Abstract: A lighting device which is controllable in respect of color temperature as well as brightness has a control circuit electrically coupled to AC voltage source. The control circuit includes first and second control circuits, the first control circuit turns the light emitting device on and off and adjusts brightness of the light emitting device. The second control circuit determines whether the AC voltage source is on during a predetermined period, and if determined to be on, adjusts color temperature of the light emitting device.

Abstract: A lighting device which is controllable in respect of color temperature as well as brightness has a control circuit electrically coupled to AC voltage source. The control circuit includes first and second control circuits, the first control circuit turns the light emitting device on and off and adjusts brightness of the light emitting device. The second control circuit determines whether the AC voltage source is on during a predetermined period, and if determined to be on, adjusts color temperature of the light emitting device.

Abstract: A controllable silicon light regulation apparatus without a driving power element receives an alternating current (AC) from an AC source comprising a first light emitting diode (LED) source module and a second LED source module. The controllable silicon light regulation apparatus stores specified color temperatures. A difference between adjacent specified color temperatures is 100K. Under a segment dimming mode, the controllable silicon light regulation apparatus sets a segment value and selects a number of the specified color temperatures based on the segment value. A color temperature of the controllable silicon light regulation apparatus is gradually regulated in a loop of target color temperatures based on a counted number of turn-on times in a specified time duration of the AC source.

Abstract: A control circuit of the present disclosure can directly coupled with AC power grid to control and adjust an LED lamp. The control circuit includes a protection unit, an anti-interference unit, an adjusting unit, an auxiliary control unit, a light emitting module, a low-flicker control unit, an ESD protection unit, an output unit and a plurality of IC unit. the adjusting unit adjusts and control a luminance of the light emitting module, the auxiliary control unit assistants to adjust the luminance of the light emitting module and increase a compatibility between the adjusting unit and the IC unit.

Abstract: A light emitting diode (LED) street lamp control system includes a control module and an LED street lamp unit coupled with the control module. The control module includes a dimmer module, a driving module, and a light source module coupled with the driving module. The dimmer module is coupled with the control module and receives a signal from the control module. The dimmer module also can transmit a signal to the control module. The dimmer module is coupled to the driving module by an access module to control the driving module to control the light source module.

Abstract: A light emitting diode (LED) street lamp control system includes a control module and an LED street lamp unit coupled with the control module. The control module includes a dimmer module, a driving module, and a light source module coupled with the driving module. The dimmer module is coupled with the control module and receives signal from the control module. The dimmer module also can transmit signal to the control module. The dimmer module is coupled to the driving module by an access module to control the driving module to control the light source module.