust the brightness, the problem of bulb flicker must be considered, which is a technical bottleneck to be overcome urgently for the future internet of things and intelligent lamp control systems to want to supply power by using single fire.
In view of the above, the utility model discloses the inventor is lean on to seek essence and further adds with the improvement, actively develops a two-way cut off electricity dimming control system of single live wire to overcome the problem that the patent still can not satisfy future thing networking and intelligent lamp control system power supply on the design is cut off to single live wire before.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective lies in providing a two-way electric control system that cuts of single live wire mainly includes:
a light-adjusting circuit (Dimmer) which is connected in series on a single live wire, the light-adjusting circuit at least comprises a light-adjusting driver and two bidirectional power electronic elements which are connected with the light-adjusting driver and controlled by the light-adjusting driver, wherein one bidirectional power electronic element is arranged on the input end of the live wire, the other bidirectional power electronic element is arranged on the output end of the live wire, and the two bidirectional power electronic elements are used for leading the positive wave and the negative wave of alternating current to be capable of conducting and adjusting phases;
the single-live-wire bidirectional cut-off module is connected in series on the dimming circuit and arranged between the two bidirectional power electronic elements and is used for cutting off the power of a single live wire when the dimming circuit is switched on;
a High-end Buck conversion circuit (High Side Buck) connected to the light modulation circuit, one end of which is arranged at the input end of the live wire connected to the bidirectional power electronic element, and the other end of which is arranged at the output end of the live wire connected to the other bidirectional power electronic element, for providing High-voltage AC to convert into low-voltage DC; and
the direct current power converter (DC to DC converter) is characterized in that the power-taking input end is respectively connected to the single live wire bidirectional cutoff module and the high-end voltage reduction conversion circuit, the power supply output end is connected to the dimming driver of the dimming circuit, and different-voltage direct current power supply conversion is provided so as to perform single live wire bidirectional dimming.
Preferably, the dimming circuit and the single-hot bidirectional power cut module are packaged as an integrated circuit module.
Preferably, the dimming circuit, the single-hot bidirectional power cut-off module, the high-side buck converter circuit, and the DC power converter are packaged as an integrated circuit module.
Preferably, the dimming cycle proportion of the dimming circuit is controlled to be more than 15%, the two bidirectional power electronic elements are composed of two high-voltage high-power MosFETs which are arranged separately, and the dimming driver is a MosFET dimming driver.
Preferably, the dimming driver is connected to and controlled by an MCU microprocessor, the MCU microprocessor receives power supply from the dc power converter, and the dc power converter supplies at least dc dc3.3v/450mA to the output of the MCU microprocessor.
Preferably, when the dimming cycle proportion of the dimming circuit is controlled to be larger than 50%, the single live wire bidirectional power cut-off module directly cuts off the single live wire under the conduction of the dimming circuit; when the dimming period proportion is controlled to be less than 50%, the high-end buck conversion circuit directly performs buck power supply.
Preferably, a wireless communication module is additionally hung on the MCU microprocessor, and the wireless communication module is one of a Bluetooth wireless Bluetooth module, a Zigbee wireless module, a Z-wave wireless module, an RF2.4G, a 3G, a 4G and a 5G wireless module, a 433MHz wireless module and a Wi-Fi wireless network module.
Preferably, the single-live-wire bidirectional power cut-off module mainly comprises: the two synchronous series cut-off circuits are connected with an electronic change-over switch, the electronic change-over switch is internally controlled by the MCU microprocessor, one synchronous series cut-off circuit is used for cutting off the alternating current positive phase, and the other synchronous series cut-off circuit is used for cutting off the alternating current negative phase; each synchronous series-connection type cut-off circuit is provided with a synchronous rectification external power supply unit, a synchronous rectification internal power supply unit, an alternating current synchronous voltage control unit, an FET driving zero tracking control unit, a synchronous load dynamic adjustment unit and an alternating current synchronous zero tracking cut-off unit; the bidirectional dynamic full-bridge type power cut-off is carried out, the power cut-off is carried out for 2 times in one period of the alternating current under the condition of a single live wire, and the power cut-off width automatically adjusts and compensates the power along with the increase and decrease of the load.
Preferably, a lamp body or a motor is arranged at the rear end of the dimming circuit.
Preferably, the MCU microprocessor is connected to a sensor for sensing a signal for controlling the operation of the dimming circuit.
