CN205610491U - A power adapter for 60W crystal lamp - Google Patents
A power adapter for 60W crystal lamp Download PDFInfo
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- CN205610491U CN205610491U CN201620472304.2U CN201620472304U CN205610491U CN 205610491 U CN205610491 U CN 205610491U CN 201620472304 U CN201620472304 U CN 201620472304U CN 205610491 U CN205610491 U CN 205610491U
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Abstract
The utility model provides a power adapter for 60W crystal lamp, including NULL rectifying and wave -filtering unit, PWM control translation unit, output Rectifier filtering unit and output sample feedback Unit, NULL rectifying and wave -filtering unit is used for connecting the commercial power to to exchange electric signal transition and become the direct current signal, and carry out filtering to the direct current signal that obtains and handle, NULL rectifying and wave -filtering unit includes: live wire, zero line interface, protective tube F1 and thermistor NTC1 on the live wire interface concatenate, be connected with piezo -resistor ZNR1 between thermistor NTC1's the other end and the zero line interface, the interchange filter module who comprises common mode inductance FL1, electric capacity CX1 and common mode inductance FL2 still is connected with the electric charge module of releasing at electric capacity CX1's both ends, the inverter direct current module that constitutes by rectifier bridge BD1. The utility model provides a power adapter can just export the 21V direct current of commercial power ac inversion for the leading needs of LED drive stably, and there is not the potential danger of electric shock in the input.
Description
Technical Field
The utility model relates to a power adapter technical field, concretely relates to a quartzy lamp power adapter that is used for power at 60W.
Background
With the continuous development of the LED technology, the LED has a wider application range due to a series of advantages of small size, high brightness, wide color gamut, wide brightness range, linear adjustability, high light emitting efficiency, long service life, and the like. The crystal ceiling lamp in the indoor hall or living room has been generally used as the light source of the crystal lamp by the incandescent lamp or the inert gas lamp, but is gradually replaced by the LED lamp at present. And before the driving of the LED, a power adapter is needed to provide corresponding direct current power for the LED. The power adapters in the market at present are various, but the power adapters of different electronic products still have differences, and the requirements are different. Some existing 60W crystal lamp power adapters have potential electric shock risks on an alternating current input line, interference fluctuation of an alternating current input side is large, the size of the whole power adapter is large, driving voltage is not stable enough, and the power adapter has the defect of high power consumption under no-load, so that the power input cost is increased.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model provides a power adapter for 60W crystal lamp, this power adapter can convert commercial power alternating current into the leading 21V direct current that needs of LED drive, and output is stable, and there is not the potential danger of electrocuteeing in the input.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a power adapter for 60W crystal lamp comprises an AC input rectifying and filtering unit, a PWM control conversion unit, an output rectifying and filtering unit and an output sampling feedback unit,
the alternating current input rectification filter unit is used for connecting a mains supply, converting an alternating current signal into a direct current signal and filtering the obtained direct current signal, and comprises:
the live wire interface and the zero line interface are used for connecting commercial power;
the fuse protector is characterized by comprising a protective tube F1 and a thermistor NTC1 which are connected in series with a live wire interface, wherein a piezoresistor ZNR1 is connected between the other end of the thermistor NTC1 and a zero wire interface;
the input side of the common mode inductor FL1 is connected in parallel to two ends of a piezoresistor ZNR1, the output side of the common mode inductor FL1 is connected in parallel to a capacitor CX1 and is connected to the input side of the common mode inductor FL2, and meanwhile, two ends of the capacitor CX1 are also connected with a charge discharging module which is composed of a resistor R1 and a resistor R2 which are connected in series and a resistor R3 and a resistor R4 which are connected in series, wherein the serial connection point between the resistor R1 and the resistor R2 is connected with the serial connection point between the resistor R3 and the resistor R4, and the resistor R1 and the resistor R2, the resistor R3 and the resistor R4 which are connected in series are connected in parallel to two ends of the capacitor CX 1;
the signal input end of the rectifier bridge BD1 is connected to the output side of the common-mode inductor FL2, and the signal output end of the rectifier bridge BD1 is connected in parallel with a direct-current filtering module, wherein the direct-current filtering module comprises a filtering capacitor C1 and a filtering capacitor C2 which are connected in parallel with the signal output end of the rectifier bridge BD 1.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model provides a power adapter for 60W crystal lamp when alternating current signal inserts, can prevent through setting up the alternating current filtering module that the interfering signal of electric wire netting from influencing circuit work, also can prevent that the interfering signal that the circuit produced from polluting the electric wire netting, the charge of storing can be released in electric capacity CX1 to the charge of setting simultaneously module of releasing under the circumstances of alternating current closed electricity to hand touch AC input line causes the electric shock danger. Meanwhile, the output sampling feedback unit is adopted to feed the output voltage back to the PWM control conversion unit, so that the PWM control conversion unit can adjust the voltage based on the current output voltage to achieve stable output.
