I am using a Meanwell Led Driver LDD-1000H. It has a single pin for PWM input for dimming.
I have seen many sketches using the 555 to dim a LED but in these cases the LED was part of the circuit. How can I design a circuit based on the 555 to generate a PWM output on a single pin? (Additional question, I don't get how a signal is passed on with a single pin..).
If I want to vary the frequency of the PWMoutput, can I just replace R2 with am adjustable resistor or do I need the two diods as drawn below?
Thanks in advance for your reply..
Thanks very much for your answer. That would be essentially the following circuit:
Is there a way to get cheaper component as the current and voltage are much lower than those used when the motor is driven like here: