41 results about "Dimmer" patented technology

The application provides an automatic induction lighting dimming lamp and belongs to the technical field of adjusting lamps. The automatic induction lighting dimming lamp comprises a dimming lamp body, a triangular support frame is fixed to the lower end of the dimming lamp body, a heat dissipation box is fixed to one side of the dimming lamp body, a through hole is formed in one side of the heat dissipation box, a wind cooling assembly is clamped in the through hole, one end of the wind cooling assembly extends out of the heat dissipation box, a connecting assembly is arranged between the wind cooling assembly and the side wall of the heat dissipation box, an installation plate capable of being clamped into the heat dissipation box through the through hole is fixed to one end of the wind cooling assembly, a controller is detachably installed on the installation plate, a water cooling assembly is arranged on the installation plate, the wind cooling assembly can drive the installation plate to move out of the heat dissipation box, ventilation holes are formed in the two sides of the heat dissipation box, and dust screens are fixed to the inner walls of the ventilation holes. The application has the advantages of good heat dissipation effect of the controller, improved service life of the controller, quick disassembly and assembly of the controller, and convenient maintenance and replacement of the controller.

A load control device for controlling the amount of power delivered from an AC power source to an electrical load is operable to conduct enough current through a thyristor of a connected dimmer switch to exceed rated latching and holding currents of the thyristor. The load control device comprises a controllable-load circuit operable to conduct a controllable-load current through the thyristor of the dimmer switch. The load control device disables the controllable-load circuit when the phase-control voltage received from the dimmer switch is a reverse phase-control waveform. When the phase-control voltage received from the dimmer switch is a forward phase-control waveform, the load control device is operable to decrease the magnitude of the controllable-load current so as to conduct only enough current as is required in order to exceed rated latching and holding currents of the thyristor.

1. The name of the design product: the panel of dimmer. 2. The use of the design product: the dimmer is used to adjust the brightness of the lighting device, and the panel of the dimmer is used for the control panel of the dimmer. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: the perspective view of design 1. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: the solid line part in the view is the part claimed, and the dashed line part is not claimed.

Disclosed is an LED lighting circuit based on PWM, including a power source, a control circuit and an LED light-emitting element, and further including a non-light-emitting load element. The non-light-emitting load element is connected in parallel to the LED light-emitting element, the power source is connected to a constant-current source, the constant-current source supplies power to the LED light-emitting element and the non-light-emitting load element, and when the constant-current source is in a current rising or falling phase, the control circuit controls an LED light-emitting element loop to be disconnected, and controls a non-light-emitting load element loop to be connected; and when the current of the constant-current source is in a steady state, the control circuit controls the non-light-emitting load element loop to be disconnected, and controls the LED light-emitting element loop to be connected. Further disclosed are a temporal dimmer control circuit and control method based on PWM. The present disclosure can solve the problem in the prior art of it not being possible for the brightness and color accuracy of a light source to meet user requirements.

This invention provides a triac-controlled LED driver control circuit, relating to the field of circuit technology. The circuit includes a circuit board with a microcontroller mounted on its top surface. One end of the microcontroller is electrically connected to a resistor dimmer via a power line, another end is electrically connected to a rectifier via a power line, and yet another end is electrically connected to an optocoupler via a power line. Several sets of resistive elements are arranged on the surface of the circuit board. In use, this invention enables dimming via three input signals: triac dimming, 0 / 1~10V dimming, and resistor dimmer dimming. These three dimming input signal voltage changes are converted into an output PWM signal pulse width by the microcontroller to control the turn-on time of the low-voltage MOS transistor Q3. The dimming process does not affect the normal operation of the driver power supply system, thus avoiding issues with flickering and dimming depth.