Drawings
Fig. 1 is a schematic block diagram of a power adapter for a 60W crystal lamp according to the present invention;
fig. 2 is a schematic diagram of a power adapter for a 60W crystal lamp according to the present invention;
fig. 3 is a schematic diagram of the ac input rectifying and filtering unit according to the present invention;
fig. 4 is a schematic diagram of the PWM control conversion unit according to the present invention;
fig. 5 is a schematic diagram of the output rectifying and filtering unit according to the present invention;
fig. 6 is a schematic diagram of the output sampling feedback unit according to the present invention;
fig. 7 is a circuit layout diagram of the power adapter for 60W crystal lamp according to the present invention.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:
referring to fig. 1-2 in combination with fig. 3, the present invention provides a power adapter for 60W crystal lamp, which comprises an ac input rectifying and filtering unit 100, a PWM control converting unit 200, an output rectifying and filtering unit 300, and an output sampling feedback unit 400, wherein the ac input rectifying and filtering unit 100 is used for connecting to the mains and converting an ac electrical signal into a dc electrical signal, and filtering the obtained dc electrical signal, as shown in fig. 3,
the ac input rectifying and filtering unit 100 includes: a live wire interface L and a zero line interface N for connecting commercial power; the fuse protector is characterized by comprising a protective tube F1 and a thermistor NTC1 which are connected in series with a live wire interface L, wherein a piezoresistor ZNR1 is connected between the other end of the thermistor NTC1 and a zero wire interface N; the input side of the common mode inductor FL1 is connected in parallel to two ends of a piezoresistor ZNR1, the output side of the common mode inductor FL1 is connected in parallel to a capacitor CX1 and is connected to the input side of the common mode inductor FL2, and meanwhile, two ends of the capacitor CX1 are also connected with a charge discharging module which is composed of a resistor R1 and a resistor R2 which are connected in series and a resistor R3 and a resistor R4 which are connected in series, wherein the serial connection point between the resistor R1 and the resistor R2 is connected with the serial connection point between the resistor R3 and the resistor R4, and the resistor R1 and the resistor R2, the resistor R3 and the resistor R4 which are connected in series are connected in parallel to two ends of the capacitor CX 1; the signal input end of the rectifier bridge BD1 is connected to the output side of the common-mode inductor FL2, and the signal output end of the rectifier bridge BD1 is connected in parallel with a direct-current filtering module, wherein the direct-current filtering module comprises a filtering capacitor C1 and a filtering capacitor C2 which are connected in parallel with the signal output end of the rectifier bridge BD 1.
In the above scheme, the utility model provides a 60W crystal lamp power adapter's alternating current input rectification filter unit 100, live wire interface L and zero line interface N connect electric network live wire, zero line respectively; the fuse tube F1 can be fused and protected under the condition of power grid or rear-stage abnormity so as to ensure that potential safety hazards do not occur; the thermistor NTC1 can limit a startup surge circuit and protect a rectifier bridge and a filter capacitor; the piezoresistor ZNR1 can prevent the surge voltage of the power grid and the lightning stroke voltage from damaging the rear-stage device; the LCL alternating current filter module consisting of the common-mode inductor FL1, the capacitor CX1(X2) and the common-mode inductor FL2 can prevent interference signals of a power grid from influencing the work of a circuit and prevent the interference signals generated by the circuit from polluting the power grid; the charge discharging module is composed of resistors R1, R2, R3 and R4, and can discharge the charge stored in CX1 under the condition of alternating current power off by the circuit connection mode so as to avoid electric shock hazard caused by touching the AC input line by hands; the rectifier bridge BD1 rectifies alternating current commercial power into direct current; the dc filter module, which is composed of filter capacitors C1 and C2, can filter the rectified dc power to make it close to the dc power that can be used in an ideal situation. Therefore, the utility model discloses a series of safeguard procedures have been done when exchanging input for can be safer when putting into use, the interference fluctuation signal of input is little moreover.
