Class / Patent application number | Description | Number of patent applications / Date published |
315205000 | Plural discharge devices and/or rectifiers in the supply circuit | 40 |
20100033099 | THREE-LEVEL DIMMING CIRCUIT FOR DISCHARGING LAMP - A three-level dimming circuit for a discharging lamp includes a first contact, a second contact, and a third contact, a first full-wave rectification circuit connected to the first contact and the third contact, and a second full-wave rectification circuit connected to the first contact and the second contact. A selection circuit includes three resistors and a first electrical controlled switch. A half-wave rectification circuit includes a second electrical controlled switch and a third electrical controlled switch in series connection. The three resistors of the election circuit are the main devices for dimming that the present invention has a lower cost and superior competition in the market. | 02-11-2010 |
20100066259 | Circuit Arrangement and Method for Igniting a High-Pressure Discharge Lamp - A circuit arrangement for starting a high-pressure discharge lamp (LA), having a main combustion chamber (HaBk) with a first and a second main electrode (HaE | 03-18-2010 |
20120025726 | REVERSED-POLARITY PULSE GENERATING CIRCUIT FOR DIRECT CURRENT PLASMA AND DIRECT CURRENT PLASMA POWER SUPPLY UNIT - A capacitor is connected between direct current voltage terminals, and inductance means is connected between one end of the capacitor and one of load terminals. In a case in which the direct current voltage exceeds a set value, voltage at both ends of the capacitor is shared by the first and second switching elements that are not electrically conductive; in a case in which the direct current voltage is below the set value, the first and second switching elements are electrically conductive on a periodic basis or as needed to output reversed-polarity voltage between load terminals; and in a case in which the first and second switching elements are turned off, voltage at both ends of the capacitor restricts voltage applied to both ends of the first and second switching elements, during a period in which the first and second feedback rectifier elements are electrically conductive. | 02-02-2012 |
20120062134 | DRIVING CIRCUIT FOR T8 LED LAMP - A driving circuit for a T8 light-emitting diode (LED) lamp mainly includes two bridge rectifiers. According to the electrical characteristics and the circuit designs of the bridge rectifiers, the T8 LED lamp can be driven to illuminate by the driving circuit while a starter needs not be removed from the T8 lamp holder. | 03-15-2012 |
20120139432 | VOLTAGE DETECTION MODULE - The voltage detection module according to the invention comprises: a first electric terminal; a second ground terminal; a load resistor, connected to the first electric terminal; a main gas-filled spark gap, arranged in series between the load resistor and the second terminal; and a main capacitor, connected, on the one hand, to a first middle point situated between the load resistor and the main gas-filled spark gap and, on the other hand, to the second terminal. The voltage detection module also comprises a light source connected in series between the main gas-filled spark gap and the second terminal, the light source and the main gas-filled spark gap being separate from one another. The voltage detection module comprises an additional stage capable of limiting the voltage applied to the terminals of the gas-filled spark gap to a threshold voltage chosen so as to prevent the gas-filled spark gap from always being on. | 06-07-2012 |
20120229042 | INVERTER FOR CONTROLLING BACKLIGHT USING VARIABLE FREQUENCY OSCILLATOR - There is provided an inverter for controlling a backlight using a variable frequency oscillator, the inverter including: a variable frequency oscillator generating a reference waveform having a variable frequency through voltage charged in a first capacitor and voltage discharged therefrom by a current; and a main switching signal generator generating a switching signal for driving a plurality of lamps based on a first error voltage between output voltages corresponding to currents flowing in the lamps and a first reference voltage and the reference waveform, whereby damage of circuit elements such as the lamps, or the like, may be prevented and the brightness of the lamps may be constantly maintained. | 09-13-2012 |
20120256553 | SCR DIMMING CIRCUIT AND METHOD - The present invention relates to an SCR dimming circuit and method for regulating the luminance of an LED load. In one embodiment, an SCR dimming circuit can include: an SCR element that generates a lack-phase AC voltage based on a sinusoidal AC supply; a rectifier bridge that generates a lack-phase DC voltage based on the lack-phase AC voltage; a conduction angle generator that receives the lack-phase DC voltage, and generates a controlling signal representative of a conduction angle of the SCR element; and a dimming signal generator that generates a dimming signal to regulate luminance of the LED load, where the dimming signal generator receives the controlling signal, an adjustable signal, and a clamping voltage, an amplitude of a dimming phase angle range is selected by a fixed signal determined by the clamping voltage, and the dimming phase angle range may be shifted by regulating the adjustable signal. | 10-11-2012 |
