Color correcting device driver

A method performed by a driver circuit, the method comprising:

• turning on loads coupled to the driver circuit using the driver circuit;
• determining that a voltage supplied to the strings has dropped by a first threshold amount;
• turning off the loads using the driver circuit;
• and
• determining that the voltage supplied to the strings has recovered by a second threshold amount;
• and
• responsive to the voltage recovering, repeating the method.

A system for driving illuminating elements, the system comprising:

• one or more strings of white light emitting elements;
• one or more strings of color-adjusting (CA) light emitting elements coupled in parallel with the strings of white light emitting elements;
• one or more driver circuits coupled to the one or more white and CA strings, at least one of the driver circuits further comprising:
• a rectifier configured for rectifying an alternating input voltage and providing an incoming current;
• a transformer coupled to the rectifier and having a primary coil and a secondary coil;
• a capacitor coupled to the secondary coil and configured for coupling to the white string of light emitting elements and the color-adjusted (CA) string of light emitting elements;
• a power factor correction (PFC) controller coupled to the primary coil and configured for providing PFC;
• and
• a device controller coupled to the secondary coil and configured for coupling to the white string of light emitting elements and the CA string of light emitting elements, the device controller configured to generate pulse width modulated (PWM) commands to transistors coupled in series with the white and CA strings to vary current into the white and CA strings with a frequency of the incoming current.

A system for driving light emitting elements, the system comprising:

• means for turning on loads coupled to the driver circuit using the driver circuit;
• means for determining that a voltage supplied to the elements has dropped by a first threshold amount;
• means for turning off the loads using the driver circuit;
• and
• means for determining that the voltage supplied to the elements has recovered by a second threshold amount and responsive to the voltage recovering repeating the method.