Abstract: The present disclosure provides a pixel driving circuit, a method for driving the pixel driving circuit, and a display panel. The pixel driving circuit includes: a driving circuit coupled to a first control signal terminal and a data signal terminal, and configured to generate a driving current based on a signal from the data signal terminal under control of a signal from the first control signal terminal; and a compensation circuit coupled to the first control signal terminal, a second control signal terminal, an output signal terminal, and the driving circuit, and configured to perform a threshold voltage compensation on the driving circuit and provide the driving current generated by the driving circuit to the output signal terminal, under control of a signal from a first control signal terminal and a signal from the second control signal terminal.

Abstract: A lamp including a light source having at least one string of light emitting diodes on a printed circuit board present within a tube body; and end caps having a G13 pin layout on each end of the tube body. The lamp may further include an electrical isolation switch mounted on at least one of the end caps, wherein the electrical isolation switch provides shock protection from the lamp when installed into a ballast free fixture. The lamp may further include driver electronics having a filament detector portion provided by a passive resistance capacitor (RC) circuit that simulates the filament load of a fluorescent lamp when installed into a ballast containing fixture.

Abstract: An LED light fixture, in the form of lamps or luminaires, is comprised on a plurality of LED lights producing bright white or warm light and a plurality of color LED lights producing light of a visibly different color. The fixture includes control circuitry for receiving an input voltage signal from a dimmer switch wherein when the dimmer switch reduces the input voltage to the LED light fixture within a top range setting of the dimmer switch, the brightness of the light is maintained while the color Kelvin temperature of the light spectrum is reduced. If the dimmer switch is increased in the top range, the color temperature increases. This is achieved by increasing the frequency of a reduced input voltage signal during a reduction of the dimmer switch in the top range thereof to supply full driver current to the white or warm light LED's while reducing the driver current to the color LED's.

Abstract: A light-emitting device includes an optical member including first and second light emitting elements, first and second light condenser portions, and a light guide portion. The first light condenser portion is disposed at a position corresponding to the first light-emitting element, and condenses a portion of light emitted from the first light-emitting element. The second light condenser portion surrounds the first light condenser portion, and condenses a portion of the light that is not incident to the first light condenser portion among the light emitted from the first light-emitting element. The light guide portion is disposed at a periphery of the second light condenser portion and at a position corresponding to the second light-emitting element, and guides light emitted from the second light-emitting element by causing total reflection in an interior of the light guide portion.

Abstract: A display element includes a light-emitting unit of a current drive type, and a drive unit that drives the light-emitting unit, in which the drive unit includes a capacitance unit, a drive transistor that causes a current corresponding to a voltage held by the capacitance unit to flow through the light-emitting unit, and a write transistor that writes a signal voltage to the capacitance unit, the drive transistor and the write transistor are formed in a state of being separated by an element isolation region, on a semiconductor substrate, and a capacitance generated in a portion where the drive transistor and the write transistor face each other through the element isolation region functions as at least a part of the capacitance unit.

Abstract: A lamp including a light source having at least one string of light emitting diodes on a printed circuit board present within a tube body; and end caps having a G13 pin layout on each end of the tube body. The lamp may further include an electrical isolation switch mounted on at least one of the end caps, wherein the electrical isolation switch provides shock protection from the lamp when installed into a ballast free fixture. The lamp may further include driver electronics having a filament detector portion provided by a passive resistance capacitor (RC) circuit that simulates the filament load of a fluorescent lamp when installed into a ballast containing fixture.

Abstract: An RF controlled lighting unit is provided, suitable for connection to at least one of a dimmer for adjusting a phase cut angle of input mains voltage in accordance with an adjustable dimming level or an electronic switch for selecting between on- and off-states. The lighting unit includes a solid state light source; a radio circuit for receiving a wireless control signal; a rectifier circuit for rectifying the input mains voltage received from the electronic switch or the dimmer; a first power converter for driving the solid state light source in response to the rectified input mains voltage and delivering power to the radio circuit; and a second power convertor for delivering power to the radio circuit when the rectified input mains voltage becomes inadequate for the first power converter due to the phase-cut angle of the rectified input mains voltage or the off-state of the electronic switch.

