RU173365U1 - Optical source - Google Patents

Optical source Download PDF

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Publication number
RU173365U1
RU173365U1 RU2016134316U RU2016134316U RU173365U1 RU 173365 U1 RU173365 U1 RU 173365U1 RU 2016134316 U RU2016134316 U RU 2016134316U RU 2016134316 U RU2016134316 U RU 2016134316U RU 173365 U1 RU173365 U1 RU 173365U1
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connected
bridge
terminal
shunted
capacitor
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RU2016134316U
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Russian (ru)
Inventor
Евгений Михайлович Силкин
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Евгений Михайлович Силкин
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B37/00Circuit arrangements for electric light sources in general
    • H05B37/02Controlling

Abstract

The optical radiation source contains a single-phase bridge on four diodes 1-4, the input terminals of which are shunted by a varistor 5, the input terminal is connected to the input terminal of the source through a protective element 6, an analog DC controller 7 having the terminals VDD, GND and DRAIN, the terminal DRAIN is connected to a positive output terminal of the bridge through a series-connected filter 8 and a serial circuit from a connection of LEDs 9, shunted by a capacitor 10, and a choke 11, shunted counter to the fifth diode 12, the VDD output of the controller under is connected to the negative output terminal of the bridge through the second capacitor 13, the second input terminal of the bridge is connected to the second input terminal of the source through the second filter 14, the output terminals of the bridge are shunted by the third capacitor 15 and resistor 16, as well as counter to the second series circuit from the sixth 17, seventh 18 and the eighth of 19 diodes, the common connection points of the diodes of the second serial circuit are connected to the positive and negative output terminals of the bridge, respectively, through the fourth 20 and fifth 21 capacitors, the connection is light diodes are made of one or more LEDs, or one or more LED arrays, or one or more LED lines connected electrically in series or in parallel, or in series and in parallel, and shunted by a second resistor 22, and the GND terminal of the controller is connected to the negative output terminal of the bridge through third resistor 23. The utility model extends the scope of the device. 1 ill.

Description

The utility model relates to lighting engineering and can be used in the design of new energy-efficient integrated sources of optical radiation with increased service life, universal, designed for both indoor and outdoor installations, having high efficiency and power and low levels of electromagnetic interference and pulsation of light flow. The utility model is aimed at expanding the scope of the device.

A known optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are connected to the input terminals of the source through a protective element, and the output terminals are shunted by a capacitor, an analog DC controller having REXT and GND terminals, and an OUT terminal, the OUT terminal of which is connected to a positive bridge output terminal through a serial circuit of several LED arrays, the GND terminal of the controller is connected to the negative bridge output terminal, and the REXT terminal is connected to the GND terminal through a res op (SM2082B Single Channel LED Constant Current Driver (datasheet) // www.dianyua-nic.com).

A disadvantage of the known source of optical radiation is a narrow scope. The source has a low efficiency, which can reach values of no more than 50-70%. The source uses a linear (parametric) controller, in which losses on active elements are significant, due to the principle of its action. A decrease in the ripple of the light flux due to an increase in the capacitance of the capacitor leads to a decrease in the power factor, an increase in the harmonic coefficient and inrush current of the inrush current, and also to an increase in the effective input current. All this increases the loss in the device and leads to a further decrease in the efficiency. The high harmonic coefficient of the current consumed from the mains supply (about 150%) in a known source of optical radiation impairs the electromagnetic compatibility of the device with the network and also leads to an increase in electric losses in the mains.