The utility model has the advantages that:
therefore, single-live wire bidirectional dimming can be performed, the control range can be obviously and greatly improved, the period proportion control reaches 15-95%, and even can reach 100% when necessary. Meanwhile, the intercepted power supply is at least direct current DC3.3v/450mA, and can provide enough power for driving Wi-Fi and 5G, so that the development requirement of the future Internet of things and an intelligent lamp control system for supplying power with single fire is met.
Drawings
Fig. 1 is a block diagram of an equivalent circuit according to the present invention;
FIG. 2 is a circuit diagram of the present invention;
fig. 3 is a block diagram of the single-live-wire bidirectional power-cut module according to the present invention;
FIG. 4 is a circuit diagram of the present invention;
fig. 5A is a waveform diagram of the single live wire dimming cycle of the present invention at 15%;
fig. 5B is a waveform diagram of the single live wire dimming cycle of the present invention at 50%;
fig. 5C is a waveform diagram of the single live wire dimming cycle of the present invention for 90%;
figure 6 is the utility model discloses the wave-form diagram of getting the electricity is reduced to single live wire developments carried to the LED lamp.
Description of the reference numerals
1 dimming circuit
11 dimming driver
12 bidirectional power electronic element
100MCU microprocessor
101 wireless communication module
102 inductor
150 lamp body
160 motor
2 single-live-wire bidirectional power-off module
20 electronic type change-over switch
21 synchronous series-type power cut-off circuit
211 synchronous rectification external power supply unit
212 synchronous rectification internal power supply unit
213 AC synchronous voltage control unit
214FET drive zero tracking control unit
215 synchronous load dynamic regulation unit
216 AC synchronous zero tracking cut-off unit
3 high-end step-down converting circuit
4 DC power supply converter
Detailed Description
For convenience, the system design purpose, circuit composition, application function characteristics and functions of the present invention are further introduced and disclosed, and the embodiments are now described in detail with reference to the accompanying drawings, as follows:
as shown in fig. 1 to 5C, the utility model relates to a two-way electric cut-off dimming control system of single live wire mainly includes: a light adjusting circuit 1, a single live wire bidirectional cut-off module 2, a high-end buck conversion circuit 3 and a direct-current power converter 4; wherein
The light-adjusting circuit 1 is connected in series on a single live wire, the light-adjusting circuit 1 is at least provided with a light-adjusting driver 11 and two bidirectional power electronic elements 12 connected with the light-adjusting driver and controlled by the light-adjusting driver, wherein one bidirectional power electronic element 12 is arranged on the input end of the live wire, the other bidirectional power electronic element 12 is arranged on the output end of the live wire, and the two bidirectional power electronic elements 12 are used for enabling the positive wave and the negative wave of alternating current to be subjected to phase conduction adjustment;
the single-live-wire bidirectional cut-off module 2 is connected in series to the dimming circuit 1 and arranged between the two bidirectional power electronic elements 12, and performs single-live cut-off when the dimming circuit 1 is switched on;
the high-end step-down converting circuit 3 is connected to the dimming circuit 1 in parallel, one end of the high-end step-down converting circuit is arranged at the input end of the live wire connected with the bidirectional power electronic element 12, and the other end of the high-end step-down converting circuit is arranged at the output end of the live wire connected with the other bidirectional power electronic element 12, so that high-voltage alternating current is converted into low-voltage direct current; and
the input end of the power supply of the direct current power supply converter 4 is respectively connected to the single live wire bidirectional cut-off module 2 and the high-end buck conversion circuit 3, and the output end of the power supply is connected to the dimming driver 11 of the dimming circuit 1, so that single live wire bidirectional dimming is performed, and direct current power supply conversion with different voltages is provided.
As a preferred embodiment of the present invention, the two bidirectional power electronic devices 12 are composed of two separate high-voltage high-power mosfets Q1 and mosfets Q2, the dimming driver 11 is a MosFET dimming driver, and the power supplied from the DC power converter 4 to the output of the dimming driver 11 is DC 18V. The dimming driver 11 is further connected to and controlled by an MCU microprocessor 100, the MCU microprocessor 100 is powered by the dc power converter 4, and the dc power converter 4 can supply dc dc3.3v/450mA to the output of the MCU microprocessor 100.
