I recently purchased a decorative light with two different bicolor LEDs connected in alternating series fashion.
It has red/green and red/blue LEDs connected in alternating series
On the driver side we have AC 240V rectified using an MB10S, with a SMD component (most likely a capacitor) connected in parallel at the DC output. This DC voltage is then supplied to the LEDs.
I also see a pair of wires taken from the positive DC terminal which are eventually shorted at the terminal LED. I suppose this was done for redundancy purpose considering how fragile these connections are.
What makes the LEDs switch color?
I suppose that two pin bicolor LED need switching polarity to blink different colors. If so, then which element in the circuit is performing the polarity switch?