A known optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are connected to the input terminals of the source through a protective element, and the output terminals are shunted by a capacitor, an analog DC controller having CS, GND and DRAIN terminals, whose DRAIN terminal is connected to the positive bridge output via a serial circuit from the inductor and several LED arrays, and the GND controller output is connected to the negative bridge output directly, CS control output Teller terminal is connected to GND via a resistor series circuit shunted counter fifth diode, and the circuit of several LED arrays shunted with a second capacitor (VR2831A Non-isolated Buck Offline LED Driver // www.bpsemi.com)

A disadvantage of the known source of optical radiation is a narrow scope. The source also has a relatively low efficiency, which can reach values of no more than 70-75%. The source uses a pulse controller, in which losses on active elements are relatively reduced, due to the principle of its action. However, filtering the rectified voltage and reducing the ripple of the light flux by increasing the capacitance of the capacitor lead to a decrease in the power factor, an increase in the harmonic coefficient and inrush current of the inrush current, and also to an increase in the effective input current. All this increases the loss in the device and leads to a decrease in efficiency. A known source has poor electromagnetic compatibility with the supply network (high levels of electromagnetic interference and radiation, a high harmonic coefficient of the current consumed from the network), which significantly limits its scope.

A known optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are connected to the input terminals of the source through a protective element, and the output terminals are shunted by a capacitor, an analog DC controller having CS, GND and DRAIN terminals, whose DRAIN terminal is connected to the positive the output terminal of the bridge directly, and the terminal GND of the controller is connected to the negative output terminal of the bridge through a serial circuit from the inductor and several LED arrays, CS control output Teller terminal is connected to GND via a resistor series circuit shunted counter fifth diode, and the circuit of several LED arrays shunted with a second capacitor and a second resistor (SM7315P LED Driver // www.dianyua-nic.com \ SM7315P Datasheet PDF-GOSTON.htm).

A known source of optical radiation has similar disadvantages (relatively low efficiency, poor electromagnetic compatibility with the mains supply, inrush current and operating current, a limited number of possible type representatives of known design) narrowing the scope of its application. The analog DC controller used in the device is a type of pulse device.

A known optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are shunted by a varistor and connected to the input terminals of the source through a protective element, an analog DC controller having VDD, GND and DRAIN terminals, the DRAIN terminal is connected to the positive bridge output terminal in series connected by a filter and a series circuit of several LEDs connected electrically in series, shunted by a capacitor, and a throttle, shunted counter to the fifth By the way, the VDD output of the controller is connected to the negative output terminal of the bridge through the second capacitor, and the GND output of the controller is connected directly to the negative output terminal of the bridge (An9922V 3-Pin Switch-Mode 50 mA Average Current LED Lamp Driver // www.angstrem.ru).

A known source of optical radiation is the closest in technical essence to a utility model and is selected as a prototype.

The DC controller used in the source is a type of pulse device. The level of the output current (50 mA) of the controller is rigidly set by the internal device and parameters of the microcircuit (chip).

A disadvantage of the known source of optical radiation is a narrow scope. The source has a low efficiency, which can reach values of no more than 70-75%. The source, as noted above, also uses a pulse controller, in which losses on the active elements are relatively reduced, due to the principle of its action. However, the filtering of the rectified voltage is unsatisfactory, and the level of ripple of the light flux in the known device is quite high. A well-known source of optical radiation does not provide requirements for electromagnetic compatibility with the mains. A decrease in the ripple of the light flux due to an increase in the capacitance of the filter capacitor leads to a decrease in the power factor, an increase in the harmonic coefficient and inrush current of the inrush current, and also to an increase in the effective input current. All this increases the loss in the device and leads to a decrease in efficiency. A possible range of devices according to a known electrical circuit is also limited.

The utility model is aimed at solving the problem of expanding the field of application of the optical radiation source, which is the purpose of the utility model.

This goal is achieved by the fact that in an optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are shunted by a varistor, the input terminal is connected to the input terminal of the source through a protective element, an analog DC controller having VDD, GND and DRAIN terminals, DRAIN terminal connected to the positive output terminal of the bridge through a series-connected filter and a series circuit from a connection of LEDs shunted by a capacitor and a throttle shunted counter to the fifth diode the house, the VDD terminal of the controller is connected to the negative output terminal of the bridge through the second capacitor, the second input terminal of the bridge is connected to the second input terminal of the source through the second filter, the output terminals of the bridge are shunted by the third capacitor and resistor, as well as counter to the second series circuit from the sixth, seventh and eighth diodes, common connection points of the diodes of the second serial circuit are connected to the positive and negative output terminals of the bridge, respectively, through the fourth and fifth capacitors, with the unity of the LEDs is made of one or more LEDs, or one or more LED arrays, or one or more LED bars connected electrically in series, or in parallel, or in series and in parallel, and shunted by a second resistor, and the GND terminal of the controller is connected to the negative output terminal of the bridge through the third resistor.