As a preferred embodiment of the present invention, as shown in fig. 5A to 5C, the present invention uses the MCU microprocessor 100 to make the VGS waveform generated by the dimming driver 11 to synchronously control the MOSFET Q1 and MOSFET Q2 driving the two bidirectional power electronic devices 12 to switch on, and modulate the VGS waveform in the curve of the sine wave, and determine the energy of the VGS waveform according to the relative position.
As a preferred embodiment of the present invention, as shown in fig. 3, a wireless communication module 101 is additionally hung on the MCU microprocessor 100, which is one of a bluetooth wireless bluetooth module, a Zigbee wireless module, a Z-wave wireless module, an rf2.4g, a 3G, a 4G, a 4.5G, a 5G wireless module, a 433MHz wireless module, and a Wi-Fi wireless network module.
As a preferred embodiment of the present invention, as shown in fig. 3, the single-live-wire bidirectional power cut-off module 2 mainly includes: two synchronous series cut-off circuits 21 connected to an electronic switch 20, the electronic switch 20 being controlled by the MCU microprocessor 100, but not limited to this, theoretically, different MCUs can be used to achieve control (not shown), so that one of the synchronous series cut-off circuits 21 is used for ac positive cut-off, and the other synchronous series cut-off circuit 21 is used for ac negative cut-off;
each of the synchronous series-wound power cut-off circuits 21 includes a synchronous rectification external power supply unit 211, a synchronous rectification internal power supply unit 212, an ac synchronous voltage control unit 213, a FET driving zero tracking control unit 214, a synchronous load dynamic adjustment unit 215, and an ac synchronous zero tracking power cut-off unit 216; the specific internal components and their operation are described in detail in the above-mentioned patent application, and are not repeated herein because they are not the key points of the present invention.
Therefore, the system can realize the practical effect of bidirectional dynamic full-bridge type power cut-off under the condition that the single-live-wire dimming circuit 1 is switched on, the power cut-off is carried out for 2 times in one period of alternating current, the power cut-off width can automatically adjust and compensate power along with the increase and decrease of a bearing load, the system can provide a stable output power supply besides the basic power supply of the system circuit, the output power supply is at least direct current DC3.3v/450mA, the use of Wi-Fi, 5G or other equivalent power-consuming communication modules 101 and an inductor 102 is met, the action of the dimming circuit 1 is controlled by sensing signals, meanwhile, a battery does not need to be installed, the economic benefit is met, and the trouble of battery pollution and N phase line (Neutral line) power distribution redrawing is avoided.
Referring to fig. 1 to 5C, in application, by means of the effective components of the dimming circuit 1, the single-live-wire bidirectional cutoff module 2, the high-end buck conversion circuit 3, and the dc power converter 4, the system can be directly installed on a single live wire for Trailing edge dimming (Trailing-edge Phase Control), so that the overall dimming power supply efficiency is significantly improved, and experiments prove that the dimming cycle proportion Control of the dimming circuit 1 of the present invention can reach 15% to 95% or more, and can reach 100% if necessary, and the effect is far better than that of the Triac Leading edge dimming (Leading-edge Phase Control) adopted in the prior art structure.
Referring to fig. 1 and 4, the working principle of the single-live-wire bidirectional-cut dimming control system of the present invention is further described as follows:
when the ac power supply is in positive Phase (+) Phase, the dimming circuit 1 draws current from the MosFET Q1 of the bidirectional power electronic device 12, passes through P2 to the mosfets Q8 and Q4 of the single-live bidirectional cutoff module 2, and passes through the MosFET Q2 of the other bidirectional power electronic device 12 to output to the dimming lamp body 150; when the ac power is in the negative Phase (-) Phase, the current is led from the dimmer lamp body 150 to the MosFET Q2 of the other bidirectional power electronic device 12, passes through P1 to the mosfets Q4 and Q8 of the single-live bidirectional cutoff module 2, passes through the MosFET Q1 of the bidirectional power electronic device 12, returns to the ac power supply, and performs bidirectional cutoff simultaneously by the mosfets Q8 and Q4 to extract the DC voltage of the DC12 v.
Meanwhile, the high-end buck conversion circuit 3 is bridged across two ends of Q1 and Q2 in the MosFET to convert the high-voltage AC voltage into a low-voltage DC12v DC voltage, and the DC12v DC voltage extracted by the aforementioned bidirectional power cut is respectively input to the DC power converter 4 to generate a DC voltage DC18v and supply the DC voltage to the dimming driver 11, and is used to generate a DC voltage dc3.3v/450mA, so as to satisfy the use of the Wi-Fi, 5G or other communication module 101 and the inductor 102 with the same power consumption.