20120319606 | FLUORESCENT TUBE DRIVING DEVICE - A fluorescent tube driving device including a first voltage converter, a second voltage converter, an oscillating unit, an inverter, an adjusting unit, a switching unit and a voltage stabilizing unit is provided. The first and the second voltage converters convert an alternating-current (AC) voltage to a first direct-current (DC) voltage and a second DC voltage. The oscillating unit is charged by the first DC voltage to generate a charging voltage and a trigger signal. The adjusting unit is charged by the charging voltage to generate a power supply signal. The switching unit transmits the second DC voltage according to the power supply signal. The voltage stabilizing unit stabilizes the voltage from the switching unit. Both of the oscillating unit and the adjusting unit are charged at a delay speed to synchronously transmit the operation voltage and the trigger signal to a controller in the inverter. | 12-20-2012 |
20130069551 | Switching Power Supply, Luminaire, and Control Method for the Luminaire - A switching power supply includes a transformer, a resonant capacitor, a pair of switching elements, an inductor, and a rectifying element. The transformer includes a first winding, a second winding, and a third winding. The resonant capacitor is connected to both ends of the first winding. The switching elements are normally-on elements and alternately turned off according to a voltage induced in the third winding. Each of the switching elements includes a first main terminal, a second main terminal, and a control terminal. The inductor supplies a direct-current power supply voltage between the middle point of the first winding and the each first main terminal of the switching elements. The rectifying element rectify a voltage induced in the second winding. | 03-21-2013 |
20130141000 | PIEZOELECTRIC RESONATOR LIGHT-EMITTING-DIODE (LED) DRIVING CIRCUIT - A piezoelectric resonant LED driving circuit, wherein a rectifier is used to rectify an AC voltage provided by the supply main into a DC voltage. Then, a quasi-resonant switching module performs resonance by means of the DC voltage to produce an induced current, to raise resonance frequency to operation frequency of a piezoelectric oscillator. Finally, the piezoelectric oscillator performs resonance and filtering using the induced current, to generate a sine wave current. Then, the sine wave current is rectified to output a DC current to drive an LED module. | 06-06-2013 |
20130234616 | POWER SUPPLY FOR LIGHTING AND LUMINAIRE - According to one embodiment, a power supply for lighting includes a rectifying circuit, a smoothing capacitor, and a current control circuit. The rectifying circuit rectifies a phase-controlled alternating-current voltage supplied to between a pair of input terminals. The smoothing capacitor is connected to a high-potential terminal and a low-potential terminal of the rectifying circuit. A first electric current flows to the current control circuit in a period when an absolute value of the alternating-current voltage is lower than a specified value. After a second electric current larger than the first electric current flows when the absolute value of the alternating-current voltage increases to be equal to or larger than the specified value, the current control circuit is shut off to reduce a current value to be smaller than the second electric current until the absolute value of the alternating-current voltage decreases to be lower than the specified value. | 09-12-2013 |
20130249427 | LIGHT DRIVING APPARATUS AND METHOD THEREOF - A light driving apparatus includes a first rectifying unit for receiving AC power and rectifying the AC power into DC, a switching element controlled to turn on or off by a control signal, a transforming unit having a transformer and an inductor connected to a primary side of the transformer in parallel, a second rectifying unit for rectifying a secondary side output of the transforming unit and supplying an output voltage thereof to a LED unit, and a control unit provided in the primary side to give a constant-current control function so that a secondary side output is maintained consistently. According to the present disclosure, it is possible to simplify the circuit structure of the secondary side and improve the efficiency by controlling the secondary side current at the primary side without secondary side feedback information. | 09-26-2013 |