Abstract: An RF controlled lighting unit is provided, suitable for connection to at least one of a dimmer for adjusting a phase cut angle of input mains voltage in accordance with an adjustable dimming level or an electronic switch for selecting between on-and off-states. The lighting unit includes a solid state light source; a radio circuit for receiving a wireless control signal; a rectifier circuit for rectifying the input mains voltage received from the electronic switch or the dimmer; a first power converter for driving the solid state light source in response to the rectified input mains voltage and delivering power to the radio circuit; and a second power convertor for delivering power to the radio circuit when the rectified input mains voltage becomes inadequate for the first power converter due to the phase-cut angle of the rectified input mains voltage or the off-state of the electronic switch.

Abstract: A pixel driving circuit and a driving method thereof, and a display device are provided. The pixel driving circuit includes input module, compensation module, drive module, light emitting module and control signal input module. The input module is configured to transmit a signal of a data voltage terminal to the compensation module under control of first gate signal terminal. The compensation module is configured to compensate for a threshold voltage of the drive module under control of the input module and a threshold voltage control terminal. The drive module is configured to drive the light emitting module to emit light under control of first control signal terminal. The control signal input module is configured to transmit a signal of second voltage terminal or third voltage terminal to the first control signal terminal under control of second control signal terminal and third control signal terminal.

Abstract: A kit of parts (1) comprising an electric cable (3) comprising hermetically sealed electric conductors, a connection device (5) comprising a first (9a) and a second connection part (9b), the first and second connection part each comprising a cavity (12) in which a respective secondary conduction coil (14) is arranged and connected to respective electrical contacts. In a connected arrangement of the connection device and the electric cable, the wire is wound around both the first connection part in a first winding sense and around the second connection part in a second, opposite winding sense. Thus, a watertight electric connection between the cable and the connection device is established.

Abstract: An organic light emitting display device includes a display panel including data lines, scan lines, initialization lines, and a plurality of pixels, wherein a pixel of the pixels includes: a driving transistor including a gate electrode coupled to a first node, a first electrode coupled to a second node, and a second electrode coupled to a third node, the driving transistor configured to control an amount of a drain-to-source current of the driving transistor according to a voltage applied to the first node; an organic light emitting diode configured to emit light depending on the drain-to-source current of the driving transistor; a first transistor coupled between the second node and a data line of the data lines, the first transistor configured to be turned on by a scan signal applied to a scan line of the scan lines; a second transistor configured to initialize the first node by being turned on; and a first capacitor coupled between the first electrode and the second electrode of the second transistor.

Abstract: One gate driver includes an output node configured to be coupled to a gate line and to provide power to the gate line for driving thin-film transistor (TFT) gates of a display. An input node of the gate driver is configured to receive an input signal. The gate driver includes a first field-effect transistor (FET) having a gate, a drain, and a source. The drain may be coupled to the input node and the source may be coupled to the output node. The gate driver also includes a second FET having a gate, a drain, and a source. The drain may be coupled to the input node. The gate driver includes a capacitor having a first end coupled to the gates of the FETs and a second end coupled to the source of the second FET. Using the gate driver power consumption of the display may be reduced.

Abstract: The LED flash module includes: a module substrate (111); an energy device (18) arranged on the module substrate; an LED module (320) arranged on the module substrate, the LED module in which a plurality of LED block units (320a-320f) are arranged horizontally, the LED block units in which a plurality of LED elements emitting light using a power source supplied from the energy device are arranged vertically; an EDLC charger circuit (311) arranged on the module substrate, and configured to charge the energy device; and an LED driver control circuit (313) arranged on the module substrate, and configured to control light emission from the LED element, wherein a wire length from a plus terminal (321) of the power supply unit to the LED element and a wire length from the LED element to a minus terminal (322) of the power are substantially equivalent with respect to each LED element.

Abstract: An LED lamp with an integrated circuit, a rectifier, and a string of series-connected LEDs rectifies an incoming AC signal. The integrated circuit includes power switches that can separately and selectably short out a corresponding one of several groups of LEDs in an LED string across which the rectified AC signal is present. As the voltage across the string increases, the integrated circuit controls the power switches to increase the number of LEDs through which current flows, whereas as the voltage across the string decreases the integrated circuit controls the power switches to decrease the number of LEDs through which current flows. The flow of LED string current is broken to reduce flicker. Alternatively, a valley fill capacitor peaks LED current during the valleys of the incoming AC signal to reduce flicker. LED current is regulated to provide superior efficiency, reliability, power-factor correction, and lamp over-voltage, -current, and -temperature protection.