The application provides a vehicle light brightness adjustment method and device, electronic equipment, medium and vehicle. The method comprises the following steps: judging whether the running state of a to-be-detected lamp is normal based on a received detection request; in response to the running state of the to-be-detected lamp being normal and meeting a brightness adjustment condition, adjusting the duty cycle of a PWM signal to make the brightness of the to-be-detected lamp brighter or dimmer. The method can accurately judge whether the running state of the to-be-detected lamp is normal or abnormal based on the received to-be-detected lamp state detection request, and lays a foundation for accurately adjusting the brightness of the to-be-detected lamp. In the case that the running state of the to-be-detected lamp is a normal running state and the to-be-detected lamp meets the brightness adjustment condition, the duty cycle of the PWM signal is adjusted to be lower or higher to make the brightness of the to-be-detected lamp brighter or dimmer, thereby solving the problem of invalid adjustment when the brightness of the to-be-detected lamp is adjusted, and realizing accurate adjustment of the to-be-detected lamp.

1. Name of the product in this design: Intelligent Dimmer (PLC). 2. Application of this design: This design is used for an intelligent dimmer for lighting control. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present invention discloses an optical device for a head-mounted display assembly for mounting on a user's head, the optical device being a side shield of the head-mounted display that alters the peripheral light entering the head-mounted display.

This utility model discloses a timed dimming switch, comprising an upper housing and a lower housing connected to each other. A control panel is installed in the lower housing, and a button plate is installed in the upper housing. The surface of the control panel is evenly provided with a plurality of control buttons, and the surface of the button plate is evenly provided with a plurality of press buttons. Each press button corresponds to and is in contact with one of the control buttons. The surface of the upper housing has evenly provided with a plurality of button through-holes, through which the press buttons extend. This utility model's timed dimming switch has a simple structure, employing a snap-fit ​​connection between the upper and lower housings. Internal positioning protrusions and fixing posts ensure a stable installation, improving the overall structural reliability. The control panel and button plate fit tightly, providing sensitive operation response, allowing users to easily achieve timed control and brightness adjustment functions.

This invention provides a lighting device that allows the use of existing equipment when converting to LED light sources, while also improving light distribution characteristics. [Solution] The LED lamp 10 of the lighting device 1 can utilize existing lighting fixtures 2 that use straight-tube fluorescent lamps, and is configured to distribute light in a circular direction around its axis, and can be dimmed to different brightness levels according to different time periods, with the brightness controlled to be dimmer in the second time period than in the first time period.

The utility model relates to lighting technical field discloses a kind of separating element adjusting circuit, including thyristor dimmer, constant-current voltage source, lamp panel and DIM TO WARM circuit, the constant-current voltage source is by NPN triode Q1 and NPN triode Q2, diode D1 and diode D2, resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 constitute, the NPN triode Q1 electrically connected with low-end light source LEDW, the NPN triode Q2 electrically connected with high-end light source LEDC.The utility model in the present application, by NPN triode, diode and resistance and other separating element constitute simple circuit, cooperate with multiple cool and warm light source, utilize triode alternate conduction and resistance voltage division, current limiting, realize the brightness linear gradual change of warm light to cold light and color temperature regulation, circuit structure is simple, low in cost, and is suitable for compact luminaire.

1. Name of the product in this design: Silicon Controlled Dimmer. 2. Purpose of this design: As a lighting controller, it has the functions of adjusting the brightness and color temperature of light. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

This application provides a dimming device and a dimming apparatus, belonging to the field of dimming technology. The dimming device includes: a dimming diaphragm having a first surface and a second surface facing away from each other, and a side surface connecting the first surface and the second surface; and a plurality of adhesives, each adhesive having one end disposed on the first surface and the other end extending from the side surface to the second surface; wherein adjacent adhesives partially overlap each other to form an overlapping portion. By continuously distributing the plurality of adhesives in the edge region, and by partially overlapping each other to form an overlapping portion, a continuous closed-loop sealing structure is formed in the edge region of the dimming diaphragm, thereby forming a complete seal of the edge region and preventing external moisture from entering the dimming diaphragm through the edge region, thus improving the service life of the dimming diaphragm.

The utility model discloses a kind of rotary control light modulation switch panels, it is related to switch panel technical field, including installation shell, quick release mechanism is arranged in the inside of installation shell, the quick release mechanism includes the fixed box of the inside fixed connection of installation shell, the inside hinged of fixed box has movable rod, the inside sliding connection of fixed box has self-locking block, the side of self-locking block is equipped with self-locking groove, the inside of self-locking groove and the upper end sliding connection of movable rod, the lower surface of self-locking block is fixedly connected with spring, the upper surface of self-locking block is hinged with limit buckle, the inside of limit buckle is clamped with buckle. The light modulation switch panel of the present application is used in cooperation by fixed box, movable rod, self-locking block, self-locking groove, spring, limit buckle and buckle, after the device is installed on wall, when needing to repair installation shell inside, staff can be conveniently disassembled, prevent shell from being damaged when disassembling, realize quick assembly.

The application discloses a control device, a control method, a medium, a controller and a system of an adjustable light device. The control device comprises a microcontroller and an adjustable voltage output module connected with the microcontroller. The microcontroller is configured to provide an analog adjustment signal of an output specified voltage to the adjustable voltage output module after receiving an external dimming instruction, and the adjustable voltage output module is configured to output a voltage based on the analog adjustment signal. The microcontroller is further configured to read the output voltage of the adjustable voltage output module, and when the output voltage of the adjustable voltage output module reaches the specified voltage, the microcontroller controls the adjustable voltage output module to output the voltage to the adjustable light device to drive the adjustable light device to dim. The application can effectively improve the dimming efficiency of the adjustable light device and meet the demand of high-power high-voltage driving.

Components and circuitry for controlling a bank of LEDs based on a dimmer switch and a CCT controller to maintain a brightness level while changing the color temperature of an emitted composite light, to adjust a brightness level simultaneous to changing the color temperature of the emitted composite light, and to drive the bank of LEDs to generate the composite light based on selection of one or more CCT setpoints of the CCT controller.

OCR06WT This invention reveals a dimmable power supply with an integrated dimmer consisting of a housing. The control panel is mounted inside the housing, and the multi-pole operating terminals are mounted on the housing of the control panel. Installation of electromagnetic compatibility module, switching power supply module, main control module, etc. Adjustable output and dimming control module; integration of the dimmer and dimming power supply. It not only reduces wiring but also offers the advantages of easy installation, a compact and small structure, and cost reduction. Furthermore, it features adjustable lighting and color functions and can be configured to meet CLA.ASSS2 standards. From the United States.

A dimming control system for adjusting the brightness of a light source is provided, comprising: a dimming control module configured to generate an internal dimming signal by performing signal amplitude conversion on an external dimming signal from a dimmer; a signal digitization module configured to generate a digital dimming signal by performing digitization processing on the internal dimming signal, wherein the digital dimming signal is a binary codeword containing multiple bits; a dimming curve module configured to generate a dimming information characterization signal containing dimming information by converting the digital dimming signal according to a predetermined dimming curve; and a constant current loop control module including a switching transistor configured to control the switching transistor from an on state to an off state based on the dimming information characterization signal, thereby performing constant current control on the output current flowing through the light source.

A two-wire lighting control device, may include a controllably conductive device, a signal generation circuit, and a filter circuit. The controllably conductive device may apply an AC line voltage to a load, being conductive for a first duration of time and non-conductive for a second duration of time within a half-cycle of the AC line voltage. The signal generation circuit may generate a non-zero-magnitude signal. And, the filter circuit may receive a signal from the controllably conductive device during the first duration of time and the non-zero-magnitude signal from the signal generation circuit during the second duration of time. The non-zero-magnitude signal may, in effect, fill-in or complement the signal from the controllably conductive device, and any delay variation as a function of the firing angle of the controllably conductive device through the filter circuit may be mitigated by the presence of the non-zero-magnitude signal.