20130320873 | SENSING DEVICE, SENSING CHARGER AND SENSING EMERGENCY LAMP - A sensing device includes a sensing transmitting module and a sensing receiving module respectively mounted in a first housing and a second housing. And an output terminal of the sensing transmitting module and an input terminal of the sensing receiving module are provided with a sensing coil and an electromagnetic rod respectively, the first housing and the second housings are cooperated with each other, and the electromagnetic rod is inserted into the sensing coil, so that the sensing coil or the electromagnetic rod is placed in magnetic field generated by the electromagnetic rod or the sensing coil thereby generating sensing voltage. The sensing parts are formed of the sensing coil and the electromagnetic rod, which significantly reduces the amount of the copper wires in the sensing coil and the electromagnetic rod, therefore the sensing device has a smaller size, lighter weight and lower cost. | 12-05-2013 |
20140009076 | STRAIGHT TUBE LED ILLUMINATION LAMP - This straight tube LED illumination lamp includes the following: an LED element; a first plug having an input-output terminal and an empty terminal; a second plug having an input-output terminal and an empty terminal; a first rectifier that is connected to the input-output terminal of the first plug and the empty terminal of the second plug in order to convert alternating current to direct current; a second rectifier that is connected to the input-output terminal of the second plug and the empty terminal of the first plug in order to convert alternating current to direct current; and a bypass circuit through which current is flown back from either the first or second rectifier to the other rectifier. The bypass circuit has a current-limiting resistor to prevent the first and second rectifiers from being damaged. | 01-09-2014 |
20140049175 | POWER SUPPLY CIRCUIT FOR A PFC CONVERTER - A PFC converter ( | 02-20-2014 |
20140062324 | SIGNAL DETECTION CIRCUIT, IGNITER, AND VEHICLE USING THE SAME - There are provided a signal detection circuit and an igniter capable of enhancing a capability of withstanding breakdown by noise. The signal detection circuit includes an input terminal Sin configured to receive a control signal from an ECU and a bidirectional floating diode provided between the input terminal and a ground. Further, the signal detection circuit includes an attenuation circuit configured to attenuate an output of the bidirectional floating diode, a low-pass filter configured to pass a low-frequency component of the output of the attenuation circuit, and a comparator configured to compare an output of the low-pass filter with a reference voltage. | 03-06-2014 |
20140062325 | SCR DIMMING CIRCUIT AND METHOD - The present invention relates to a silicon-controlled rectifier (SCR) dimming circuit and method for regulating the luminance of a light-emitting diode (LED) load. In one embodiment, an SCR dimming circuit can include: an SCR rectifying circuit having an SCR element that receives an AC power supply, and generates a lack-phase AC voltage; a rectifier bridge that converts the lack-phase AC voltage to a lack-phase DC voltage, where the lack-phase DC voltage is filtered through a filter capacitor to generate a smooth DC voltage; a conduction phase angle signal generator that receives the lack-phase DC voltage and generates a controlling signal indicating a conduction phase angle range of the SCR element; and a dimming signal generator that compares the controlling signal and a slope reference signal to output a dimming signal to control the luminance of the LED load. | 03-06-2014 |
20140077716 | POWER SUPPLY DEVICE FOR LIGHTING AND LUMINAIRE - In a power supply device | 03-20-2014 |
20140139128 | DIRECT CURRENT CONVERSION CIRCUIT - A direct current (DC) conversion circuit suitable for driving a load comprises a buck-boost converter, a resonant stage circuit and an output stage circuit. The buck-boost converter has two input ends receiving a first DC signal, and two output ends outputting a second DC signal. The resonant stage circuit has two input ends receiving the second DC signal. The resonant stage circuit converts the second DC signal to energy and further converts the energy to a negative voltage by a resonance effect. The resonant stage circuit has two input ends outputting the energy. The output stage circuit has two input ends receiving the energy to store the energy, and two output ends outputting energy to the load. | 05-22-2014 |
20140159608 | DRIVER CIRCUIT FOR DIMMABLE SOLID STATE LIGHT SOURCES WITH FILTERING AND PROTECTIVE ISOLATION - A driver circuit for a lamp assembly including one or more solid state light sources is provided. The driver circuit includes filtering and power factor correction with protective isolation. The driver circuit includes a transformer with electrically isolated windings and a power factor correction circuit that receives no feedback from a secondary winding of the transformer. | 06-12-2014 |
20140239834 | LED LIGHTING DEVICE USING BALLAST - An LED lighting device using a ballast may be provided that includes: an LED unit which includes at least one LED device; a rectifier which rectifies a current power signal output from the ballast; and a current driving unit which receives an output current of the rectifier and controls the power which is transmitted from the ballast to the LED unit. The current driving unit transmits current which has a magnitude greater than that of the output current of the rectifier to the LED unit. | 08-28-2014 |