Abstract: A switched capacitor power converter comprising a set of at least two capacitors; an input for receiving an input voltage an output for outputting an output voltage different to the input voltage, a plurality of switches configured to arrange the set of capacitors into a plurality of different subcircuit arrangements between the input and output for converting the input voltage to the output voltage; wherein the set of capacitors is configured to adopt a first subcircuit arrangement in which the set is connected to the input, a second subcircuit arrangement different to the first subcircuit arrangement and a third subcircuit arrangement, different to the first and second arrangements, in which the set is connected to the output, the subcircuit arrangements configured such that each of the capacitors in the set acts as a floating capacitor.

Abstract: A sensing circuit for external compensation, a sensing method thereof and a display apparatus, the sensing circuit for external compensation comprises a differential amplifier (9), a first capacitor (4), a second capacitor (8) and an output voltage controlling circuit (10) for the first capacitor; a negative input terminal of the differential amplifier (9) is connected with a display panel (1), a positive input terminal thereof is connected with a reference voltage, and an output terminal thereof is connected with an output terminal of the output voltage controlling circuit (10) for the first capacitor; the output voltage controlling circuit (10) for the first capacitor is used for enabling an output voltage of the first capacitor (4) in a subsequent current integral stage to vary based on the reference voltage.

Abstract: An illumination device has LEDs, EDLCs for LED use, and a non-volatile memory for recording the difference between the color temperature and/or the illumination spectrum of LEDs and Xe gas. The unused charge in an EDLC is recovered by a power cell. Illumination strength is changed in accordance with the image pickup distance of a DSC. Illumination strength is changed in accordance with exposure time so that a fill-in ratio is maintained. The illumination strength of LEDs is gradually increased and then at the peak strength is suddenly reduced. The mixture ratio of light from LEDs having different light distributions is changed due to focal distance, and then an incidence angle is changed. A group of LEDs is disposed in a ring shape on the front of a lens. During continuous capture, LEDs are caused to illuminate continuously or synchronously.

Abstract: An LED light unit, in particular for a passenger transport vehicle, such as an aircraft, a road vehicle, a ship or a rail car, is disclosed that has at least one LED and is configured to be used with a high intensity discharge lamp power supply that is adapted to monitor its output behavior. The LED light unit comprises a power input coupleable to the high intensity discharge lamp power supply, a capacitor switchably coupled to the power input for absorbing electrical energy from the high intensity discharge lamp power supply, and a power dissipating element switchably coupled to the power input for dissipating electrical energy from the high intensity discharge lamp power supply.

Abstract: A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a rectifier for rectifying an alternating current (AC) voltage to supply a ripple voltage, a light emitting unit partitioned into two or more groups, each of the groups including a plurality of LEDs, and a driving controller for selectively driving one or more of the groups of the light emitting unit depending on a level of the ripple voltage, the driving controller driving at least one of the groups of the light emitting unit using current discharged from a capacitor connected with the at least one group when the ripple voltage is lower than an operating voltage of the light emitting unit.

Abstract: To power and control multiple different electronic circuit nodes, this document introduces a single-wire multiple-circuit power and control system. Specifically, individually controlled circuit node units are arranged in a series configuration that is driven by a power and control unit located at the head of the series. Each of the individually controlled circuit node units may comprise more than one output circuit that is also individually controllable. The head-end power and control unit provides both electrical power and control signals down a single wire to drive all of the individual circuit node units in the series in a manner that allows each individual circuit node unit to be controlled individually or in assigned groups.

Abstract: A lighting apparatus includes at least one light emitting diode (LED) and a passive resonant converter circuit having an output coupled to the at least one LED and an input configured to be coupled to a ballast that produces an AC output. The passive resonant converter circuit may include a combination of a passive rectifier circuit, such as a passive diode bridge, and a resonant circuit, such as a CL resonant circuit. An input of the passive rectifier circuit may be configured to be coupled to the ballast and the resonant circuit and the at least one LED may be coupled to an output of the passive rectifier circuit. At least a portion of the passive resonant converter may be packaged with the at least one LED in a lamp and all or a portion of the passive resonant converter circuit may be packaged as a module or other unit for use with a lamp.

Abstract: A lighting apparatus includes a first LED unit and a second LED unit configured to provide different color temperatures. A pulse/voltage conversion circuit is connected between a power supply line and a low-potential side reference line, and configured to convert the pulses of input electric power into a voltage. A voltage dividing circuit is connected between the output terminal of the pulse/voltage conversion circuit and the low-potential side reference line, and configured to divide the voltage converted by the pulse/voltage conversion circuit. The dividing node of the voltage dividing circuit and the low-potential side terminal of the second LED unit are connected.