This application provides a dimming mode detection circuit and lighting system, including a voltage detection module, a current detection module, and a mode judgment module. The voltage detection module acquires the bus voltage output from the SCR dimmer and generates a first detection signal characterizing the voltage edge characteristics. The current detection module acquires the discharge current flowing through the discharge current module and generates a second detection signal characterizing the duration of the discharge current being below a preset current threshold. The mode judgment module outputs a mode judgment signal based on the first and second detection signals to control the operating state of the discharge current module and the output driving strategy of the LED constant current drive module. By jointly analyzing the voltage and current signals, misjudgments caused by grid noise when relying solely on voltage detection are effectively avoided, significantly improving the accuracy and anti-interference capability of dimming mode recognition, thereby ensuring that subsequent circuits can operate reliably and efficiently in various grid environments.

The present disclosure relates to the technical field of liquid crystals, and discloses a liquid crystal dimming filter and a dimming device. The liquid crystal dimming filter comprises a first liquid crystal dimming functional layer and a second liquid crystal dimming functional layer. The first liquid crystal dimming functional layer comprises a first spacer layer, and the first spacer layer comprises a first spacer part. A light transmission part of the second liquid crystal dimming functional layer is arranged opposite to a light transmission part of the first liquid crystal dimming functional layer, and the second liquid crystal dimming functional layer is rotatably connected to the first liquid crystal dimming functional layer. The second liquid crystal dimming functional layer comprises a second spacer layer, and the second spacer layer comprises a second spacer part. The liquid crystal dimming filter has a wider adjustment range of light transmission rate, can be used as a dimmer or a starlight mirror, and expands the use range of the liquid crystal dimming filter.

This utility model discloses a multifunctional LED dimmer, which includes a dimming circuit board, a color temperature switching switch, a color temperature fine-tuning potentiometer, and multiple color temperature setting units disposed on the dimming circuit board. The dimming circuit board has a first connection terminal and a second connection terminal. The color temperature switching switch has multiple switching positions. The input terminal of each switching position of the color temperature switching switch is connected to the first connection terminal, and the output terminal of each switching position of the color temperature switching switch is respectively connected to the input terminal of each color temperature setting unit. The output terminal of each color temperature setting unit is connected to the movable contact of the color temperature fine-tuning potentiometer, and a fixed contact of the color temperature fine-tuning potentiometer is connected to the second connection terminal. The resistance values ​​of each color temperature setting unit are different. This utility model's multifunctional LED dimmer has a color temperature fine-tuning function, enabling different adjustable color temperature LED light sources to be adjusted to the same color temperature.

This invention provides an intelligent dimmable light that enables switching of light emission colors, eliminates the need for a separate remote control or dedicated control device, and contributes to reduced manufacturing costs and improved ease of use. [Solution] The intelligent dimming lamp 100 comprises a lamp body 10 having a light-emitting module 11 for providing a light-emitting source, a control circuit 12 provided inside the lamp body and electrically connected to the light-emitting module for controlling the light-emitting color of the light-emitting module, and a setting member 13 provided inside the lamp body and electrically connected to the control circuit for selectively switching the light-emitting mode of the light-emitting module between a color-changing mode and a fixed-color mode. When the setting member is set to the color-changing mode, the control circuit detects the energization and disconnection operations of a switch member S provided outside the lamp body and electrically connected to the control circuit, and sequentially switches the light emitted from the light-emitting module to another light-emitting color from a plurality of preset light-emitting colors. When the setting member is set to the fixed-color mode, the control circuit detects the energization and disconnection operations of the switch member and emits light of the selected preset light-emitting color from the light-emitting module.