The PWM control conversion unit 200 mentioned in the above scheme is mainly used for receiving the dc signal output by the ac input rectifying and filtering unit 100 and controllably outputting the dc signal to the LED of the crystal lamp as a drive. Specifically, referring to fig. 4, the PWM control conversion unit 200 includes a PWM control chip U1 and a transformer T1, the transformer T1 has a primary side main winding (pin1-pin3) and a primary side auxiliary winding (pin4-pin5), and the PWM control chip U1 has a power supply terminal VCC (pin 1), a feedback input terminal FB (pin 7), and a control output terminal GATE (pin 3); the power supply end VCC is connected with a voltage-taking module, the voltage-taking module comprises a resistor R5, a resistor R6 and a charging capacitor C4 which are connected in series, and the power supply end is connected to a charging end of the charging capacitor C4; the feedback input terminal FB is connected to the output sampling feedback unit 400; the control output end GATE is connected to the grid electrode of the switching tube Q1, and the drain electrode of the switching tube Q1 is connected to a primary side main winding (pin1-pin3) of the transformer module through the spike voltage absorption module; the primary auxiliary winding (pin5 terminal) of the transformer T1 is connected to the power supply terminal VCC of the PWM control chip U1 through a resistor R14 and a diode D3 to provide a continuous VCC voltage to the PWM control chip U1.
The peak voltage absorbing module is composed of a resistor R36, a capacitor C5 and a diode D1, wherein one end of the capacitor C5 is connected with the cathode of the diode D1 after the capacitor C36 and the resistor R36 are connected in parallel, the other end of the capacitor C5 is connected to one end pin1 of a primary main winding of a transformer T1, and the anode of the diode D1 is connected to the other end pin3 of the primary main winding of the transformer T1. Here, the peak voltage absorption module is an RCD absorption circuit, which absorbs an oscillation peak generated by a parasitic capacitance of the MOS transistor and a leakage inductance of the transformer, and protects the MOSFET Q1. As shown in fig. 4, the PWM control chip U1 further has a line voltage detection end BO (pin5), an overvoltage detection end DEM (pin 8), and an over-temperature protection end RT (pin 6); the line voltage detection end BO is connected to the output of the ac input rectifying and filtering unit 100 through a resistor R8 and a resistor R7; the overvoltage detection end DEM is connected to a series connection point of a resistor R15 and a resistor R16, the other end of the resistor R15 is connected to a primary side auxiliary winding (pin5) of a transformer T1, the other end of the resistor R16 is grounded, and two ends of the resistor R16 are connected with a capacitor C3 in parallel; the over-temperature protection end RT is grounded through a resistor R13 and a thermistor NTC 2.
When the line voltage detection pin BO detects that the input voltage reaches a certain voltage through the resistors R7 and R8, the resistors R5 and R6 provide an initial starting voltage for the control IC U1, and then the IC U1 starts to operate, the GATE drive pin drives the switch mosfet q1, the transformer T1 also starts to operate, and electric energy is converted into magnetic energy to be stored in the transformer. The transformer auxiliary winding (pins 3 and 4) provides continuous Vcc voltage for IC, R14 current limit, D3 Vcc rectifier diode, and C4 may also be used as Vcc filter capacitor. The DEM pin is an overvoltage detection pin, and the output voltage is judged by detecting VCC voltage; the RT pin is an over-temperature protection pin and is connected with an NTC resistor to the ground for thermal protection; FB is a feedback input pin to which the output voltage is fed back by the output sampling feedback unit 400 to maintain a constant output voltage. For example, when the output sampling feedback unit 400 detects that the output voltage of the transformer T1 increases, the voltage fed back to the FB pin increases, and at this time, the U1 affects the duty ratio of the output signal by controlling the on-time of the switching transistor Q1 to be shortened, thereby reducing the output voltage of the transformer T1.