A significant difference characterizing the utility model is the expansion of the scope due to, inter alia, increasing the efficiency of the optical radiation source as a result of changing the principle of operation, improving its technical characteristics and possible design options. The inventive optical radiation source can have a high power factor (more than 92%) and a low level of radio noise and radiation, has a relatively low harmonic coefficient of the current consumed from the network (less than 27%), provides low inrush currents (when the optical radiation source is turned on, they are practically absent ), as well as the amplitude of the input operating current. The level of effective current consumed by the device from the mains network (when running at a given power) and switching losses in elements, in particular, in bridge diodes, are reduced by 40-55%. As a result, the efficiency of the optical radiation source increases (approximately, by 5-7%). The electromagnetic compatibility of the optical radiation source with the supply network is improved (the levels of electromagnetic interference and radiation, the harmonic coefficient of the current consumed from the network are reduced). The pulsations of the light flux of a new source of optical radiation are reduced. In the new source, correction and change of the output current level of the controller is possible, which allows to expand the range of devices. Significantly increased the number of possible options for the design of the optical radiation source.

The expansion of the scope of the optical radiation source is due to new principles of the device and a new source design, a new electrical circuit, the implementation of the DC input circuit, new elements and connections, that is, the hallmarks of the utility model. Thus, the distinguishing features of the claimed source of optical radiation are significant.

The drawing shows an electrical diagram of an optical radiation source.

The optical radiation source contains a single-phase bridge on four diodes 1-4, the input terminals of which are shunted by a varistor 5, the input terminal is connected to the input terminal of the source through a protective element 6, an analog DC controller 7 having the terminals VDD, GND and DRAIN, the terminal DRAIN is connected to a positive output terminal of the bridge through a series-connected filter 8 and a serial circuit from a connection of LEDs 9, shunted by a capacitor 10, and a choke 11, shunted counter to the fifth diode 12, the VDD output of the controller under is connected to the negative output terminal of the bridge through the second capacitor 13, the second input terminal of the bridge is connected to the second input terminal of the source through the second filter 14, the output terminals of the bridge are shunted by the third capacitor 15 and resistor 16, as well as counter to the second series circuit from the sixth 17, seventh 18 and the eighth of 19 diodes, the common connection points of the diodes of the second serial circuit are connected to the positive and negative output terminals of the bridge, respectively, through the fourth 20 and fifth 21 capacitors, the connection is light the diodes are made of one or more LEDs, or one or more LED arrays, or one or more LED lines connected electrically in series, or in parallel, or in series and in parallel, and shunted by a second resistor 22, and the GND terminal of the controller is connected to the negative output terminal of the bridge through the third resistor 23.

The optical radiation source in the steady state operates as follows.

LED 9 (or LEDs, an LED array or ruler, or a combination of LEDs, LED arrays, LED arrays or a group of the listed elements connected electrically in series, or in parallel, or in series and in parallel) generates optical radiation in the range of visible light or in infrared, or in the ultraviolet parts of the spectrum. The analog controller 7 (together with the inductor 11) stabilizes the current through the LED 9, which is necessary for its normal operation. In this case, the level of the nominal (stabilized) current through the LED 9 is determined by the internal structure and parameters of the chip and can be adjusted and changed (in the direction of decrease) using the third resistor 23 (GND output of controller 7). The analog controller 7 operates on the principle of a pulse (modulated) device. The pulse output voltage of the controller 7 is applied from the load circuit (a series circuit from the inductor 11 and one (9) or several LEDs, or LED arrays, or LED arrays, connected electrically in series, or in parallel, or in series and in parallel). The inductor 11 is designed to limit the load current (via LED 9). After the end of the next pulse (in the interval of a pause), the current through the load circuit (11, 9, 10, 22, 12) flows due to the energy stored in the electromagnetic field of the inductor 11 in the interval of the voltage pulse, and closes through the fifth diode 12. Capacitor 10 charged due to the excess energy of the inductor 11 and discharged through the LED 9 and the second resistor 22. The capacitor 10, thus, performs the function of the output filter of the device. The capacitor 10 is discharged through the second resistor 22 to zero voltage after turning off the source (when the voltage on the capacitor 10 becomes lower than the threshold or forward voltage of the LED 9), which ensures the safe operation of the device. At the same time, the capacitor 10 and the second resistor 22 are a radio noise filter.