20140239835 | SCR DIMMING CIRCUIT AND METHOD - The present invention relates to an SCR dimming circuit and method for regulating the luminance of an LED load. In one embodiment, an SCR dimming circuit can include: an SCR element that generates a lack-phase AC voltage based on a sinusoidal AC supply; a rectifier bridge that generates a lack-phase DC voltage based on the lack-phase AC voltage; a conduction angle generator that receives the lack-phase DC voltage, and generates a controlling signal representative of a conduction angle of the SCR element; and a dimming signal generator that generates a dimming signal to regulate luminance of the LED load, where the dimming signal generator receives the controlling signal, an adjustable signal, and a clamping voltage, an amplitude of a dimming phase angle range is selected by a fixed signal determined by the clamping voltage, and the dimming phase angle range may be shifted by regulating the adjustable signal. | 08-28-2014 |
20140246987 | CONSTANT CURRENT DRIVE FOR LED LIGHT SOURCE - Disclosed is a constant current drive for an LED light source, including a main power supply loop and at least one backup power supply loop. The main power supply loop at least includes a power conversion circuit. The power conversion circuit outputs a constant current to an LED light source. The backup power supply loop at least includes a power conversion backup circuit. The power conversion backup circuit outputs a constant current to the LED light source. When the power conversion circuit and the power conversion backup circuit operate normally, any one thereof operates in a nominal state or a derating state, and the output ends thereof are connected in parallel and then supply power to the LED light source simultaneously. When any one of the power conversion circuit and the power conversion backup circuit is invalid, the invalid circuit will not affect the normal operation of the remaining circuit. The constant current drive for an LED light source in the present invention can improve the reliability of the constant current drive for an LED light source due to having a backup power supply loop. | 09-04-2014 |
20140327369 | THREE-LEVEL LED BULB MICROPROCESSOR-BASED DRIVER - An LED bulb is described, comprising LEDs within a shell and a driver circuit to operate the LEDs at a plurality of brightness levels. The driver circuit comprises first and second inputs to receive AC, a neutral input, a converter circuit, first and second rectifier circuits, a detector circuit, and a processing circuit. The first rectifier circuit is connected to the first and neutral inputs and rectifies the AC received. The second rectifier circuit is connected to the second and neutral inputs and rectifies the AC received. The detector circuit is connected to the first and second rectifier circuits. The processing circuit has a first and a second processor input, and is connected to the detector circuit. The processing circuit produces a chop signal with a duty cycle based on whether the first or second input is hot. The converter circuit powers the LEDs based on the chop signal. | 11-06-2014 |
20140361703 | LED LIGHTING CONVERTER - A method and apparatus for light emitting diode (LED) lighting power conversion including a full bridge rectifier circuit coupled to a first half-bridge rectifier circuit and a resonant tank circuit supplying AC power to a LED circuit and forming a first port to the LED circuit. The apparatus further includes a second half-bridge rectifier circuit and energy storage device receiving and supplying DC power to the LED circuit as determined by a controller to form a second port of the LED circuit, wherein the LED circuit further comprises a rectifier circuit for the LED circuit, and at least one LED. | 12-11-2014 |
20150015154 | LIGHT-EMITTING DIODE LIGHT TUBE DRIVING CIRCUIT - A light-emitting diode (LED) light tube driving circuit includes a LED driver and a rectifier unit. The LED driver is configured for receiving an operating voltage to drive at least one LED. The rectifier unit has a first input/output terminal and a second input/output terminal and is electrically coupled to an external alternating-current power source selectively by the first input/output terminal and the second input/output terminal. The rectifier unit is configured for providing the operating voltage to the LED driver. The rectifier unit further includes a first rectifier diode and a second rectifier diode. | 01-15-2015 |
20150077005 | THREE-LEVEL LED BULB MICROPROCESSOR-BASED DRIVER - An LED bulb is described, comprising LEDs within a shell and a driver circuit to operate the LEDs at a plurality of brightness levels. The driver circuit comprises first and second inputs to receive AC, a neutral input, a converter circuit, first and second rectifier circuits, a detector circuit, and a processing circuit. The first rectifier circuit is connected to the first and neutral inputs and rectifies the AC received. The second rectifier circuit is connected to the second and neutral inputs and rectifies the AC received. The detector circuit is connected to the first and second rectifier circuits. The processing circuit has a first and a second processor input, and is connected to the detector circuit. The processing circuit produces a chop signal with a duty cycle based on whether the first or second input is hot. The converter circuit powers the LEDs based on the chop signal. | 03-19-2015 |