Abstract: The present invention provides a pixel unit driving circuit, a driving method and a display device. Wherein, the circuit comprises four TFT transistors and two capacitors. The display process is divided into three processes, which are a pre-charging phase, a compensation phase and a display phase. As compared with the conventional pixel structure, the nonuniformity and the shift of the threshold voltage of the depleted TFT or the enhanced TFT driving transistor, and the nonuniformity of the OLED voltage may be effectively compensated.

Abstract: A pixel unit driving circuit, a pixel unit and a display device, wherein said pixel unit driving circuit of the pixel unit comprises a switching unit (201) having a first terminal connected to a high-voltage signal terminal (Vdd), a second terminal connected to a light-emitting device (OLED), a third terminal connected to a first control line (CN1), and a fourth terminal connected to a second control line (CN2); a driving transistor (T1) having a drain connected to the switching unit (201), and a source connected to a low-voltage signal terminal (Vss); and a capacitance storage unit (202) having a first terminal connected to the gate of the driving transistor (T1), a second terminal connected to the source of the driving transistor (T1), and a third terminal connected to the second control line (CN2).

Abstract: An LED lamp control circuit directly drives an array of series or parallel connected LEDs with current directly derived from the rectified AC voltage. Electrolytic capacitors are eliminated, and the circuit is independent of forward bias voltage of the LEDs, which vary by lot and manufacturer. For example, in an embodiment, an light-emitting diode (LED) lamp control circuit includes a transistor, an LED load comprising one or more LEDs, a power storage device configured to provide power to the LED load, and a controller circuit configured to control the transistor to charge and discharge the power storage device based on sensed voltages of a first node and a second node and a current passing through the power storage device. The power storage device and the LED load are arranged in parallel between the first node and the second node. A voltage source is coupled to the first node and a first terminal of the transistor is coupled to the second node. A second terminal of the transistor is coupled to ground.

Abstract: A light-emitting element includes a light-emitting section and a driving circuit that drives the light-emitting section. The driving circuit includes at least (A) a drive transistor that is a p-channel field effect transistor, (B) an image-signal writing transistor that is a p-channel field effect transistor, (C) a light-emission control transistor that is a p-channel field effect transistor, and (D) a capacitor. Each of the drive transistor, image-signal writing transistor, and light-emission control transistor is provided in an n-type well formed in a p-type silicon semiconductor substrate. A first source/drain region of the drive transistor is electrically connected to the n-type well in which the drive transistor is formed.

Abstract: The invention provides integrated power supplies, circuit drivers, and control methods for relatively high-current drivers, usable with common battery power sources. Preferred embodiments include one or more high series resistance super-capacitors electrically connected with a power. A low resistance driver circuit regulates power supplied from the super-capacitors to the load.

Abstract: Disclosed is a pixel circuit which facilitates to compensate a threshold voltage of a driving transistor for controlling an operation state of a light emitting device, and a method for driving thereof and an organic light emitting display device using the same, wherein the pixel circuit includes a light emitting device including an organic light emitting cell; a driving transistor which controls an operation of the light emitting device according to a voltage applied between gate and source terminals; a capacitor including first and second terminals; a switching unit which initializes the capacitor during a current horizontal period, stores a sampling voltage in the capacitor, and makes the light emitting device emit light on the basis of the sampling voltage stored in the capacitor whenever the data voltage and reference voltage are supplied to the data line after the current horizontal period.

Abstract: Disclosed is a power supply device including a wired controller receiving AC power to generate a driving voltage, and outputting a lighting driving signal, a wireless controller wirelessly receiving a lighting control signal and outputting the lighting control signal to the wired controller, and a standby power supply unit receiving a reference standby voltage based on the driving voltage, storing the reference standby voltage, and supplying the reference standby voltage to the wireless controller as standby power. In the lighting control device based on wired/wireless communication, the power is always obtained from the super capacitor to turn on the wireless controller, so that the turn-on state of the power generator of the wired controller is not always required. The power consumption is reduced by reducing the standby power.

Abstract: Polyphase alternating current power with a phase difference, or direct current power rectified from polyphase alternating current power, is used to drive a common electric energy-driven luminous body, or to separately drive proximately installed individual electric energy-driven luminous bodies, so that alternating-current-induced pulsation in the light output of the luminous bodies is reduced.

Abstract: An electronic system includes a controller that actively controls a rate of charging and discharging of an energy storage capacitor to maintain compatibility with a dimmer. The controller actively controls charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit. The controller further allows the capacitor to discharge to obtain a second voltage level across the capacitor circuit. The second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting. The first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage.