The load circuit (a series circuit of the inductor 11 and one (one, 9) or several LEDs, or LED arrays, or LED arrays, connected electrically in series, or in parallel, or in series and in parallel), can be connected to the corresponding (positive) terminal of the bridge ( 1-4) from the output side of the DRAIN controller 7.

The optical radiation source is connected to the input terminals through the protective element 5 (fuse, resistor or inductance, as well as their combinations, according to any known scheme on discrete elements or microassemblies, for example, based on one or more inductors and resistors). Element 5 protects the optical radiation source from short circuit and any emergency violations of the electrical mode. In addition, the protective element 5 (resistor, inductance) can limit the inrush of the inrush current, as well as the amplitude of the inrush currents that occur when charging the third 15, fourth 20 and fifth 21 capacitors. The protective element 5 (with the corresponding known implementation) additionally serves as a noise suppression system and reduce switching losses on the active elements of the device. To reduce the level of radio noise and emissions during the operation of the optical radiation source, a second filter can be used 14. The second filter 14 is performed according to any known power filter circuit, for example, based on inductors (chokes) and capacitors or their combinations, as well as resistors (P- or L-shaped circuit, a single element).

Varistor 5 is included in the device for protecting the optical radiation source from surge surges or lightning discharges.

A single-phase bridge (diodes 1-4) can be implemented on discrete elements or have an integral design (for example, MBS10F or KTs407). The principle of operation of the device remains unchanged. A single-phase bridge (diodes 1-4) rectifies (converts) the alternating supply (mains) voltage to alternating voltage with ripple at a frequency of 100 Hz (with a mains voltage of 50 Hz). To filter the rectified voltage are used, including the third capacitor 15 and the resistor 16.

The fourth 20 and fifth 21 capacitors are charged through the seventh diode 18 to a voltage equal to half the amplitude of the output voltage of the bridge (diodes 1-4) or, what is the same, to half the amplitude of the mains supply (AC) voltage. The fourth 20 and fifth 21 capacitors are charged according to a sequential switching circuit, which reduces the amplitudes of the charge currents and ensures the operation of the device with a high power factor. When discharging (through the sixth 17th and eighth 19th diodes) to the load (LED 9), the fourth 20 and fifth 21 capacitors work in parallel. The specified energetically beneficial. The harmonic coefficient (distortion) of the current consumed by the device from the mains, in this case, lies in the range of 20-27%. The voltage at the output terminals of the bridge (1-4) does not decrease to less than 50% of the amplitude value, which ensures the normal operation of the controller 7.

Technical solutions for the device of the input circuit of controller 7 (rectifier (1-4), series circuit (sixth, seventh and eighth diodes, 17-19), fourth 20 and fifth 21 capacitors) are applicable for any types of DC controllers (linear, "capacitor ”And pulse) for a similar purpose (for example, SM7307, SM7315P, fr5CA, BP1361, BP2812, BP2831A, BP2833A, ZONOPO8062, ACS1004, GM9910, 9910M1K and others, the outputs of the same functionality, at the same time, may have different designations from different manufacturers).