This utility model relates to the field of thyristor dimming and color adjustment technology, and particularly to a thyristor dimming and color adjustment driving circuit, including an MCU main control unit, a compatible thyristor dimming unit, a color temperature switching unit, a wall-cut signal detection unit, and a thyristor dimmer status detection unit. The MCU main control unit is electrically connected to the compatible thyristor dimming unit, the color temperature switching unit, the wall-cut signal detection unit, and the thyristor dimmer status detection unit. The color temperature switching unit is electrically connected to the compatible thyristor dimming unit and the wall-cut signal detection unit. The thyristor dimmer status detection unit is electrically connected to the wall-cut signal detection unit. The wall-cut signal detection unit is used to detect the number of times the wall switch is turned on. The compatible thyristor dimming unit is electrically connected to an external dimmer to detect the dimmer's working status. This circuit design can achieve compatibility with traditional thyristor dimmers and can achieve diverse functions and color temperature adjustment through simple operation.

There is disclosed an optical device for a headset assembly which is for mounting to a head of a user, the optical device being a side shield for the headset which varies the peripheral light entering the headset.

The utility model discloses a kind of central control box applied to intelligent lighting control system, including box body and the power connector, dimmer power supply, gateway, executor and several lamp fittings connectors being set on box body;Dimmer power supply is connected with power connector;Gateway is connected with power connector;Executor is connected with power connector;Lamp fittings connector is connected with dimmer power supply;Through in advance completing the wiring work of communication line, power supply line between power connector, dimmer power supply, gateway, executor and lamp fittings connector in box body, the complex wiring operation brought by field dispersed installation equipment is avoided, reduces wiring error rate;Central control box is reserved standard port to outside, unifies the interface of various equipment, ensure compatibility and simplicity, reduce wiring error when installing;User only needs to connect power and connect controlled equipment through standard port, simplify the cumbersome step in traditional installation process, significantly reduce installation difficulty.

The present application relates to the technical field of PDLC dimming film, in particular to a black dichroic dye composition, a PDLC dimming film and a preparation method and application thereof. The black dichroic dye composition comprises the following dichroic dyes: yellow anthraquinone dichroic dye, red anthraquinone dichroic dye, purple anthraquinone dichroic dye and blue anthraquinone dichroic dye; the dye molecules of the dichroic dyes all contain at least one hydroxyl substituent. The dimming film prepared from the black dichroic dye composition has an on-state transmittance of 25-35%, an off-state transmittance of 1.0%-2.5%, a transmittance contrast (T on / T off ) of 15-25 under the conditions of a total dye concentration of 4.8-6.0 wt%, a device thickness of 20 μm and a driving voltage of 60 V, and meets the requirements of high-end dimming devices for high on-off contrast.

This invention relates to the field of electrical equipment cabinet technology, and discloses an airport navigation lighting wiring control cabinet based on a smart grid. The cabinet includes a main frame and multiple sets of navigation lighting series circuits. The main control unit and a combination transfer switch are electrically connected. The combination transfer switch is used to switch between standby and measurement states for the multiple sets of navigation lighting series circuits. A DC resistance detection unit is used for DC resistance testing of the navigation lighting series circuits, and an insulation resistance detection unit is used for insulation resistance testing of the navigation lighting series circuits. This airport navigation lighting wiring control cabinet can achieve rapid switching and high-speed detection of multiple navigation lighting series circuits. It can detect circuit insulation and DC resistance, archive and analyze historical data, predict circuit status, and switch between lighting circuits and emergency dimmers. It replaces traditional, cumbersome testing methods, efficiently completes circuit maintenance, and ensures airport navigation safety.

The present invention relates to the technical field of phase-cut control circuits, and specifically to a multifunctional new phase-cut control circuit and its implementation method. The multifunctional new type of phase-cut control circuit includes an input interface circuit, a signal detection circuit, a holding current control circuit, a current-limiting protection circuit and a control chip U1. Through multi-mode adaptive algorithms, intelligent detection and compensation, coordinated control and dynamic holding current adjustment, the present invention can maintain stable current compensation when controlling dimmers of different brands and models, improve dimming compatibility, ensure no flicker for low-power loads. Adapt to leading-edge phase-cutting and trailing-edge phase-cutting, and enhance dimming accuracy. Additionally, the circuit is simple and low in cost.