Abrégé

A multi-channel light-emitting diode (LED) linear driver circuit, including a switch-triggering loop, a dimming drive loop and an output loop. The switch-triggering loop is configured to detect a triggering situation of an external switch and send a switching control signal according to the triggering situation of the external switch. The dimming drive loop is configured to generate at least two drive signals. The output loop includes at least two output ports respectively connected to the least two drive signals. The switch-triggering loop is connected to the output loop. The switching control signal is configured to control connection or disconnection of each of the at least two output ports.

Classes IPC  ?

• H05B 45/395 - Régulateurs linéaires
• H05B 45/10 - Commande de l'intensité de la lumière
• H05B 45/305 - Circuits de commande de fréquence
• H05B 45/37 - Circuits de conversion
• H05B 47/165 - Commande de la source lumineuse en suivant une séquence programmée pré-assignéeCommande logique [LC]

Abrégé

A linear drive circuit and an LED light including the same. The linear drive circuit includes an AC-DC module, an LED module, a CCT and brightness control module, and a drive control module. The AC-DC module is connected to the LED module through a first unidirectional conductive element, and is configured to obtain an AC input voltage control signal, and convert the AC input voltage control signal into a corresponding DC voltage control signal. The CCT and brightness control module is connected to the LED module, and is configured to obtain a corresponding CCT control signal or a brightness control signal according to the DC voltage control signal, so as to adjust the CCT of each LED string in the LED module. The drive control module is configured to receive the brightness control signal, thereby adjusting the brightness of the LED module.

Classes IPC  ?

• H05B 45/10 - Commande de l'intensité de la lumière
• H05B 45/20 - Commande de la couleur de la lumière
• H05B 45/46 - Détails des circuits de charge à LED avec un contrôle actif à l'intérieur d'une matrice de LED les diodes étant disposées parallèlement
• H05B 45/325 - Modulation de la largeur des impulsions [PWM]

Abrégé

A grounded voltage protection circuit for a linear drive circuit includes an AC-DC power supply module, a first voltage protection module, an LED module, a drive IC and a linear current adjustment module. Through the cooperation of the first voltage protection module, the drive IC and the linear current adjustment module, when a DC voltage signal output by the AC-DC power supply module exceeds a first preset voltage value, the first voltage protection module outputs the first preset voltage signal to prevent the drive IC and the LED module from being damaged due to the overvoltage output by the AC-DC module, and avoid the transient impulse voltage in the entire voltage protection circuit, thereby enabling the voltage protection circuit to pass the CEC certification.

Classes IPC  ?

• H05B 45/50 - Circuits pour faire fonctionner des diodes électroluminescentes [LED] réagissant aux dysfonctionnements des LED ou à un comportement indésirable des LEDCircuits pour faire fonctionner des diodes électroluminescentes [LED] sensibles à la vie des LEDCircuits de protection
• H05B 45/395 - Régulateurs linéaires
• H05B 45/54 - Circuits pour faire fonctionner des diodes électroluminescentes [LED] réagissant aux dysfonctionnements des LED ou à un comportement indésirable des LEDCircuits pour faire fonctionner des diodes électroluminescentes [LED] sensibles à la vie des LEDCircuits de protection dans un ensemble sériel de LED

Abrégé

The present invention provides a circuit for linearly driving LED illumination based on MCU-controlled color temperature switching, comprising an SCM color temperature control module, an LED linear dimming driving and control module and an LED illumination module. The SCM color temperature control module may output two PWM signals, to adjust the ratio of current at the LED bead strings, thus to synthesize two or more different color temperatures. Or, the SCM color temperature control module outputs multi-channel control signals and then controls a color temperature output module to control the ratio of current at the LED bead strings at high and low color temperatures, thus to realize two or more color temperatures. Furthermore, a memory function or a non-memory function can be realized, if desired. The LED linear dimming driving and control module can control and adjust the illuminance of the LED illumination module, and can realize a dimming function.

Classes IPC  ?

• H05B 33/08 - Circuits pour faire fonctionner des sources lumineuses électroluminescentes
• H05B 45/20 - Commande de la couleur de la lumière
• H05B 45/395 - Régulateurs linéaires
• H05B 45/37 - Circuits de conversion
• H05B 45/10 - Commande de l'intensité de la lumière

Abrégé

A switched-mode control circuit for correlated color temperature (CCT) based on linear drive LED lighting, including a switched-mode CCT control module, a linear drive control module, and an LED lighting module which is connected with the switched-mode CCT control module and the linear drive module. The switched- mode CCT control module is used to control and adjust the CCT of the LED lighting module, so that the LED lighting module emits light with different CCTs, and it may or may not have a memory function. The linear drive control module is capable of controlling and adjusting illuminance of the LED lighting module. The control circuit has a simple design and enables the adjustment of both the CCT and the illuminance, promoting the user experience.

Classes IPC  ?

• H05B 45/20 - Commande de la couleur de la lumière
• H05B 45/395 - Régulateurs linéaires
• H05B 45/46 - Détails des circuits de charge à LED avec un contrôle actif à l'intérieur d'une matrice de LED les diodes étant disposées parallèlement

Abrégé

The invention provides a circuit for LED illumination driving current linear adjustment and dimming control. The circuit for LED illumination driving current linear adjustment and dimming control includes AC power supply module, LED module, drive IC, dimming control module and linear current adjustment Module. The linear current adjustment module may control to reduce current flowing through LED module when input voltage is increased, to achieve balance of input power and improve linear adjustment rate thereof; and the dimming control module may alter the change of an internal reference voltage of the drive IC by external input voltage change, thereby realizing the change of the LED module current, cooperating with a holding current driving part, opening and closing a path for the holding current; therefore, the circuit can be applied to triac dimming applications, and the structure is compatible with 0-10V and PWM driving, thereby improving applicability.

Classes IPC  ?

• H05B 33/00 - Sources lumineuses électroluminescentes
• H05B 33/08 - Circuits pour faire fonctionner des sources lumineuses électroluminescentes

Abrégé

A switched-mode control circuit for correlated color temperature (CCT) based on linear drive LED lighting, including a switched-mode CCT control module, a linear drive control module, and an LED lighting module which is connected with the switched-mode CCT control module and the linear drive module. The switched-mode CCT control module is used to control and adjust the CCT of the LED lighting module, so that the LED lighting module emits light with different CCTs, and it may or may not have a memory function. The linear drive control module is capable of controlling and adjusting illuminance of the LED lighting module. The control circuit has a simple design and enables the adjustment of both the CCT and the illuminance, promoting the user experience.

Classes IPC  ?

• H05B 37/02 - Commande
• H05B 33/08 - Circuits pour faire fonctionner des sources lumineuses électroluminescentes