The third capacitor 15 may have a relatively small capacitance (compared to the fourth 20 and fifth 21 capacitors) and, together with the resistor 16, also performs the function of a noise suppression filter and a node to reduce switching losses in bridge diodes 1-4. At the same time through the resistor 16 there is a discharge of the third 15, fourth 20 and fifth 21 capacitors when the device is turned off, which ensures safe operation. The third capacitor 15 (with a small value of capacitance) practically does not affect the filtering of the rectified voltage and during its operation the power factor of the device does not decrease and the harmonic coefficient of the current consumed from the network does not increase.

The second capacitor 13 filters the supply voltage of the controller 7. This capacitor (13) also has a relatively small capacity. The fourth 20 and fifth 21 capacitors (when used), as a rule, perform the main function of filtering the output voltage of the bridge (1-4).

To reduce the level of electromagnetic interference and radiation, an additional filter can be installed in the optical radiation source circuit 8. It is also implemented according to any of the known electrical circuits of filters, for example, on the basis of inductors (chokes) and capacitors or their combinations, as well as resistors (П- or L-shaped schemes, single elements).

Using the third resistor 23, it is possible to more accurately set the output current of the controller 7 or reduce the level of the output current (7) over a sufficiently wide range.

In series with the seventh diode 18, an additional diode, an additional resistor, and an additional inductor (or any combination of these additional elements) can be installed, which improves the technical characteristics of the device.

In the scheme of the optical radiation source (for variants of its implementation), there may be no (individually or in any combination) varistor 5, filter 8, capacitor 10, second filter 14, third capacitor 15, resistor 16, second serial circuit (elements 17-19) simultaneously with the fourth 20 and fifth 21 capacitors, the second 22 and third 23 resistors. The principle of operation of the device does not change (the quantitative characteristics of the operating mode of the source change). Thus, the input terminals of the bridge (1-4) may not be bridged or bridged by the varistor 5 and connected to the input terminals of the source only through the protective element 6 or through the protective element 6 and the second filter 14, and the output terminals will be bridged by the third capacitor 15 and the resistor 16 or are counter-shunted by a second serial circuit of the sixth 17th, seventh 18th and eighth 19th diodes, the common connection points of the diodes (17-19) of the second serial circuit are connected to the positive and negative output terminals of the bridge, corresponding Namely, through the fourth 20 and fifth 21 capacitors, and resistor 16, or the third capacitor 15, the second series circuit of the sixth 17, the seventh 18 and the eighth 19 diodes, the common connection points of the diodes (17-19) of the second series circuit are connected to the positive and negative the output terminals of the bridge, respectively, through the fourth 20 and fifth 21 capacitors, and resistor 16, the connection of the LEDs 9 may not be bridged or bridged by the capacitor 10 and the second resistor 22, and the terminal DRAIN of the controller 7 is connected to the positive output the output of the bridge (1-4) through a serial circuit from the connection of the LEDs 9 and the inductor 11 or connected through a filter 8 and the considered serial circuit, the GND terminal of the controller is connected to the negative output terminal of the bridge directly or through the third resistor 23. In the absence of the above circuit elements ( 5, 8, 10, 14-23 or combinations of elements) the resulting device also refers to the claimed technical solution and can be designed and used in a specific field of application.

Compared with the prototype, the scope of the optical radiation source is significantly expanded.

The efficiency of the optical radiation source is increased by changing the principle of operation, improving its technical characteristics and possible design options. Indeed, the claimed optical radiation source has a high power factor (more than 92%) and a low level of radio noise and radiation (not exceeding the established standards), has a relatively low harmonic coefficient of the current consumed from the network (less than 27%), provides low inrush currents (at when the optical radiation source is turned on, they are practically absent), as well as the amplitude of the input working current. The harmonic coefficient of the device selected for the prototype reaches 150%. The higher harmonics of the current consumption in the prototype are sources of additional electrical losses. In the new source, the level of effective current consumed from the network (when running at a given power) and switching losses in elements, in particular in bridge diodes, are reduced by 40-55%.

As a result, the efficiency of a new source of optical radiation increases, approximately, by 5-7%, which expands the scope of its application.