20150091465 | Power Supply Circuit and Luminaire - A power supply circuit includes a rectifying circuit, a power-factor improving circuit, a bridge circuit, a transformer, a rectifying and smoothing circuit, first and second drivers, a power supply section, and a control section. The rectifying circuit converts an alternating-current input voltage into a rectified voltage. The power-factor improving circuit improves a power factor of the rectified voltage and converts the rectified voltage into a direct-current voltage. The bridge circuit converts the direct-current voltage into an alternating-current voltage. The rectifying and smoothing circuit converts the alternating-current voltage into a direct-current output voltage. The first driver controls a switching element. The second driver controls the power-factor improving circuit. The power supply section converts the direct-current voltage into a driving voltage corresponding to the first and second drivers. The control section controls supply of the driving voltage to the first and second drivers and a stop of the supply. | 04-02-2015 |
20150102742 | DIMMING METHOD AND CIRCUIT AND CONTROLLED-SILICON DIMMING CIRCUIT WITH THE SAME - In one embodiment, a method of controlling dimming can include: (i) generating a dimming signal according to a DC input voltage signal; (ii) generating a voltage average value signal from the dimming signal; (iii) determining whether the dimming signal is in a positive half cycle or a negative half cycle; (iv) comparing the voltage average value signal against an output current feedback signal to generate a first comparison signal, and output a driving signal according to the first comparison signal when the dimming signal is in the positive half cycle; and (v) comparing the voltage average value signal against the output current feedback signal to generate a second comparison signal, and output the driving signal according to the second comparison signal when the dimming signal is in the negative half cycle. | 04-16-2015 |
20150123554 | MODULAR CONSTANT CURRENT REGULATOR - Constant current regulator ( | 05-07-2015 |
20150137694 | POWER SUPPLY CIRCUIT FOR DRIVING LED LAMP AND POWER SUPPLY METHOD, AND PRIMARY-SIDE CONTROL CIRCUIT OF FLYBACK TRANSFORMER - The present invention discloses a power supply circuit for driving an LED lamp and a power supply method. The power supply circuit is constituted by an AC-DC converter by adopting DCM-DCM. Also, the power supply circuit adopts a valley fill circuit to reduce rippling of output current and adopts the DCM-DCM to stabilize a link voltage, thereby realizing a power factor correction circuit having two-stage structures. Thus, an input voltage of the flyback converter may be improved, and a high reverse voltage may be applied. | 05-21-2015 |
20150145428 | COMPACT FLUORESCENT LAMP THREE-WAY BALLAST DRIVER - A compact fluorescent lamp (CFL) ballast driver includes first, second and neutral AC voltage terminals, a full wave rectifier between the first AC voltage terminal and the neutral AC input terminal, and a separate branch between the second AC voltage terminal and the neutral AC input terminal. A resonator circuit includes at least two inductors and provides its output voltage to a CFL lamp. The driver includes a first state detector circuit to monitor the first AC voltage terminal, and a second state detector circuit to monitor the second AC voltage terminal. The first and second state detector circuits activate respective first and second switches. The first switch shunts one inductor of the resonator circuit, and the second switch shunts another inductor of the resonator circuit. The driver can be housed in a CFL having a capper, a three-way lamp base adjacent to the capper and an arc tube. | 05-28-2015 |
20150382423 | DIMMABLE LED DRIVER AND DRIVING METHOD - Disclosed are dimmable LED driver circuits and methods. A dimmable LED driver can include: an SCR, an electronic transformer, and a rectifier bridge to convert an AC voltage to a DC voltage signal; a power stage circuit that receives the DC voltage signal, and outputs a constant current to drive an LED load, where the power stage circuit includes first and second power stage circuits, the first power stage circuit receiving the DC voltage signal, and generating a first output voltage to the second power stage; and an input current control circuit that receives an input current of the first power stage circuit and the first output voltage, and generates a first control signal to control the input current as a square wave signal during an on time of the SCR, and the input current is substantially zero during an off time of the SCR. | 12-31-2015 |