Abstract: A low-temperature LED lighting and power supply device has a low power-consuming power supply control module and an LED lighting module electrically connected therewith. The LED lighting module is composed of at least one light source driver and an LED light source. The low power-consuming power supply control module at least has a surge suppression unit, a voltage-dividing-limiting unit, a current-limiting unit, and a steady voltage filtering unit. Accordingly, the present invention allows LED lighting equipment to be applied in a wider power supply range and operated under a low-temperature and low power-consuming state so as to meet economic and practical demands and environmental protection.

Abstract: An apparatus and method for reducing the perception of flicker of solid state light sources. An alternating current (AC) signal is passed through an AC conditioning circuit and a passive resonating circuit before being supplied to a string of solid state light sources, such as light emitting diodes.

Abstract: A system and method for emulating a gas discharge lamp comprising an input arranged to direct electric current from a lamp ballast to a delay circuit, wherein the delay circuit is arranged to establish an electrical communication between the lamp ballast and an electric lamp when a predetermined condition associated with one or more characteristics of the gas discharge lamp is attained.

Abstract: The invention relates to an LED light tube and a circuit module for the same, wherein the circuit is located in a light tube body and includes a rectifying unit, a current regulating and voltage regulating unit, and an LED unit. The light tube body can be installed in a lamp-holder of a fluorescent tube without changing a starter and a ballast. The rectifying unit has two power terminals connected to electrodes of the light tube body for receiving a mains power and the rectifying unit via the electrodes. The rectifying unit converts the mains power to a sign wave DC voltage. The current regulating and voltage regulating unit is connected to the rectifying unit for converting the mains power to a working power. The LED unit is electrically connected to the current regulating and voltage regulating unit for receiving the working power to emit light.

Abstract: The invention discloses an LED backlight drive circuit, an LCD device and a driving method. The LED backlight drive circuit includes a power source; an output capacitor and an LED lightbar which is connected in series with a first controllable switch are in parallel connection, and then are arranged between the output terminal and the ground terminal of the power source. The LED backlight drive circuit further includes a first comparator; a cathode of the first comparator is connected to a first reference voltage, an anode of the first comparator is coupled with the output terminal of the power source, and the output terminal of the first comparator is coupled with a control end of the first controllable switch; when the anode voltage of the first comparator exceeds the cathode voltage, the output terminal of the first comparator drives the first controllable switch to be conducted. In the invention, the LED lightbar only can be conducted at the predetermined voltage.

Abstract: The present document relates to providing power for driving SSL devices. A power converter converts a varying input voltage to supply an output voltage to a SSL device in series with a current source. The power converter comprises one or more capacitors; a plurality of switches to couple the capacitors in a plurality of configurations. A control unit operates the power converter in a plurality of operational modes providing a corresponding plurality of different conversion ratios between the input/output voltages. The operational modes comprise a first phase and a second phase, during which the capacitors are differently arranged. The control unit controls the switches to alternate between the phases at a commutation cycle rate. The control unit sets the operational mode based on the varying input voltage.

Abstract: A light emitting device including a light emitting component is provided, wherein said light emitting comprising an integrated light emitting diode and a semiconductor field effect transistor. The semiconductor field effect transistor may prevent situations such as overheating and voltage instability by controlling a current passing through the light emitting diode as well as enhancing the ability to withstand electrostatic discharge and reducing cost of the light emitting device in multiple aspects.

Abstract: An LED flash module includes: a module substrate; an energy device disposed on the module substrate; an LED module arranged on the module substrate includes a plurality of LED blocks arranged in a first direction, each LED block including a plurality of LED elements which is arranged in a second direction perpendicular to the first direction and emits light with power supplied from the energy device; a charger circuit arranged on the module substrate to charge the energy device; and a control circuit arranged on the module substrate to control emission of LED elements. A wiring length from one of the LED elements to a plus terminal of a power supply portion supplying power to each of the LED elements and a wiring length from the one of the LED elements to a minus terminal of the power supply portion is substantially the same for all of the LED elements.

Abstract: A system, method and circuit for providing constant current to an LED array are described herein. These include a resistor coupled to the LED array and a thermistor coupled to the LED array and the resistor. The resistor and the thermistor limit the current at a given temperature and compensate for the forward voltage shift of the LED array as a function of temperature. The system, method and integrated circuit may also include a fuse coupled to the thermistor. The fuse allows the system to continue to operate if a single LED within the LED array fails to short-circuit.