Referring to fig. 1 and fig. 5A to 5C, the system obtains power supply by the single-fire-line bidirectional power cutoff module 2 and the high-side buck conversion circuit 3, so that the power supply can be automatically distributed and adjusted when being cut off, wherein the greatest features are as follows:
1. the whole effective combination can carry out Trailing Edge dimming (Trailing Edge Dimmer) in a curve of a sine wave, so that the adjusting efficiency reaches 15 to 95 percent or more, and can reach 100 percent if necessary.
2. When the dimming cycle is greater than 50%, the single-live-wire bidirectional cut-off module 2 directly cuts off the power of the single live wire when the dimming circuit 1 is switched on, so that the normal power supply and the stable direct current output of the system circuit are provided.
3. When the dimming period is less than 50%, the high-side buck converter circuit 3 directly performs buck power supply to provide normal power supply and stable dc output for the system circuit, which is only a simple example, but the actual automatic distribution adjustment ratio is not limited thereto.
4. According to the above 2 and 3, when the power is cut off, the load of the dimming lamp body 150 is continuously in the power-on state and is not disconnected, so that the low-load lamp can be effectively turned on and can be cut off, and meanwhile, the condition that the LED lamp or the power-saving lamp flickers can be avoided.
This system effectively utilizes the two-way power supply of cutting off of single live wire module 2 and the complementary power supply of getting of high-end step-down converting circuit 3, except the normal power consumption of sustainable supply system, can also export and reach the stable power supply of DC3.3v/450mA at least, give MCU microprocessor 100 and Wi-Fi, 5G or other equal power consumptive communication module 101 and inductor 102 use, overcome the difficult problem of traditional family's lamp accuse switch single live wire distribution completely.
Make present traditional family all over the world exceed 95% and mostly adopt the mechanical switch of single live wire distribution, future when changing the Wi-Fi thing networking dimmer switch of adorning, need not be equipped with a N phase line more and gain power supply circuit, and as long as simply conveniently utilize original traditional family distribution again, can realize directly installing additional the utility model discloses the purpose of changing into IoT thing networking intelligence household electrical appliances dimmer switch is upgraded, directly brings the energy-conserving notion into in family or school and the public building.
As shown in fig. 1, the rear end output of the present invention can be connected to a general lamp body 150 for adjusting the illumination brightness, but in practical application, the motor 160 can be connected to adjust the rotation speed. Besides, the light-adjusting circuit 1 and the single-live-wire bidirectional power-cut module 2 can be packaged independently into an integrated circuit module during actual manufacturing. Or the light-adjusting circuit 1, the single-live-wire bidirectional cut-off module 2, the high-end step-down converting circuit 3 and the DC power converter 4 are packaged together into an integrated circuit module, so as to provide more simple and convenient operation for various out-of-phase adjusting and controlling applications in the future.
To sum up, the utility model is novel and practical in design, can achieve the effect of efficacy enhancement really, and has practicability, and the application of the utility model is provided by law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; therefore, all the equivalent changes and modifications made in the claims and the content of the specification of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a two-way cut electricity dimming control system of single live wire which characterized in that includes:
a light-adjusting circuit, which is connected in series on a single live wire, the light-adjusting circuit at least comprises a light-adjusting driver and two bidirectional power electronic elements connected with the light-adjusting driver and controlled by the light-adjusting driver, wherein one bidirectional power electronic element is arranged on the input end of the live wire, and the other bidirectional power electronic element is arranged on the output end of the live wire;
the single-live-wire bidirectional power cut-off module is connected in series on the dimming circuit and arranged between the two bidirectional power electronic elements, and the single-live-wire power cut-off is carried out when the dimming circuit is conducted;
a high-end step-down conversion circuit connected to the light-adjusting circuit, one end of which is arranged at the input end of the live wire connected with the bidirectional power electronic element, and the other end of which is arranged at the output end of the live wire connected with the other bidirectional power electronic element; and
and the power supply output end of the direct current power converter is connected to the dimming driver of the dimming circuit.
2. The single-live wire bidirectional cut-off dimming control system of claim 1, wherein: the dimming circuit and the single-line bi-directional power cut module are packaged as an integrated circuit module.
