Since 2010, I have built several Mood lights using up to 32 Piranha RGB leds. Intensity of R, G and B is regulated using PWM at 250Hz or 1kHz using either 3 08Ms or in later versions a 14M2. A power MOSFET drives each colour. Recently, two of these lights have developed an intermittent flicker (a few Hz) in one or two of the LEDs.
Confession time - I paralleled all the LEDs of the same colour and used 1 resistor in series for each colour. Is it likely that this short cut has caused some LEDs to fail intermittently?
Derek
Confession time - I paralleled all the LEDs of the same colour and used 1 resistor in series for each colour. Is it likely that this short cut has caused some LEDs to fail intermittently?
Derek