Abstract: A multiplier circuit for a voltage Vdc applied to a first input of the circuit, comprising: a first capacitor and a second capacitor; a coupler that in a first state, can electrically couple a first terminal of each capacitor to a zero electrical potential and a second terminal of each capacitor to an electrical potential equal to Vdc, and in a second state can electrically couple the first terminal of the first capacitor to the electrical potential Vdc, the second terminal of the second capacitor to the zero electrical potential, the second terminal of the first capacitor to a first output terminal and the first terminal of the second capacitor to a second output terminal; a controller capable of controlling the change from one state to another.

Abstract: Direct current circuits always require a voltage source consisting of a positive voltage and a ground. To power a plurality of a direct current circuit nodes one must traditionally supply a power supply line and a ground line to each circuit node. To simplify wiring, a single conductor system of powering a plurality of circuit nodes is disclosed wherein each circuit node has only two external connections and the circuit nodes are coupled in series. Specifically, each individual circuit node has an integrated circuit and a capacitor. A power circuit within the integrated circuit then directs current from an input into the capacitor to create a local power supply and shunts current from the input to an output when not directing current into the capacitor.

Abstract: A display device includes an anode electrode provided for each pixel, an opening insulation film which covers the periphery of the anode electrode and which defines an pixel opening, and a storage capacitor disposed below the anode electrode through a planarizing insulation film, having a function to store charge for driving a pixel, and including capacitor electrodes wider than the pixel opening.

Abstract: The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.

Abstract: A light-emitting element driver circuit is disclosed in embodiment of the invention. The light-emitting element driver circuit includes a driver unit for generating a driving current to the light-emitting element; a data storage unit for storing a threshold voltage of the driver unit and current data signal voltage; and a control unit being controlled to be conducted during a light emitting period so that the driver unit generates a driving current in response to the threshold voltage and current data signal voltage stored in the data storage unit.

Abstract: A low THD lighting system is disclosed. The lighting system includes a first lighting module and a second lighting module connected parallel to the first lighting module. During each AC cycle the first lighting module conducts current for a first portion of the cycle and the second lighting module conducts current for a second portion of the cycle. When combined, the total current drawn from the power source substantially tracks the shape of the applied AC voltage. Accordingly, there is minimal distortion, and low total harmonic distortion level is achieved.

Abstract: An electronic lighting system and method described herein control energy provided to an electronic lighting device, such as one or more light-emitting diodes (LEDs) and/or compact fluorescent lamps (CELs), of the electronic lighting system. A triac-based dimmer phase cuts a line voltage provided to the electronic lighting system. A controller of the electronic lighting system utilizes a probing system to overcome idiosyncrasies of the triac-based dimmer to allow the controller to probe and sense the line voltage. To reduce energy consumption, rather than probing each cycle of the output voltage of the triac-based dimmer, the controller periodically or intermittently probes the output voltage of the triac-based dimmer.

Abstract: The current inventive technology relates to methods and apparatus for a providing an energy efficient and durable landscape lamp. The lamp can retract when not in use to prevent damage. The high efficiency retractable landscape lamp of this invention may be powered by conventional distributed low voltage or by a solar photovoltaic (PV) source. In some embodiments the lamp may be powered by low voltage, it may be individually interchangeable with a conventional low voltage landscape lamp or may be installed in a low voltage lighting complete system. This lamp may house the electrical components and gearmotor in an upper dry compartment making it reliable in outdoor installations, even in wet environments. This invention can also relate to operation without the need for unreliable limit switches for the raising and lowering of the lamp.

Abstract: A trigger circuit (10) comprises a switch member (SW1) connected in series with a high-ohmic resistive element (R1), the junction between the switch member and the resistor element being connected via a capacitor (C1) to the input of a circuit (20) to be triggered. The circuit (20) operates a light-emitting source (130, FIG. 3). The switch (SW1) can be a user-operated switch, a tilt switch (100, FIG. 2) or can be a comparator (124) responsive to an external factor e.g. incoming vibrations.

Abstract: A lighting battery relates to a cylindrical rechargeable battery. The lighting battery comprises a battery body, a driving circuit, a switch and light-emitting diodes, wherein the switch is an inching switch, and the driving circuit has a trigger pin which is connected to the switch whereby a trigger signal is acquired to control the driving circuit operate or stop. The power pin and grounding pin of the driving circuit is respectively connected to the positive pole and the negative pole of the battery body, as well as the output pin of the driving circuit is connected to the light-emitting diodes.