3. The single-live wire bidirectional cut-off dimming control system of claim 1, wherein: the light-adjusting circuit, the single-live-wire bidirectional cut-off module, the high-end step-down converting circuit and the DC power converter are packaged into an integrated circuit module.
4. The single-live wire bidirectional cut-off dimming control system of claim 1, wherein: the dimming cycle proportion of the dimming circuit is controlled to be more than 15%, the two bidirectional power electronic elements are composed of two separately arranged MosFETs, and the dimming driver is a MosFET dimming driver.
5. The single-live wire bidirectional cut-off dimming control system of claim 4, wherein: the dimming driver is connected with and controlled by an MCU (microprogrammed control unit) microprocessor, the MCU microprocessor receives power supply from the direct-current power converter, and the direct-current power converter outputs at least direct current DC3.3v/450mA of power supply to the MCU microprocessor.
6. The single-live wire bidirectional cut-off dimming control system of claim 5, wherein: when the proportion of the dimming cycle of the dimming circuit is controlled to be more than 50%, the single-live-wire bidirectional cut-off module directly cuts off the power of the single live wire under the conduction of the dimming circuit; when the dimming period proportion is controlled to be less than 50%, the high-end buck conversion circuit directly performs buck power supply.
7. The single-live wire bidirectional cut-off dimming control system of claim 5, wherein: the MCU microprocessor is additionally hung with a wireless communication module which is one of a Bluetooth wireless Bluetooth module, a Zigbee wireless module, a Z-wave wireless module, an RF2.4G, 3G, 4G and 5G wireless module, a 433MHz wireless module and a Wi-Fi wireless network module.
8. The single-live wire bidirectional cut-off dimming control system of claim 5, wherein: this two-way electricity blocking module of single live wire includes: two synchronous series-connected cut-off circuits which are in double parallel are connected with an electronic type change-over switch, the interior of the electronic type change-over switch is controlled by the MCU microprocessor, wherein one synchronous series-connected cut-off circuit is used for alternating current positive phase cut-off, and the other synchronous series-connected cut-off circuit is used for alternating current negative phase cut-off; each synchronous series-connection type cut-off circuit is provided with a synchronous rectification external power supply unit, a synchronous rectification internal power supply unit, an alternating current synchronous voltage control unit, an FET driving zero tracking control unit, a synchronous load dynamic adjustment unit and an alternating current synchronous zero tracking cut-off unit; the bidirectional dynamic full-bridge type power cut-off is carried out, under the condition of a single live wire, the power cut-off is carried out for 2 times in one cycle of the alternating current, and the power cut-off width automatically adjusts and compensates the power along with the increase and decrease of the borne load.
9. The single-live wire bidirectional cut-off dimming control system of claim 5, wherein: the rear end of the dimming circuit is provided with a lamp body or a motor.
10. The single-live wire bidirectional cut-off dimming control system of claim 5, wherein: the MCU microprocessor is connected with an inductor to sense the signal for controlling the action of the dimming circuit.
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| CN201920571904.8U CN209914134U (en) | 2019-04-25 | 2019-04-25 | Single-live-wire bidirectional power-off dimming control system |
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| CN201920571904.8U CN209914134U (en) | 2019-04-25 | 2019-04-25 | Single-live-wire bidirectional power-off dimming control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342658A (en) * | 2020-03-05 | 2020-06-26 | 深圳市智米旺电子科技有限公司 | Single live wire electronic switch gets electric circuit topology and intelligent electronic switch who constitutes thereof |
| CN111431282A (en) * | 2020-04-24 | 2020-07-17 | 温州大学 | Self-correcting synchronous pulse triggering method for power supply system of single-live-wire power-taking switch |
-
2019
- 2019-04-25 CN CN201920571904.8U patent/CN209914134U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342658A (en) * | 2020-03-05 | 2020-06-26 | 深圳市智米旺电子科技有限公司 | Single live wire electronic switch gets electric circuit topology and intelligent electronic switch who constitutes thereof |
| CN111342658B (en) * | 2020-03-05 | 2021-11-26 | 深圳市智米旺电子科技有限公司 | Single live wire electronic switch gets electric circuit topology and intelligent electronic switch who constitutes thereof |
| CN111431282A (en) * | 2020-04-24 | 2020-07-17 | 温州大学 | Self-correcting synchronous pulse triggering method for power supply system of single-live-wire power-taking switch |
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