As a further technical solution of the present invention, the transformer T1 has a secondary winding, the output rectifying and filtering unit 300 is connected to both ends of the secondary winding of the transformer T1, referring to fig. 5, the output rectifying and filtering unit 300 includes: the anode of the rectifying combined diode D4 is connected to the secondary winding FL + end, and is used for converting the magnetic energy stored in the transformer T1 into electric energy and rectifying the electric energy into direct current, and the two ends of the rectifying combined diode D4 are connected in parallel with an RC absorption module; the pi-type filter module comprises a capacitor C12, a capacitor C13 and a common-mode inductor L2, wherein one end of the capacitor C12 is connected to the cathode of a rectifying combined diode D4, the other end of the capacitor C12 is connected with the FL-end of a secondary winding, the input side of the common-mode inductor L2 is connected with a capacitor C12 in parallel, the output side of the common-mode inductor L2 is connected with a capacitor C13 in parallel, and two ends of the capacitor C13 form voltage output ends (V + and V. The RC absorption module is composed of a resistor R24, a resistor R25 and a capacitor C10, wherein one end of the resistor R24 is connected with the anode of the rectification combination diode D4 after the resistor R25 is connected in parallel, and the other end of the resistor R24 is connected with the cathode of the rectification combination diode D4. And the two ends of the capacitor C12 are also connected in parallel with an indicator light module, and the indicator light module is formed by connecting a light-emitting diode LED1A and a resistor R27 in series.
In the scheme, the rectifier combination diode D4 converts the magnetic energy stored in the transformer into electric energy and rectifies the electric energy into direct current, and the capacitors C11 and C12 filter the direct current. The capacitor C12, the common-mode inductor L2 and the capacitor C13 form a pi-type filter circuit, and ripple and noise of the output voltage are further reduced. The resistors R24 and R25 and the capacitor C10 form an RC absorption loop to absorb the peak voltage at two ends of the rectifying combined diode D4; the LED1A and the R27 form a working indicator light loop, and when the output is normal, the LED lights; resistor R33 is isolated from capacitor C16 secondary ground from ground.
As can be seen from fig. 5, a resistor R26 is further connected in parallel to the two ends of the capacitor C12, and one end of the resistor R26 constitutes a sampling end of the output voltage V. The output sample feedback unit 400 takes the voltage from the terminal V. Referring to fig. 6, the output sampling feedback unit includes a photo coupler U2 and a reference voltage providing module; the signal input end of the photoelectric coupler U2 is respectively connected with the output rectifying and filtering unit and the reference voltage providing module, so that the output voltage of the transformer T1 is compared with the reference voltage provided by the reference voltage providing module, and different signals are output from the signal output end of the photoelectric coupler U3 and fed back to the feedback input end of the PWM control chip U1. The reference voltage providing module is composed of peripheral circuits of U3 and U3, and U3 adopts TL431 which provides a high-precision 2.5V reference voltage (error is 0.3%). The resistors R30, R31, R35 sample the output voltage V and feed the result back to the feedback input FB of the primary control IC U1 through the photocoupler U2, thereby realizing closed-loop control of the IC. Specifically, when the output voltage (voltage at a point V) of the transformer T1 increases, the control terminal voltage of the U3 increases, so that the light emission of the light emitting diode in the photocoupler U2 increases, the conduction enhancement internal resistance of the phototriode decreases, and the voltage of the feedback input pin of the PWM control chip U1 increases, at this time, the conduction time of the U1 control MOS transistor Q1 is shortened, so that the magnetic energy storage amount of the transformer T1 is affected, and after electromagnetic coupling, the output voltage (voltage at a point V) of the secondary winding decreases, and thus the output voltage is stabilized.
The utility model discloses except giving the power adapter schematic diagram of above-mentioned 60W crystal lamp, still given the PCB overall arrangement, see figure 7. As can be seen in fig. 7, the power adapter circuit board of the present invention is a rectangular plate;
for the aforementioned concentrated layout of the ac input rectifying and filtering unit 100 in the left area of the PCB, the specific layout manner is: the voltage dependent resistor ZNR1 is arranged at the lower left corner of a PCB, the common mode inductor FL1 is arranged on the right side of the voltage dependent resistor ZNR1, the capacitor CX1 is arranged on the right side of the common mode inductor FL1, the live wire interface L and the zero wire interface N are arranged on the upper left side of the common mode inductor FL1, the common mode inductor FL2 is arranged above the capacitor CX1 and the common mode inductor FL1, the rectifier bridge BD1 is arranged above the common mode inductor FL2, the thermistor NTC1 is arranged at the upper left corner of the PCB, the fuse tube is located between the thermistor NTC1 and the rectifier bridge BD1, and the filter capacitor CX 2 is located at the right side of the capacitor CX1 and the common mode inductor. For the aforementioned PWM control conversion unit 200, the output sampling feedback unit 400, and the output rectifying and filtering unit 300 are collectively disposed in the upper region of the middle portion of the PCB, the lower region of the middle portion of the PCB, and the right region of the PCB. The utility model provides an among the above-mentioned PCB layout, each unit is rationally distributed, and makes whole PCB face area occupy for a short time, and then lets the power adapter that finally encapsulates have less volume, and convenience of customers carries.