The new optical radiation source can be used more efficiently for both indoor and outdoor installation in high-quality optical radiation systems, as well as in closed luminaires of limited volume in various lighting systems, or in special generators (sources) of infrared or ultraviolet radiation.

Additionally, the pulsation coefficient of the light flux can be reduced and, thus, the scope of the new optical radiation source can be expanded. The inventive source meets current requirements for the technical characteristics of such devices.

The level of electromagnetic interference and radiation can be significantly reduced and the electromagnetic compatibility of a new source of optical radiation with a supply network can be improved.

The output current of the device can be set as well as regulated (by changing the resistor between the GND terminal of the controller and the negative output terminal of the bridge) over a wide range.

The nomenclature of type designs of optical radiation sources according to the new scheme is expanding significantly. Each type design can be an optimal in design and sufficiently technological product, which reduces, in particular, the final price of the products and expands the scope.

Claims (1)

  1. An optical radiation source containing a single-phase bridge with four diodes, the input terminals of which are shunted by a varistor, the input terminal is connected to the input terminal of the source through a protective element, an analog DC controller having VDD, GND and DRAIN terminals, the DRAIN terminal is connected to the positive bridge output terminal through a series-connected filter and a series circuit of a connection of LEDs shunted by a capacitor and a throttle shunted counter to the fifth diode, the VDD terminal of the controller is connected to a negative output terminal of the bridge through the second capacitor, characterized in that the second input terminal of the bridge is connected to the second input terminal of the source through the second filter, the output terminals of the bridge are shunted by the third capacitor and resistor, as well as counter to the second serial circuit of the sixth, seventh and eighth diodes, common the connection points of the diodes of the second serial circuit are connected to the positive and negative output terminals of the bridge, respectively, through the fourth and fifth capacitors, the connection of the LEDs the dow is made of one or more LEDs, or one or more LED arrays, or one or more LED arrays, connected electrically in series or in parallel, or in series and in parallel, and shunted by a second resistor, and the GND terminal of the controller is connected to the negative output terminal of the bridge through the third resistor.
RU2016134316U 2016-08-22 2016-08-22 Optical source RU173365U1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090261735A1 (en) * 2008-04-17 2009-10-22 Heathco Llc Lighting System to Facilitate Remote Modification of a Light Fixture Modifiable Operating Parameter
RU158342U1 (en) * 2015-07-15 2015-12-27 Евгений Михайлович Силкин Integrated source of optical radiation
RU158331U1 (en) * 2015-05-21 2015-12-27 Евгений Михайлович Силкин Source of optical radiation
RU158495U1 (en) * 2015-06-30 2016-01-10 Евгений Михайлович Силкин Source of optical radiation
RU160206U1 (en) * 2015-07-21 2016-03-10 Федеральное государственное бюджетное учреждение науки Физико-технический институт им. А.Ф. Иоффе Российской академии наук Lighting device
RU160311U1 (en) * 2015-06-25 2016-03-10 Евгений Михайлович Силкин Integrated source of optical radiation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090261735A1 (en) * 2008-04-17 2009-10-22 Heathco Llc Lighting System to Facilitate Remote Modification of a Light Fixture Modifiable Operating Parameter
RU158331U1 (en) * 2015-05-21 2015-12-27 Евгений Михайлович Силкин Source of optical radiation
RU160311U1 (en) * 2015-06-25 2016-03-10 Евгений Михайлович Силкин Integrated source of optical radiation
RU158495U1 (en) * 2015-06-30 2016-01-10 Евгений Михайлович Силкин Source of optical radiation
RU158342U1 (en) * 2015-07-15 2015-12-27 Евгений Михайлович Силкин Integrated source of optical radiation
RU160206U1 (en) * 2015-07-21 2016-03-10 Федеральное государственное бюджетное учреждение науки Физико-технический институт им. А.Ф. Иоффе Российской академии наук Lighting device

Non-Patent Citations (1)

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Title
Каталог LED драйверов: An9922 3 // www.angstrem.ru. *

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MM9K Utility model has become invalid (non-payment of fees)

Effective date: 20180823