20160088697 | CONTROLLING BRIGHTNESS AND COLOR TEMPERATURE OF LIGHT SOURCES - A circuit for driving a light source includes a power converter coupled between a power source and the light source, and a controller coupled to the power converter. The power converter receives power from the power source and provides a regulated power to the light source. The controller receives a conduction status signal indicating a conduction state of a dimmer coupled between the power source and the power converter, and adjusts the brightness of the light source based on the conduction status signal. The controller also receives an operation indicating signal indicative of operation of an ON/OFF switch coupled to the dimmer, and adjusts color temperature of the light source based on the operation indicating signal. | 03-24-2016 |
20160091147 | LED TUBE LAMP - A light-emitting diode (LED) tube lamp comprises a lamp tube, a first rectifying circuit, a filtering circuit and an LED driving module. The lamp tube has a first pin and a second pin for receiving an external driving signal. The first rectifying circuit is coupled to the first and second pins, for rectifying the external driving signal to produce a rectified signal. The filtering circuit is coupled to the first rectifying circuit, for filtering the rectified signal to produce a filtered signal. The LED driving module is coupled to the filtering circuit to receive the filtered signal for emitting light. Wherein, the filtering circuit includes a capacitor and an inductor connected in parallel and between one of the first and second pins and the first rectifying circuit, and the parallel-connected capacitor and inductor are configured for presenting a peak equivalent impedance to the external driving signal at a specific frequency. | 03-31-2016 |
20160095176 | CONTROL METHOD FOR LIGHT COLOR OF LIGHTING DEVICE - A control method for light color includes: turning on an external switch of a lighting device to send a color control signal to a light emitting unit that further emits a white light; turning off the external switch for a first interval and again turning it on; determining the first interval is shorter than a first predetermined period and sending multiple first color control signals to the light emitting unit to cause the light emitting unit to emit multiple different light colors C | 03-31-2016 |
20160102813 | POWER SOURCE MODULE FOR LED LAMP - A power source module for a LED lamp includes a filament-simulating circuit, a current limiting circuit, a rectifier, a filter, and a discharging circuit electrically connected to each other and a LED in the LED lamp. The filament-simulating circuit simulates a filament before the LED to pass through the pre-heating process of the electrical ballast in a fluorescent lamp base. The current limiting circuit, the rectifier, and the filter limit, rectify and filter the current from an external power source in the fluorescent lamp base to output a high frequency, direct current to drive the LED. The discharging circuit discharges the energy after turning the power switch off to prevent the LED lamp from flicker. Therefore, the power source module enables the LED lamp to be installed on the traditional fluorescent lamp base without modifying the circuit in the base. | 04-14-2016 |
20160192462 | DISCHARGE LAMP LIGHTING DEVICE - Disclosed herein a discharge lamp lighting device capable of suppressing an occurrence of a flicker and obtaining a longer life till flicker even when the discharge lamp lights up for a long time. The device comprises a short arc type discharge lamp; a lighting circuit for supplying power to the discharge lamp; and a controller for controlling the lighting circuit. The discharge lamp has: an arc tube; an anode and a cathode disposed in the arc tube with the anode and the cathode facing each other; and a xenon gas enclosed in the arc tube, and the cathode includes an electron emissive material and a carbon component. The controller includes a short time lighting circuit for carrying out a short time lighting operation that lights up the discharge lamp at least once in a short time during an idle period in which the discharge lamp does not constantly light up. | 06-30-2016 |
20160205738 | LED TUBE ADAPTED FOR USE WITH ELECTRONIC BALLAST OR AC MAINS AND CONTROLLING METHOD THEREOF | 07-14-2016 |
20160381746 | POWER SOURCE MODULE FOR LED LAMP - A power source module for an LED lamp includes a filament-simulating circuit electrically connected to a first bi-pin terminal and a second bi-pin terminal of the LED lamp, each of the first bi-pin terminal and the second bi-pin terminal configured to allow a current to flow from one pin to the other pin via the filament-simulating circuit during a pre-heat process executed by a ballast; a current limiting circuit electrically connected to the filament-simulating circuit configured to limit a current from the filament-simulating circuit; a first rectifier electrically connected to the current limiting circuit configured to rectify the current from the current limiting circuit; and a filter electrically connected between the first rectifier and at least one LED of the LED lamp configured to smooth the current from the first rectifier. | 12-29-2016 |