Generally speaking, the utility model provides an above-mentioned 60W crystal lamp power adapter, it is 21V direct current that LED drive preposition needs with commercial power alternating current conversion, has following characteristics:
wide range voltage input (100V-240VAC 50/60 Hz);
low no-load power consumption: less than 0.3W;
high conversion efficiency: the average efficiency is more than 87%;
the adapter body has small volume and high power density.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. A power adapter for 60W crystal lamp comprises an AC input rectifying and filtering unit, a PWM control conversion unit, an output rectifying and filtering unit and an output sampling feedback unit,
the alternating current input rectification filter unit is used for connecting a mains supply, converting an alternating current signal into a direct current signal and filtering the obtained direct current signal, and comprises:
the live wire interface and the zero line interface are used for connecting commercial power;
the fuse protector is characterized by comprising a protective tube F1 and a thermistor NTC1 which are connected in series with a live wire interface, wherein a piezoresistor ZNR1 is connected between the other end of the thermistor NTC1 and a zero wire interface;
the input side of the common mode inductor FL1 is connected in parallel to two ends of a piezoresistor ZNR1, the output side of the common mode inductor FL1 is connected in parallel to a capacitor CX1 and is connected to the input side of the common mode inductor FL2, and meanwhile, two ends of the capacitor CX1 are also connected with a charge discharging module which is composed of a resistor R1 and a resistor R2 which are connected in series and a resistor R3 and a resistor R4 which are connected in series, wherein the serial connection point between the resistor R1 and the resistor R2 is connected with the serial connection point between the resistor R3 and the resistor R4, and the resistor R1 and the resistor R2, the resistor R3 and the resistor R4 which are connected in series are connected in parallel to two ends of the capacitor CX 1;
the signal input end of the rectifier bridge BD1 is connected to the output side of the common-mode inductor FL2, and the signal output end of the rectifier bridge BD1 is connected in parallel with a direct-current filtering module, wherein the direct-current filtering module comprises a filtering capacitor C1 and a filtering capacitor C2 which are connected in parallel with the signal output end of the rectifier bridge BD 1.
2. The power adapter for 60W crystal lamp as claimed in claim 1, wherein the PWM control converting unit comprises a PWM control chip U1 and a transformer T1, the transformer T1 has a primary side main winding and a primary side auxiliary winding, the PWM control chip U1 has power supply terminals, a feedback input terminal and a control output terminal; wherein,
the power supply end is connected with a voltage-taking module, the voltage-taking module comprises a resistor R5, a resistor R6 and a charging capacitor C4 which are connected in series, and the power supply end is connected to the charging end of the charging capacitor C4; the feedback input end is connected with the output sampling feedback unit; the control output end is connected to the grid electrode of the switching tube Q1, and the drain electrode of the switching tube Q1 is connected to the primary side main winding of the transformer module through the peak voltage absorption module;
the primary auxiliary winding of the transformer T1 is connected to the power supply terminal of the PWM controller U1 via a resistor R14 and a diode D3 to provide a continuous Vcc voltage to the PWM controller U1.
3. The power adapter of claim 2, wherein the peak voltage absorbing module comprises a resistor R36, a capacitor C5 and a diode D1, wherein the capacitor C5 is connected in parallel with the resistor R36, and then one end of the capacitor C5 is connected to the cathode of the diode D1, the other end of the capacitor C5 is connected to one end of the primary main winding of the transformer T1, and the anode of the diode D1 is connected to the other end of the primary main winding of the transformer T1.
4. The power adapter for 60W crystal lamp as claimed in claim 2 or 3, wherein the PWM control chip U1 further has a line voltage detection terminal, an over-temperature protection terminal; wherein,
the line voltage detection end is connected to the output of the alternating current input rectifying and filtering unit through a resistor R8 and a resistor R7;
the overvoltage detection end is connected to a series connection point of a resistor R15 and a resistor R16, the other end of the resistor R15 is connected to a primary side auxiliary winding of a transformer T1, the other end of the resistor R16 is grounded, and two ends of the resistor R16 are connected with a capacitor C3 in parallel;
the over-temperature protection end is grounded through a resistor R13 and a thermistor NTC 2.
5. The power adapter for 60W crystal lamp as claimed in claim 4, wherein said transformer T1 has a secondary winding, said output rectifying and filtering unit is connected across the secondary winding of transformer T1 and comprises:
the anode of the rectifying combined diode D4 is connected to the secondary winding FL + end, and is used for converting the magnetic energy stored in the transformer T1 into electric energy and rectifying the electric energy into direct current, and the two ends of the rectifying combined diode D4 are connected in parallel with an RC absorption module;
the pi-type filter module comprises a capacitor C12, a capacitor C13 and a common-mode inductor L2, wherein one end of the capacitor C12 is connected to the cathode of a rectifying combined diode D4, the other end of the capacitor C12 is connected with the FL-end of a secondary winding, the input side of the common-mode inductor L2 is connected with the capacitor C12 in parallel, the output side of the common-mode inductor L2 is connected with the capacitor C13 in parallel, and two ends of the capacitor C13 form a voltage output.
6. The power adapter of claim 5, wherein the RC absorption module is composed of a resistor R24, a resistor R25 and a capacitor C10, the resistor R24 is connected in parallel with the resistor R25, and then one end of the resistor R24 is connected to the anode of the rectifying combined diode D4, and the other end of the resistor R24 is connected to the cathode of the rectifying combined diode D4.
7. The power adapter for 60W crystal lamp as claimed in claim 5 or 6, wherein an indicator light module is connected in parallel to the two ends of the capacitor C12, and the indicator light module is formed by connecting a light emitting diode LED1A and a resistor R27 in series.
8. The power adapter for 60W crystal lamp as claimed in claim 7, wherein the output sampling feedback unit comprises a photocoupler U2 and a reference voltage providing module; wherein,
the signal input end of the photoelectric coupler U2 is respectively connected with the output rectifying and filtering unit and the reference voltage providing module, so that the output voltage of the transformer T1 is compared with the reference voltage provided by the reference voltage providing module, and different signals are output at the signal output end of the photoelectric coupler U3 and fed back to the feedback input end of the PWM control chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620472304.2U CN205610491U (en) | 2016-05-23 | 2016-05-23 | A power adapter for 60W crystal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620472304.2U CN205610491U (en) | 2016-05-23 | 2016-05-23 | A power adapter for 60W crystal lamp |
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| CN205610491U true CN205610491U (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620472304.2U Expired - Fee Related CN205610491U (en) | 2016-05-23 | 2016-05-23 | A power adapter for 60W crystal lamp |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238689A (en) * | 2017-07-24 | 2017-10-10 | 重庆环投生态环境监测网络与工程治理有限公司 | Wireless detecting system is used in sewage treatment process |
| CN110519901A (en) * | 2019-09-19 | 2019-11-29 | 深圳市紫光照明技术股份有限公司 | A kind of Intelligent lamp |
| CN111697858A (en) * | 2020-07-15 | 2020-09-22 | 东莞市大忠电子有限公司 | Water purifier power adapter with vehicle-mounted AC/DC input |
| WO2020220771A1 (en) * | 2019-04-30 | 2020-11-05 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
| CN113790754A (en) * | 2021-08-30 | 2021-12-14 | 常熟理工学院 | Remote temperature and humidity acquisition system |
-
2016
- 2016-05-23 CN CN201620472304.2U patent/CN205610491U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238689A (en) * | 2017-07-24 | 2017-10-10 | 重庆环投生态环境监测网络与工程治理有限公司 | Wireless detecting system is used in sewage treatment process |
| WO2020220771A1 (en) * | 2019-04-30 | 2020-11-05 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
| CN110519901A (en) * | 2019-09-19 | 2019-11-29 | 深圳市紫光照明技术股份有限公司 | A kind of Intelligent lamp |
| CN111697858A (en) * | 2020-07-15 | 2020-09-22 | 东莞市大忠电子有限公司 | Water purifier power adapter with vehicle-mounted AC/DC input |
| CN113790754A (en) * | 2021-08-30 | 2021-12-14 | 常熟理工学院 | Remote temperature and humidity acquisition system |
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Effective date of registration: 20170328 Address after: Hongqi Town Jinwan District golden grain road 519090 Guangdong province Zhuhai City No. 2, No. 1 building sixth room 602 Patentee after: Zhuhai Canyuan Electronic Technology Co.,Ltd. Address before: Jiang Xi Road 401336 Chongqing Nan'an District No. 11 No. 11-2 A2 second Patentee before: CHONGQING BRIGHT SOURCE ELECTRONIC CO.,LTD. |
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Granted publication date: 20160928 |